CN103372505B

CN103372505B - A kind of infiltration micro irrigation pipe and preparation method thereof

Info

Publication number: CN103372505B
Application number: CN201210118522.2A
Authority: CN
Inventors: ***; 史贞
Original assignee: SHENZHEN XINKANGWO SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Shenzhen easy driving technology Co.,Ltd.; Shenzhen Jin Ma Tian Network Technology Co.,Ltd.; Shi Zhen; Wang Jianmin
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2016-04-27
Anticipated expiration: 2032-04-23
Also published as: CN103372505A

Abstract

The present invention relates to a kind of infiltration micro irrigation pipe and preparation method thereof, this pipe comprises capillary percolation pipe (1), the material with capillary percolation function is adopted to make, the three-dimensional network capillary with hydrophilic inorganic filler and thermoplastic seeps water structure, and unpowered, self adaptation, lasting, balanced infiltration function, according to the soil water potential height contacted with it, water can by tubing outwards infiltration or stopping outwards infiltration automatically.This pipe also can comprise gel protective layers (4), is render in the space of non-woven fabrics by high-moisture-retention resin-oatmeal, and the imbibition of high-moisture-retention resin-oatmeal forms gel protective layers.Tubing has good infiltration ability, energy antiblocking, antibacterial, protection against rodents, uses this micro irrigation pipe also auxiliary with other irrigation component, forms a kind of unpowered, self adaptation, lasting, equilibrium infiltration slight irrigation system, can be applicable to water saving micro irrigation field.

Description

A kind of infiltration micro irrigation pipe and preparation method thereof

Technical field

The present invention relates to a kind of water saving micro irrigation tubing, particularly relate to a kind of buried micro irrigation pipe with infiltration function.

Background technology

6% of China's water resource Jin Zhan world total amount is the resource more in short supply than cultivated land resource (accounting for 9% of world's total amount), and water resource deficiency has become the bottleneck of serious restriction Chinese national economy sustainable development.Agricultural is the industry that China's use water is maximum, accounts for more than 70% of total water consumption, and wherein water quantity for irrigating agricultural field accounts for 90% ~ 95% of Water Consumption in Agriculture.But, China's shortage of water resources and water resource waste the phenomenon of depositing is very serious.Because irrigation technique falls behind, cause that water resource waste is serious, utilization ratio is low, exacerbate the present situation of shortage of water resources.Alleviating one of important channel of the contradiction of supply and demand for the water resource is Development of Water-Saving Irrigation.Water-saving irrigation is the general name of the irrigation technique than the obvious using water wisely of traditional irrigation and high-efficient water use.At present, in water-saving irrigation area, adopt the very little of modern advanced water-saving irrigation technique, the overwhelming majority has just tentatively carried out transformation on economy of water cousumption by substandard.Therefore, the water-saving irrigation area of China especially efficient water-saving irrigation area all there are huge development space and potentiality.Current water-saving irrigation technique mainly contains following several: (1) sprinkler irrigation technique, (2) drip irrigation technique, (3) infiltration irrigation technology.Infiltrating irrigation is continue sprinkling irrigation, after drip irrigation, a kind ofly novel effectively descend micro irrigation technology, and be the irrigation method of economizing on water most generally acknowledged at present, being the technical revolution of agricultural irrigation, is make agricultural irrigation by the extensive another approach moving towards Scientific Water Conservation.

Infiltrating irrigation, as the term suggests namely irrigation water passes wall is outwards slowly that sweating shape oozes out, and immediately by the capillary action of the outside soil of wall, to soil body diffusion, supplies the mode of a kind of continuous irrigation of moisture or liquid fertilizer to crop.But the domestic irrigation method all irrigation components being embedded in underground at present, comprises " underground drip irrigation " etc. and is all considered as " infiltrating irrigation " [" infiltration irrigation technology existing problems and suggestion "-" irrigation and drainage " 97.16 (2) 4].According to this division, mainly contain following several types: 1. buried drip irrigation system, 2. foaming system, 3. rubber powder infill system, 4. string infill system.All there is blocking-proof result difference in above-mentioned technology, processing and forming technology is complicated, pore-forming efficiency is low, do not belong to the shortcoming of infiltration irrigation in essence.

Agricultural high-moisture-retention resin-oatmeal (WaterRetainingPolymersagent) or claim water-loss reducer (WaterRetainingAgent) it be the general designation that a class has the functional high molecule material of high water absorption character.Super absorbent resin first by U.S.'s agriculture grind develop successfully, also start to develop research in Japan, France, Britain and Germany etc. afterwards.The application study of its agriculture aspect, starts from 20 century 70s, obtains surprising effect after nineteen ninety.Wherein Japan sprinkles the super absorbent resin of one deck containing fertilizer in the 20cm depths at sandy beach, and its consumption is 2: 100 with husky weight ratio, sowing spinach, and its yield per unit area is more than 2 times of the earth spinach.Russia uses polyacrylamide super absorbent resin, strangle at volga lattice and carried out large area test, per hectare ground uses 100kg, 50% and make increasing crop yield 20% 1 70%[Zhang Ke etc. can be economized on water: the research of super absorbent resin in agricultural application, Liaoning chemical industry, 36th volume 1 the 12nd phase, in December, 2007].Domesticly also extensively expand application study.Through putting into practice for many years, also form some effective usings method, mainly containing: 1. seed pelleting (film, coating) technology, 2. dip in root technology, 3. mix native technology etc.Tang Guang etc. find after have studied the soil moisture distribution using Super Absorbent Resin, and Super Absorbent Resin forms water suction network together with the soil mixed mutually with it, absorbs and keep moisture.[Tang Guang, Li Hui, " crops saving water, resisting drought comparative experimental research " [J]. Beijing Agriculture science, 2000,18 (4): 25-29].Above-mentioned data shows, high water-retaining resin is formed at rhizosphere place one " miniature reservoir ", serves obvious effect to keeping the moisture of soil.

Prior art 1

Ground drip irrigation is a kind of water-saving irrigation technique of Israel's exploitation.Evaporating for avoiding the surface water causes irrigation water to waste, as the mutation of ground irrigation system, in practical operation, whole irrigation system is kept to construct constant, by whole hollow billet or the degree of depth suitable during hollow billet hollow billet being installed drip head is placed into the soil, stop with the soil covering drip irrigation pipe upper strata and irrigate evaporation of water, form underground drip irrigation system, this is infiltrating irrigation system also person.The shortcoming of prior art 1: because drip irrigation designs for surface irrigation, do not need too much to consider blockage problem.But be embedded in soil, blocking just becomes the principal element of restriction underground drip irrigation.The reason producing blocking mainly can be divided into four large classes: 1. physical clogging; 2. electroless Ni-P-C-O plating; 3. microorganism clogging; 4. root system of plant blocking.For solving blockage problem, the method for patent ZL200820077586.1, patent ZL98233435.4 design attempts to carry out anti-clogging with pore, though there is certain effect, but still belong to limited pore, its blocking-proof result is poor, and service life is shorter.

Prior art 2

Patent application 200810010002.3, patent application 200710012873.4 propose to make a kind of infiltrating irrigation pipe with " plastic microporous foaming hole creating technology "; Patent ZL98125656.2, ZL200610152776.0 adopt and reclaim rubber powder filling hole creating technology; Patent application 99111277.6 adopts plastics and plant fibre blending to prepare infiltrating irrigation pipe.The shortcoming of prior art 2: above-mentioned technology is all a technical barrier how being controlled to porosity, pore size, uniform pore diameter etc.Foaming tube " tube wall contains a large amount of micropore, and have be permeable hole on a small quantity " is admitted in patent application 200710012873.4.Obviously this technology is extremely low by the efficiency (percent opening) of foaming generation permeable hole.Permeable hole very little, concerning irrigation not favourable.Pulverize recovery rubber fine powder power consumption huge the bring cost of production particle diameter below 10 microns to increase.Patent ZL99111277.6 processing step is many, more complicated.Particularly attempt to use high voltage direct current electrolytic sodium chloride, the chlorine discharged is toxic and harmful, the NaOH of generation is a kind of highly basic, complex process is dangerous, and environmental protection treatment causes expense to increase severely.

Prior art 3

Its internal layer of multiple tube described in patent ZL201020555061.1 is that tube wall establishes foraminate plastic conduit, and skin is a kind of class cotton matter with alveolate texture.Braided wires fabric is wrapped in outside microporous pipe by patent ZL201020572907.2.What patent ZL200610048383.5 conceived is overlap an infiltrating irrigation pipe be made up of non-woven fabrics in the drip irrigation pipe that aperture opening ratio is 50 ~ 70%, for reducing the water flow mode of piping continuously in inner tube, centre constructs again one " nexine carrying capacity is large, the unordered netted outer frame that outer carrying capacity is little ".Patent ZL01139268.1 chemical-fibres filaments or yarn become knitting pipe by knitting machine weaving, then coating material is become to be coated in pipe surfaces externally and internally with plastics hybrid process in water-soluble inorganic powder, this multiple tube being immersed in the water traction extruding repeatedly 20 times, water soluble salt stripping being formed permeable hole and forms Clogproof filtration irrigation composite tube buried ground.The shortcoming of above-mentioned prior art: the internal layer of prior art design is microporous pipe, outer or have " alveolate texture " class cotton matter tubulose plastic layer or braided wires fabric or construct intermediate layer for " unordered netted outer frame " and adopt braiding, coating, dipping to prepare osmos tube and be complicated process program, production efficiency is low, cost is high.

Patent application 200910071473.X and 200910072606.5, patent ZL200920100470.X contemplate double-deck " water cable ", its internal layer for " one group of pellicle tube wall, both carried moisture; again by tube wall infiltration to soil release moisture core pipe ", outer wall be then adopt " the back-up coat sheath that chemical fibre, glass fibre, rock wool fibers or stainless steel wire, non-woven fabrics, chemical fiber cloth, burlap adopt ripe conjunction or method of sewing to make ".The pellicle of this technology directly must contact with soil and just may form pellicle effect.Its " back-up coat sheath " may weaken the contact of pellicle and soil, destroys " water cable-soil-plant defines the dynamical system of a water translocation " described in this patent, its permeability performance is deteriorated.

Prior art 4

Patent ZL200710071720.7 is with inert filler, plastics and " interleaving agent " that be made up of " atoleine, silicone oil or lubricating oil ".This composition being processed into the method for irrigating device is first inert filler and interleaving agent are added stirrer for mixing evenly in required ratio, and then plastics are dropped into mixer stir and use comminutor extruding pelletization.Again this particle is dropped into process equipment and be prepared into tubing, film or container.In detail in the claims " interleaving agent " is explained as follows: " described interleaving agent refers to have certain compatibility and the material that can form one deck liquid film on above-mentioned inert material surface with matrix; this interleaving agent is present in the centre of inert material phase and this two-phase of plastics in process thereafter; to isolate two-phase; prevent inert material particles from directly contacting with plastic material ", say when explaining the beneficial effect using interleaving agent to obtain: " matrix phase and filler mutually between have one deck release agent layer; after goods process, interleaving agent migrate to gradually matrix such as plastics mutually in.Thus leave tiny space plastics phase is alternate with filler " define penetrating passage." water can penetrate into opposite side from the side of wall lentamente by these passages, thus makes the plastic products made be provided with the function of percolating water ".But according to the description of this patent, the interleaving agent of the one side of filler aggregate contact matrix can produce migration, forms gap.But its problem is still not to be enclosed with interleaving agent with the surface of base contact between filler and filler, even if ideally, define one and can run through infiltrating irrigation container wall both sides, constituting a centre is the filler piled up, pile up the ideal model defining passage that can be permeable between filler and matrix, this passage that can only be formed between filler and matrix is quite limited, between filler, a large amount of gap is isolated agent isolation blocking-up, the penetrating passage run through can not be formed, even if gap is not isolated agent and blocks, also water permeation difficulty can be caused because of the lipophilic-hydrophobic property of interleaving agent.As seen from the above analysis, this process of this patent can not improve the voidage of penetration material, and can not improve the permeability of water under same interstitial vacancy state, its water seepage function is poor.

Patent application 200910071769.1 uses nano particle, plastics and one " surfactant " to prepare a kind of " pellicle ".Think, after this modified materials blown film, part surface activating agent extracts by available water, " space that this part surface activating agent originally occupied in film body becomes the pore-forming of through channel, and pore size is in nanoscale scope ".But the surfactant water that above-mentioned patent application is attempted being combined with filler extracts, this is difficult to realize.Scientific common sense is known, the material of the typical structure model of surfactant is a kind of one end to be the lipophilic group other end be hydrophilic radical composition.When processing hydrophilic inorganic filler with it, hydrophilic one end is inwardly combined with filler, the other end of oleophylic is outside, the original water-wetted surface of filler is made to change oil-wetted surface into, the compatibility of filler and macromolecule matrix is caused greatly to improve, the combination of the two-phase interface of filler and macromolecule matrix is more firm, becomes one and has good mechanical property organic whole.Extensively adopt this processing method in plastic processing modification field, to realize the strong bonded between filler and macromolecule matrix, improve the bulk strength of material.But the field of micropore permeation is there is in hope, this firmly combination is not hoped, it is very poor that the filler particles desirably disperseed is dispersed in two-phase interface compatibility in macromolecule matrix, without any combination, there is a large amount of gap in two-phase interface, the use of surfactant is disadvantageous to generation micropore.So use surfactant to make pore-forming efficiency reduce, the infiltration effect of material is poor.

The ratio that above-mentioned two patented technology fillers are filled is lower, the ratio of patent ZL200710071720.7 filler and plastic substrate is 5 ~ 30: 100, the ratio of patent application 200910071769.1 filler and plastic substrate is 5 ~ 60: 100, owing to employing interleaving agent and surfactant, change the water-wet behavior of filling surface, so the infiltration effect of material is poor, and because needs interleaving agent or surfactant carry out premixed process to filler, also longer technological process is brought thus, investment is large, the cost of raw material is high, production efficiency is low, overall manufacturing cost is higher, and production environment dust is larger, pollute higher.Above-mentioned two technology are all without mentioning antibacterial and mouldproof and anti-rat.Therefore the ability of antibiont blocking is poor, also without keeping away mouse effect.

In sum, without the technology adopting the slight irrigation material with capillary percolation function to prepare micro irrigation pipe in prior art, also the hydrogel permeation layer not adopting high-moisture-retention resin-oatmeal to obtain is as the technology of outside permeable layer, the control of gained slight irrigation tubing carrying capacity and water transmission way is by exterior mechanical or artificial, it not the demand automatically adapting to plant, can not continue, balancedly seep water, without antibacterial, protection against rodents ability, resistance to blocking is poor, also exist not environmentally, complex process, production efficiency are low, high in cost of production shortcoming.

Before introducing content of the present invention, first define keyword used herein.

The flow of water of soil: soil water potential (soilwaterpotential) is under isothermal reversal condition, certain point in mobile unlimited a small amount of pure water to soil, pure water institute of unit work.Soil water potential is generally expressed as negative pressure.In soil during water saturation, the absolute value of soil water potential is little, and when soil moisture content is low, the absolute value of soil water potential is large.Therefore the size of soil water potential absolute value reflects the difficulty or ease of soil water movement and plant water suction.Under any circumstance, the movement tendency of water is all shift to flow of water lower from the flow of water is high.[" Chinese agriculture encyclopedia "]

Moisture in soil can describe in two ways: water content and the flow of water.Water content refers to the volume of unit volume soil moisture or the weight of Unit Weight soil moisture, and water content can not obtain validity to plant by reflect soil moisture.The for example water content of 15%, quite moistening in sandy soil, nearly all plant can grow.If clay moisture 15%, nearly all plant all cannot survive.On the contrary, if by the flow of water as measurement unit, measurement result then has nothing to do with soil property, and regardless of soil property, regardless of geographical position, the soil of-10 bar are all very arid, and the soil of-0.5 bar is all very moistening.Can find out, only according to water content, you cannot judge the degree of drought of soil for plant growth.The optimum moisture content that certain plant grows in soil A is 20%, changes a kind of soil B, and situation just may not be certain like this.Therefore, when needing to study the relation of plant and environment, all soil water potential is used.

Summary of the invention

(1): a kind of slight irrigation material with capillary percolation function and preparation method thereof

A kind of slight irrigation material with capillary percolation function and preparation method thereof, not containing interleaving agent and surfactant in this material, the inorganic filler ratio of filling is higher, the infiltration effect overcoming material in prior art is poor, investment is large, the cost of raw material is high, technological process is long, production efficiency is low, the shortcoming that overall manufacturing cost is high, this material has in not hydrophilic thermoplastic matrix simultaneously, be uniform-distribution with the structure of being piled up the capillary infiltration network formed by hydrophilic inorganic filler particle, this structure both ensure that processing and the serviceability of material, again can according to the flow of water height of the soil contacted with it, water can by outwards infiltration or the stopping outwards infiltration automatically of the capillary network of material internal.This material also can have function that is antibacterial, that keep away mouse, can be widely used in the infiltrating irrigation elements such as the various infiltrating irrigation tubing of buried slight irrigation domain requirement, filtration irrigation membrane pipe, filtration irrigation membrane pipe (band), hollow container, film.

The invention provides a kind of Capillary penetration micro irrigation material, comprise following component:

Component A: thermoplastic, this thermoplastic comprise polyethylene, polypropylene, polybutene, polystyrene, polyester, nylon, Merlon or based on above-mentioned thermoplastic blended/modification by copolymerization thing,

Wherein: described thermoplastic melt mass flow rate≤4g/10min;

B component: hydrophilic inorganic filler, the flyash that red mud, titanium dioxide, industrial power plant flue gas desulfating gypsum or boiler that the salt slurry that described hydrophilic inorganic filler comprises metal oxide, hydroxide, carbonate, sulfate, the oxide of silicon, the condensation polymer of silicate, the condensation polymer of aluminosilicate, lightweight or powdered whiting, silica gel, zeolite, talcum, hydration talcum, chlorine industry produce, Aluminum produce produce, or two or more mixture of above-mentioned inorganic filler, the particle diameter of described hydrophilic inorganic filler is: 10 μm-1.6 μm;

Auxiliary agent component C: composite antioxidant, described composite antioxidant is composited with parts by weight 1: 1 by Hinered phenols antioxidant and phosphorous acid esters thermal oxidation stabilizer;

Auxiliary agent component D: Tissuemat E or atactic copolymerized polypropene that the high fluidity polyethylene of melt mass flow rate >=30g/10min or polypropylene or mean molecule quantity are greater than 3000;

The parts by weight of above-mentioned each component are:

A：100，B：45-300，C：0.2-1.0，D：1-5；

Each component above-mentioned is taken at mixing obtained Capillary penetration micro irrigation material in mixing roll according to weighing balance.This material has in not hydrophilic thermoplastic matrix, equally distributedly pile up by hydrophilic inorganic filler particle the capillary that forms and to seep water network structure, can according to the flow of water height of the soil contacted with it, water can outwards be seeped water by this capillary infiltration network or be stopped outside infiltration.

Its component A is the polyethylene of melt mass flow rate≤0.1g/10min.

Its component A is the polypropylene of melt mass flow rate≤0.4g/10min.

It is characterized in that the particle size range of its B component is 6.5 μm-1.6 μm.

It is characterized in that the particle size range of its B component is 2.6 μm-1.6 μm.

It is characterized in that the parts by weight of its B component are 65-200.

It is characterized in that the parts by weight of its B component are 85-150.

It is characterized in that, in its B component, also can adding nano-particle material, its grain size is 60nm ~ 150nm, and adding parts by weight is≤10.

It is characterized in that its nano-particle material is nano-calcium carbonate.

It is characterized in that the grain size of nano-particle material is 60nm ~ 100nm.

It is characterized in that the grain size of nano-particle material is 60nm ~ 80nm.

The parts by weight that add that it is characterized in that its nano-particle material are≤6.

It is characterized in that its auxiliary agent component C is that four [β-(3.5-di-t-butyl, 4-hydroxy phenyl) propionic acid] pentaerythritol esters and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester are composited.

It is characterized in that its auxiliary agent component D is high fluidity polyethylene or the polypropylene of melt mass flow rate >=70g/10min.

It is characterized in that this material also containing adjuvant component E: antiseptic, described antiseptic is the metal ions such as silver, copper, zinc and compound thereof or mixture and nanometer metallic silver, the compound that to be fixed on titanium dioxide, barium sulfate, zeolite, silicate, silica gel, phosphate, active carbon and nano zine oxide, nano-titanium oxide, nano silicon oxide be carrier, its parts by weight are: 0.5-5.

It is characterized in that this material also containing adjuvant component F: keep away mouse agent, describedly keep away that mouse agent is cycloheximide, the slaine of terpenoid compound monomer, borate compounds, aryl phosphate ester or capsicim or above-mentioned two or more the mixture keeping away mouse agent, its parts by weight are: 6-15.

This material is also containing adjuvant component G: carbon black or toner, its parts by weight are: 1-5.

A kind of preparation method of Capillary penetration micro irrigation material, adopt twin-screw mixer comminutor or reciprocating singe screw mixing granulator machine, the draw ratio of mixing granulator machine used is >=40: 1, the long helical pitch that charge door place uses lead angle to be greater than 25 degree, outer screw diameter is the screwing element of the dark screw channel of 1.6 ~ 1.9 with screw inner diameter ratio (Do/Di), exhaust outlet is provided with in charge door downstream, described hydrophilic inorganic filler adopts the multistage material feeding process of three grades or level Four, the amount of filler that the first order adds is the 40%-60% of hydrophilic inorganic filler amount, when containing nano-particle material, all nano-sized filler should first all add by the first order, then according to 40% ~ 20%, 30% ~ 0%, the ratio of 20% ~ 0% by remaining filler from the second level, the third level, the fourth stage adds step by step, mixing granulator obtains material.

A kind of preparation method of Capillary penetration micro irrigation material, adopt twin-screw mixer comminutor or reciprocating singe screw mixing granulator machine, the draw ratio of mixing granulator machine used is 48: 1, the long helical pitch that charge door place uses lead angle to be greater than 25 degree, outer screw diameter is the screwing element of the dark screw channel of 1.6 ~ 1.9 with screw inner diameter ratio (Do/Di), exhaust outlet is provided with in charge door downstream, described hydrophilic inorganic filler adopts level Four material feeding process, the amount of filler that the first order adds is the 40-60% of hydrophilic inorganic filler amount, when containing nano-particle material, all nano-sized filler should first all add by the first order, then according to 40% ~ 20%, 30% ~ 0%, the ratio of 20% ~ 0% by remaining filler from the second level, the third level, the fourth stage adds step by step, mixing granulator obtains material.

A kind of preparation method of Capillary penetration micro irrigation material, adopt master batch processing method, use twin-screw mixer comminutor, the draw ratio of mixing granulator machine used is 48: 1, the long helical pitch that charge door place uses lead angle to be greater than 25 degree, outer screw diameter is the screwing element of the dark screw channel of 1.6 ~ 1.9 with screw inner diameter ratio (Do/Di), exhaust outlet is provided with in charge door downstream, described hydrophilic inorganic filler adopts level Four material feeding process, the amount of the hydrophilic inorganic filler that the first order adds is the 40%-60% of hydrophilic inorganic filler amount, when containing nano-particle material, all nano-sized filler should first all add by the first order, the second level, the third level, the fourth stage feeds in raw material, according to 40% ~ 20%, 30% ~ 0%, remaining filler adds by the ratio of 20% ~ 0% step by step, mixing granulator obtains material masterbatch and joins in dual-screw pelletizer by masterbatch and remaining thermoplastic again, be processed into material.During the processing technology of masterbatch, first the resin and plastic of whole fillers and part is made masterbatch, then by masterbatch and remaining plastics again granulation obtain.

A preparation method for Capillary penetration micro irrigation material, adopts continuous mixing comminutor, adds disposable for all materials, obtained material requested.

Mother material is due to through twice mixing process, and for the filler systems that particle diameter is less, the system particularly containing nano particle, can obtain better dispersion effect.

The preparation method of material of the present invention also can adopt continuous mixing (FCM) comminutor process route.The mixing cavity volume of continuous mixer is large compared with twin-screw mixer comminutor, the infill system that the disposable accommodation particle of energy is comparatively thin, bulk density is less, volume is larger, so can all materials is disposable add, and obtained material requested.

Processing temperature is generally between 110-290 DEG C, and depend primarily on type and the ratio of selected plastics kind and filler, concrete temperature range will provide in an embodiment.

The hydrophilic inorganic filler surface of adding in material of the present invention has numerous hydrophilic polar functional groups, so have capillary percolation function, but due to the existence of polar functional group, make its wellability with not hydrophilic thermoplastic, compatibility all very poor, be difficult to evenly be added in plastics, so often need to add surface modifier at traditional field of plastics processing to carry out surface modification to filler, make it change or increase and wellability, the compatibility of plastics, to obtain enough mechanical properties to meet processing and the serviceability of material.But surface modification treatment often destroys the hydrophily of inorganic filler, sacrifice the capillary percolation performance of inorganic filler.The present invention is in order to keep the hydrophilic permeance property of inorganic filler, surface modification treatment is not carried out to filler, for different materials, by techniques such as classification are reinforced, filler is filled in plastics, be evenly distributed in plastic substrate with a kind of reunion state that can allow, define a kind of aggregate be piled into by countless hydrophilic inorganic filler particle and be evenly distributed on by the structure in the continuous plasticity network that not hydrophilic thermoplastic is formed.The heap masonry of hydrophilic inorganic filler particle connects into a continuous 3 D stereo capillary channel, provides the infiltrate characteristic that material is fabulous, the continuous 3 D stereo network that not hydrophilic thermoplastic is formed, and provides processing and the mechanical and physical performance of material.

(2): a kind of infiltration micro irrigation pipe and manufacture method thereof

A kind of there is unpowered, self adaptation, continue, the micro irrigation pipe of balanced infiltration function and preparation method thereof, its main feature has: the power of infiltrating irrigation tubing water outlet is not external pressure, gravity but capillary percolation and gel synaeresis, does not need external impetus; The control of carrying capacity is not by exterior mechanical or artificial, but automatically adapts to the demand of plant, and according to the height of outside soil water potential, Automatic-seepage water or stopping infiltration, have adaptation function; Excellent anti-clogging effect makes tubing can keep continuing infiltration effect; Capillary percolation function makes to irrigate uniform balance.Use this slight irrigation pipe racks and assist and irrigate required element with other, one " unpowered, self adaptation, lasting, balanced infiltration slight irrigation system " can be formed.Present invention process is easy, and cost is low, solve exist in prior art not environmentally, complex process, production efficiency is low, high in cost of production problem.This infiltration micro irrigation pipe comprises the slight irrigation material with capillary percolation function described in aforementioned (1).

A kind of infiltration micro irrigation pipe, this pipe is made up of double-decker, and outer in order to have the capillary percolation pipe (1) of capillary water seepage function, internal layer (2) is the perforate screwed pipe that recess has strip or circular opening (3),

The slight irrigation material that the employing of described capillary percolation pipe (1) has capillary percolation function is made, described slight irrigation material comprises: component A: thermoplastic, melt mass flow rate (MFR)≤4g/10min (GB/T3682-2000 of this thermoplastic, 190 DEG C/2.16kg, lower same); Component B: hydrophilic inorganic filler, the average grain diameter of described hydrophilic inorganic filler is 10 μm-1.6 μm; Auxiliary agent component C: composite antioxidant, described composite antioxidant is composited by Hinered phenols antioxidant and phosphite ester kind antioxidant 1: 1; Tissuemat E or atactic copolymerized polypropene that the high-flowability polypropylene of auxiliary agent component D: melt mass flow rate >=30g/10min, polyethylene or mean molecule quantity are greater than 3000; The parts by weight of above-mentioned each component are: A:100, B:45-300, C:0.2-1.0, D:1-5, by being taken in mixing roll mixing obtained by each component above-mentioned according to weighing balance.

The slight irrigation material of described capillary percolation function has in not hydrophilic thermoplastic matrix, equally distributedly pile up by hydrophilic inorganic filler particle the capillary that forms and to seep water network structure, make described capillary percolation pipe (1) can according to the flow of water of the soil contacted with it height, water can outwards be seeped water by the capillary channel with network structure of this tube wall inside or stop outside infiltration.

It is characterized in that the component A in its capillary percolation pipe component is selected from, polyethylene, polypropylene, polybutene, polystyrene, polyester, nylon, Merlon or based on above-mentioned thermoplastic blended/modification by copolymerization thing; Component B is selected from, the flyash that red mud, titanium dioxide, industrial power plant flue gas desulfating gypsum or boiler that the salt slurry that the condensation polymer of the oxide of metal oxide, hydroxide, carbonate, sulfate, silicon, the condensation polymer of silicate, aluminosilicate, lightweight or powdered whiting, silica gel, zeolite, talcum, hydration talcum, chlorine industry produce, Aluminum produce produce, or two or more mixture of above-mentioned inorganic filler.

It is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component E: antiseptic, described antiseptic is the metal ions such as silver, copper, zinc and compound thereof or mixture and nanometer metallic silver, the compound that to be fixed on titanium dioxide, barium sulfate, zeolite, silicate, silica gel, phosphate, active carbon and nano zine oxide, nano-titanium oxide, nano silicon oxide be carrier, its parts by weight are: 0.5-5.

It is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component F: keep away mouse agent, describedly keep away that mouse agent is cycloheximide, the slaine of terpenoid compound monomer, borate compounds, aryl phosphate ester or capsicim or above-mentioned two or more the mixture keeping away mouse agent, its parts by weight are: 6-15.

This Capillary penetration micro irrigation pipe has the aggregate be piled into by countless hydrophilic inorganic filler particle and is evenly distributed on the three-dimensional network capillary infiltration structure be made up of not hydrophilic thermoplastic.The heap masonry of hydrophilic inorganic filler particle connects into a continuous 3 D stereo capillary penetrating passage, provide the infiltrate characteristic that micro irrigation pipe is fabulous, not hydrophilic thermoplastic forms a continuous 3 D stereo plasticity network, ensure that processing and the mechanical and physical performance of micro irrigation pipe.This micro irrigation pipe has unpowered, self adaptation, lasting, balanced infiltration function, according to the flow of water height of the soil contacted with it, outwards can be seeped water or stop outside infiltration by the capillary network structure of pipe wall material inside.

A kind of anticlogging infiltration micro irrigation pipe, this pipe is made up of double-decker, and skin is gel protective layers (4), and internal layer is the capillary percolation pipe (1) with capillary water seepage function,

Described gel protective layers (4) is made up of non-woven fabrics and high-moisture-retention resin-oatmeal, and by volume, high-moisture-retention resin-oatmeal is the 0.5%-3% of non-woven fabrics, and described high-moisture-retention resin-oatmeal is thrown in non-woven fabrics space;

The slight irrigation material that the employing of described capillary percolation pipe (1) has capillary percolation function is made, and described slight irrigation material comprises: component A: thermoplastic, the melt mass flow rate≤4g/10min of this thermoplastic; Component B: hydrophilic inorganic filler, the average grain diameter of described hydrophilic inorganic filler is 10 μm-1.6 μm; Auxiliary agent component C: composite antioxidant, described composite antioxidant is composited by Hinered phenols antioxidant and phosphite ester kind antioxidant 1: 1; Tissuemat E or atactic copolymerized polypropene that the high-flowability polypropylene of auxiliary agent component D: melt mass flow rate >=30g/10min, polyethylene or mean molecule quantity are greater than 3000; The parts by weight of above-mentioned each component are: A:100, B:45-300, C:0.2-1.0, D:1-5, by being taken in mixing roll mixing obtained by each component above-mentioned according to weighing balance.

The slight irrigation material of described capillary percolation function has in not hydrophilic thermoplastic matrix, equally distributedly pile up by hydrophilic inorganic filler particle the capillary that forms and to seep water network structure, make described capillary percolation pipe (1) can according to the flow of water of the soil contacted with it height, water can outwards be seeped water by the capillary channel with network structure of this tube wall inside or stop outside infiltration.The water that capillary percolation pipe (1) oozes out makes high-moisture-retention resin-oatmeal expand and forms gel; in the high strength macromolecular scaffold network be made up of non-woven fabrics; the outer wall that gel protective layers (4) one side is close to capillary percolation pipe (1) makes gel and capillary channel form one, and one side contacts the anti-clogging protective layer being formed and have infiltration function with soil.

It is characterized in that the high-moisture-retention resin-oatmeal in its outer gel protective layers (4) is selected from: modified starch series, cellulose family, chitin kind, polyacrylic acid sodium salt, polyacrylamide, polyvinyl alcohol, vinyl acetate esters polymer and their copolymer, graft, derivative or modifier.

It is characterized by by volume, high-moisture-retention resin-oatmeal is the 0.5%-1% of non-woven fabrics.

It is characterized in that also being surrounded by gel protective layers (4) at the skin of its capillary percolation pipe (1).

A preparation method for micro irrigation pipe, the method comprises the following steps:

Preparation has the slight irrigation material of capillary percolation function: adopt twin-screw mixer comminutor or reciprocating singe screw mixing granulator machine, adopt the multistage material feeding process of three grades or level Four, the draw ratio of mixing granulator machine used is >=40: 1, exhaust outlet is provided with in every grade of charge door downstream, the long helical pitch that charge door place uses lead angle to be greater than 25 degree, outer screw diameter and screw inner diameter are than the screwing element of dark screw channel being 1.6 ~ 1.9, first by whole plastics, auxiliary agent and 40% ~ 60% filler, expect that mouth adds from mixing granulator owner, when containing nano-particle material, all nano-particle materials should first all add by the first order, and then in the second level, the third level, fourth stage charge door, according to 40% ~ 20%, 30% ~ 0%, remaining filler adds by the ratio of 20% ~ 0% step by step, mixing granulator obtains the slight irrigation material with capillary percolation function,

Preparation capillary percolation pipe (1): by the obtained slight irrigation material tube extruding machine extruding pipe material with capillary percolation function, then this tubing inflation, stretching and sizing are processed into the capillary percolation pipe (1) with capillary water seepage function, draw ratio is 1-7 times;

Perforate screwed pipe is imported in capillary percolation pipe (1), form internal layer (2), at the temperature than low 5 DEG C-20 DEG C of capillary percolation pipe melt initiation temperature degree, heat capillary percolation pipe (1), make it shrink, be tightly placed on perforate screwed pipe, obtained.

It is characterized in that draw ratio when processing capillary percolation pipe (1) is 2-4 times.

It is characterized in that the heating-up temperature of capillary percolation pipe (1) lower than its melt initiation temperature degree 5 DEG C-10 DEG C.

A preparation method for anticlogging infiltration micro irrigation pipe, comprises the following steps:

The preparation of gel protective layers (4): first loose type non-woven fabrics welded or be stitched into pipe, again high-moisture-retention resin-oatmeal is sprinkling upon on non-woven fabrics, high-moisture-retention resin-oatmeal is made to fall in non-woven fabrics hole, after 10-30 minute Steam treatment, the imbibition of high-moisture-retention resin-oatmeal, be fixed in non-woven fabrics hole firmly, form gel protective layers (4);

Finally gel protective layers (4) is enclosed within capillary percolation pipe (1) outward, obtaining can anticlogging infiltration micro irrigation pipe.

When after pipeline water-filling; under the effect of water; crosslinked high-moisture-retention resin-oatmeal can expand further in loose non-woven fabrics; because the expansion multiple after the water suction of high-moisture-retention resin-oatmeal can up to hundred times; but the non-water-soluble plastic network be made up of non-woven fabrics is height tension; so gel protective layers can tightly be attached to there is capillary percolation function wall of inner container on, form the close contact that capillary layer and gel layer are integrated.This close contact can improve osmotic effect further, and the high-moisture-retention resin-oatmeal simultaneously expanded also can be outwardly, forms the gel protective layers with soil particle good contact.

Compared to other water saving micro irrigation tubing, the technical program brings following beneficial effect:

(1) simple process, performance of anti-blockage and other combination property superior

Compared with existing hole creating technology (pore-forming that foams, waste old are pulverized and be filled to hole, wood powder or fiber-filled pore-forming, bundling capillary pipe, porous media etc.), the present invention adopts inorganic ultrafine powder (such as calcium carbonate powder) to be dispersed in plastics body, by the countless micropores of certain technique self-assembling formation.Inorganic ultrafine powder used, the synthesis technique of such as precipitated calcium carbonate, nano-calcium carbonate etc. is very ripe, and quite effective to the control of particle diameter and domain size distribution, product has been widely used in the fields such as papermaking, coating, modifying plastics.And the particle diameter of these inorganic ultrafine powders and domain size distribution are the bases determining bore size and Size Distribution.The technology of the present invention is all than existing patented technology technique relative ease, use hole creating technology of the present invention, penetrating passage automatically generates, the efficiency generating infiltration hole is higher, more effective to the control of pore-size and Size Distribution, countless continuous pores run through the surface of whole irrigation container, properties of product are more superior, so can at the wetting body of Zinc fractions continuous uniform, irrigate evenly, laying the region of the infiltrating irrigation container prepared by the present invention, its uniformity of irrigation water appilcation generally can reach more than 95%, improve irrigation efficiency, add output, cost is lower simultaneously, the market competitiveness is higher.

Because penetrating passage of the present invention is made up of the imperceptible pore of countless continuous print, evenly through the surface of whole irrigation tubing, pore size is far smaller than the crumb structure of soil; It is irrigated the speed of water seepage and water yield and depends on the demand of plant completely and balanced, there is not bulk water, by original for soil granule and capillary structure destruction, can not can not form thinner mud; Simultaneously because oozing out of irrigation water in the present invention does not need pressure, so there is not the mud back suction because pressure oscillation causes, so can not cause physical clogging; In addition, the present invention adopts a kind of composite structural design, turn increases a kind of block-resistant protection layer of new thought outside capillary percolation layer.This protective layer has dosed high water-retaining resin in loose non-woven fabrics skeleton, utilizes the characteristic of high water-retaining resin imbibition to form fine and close seamless gel protective layers, and changing original simple capillary percolation is that the compound of capillary percolation and gel is permeated.Gel layer is the hydrogel of a kind of " seamless ", also can not be blocked by root system of plant so it both can not have been blocked by soil particle; Because gel layer protection makes irrigation tubing of the present invention always keep moisture state, so there is not the electroless Ni-P-C-O plating because dry fouling causes; It is a kind of plane contact that simple capillary percolation element wall contacts with soil, and changes gel protective layers contact into, be then a kind of three-dimensional contact, increase the contact area of irrigation component and soil.So the ability that resistance against physical blocking of the present invention, chemical resistance blocking and anti-root system of plant block, far away higher than other scheme any.In addition, the thermoplastic that the present invention uses is added with antiseptic, so antibiont plugging performance is also very outstanding.Infiltration micro irrigation pipe prepared by comprehensive above the present invention has outstanding comprehensive anti-blockage capability.Capillary penetration micro irrigation pipe of the present invention also can add the agent of against murine evil as required, so the present invention possesses against murine evil ability.

(2) reduce operation, decrease pollution, raise the efficiency, reduce costs, benefit is obvious

The present invention does not use any " interleaving agent ", " surfactant ", surface modification treatment need not be carried out to filler, do not need increase water by the operation of part surface activating agent extracting yet, decrease operation, decrease pollution, reduce the cost of raw material and process costs, reduce labour intensity, improve work situation, improve production efficiency.In addition, for ensureing that irrigation component has necessary mechanical strength, the filling proportion of the filler that prior art uses is lower.Patent ZL200710071720.7 filler and plastic substrate be 30: 100 (the filling percentage of filler is 23.1%) the most at high proportion; Patent application 200910071769.1 filler and plastic substrate be 60: 100 (the filling percentage of filler is 37.5%) the most at high proportion.And the ratio of the filler that the technical program is added and plastics can up to 300: 100 (the filling percentage of filler be 75%), if market polyvinyl resin, ultra-fine filling material price are by 12000 yuan/ton, 2000 yuan/ton at present, the filler increasing by 37.5% ~ 51.9% can reduce the cost of raw material 3750 yuan/ton ~ 5190 yuan/ton.Even if do not consider that the cost of raw material owing to not using interleaving agent or surfactant to bring reduces, do not consider the reduction of production cost brought due to heating mixed processes need not be increased, only increase filler one and can reduce the cost of raw material and reach 45.5% ~ 53.6%.Economic benefit is fairly obvious.

(3) three-dimensional network capillary infiltration structure forms unique self adaptation Penetration Signature

This infiltration slight irrigation tubing has a kind of aggregate be piled into by countless hydrophilic inorganic filler particle and is evenly distributed on by the structure in the continuous plasticity network that not hydrophilic thermoplastic is formed.Not hydrophilic thermoplastic forms a continuous 3 D stereo plasticity network, provides the mechanical and physical performance of infiltration micro irrigation pipe.Hydrophilic inorganic filler particle pile up wherein in plastic network, form a continuous 3 D stereo capillary penetrating passage, provide the Penetration Signature that infiltration micro irrigation pipe is fabulous, the hydrogen bond that minor amount of water is formed strengthens the combination between this inorganic particulate, makes it to be run off by oozing out of water.The infiltration micro irrigation pipe with this structure is embedded in underground; permeate filling inorganic particle that is abundant on slight irrigation tube wall and that give prominence to outside or contact with soil particle and mix; form complete capillary percolation system; or be closely linked with gel protective layers; contacted with soil by gel layer, form complete capillary/gel compound osmotic system.When the flow of water of soil is lower, the water in tubing can ooze out outside pipe along these capillary channels, or enter soil automatically, or enters soil by gel protective layers, realizes irrigating.Along with the carrying out of the process of irrigation, the water content of soil constantly increases, until " flow of water " of infiltration micro irrigation pipe inside is identical with " flow of water " of soil, irrigates and terminates.Now, water, both soil water beinthebalancestate in infiltration micro irrigation pipe, infiltration micro irrigation pipe internal water is no longer to exosmosis.If add plant in this equilibrium state, the root system epidermis of plant is made up of a kind of pellicle, when the demand of plant growth makes " flow of water " of root system of plant inside be less than " flow of water " of soil, the soil water through the pellicle on root system surface to root system of plant internal penetration, enter in plant, make " flow of water " in plant to increase, until meet the demand of plant, plant no longer absorbs water, and infiltration micro irrigation pipe also no longer outwards supplies (oozing) water.Now, beinthebalancestate between water, the soil water, plant three in infiltration micro irrigation pipe, under the effect of the cohesive force entered between the osmotic pressure of the moisture in plant at root system of plant, hydrone and plant capillary passage, moisture is very fast to rise along plant trunk, simultaneously under plant transpiration pulling force, in plant, moisture arrives all positions needing moisture to grow.Along with the growth of plant, the transpiration of moisture in plant, " flow of water " of inside plants declines, in plant, capillary soil water, " flow of water " balance between infiltration micro irrigation pipe internal water three be destroyed, water in soil again maceration enters in plant, and the water in infiltration micro irrigation pipe supplements to soil again.So, go round and begin again, without stop.Owing to being always among a kind of dynamic equilibrium between moisture, capillary soil water, infiltration micro irrigation pipe internal water three in plant, constitute a kind of really economize on water most " unpowered, self adaptation, lasting, balanced infiltration slight irrigation system ".

(4) stretching scheme improves infiltration effect

Present invention employs stretching technique scheme.In order to observe the impact stretching and produce material, ESEM is used to observe the permeable membrane sample not stretching and stretch.The photo of these ESEMs shows the different-effect stretched with not stretching really.Surface and profile scanning electromicroscopic photograph that the surface scan electromicroscopic photograph that Fig. 4 is non-drawn samples, Fig. 5 are non-drawn samples, never the photo of drawn samples is visible, the sample interior do not stretched has had the penetrating passage be made up of the calcium carbonate granule gap of piling up in a large number, but these passages some do not get through, this is completely closed from the non-drawn samples surface of Fig. 4, Fig. 5, there is not hole and just can find out.Surface and profile scanning electromicroscopic photograph that the surface scan electromicroscopic photograph that Fig. 6 is drawn samples, Fig. 7 are drawn samples.From the photo of drawn samples, the sample interior stretched has the penetrating passage be made up of the calcium carbonate granule gap of piling up in a large number and more enriches through, some particle is squeezed out surface, and this exists a large amount of hole from the drawn samples surface of Fig. 6, Fig. 7 and just can find out.Stretch the extent of exfoliation not only exacerbated between filler and macromolecule matrix, the most important thing is to stretch and cause matrix to create strong squeezing action to filler, this extruding makes the filler in the difference interval being wrapped in matrix during melt-processed occur to reset displacement, it is through that this displacement delivers that weak part that extraneous pulling force makes filler break through the interval matrix of parcel forms between filler, and gap through between hydrophilic filler is the key forming penetrating passage.This gap will be far longer than the gap that prior art is formed due to interleaving agent or surfactant migration, and this gap is made up of hydrophilic granules completely, its water permeability is far superior to the particle with interleaving agent (oil substances) or surfactant process in existing scheme.From scientific common sense, surfactant is a kind of end group by oleophylic and hydrophilic end group material, when processing hydrophilic inorganic filler with it, hydrophilic one end is combined with filler, the other end of oleophylic outwards forms oil-wetted surface and is combined with macromolecule matrix, make filler and macromolecule matrix become an organic whole, just can have good mechanical property.Extensively adopt this processing method in plastic processing modification field, to realize the strong bonded between filler and macromolecule matrix, improve the bulk strength of material.But occur the field of micropore permeation in hope, this firmly combination is not hoped, so the use of surfactant is disadvantageous to generation micropore.In other words, surfactant is used instead to make pore-forming efficiency reduce.

(5) water saving, energy-conservation, cost saving

Use Microirrigation belt of the present invention can run under condition with no pressure, but always have certain potential energy so run under lower pressure often in practical matter due to water source, the operating pressure of douche generally only has 1 ~ 4 meter water column pressure, generally only provides by limit, field water head tank.As long as have water in water head tank, long-term unpowered uninterrupted automatic irrigation just can be realized, so energy consumption is few.Simultaneously because infiltration slight irrigation element is embedded in underground, both avoided as surface irrigation owing to cruelly leaking the ageing failure causing irrigation component under sunshine for a long time, do not hinder again ground field management farming, the required labour that pours water is less, so both saved the expense that infiltrating irrigation element frequently changes, in turn saved the operating cost of regular maintenance.

Existing all buried irrigations all belong to pressure or gravity irrigation, and that is, when not having human intervention, irrigation water will regardless of plant whether demand, flow to always anhydrous till.But infiltrating irrigation of the present invention is the sub-irrigation mode of a kind of " adaptive mode ", and in water-pouring process, not only upper soll layer keeps dry, between strain and surface evaporation reduce, and unlikely generation surface runoff and deep percolation, so infiltrating irrigation water is economized most.Infiltrating irrigation generally than surface irrigation water-saving 50% ~ 70%, than sprinkling irrigation water-saving 15% ~ 20%, than drip irrigation economize 10%.Avoid a large amount of expenses using computer and electromechanical meters to realize needed for Automated condtrol simultaneously.

(6) be unfavorable for weed growth, reduce disease and pest, improve crop yield

The present invention is the sub-irrigation of a kind of " adaptive mode ", can by fertilizer with medicament (if necessary) with water, be input near crop root according to the demand of plant self, make crop root soil often keep suitable moisture and nutrient, not only economize on water but also save fertilizer and medicament.Because infiltrating irrigation power comes from capillary percolation, do not produce bulk water, so can not the crumb structure and causing of spoiled soil harden, make soil always be in rarefaction, ventilation is good.Meanwhile, the present invention can make the humidity of soil surface and plant leaf surface reduce to minimum.According to surveying and determination, in booth infiltrating irrigation comparatively irrigate through furrow air humidity reduce by 28.5%., thus weeds not easily multiply growth, and the generation of sick worm, mushroom etc. also greatly reduces, and to preventing, root rot etc. is also very favourable, and particularly booth work is all the more so.Crops are at this moisture, and in air and the superior environment of nutrient, can be luxuriant grow, improves output.Compare with surface irrigation, corn growth rate is 18.4% ~ 36.1%; Wheat growth rate is 12.3% ~ 38.3%; Grape, vegetable increase production rate can reach 21% ~ 55%, and visible infiltrating irrigation effect of increasing production is very significant.

Accompanying drawing illustrates:

Fig. 1 is the schematic diagram of critical external compressive resistance infiltration micro irrigation pipe;

Fig. 2 is the sectional view of anticlogging infiltration micro irrigation pipe;

Fig. 3 is the schematic diagram of critical external compressive resistance, anticlogging infiltration micro irrigation pipe;

Fig. 4 is the surface scan Electronic Speculum figure of non-drawn samples;

Fig. 5 is section and the surface scan Electronic Speculum figure (note: in circle, display inorganic particle piles up and gap) of non-drawn samples;

Fig. 6 is the surface scan Electronic Speculum figure of drawn samples;

Fig. 7 is surface and the profile scanning Electronic Speculum figure of drawn samples;

Fig. 8 is the tester schematic diagram of test permeable membrane permeance property.

Detailed description of the invention

Below in conjunction with the drawings and the specific embodiments, the invention will be further described.

Embodiment one

By chlorine industry by-product salt slurry (slurry), after the drying of plate and frame filter press removing excessive moisture, 10 microns of (μ) salt slurry powder stuffings are sieved to obtain in grinding, use melt flow rate (MFR) (MFR) be 4 LLDPE (LLDPE) resin be base-material, the ratio of quality and the number of copies of filler and resin is 300: 100; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Mean molecule quantity is height flowing polyethylene (PE wax) of 4000, and addition is 1 mass fraction; Containing carbon black 40% black masterbatch 35 mass parts.By above-mentioned component by metering point three grades of interpolations; the first order adds the filler of all resins, auxiliary agent and corresponding proportion; every grade of ratio adding filler is according to 40%, 40%, 20% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 44: 1; extruding pelletization at 170-200 DEG C, then dry, packaging.

Embodiment two

Use the calcium carbonate of 6.5 microns (μm) to be filler, melt flow rate (MFR) (MFR) be 0.3 low density polyethylene (LDPE) (LDPE) resin be base-material, the ratio of quality and the number of copies of filler and resin is 200: 100; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) is height flowing polyethylene (PE) of 30, and addition is 1 mass fraction.Divide three grades by above-mentioned component by metering to add respectively in dual-screw pelletizer; the first order adds the filler of all resins, auxiliary agent and corresponding proportion; every grade of ratio adding filler is according to 40%, 40%, 20% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 40: 1; extruding pelletization at 170-190 DEG C, then dry, packaging.

Embodiment three

Use 1.6 microns of (μm) calcium carbonate to be filler, melt flow rate (MFR) (MFR) be 0.1 high density polyethylene (HDPE) (HDPE) resin be base-material, the ratio of quality and the number of copies of filler and resin is 150: 100; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) is height flowing polyethylene (PE) of 70, and addition is 3 mass fractions.Above-mentioned component is added in dual-screw pelletizer respectively by metering point level Four; the first order adds the filler of all resins, auxiliary agent and corresponding proportion; every grade of ratio adding filler is according to 30%, 30%, 30%, 10% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 48: 1; extruding pelletization at 180-210 DEG C, then dry, packaging.

Embodiment four

Use 2.5 microns of (μm) calcium carbonate to be filler, melt flow rate (MFR) (MFR) be 0.4 PP resin be base-material, the ratio of quality and the number of copies of filler and resin is 100: 100; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) is the high flow polypropylene (PP) of 100, and addition is 2 mass fractions.Divide three grades by above-mentioned component by metering to add respectively in dual-screw pelletizer; the first order adds the filler of all resins, auxiliary agent and corresponding proportion; every grade of ratio adding filler is according to 40%, 40%, 20% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 44: 1; extruding pelletization at 180-210 DEG C, then dry, packaging.

Embodiment five

Use nanometer calcium 10 mass fraction of 60 ~ 80 nano-scale, calcium carbonate 35 mass fraction of 1.6 microns (μm) and melt flow rate (MFR) (MFR) are high density polyethylene (HDPE) (HDPE) resin 100 mass fraction of ~ 0.1; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) is the height flowing polyethylene of 70, and addition is 5 mass fractions.Above-mentioned component is added in dual-screw pelletizer respectively by metering point level Four; the first order adds all resins, auxiliary agent and corresponding filler; every grade of ratio adding filler is according to 40%, 30%, 20%, 10% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 48: 1; extruding pelletization at 170-190 DEG C, then dry, packaging.

Embodiment six

Calcium carbonate 50 mass fraction of use 60 ~ 100 nanometer calcium 15 mass fractions, 1.6 microns (μm) and melt flow rate (MFR) (MFR) are polypropylene (PP) resin 100 mass fraction of ~ 4; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) be 100 high flow polypropylene (PP), addition be 3 mass fractions.Above-mentioned component is added in dual-screw pelletizer respectively by metering point level Four; the first order adds all resins, auxiliary agent and corresponding filler; every grade of ratio adding filler is according to 40%, 30%, 20%, 10% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 48: 1; extruding pelletization at 180-210 DEG C, then dry, packaging.

Embodiment seven

Nanometer calcium 30 mass fraction of use 60 ~ 150 nano-scale, 1.6 microns of (μm) calcium carbonate 420 mass fractions and melt flow rate (MFR) (MFR) are polyethylene (LDPE) resin 100 mass fraction of ~ 4; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Mean molecule quantity be 4000 Tissuemat E, addition be 2 mass fractions.Above-mentioned component is added in dual-screw pelletizer respectively by metering point level Four; the first order adds all resins, auxiliary agent and corresponding filler; every grade of ratio adding filler is according to 30%, 30%, 20%, 20% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 48: 1; extruding pelletization at 170-190 DEG C, makes masterbatch.The high density polyethylene (HDPE) (HDPE) being ~ 0.1 by the masterbatch of 550 mass parts and the melt flow rate (MFR) (MFR) of 200 mass parts is again metered into that screw diameter is 75 (φ 75), draw ratio (L/D) is in the dual-screw pelletizer of 36: 1 respectively; at 180-210 DEG C, extruding pelletization obtains material, then dry, packaging.

Embodiment eight

It is high density polyethylene (HDPE) (HDPE) resin 100 mass fraction of ~ 0.4 by nanometer calcium 10 mass fraction of 60 ~ 150 nano-scale, 1.6 microns of (μm) calcium carbonate 140 mass fractions and melt flow rate (MFR) (MFR); Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] pentaerythritol ester, addition be 0.3 mass fraction, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 mass fraction; Melt flow rate (MFR) (MFR) be 70 height flowing polyethylene, addition be 2 mass fractions.Above-mentioned component is added in FCM comminutor by metering respectively; birotor diameter is used to be that 100 (φ 100) extrude at 180-210 DEG C; it is 150 (φ 150) that the material block extruded falls into screw diameter; draw ratio (L/D) is in the single screw extrusion machine of 7: 1; material is obtained, then dry, packaging at 180-220 DEG C of extruding pelletization.

Embodiment nine

According to embodiment three, then add 3 parts of nano titanium oxides containing silver ion and obtain anti-clogging infiltrating irrigation material.

Embodiment ten

According to embodiment nine, then add 15 parts of microcapsules additives containing cycloheximide and obtain anti-clogging and keep away plague of rats infiltrating irrigation material.

Material in above-described embodiment 3 is obtained permeable membrane through blown film, and test its mechanical property and infiltration speed, acquired results is in table 1.Adopt the hot strength that GB/T1040.3-2006 measures, in table, performance data is relevant with preparation technology with the formula of material, does not represent this patent and can only obtain these performances.

The film sample performance table of table 1, material

Product	Hot strength (Mpa) is longitudinal/horizontal	Infiltration speed (l/m2-min)
			Embodiment one	8.24/2.36	0.13
Embodiment two	12.5/3.68	0.21
			Embodiment three	22.7/11.9	0.20
Embodiment four	30.2/18.4	0.19
			Embodiment five	25.3/15.9	0.15
Embodiment six	31.8/18.1	0.14
			Embodiment seven	23.6/9.9	0.17
Embodiment eight	27.8/13.2	0.18
			Embodiment nine	24.7/9.9	0.19
Embodiment ten	14.7/8.9	0.18

Embodiment 11

Use 1.6 microns of (μm) calcium carbonate to be filler, melt flow rate (MFR) (MFR) be 0.1 high density polyethylene (HDPE) (HDPE) resin be base-material, the ratio of weight and number of filler and resin is 150: 100; Auxiliary agent is: hindered phenol antioxygen is four [β-(3.5-di-t-butyls, 4-hydroxy phenyl) propionic acid] Ji Wusi ester alcohol, addition be 0.3 parts by weight, phosphite ester stabilizer is tricresyl phosphite (2.4-di-tert-butyl-phenyl) ester, addition is 0.3 parts by weight; Height flowing polyethylene (PE) that melt mass flow rate (MFR) is 70g/10min, addition is 3 parts by weight.Above-mentioned component is added in dual-screw pelletizer respectively by metering point level Four; the first order adds the filler of all resins, auxiliary agent and corresponding proportion; every grade of ratio adding filler is according to 30%, 30%, 30%, 10% of filler total amount; use screw diameter is 75 (φ 75), draw ratio (L/D) is the dual-screw pelletizer of 48: 1; extruding pelletization at 180-210 DEG C, then dry, be packaged to be the infiltration slight irrigation material with three-dimensional network capillary infiltration structure.

This material is sent into tube extruding machine extruding pipe material at 170-200 DEG C, then the capillary percolation pipe 1 with capillary network structure is made through 2 times of inflations, 4 times of stretchings, sizings, then this capillary percolation pipe 1 is enclosed within punching screwed pipe 2, the recess of punching screwed pipe has strip or circular opening 3, at 117 DEG C, heating makes capillary percolation pipe 1 shrink for 2 minutes, be tightly placed on punching screwed pipe 2, obtained there is unpowered, self adaptation, continue, " the critical external compressive resistance infiltration micro irrigation pipe " of balanced infiltration function as Fig. 1.

Embodiment 12

The sectional view of the micro irrigation pipe prepared by this embodiment as shown in Figure 2, be laid on the loose type non-woven fabrics in advance according to the girth ruling width of capillary percolation pipe 1 with the capillary percolation pipe 1 that embodiment 1 is obtained, wrap up while weld capillary percolation pipe 1 is wrapped in nonwoven stringing, then this multiple tube a pair rubber roll is flattened, high-moisture-retention resin-oatmeal is sprinkled upon outside nonwoven stringing, slight vibration non-woven fabrics, high-moisture-retention resin-oatmeal is made to fall in non-woven fabrics hole, be sprinkled into the amount of high-moisture-retention resin-oatmeal according to 1% of non-woven fabrics volume ratio, again the multiple tube including high-moisture-retention resin-oatmeal is placed in water vapor atmosphere process 30 minutes, make the imbibition of high-moisture-retention resin-oatmeal.Because of the inflatable hundred times of volume after the water suction of high-moisture-retention resin-oatmeal; so the high-moisture-retention resin-oatmeal particle after water suction by tightly " card " in the high strength macromolecular scaffold network be made up of non-woven fabrics; form gel protective layers 4; the high-moisture-retention resin-oatmeal of high level expansion also can be exposed outside non-woven fabrics; formed and internal layer capillary percolation pipe 1 and the close contact with outside soil; form the gel protective layers 4 that has some strength, obtained there is unpowered, self adaptation, continue, " the anti-clogging infiltration micro irrigation pipe " of balanced infiltration function.

Embodiment 13

The sectional view of the micro irrigation pipe prepared by this embodiment as shown in Figure 2.High-moisture-retention resin-oatmeal is sprinkled upon on the loose type non-woven fabrics according to the girth ruling width of the capillary percolation pipe 1 obtained by embodiment 1, slight vibration non-woven fabrics, high-moisture-retention resin-oatmeal evenly fallen in non-woven fabrics hole and is placed in water vapor atmosphere process 15 minutes, making the imbibition of high-moisture-retention resin-oatmeal.Be sprinkled into the amount of high-moisture-retention resin-oatmeal according to 0.5% of non-woven fabrics volume ratio.High-moisture-retention resin-oatmeal particle after water suction by tightly " card " in the high strength macromolecular scaffold network be made up of non-woven fabrics; formation gel protective layers 4 sewed up by the non-woven fabrics this being contained high-moisture-retention resin-oatmeal; be enclosed within the obtained capillary percolation pipe 1 of embodiment 1, obtained there is unpowered, self adaptation, continue, " the anti-clogging infiltration micro irrigation pipe " of balanced infiltration function.

Embodiment 14

As shown in Figure 3.The micro irrigation pipe external diameter made according to embodiment 11; tubulose gel protective layers 4 is stitched into the non-woven fabrics containing high-moisture-retention resin-oatmeal processing process; be enclosed within outside micro irrigation pipe that embodiment 11 makes, obtained there is unpowered, self adaptation, continued, " critical external compressive resistance, the anti-clogging infiltration micro irrigation pipe " of balanced infiltration function.

Material in embodiment 11 is obtained permeable membrane through blown film, and test its mechanical property and infiltration speed, acquired results is in table 2.Adopt the hot strength that GB/T1040.3-2006 measures, in table, performance data is relevant with preparation technology with the formula of material, does not represent this patent and can only obtain these performances.

Table 2, permeable membrane properties of sample table

Infiltration speed data adopts following method of testing to obtain:

The tester of test permeable membrane permeance property as shown in Figure 8.In conjunction with diagram, the use of the tester of test permeable membrane permeance property and method of testing are described as follows:

Together with being rotatably connected with powder gland 6 on screwed powder chassis 5, form the cavity loading and there is the soil of capillary percolation function.Before loading soil, what do not rotated in powder chassis 5 and powder gland 6 is too tight, the space allowing it have to move up and down.After soil is filled cavity, by the surface face tissue wiped clean of edge on powder gland with osmosis membrane to be measured, permeable membrane sample 9 in covering.Permeable membrane sample 9 should be die-cut or be cut into and the outer diametrically identical disk of powder gland 6 in advance.Again seal gasket 10 is pressed on permeable membrane print, screws with the film sample gland 11 with spiral, film sample is tightly fixed on soil cavity, form testing cassete.Subsequently, constantly vibration test box gently, constantly slowly screws powder chassis 5 with spanner by screwing groove 7, until permeable membrane print and soil closely flat contact comprehensively.Be provided with some grooves in film sample gland 11 outer, groove is built with O-ring seal 8.The transparent graduated cylinder 12 of the graduated glass material of band or plastic material is arranged on testing cassete.O-ring seal 8 plays effect that is fixing and sealing.Pour in graduated cylinder by water during test, the soil due to drying has the lower flow of water, and the water of graduated cylinder is through permeable membrane constantly to soil permeability, and record liquid level over time, records the permeability rate of permeable membrane sample.Also can weigh to testing cassete before and after water suction, record the permeability rate of permeable membrane sample.

V = \frac{W - W_{0}}{M}

Or

V = \frac{L_{0} - L}{M}

In formula:

V is the permeability rate of unit area, and unit is g/m ²-min or l/m ²-min;

W or L is the weight of testing cassete after the water suction of unit time or the milliliter number of the rear graduated cylinder liquid level of water suction;

W ₀or L ₀for the weight of the front testing cassete that absorbs water or the milliliter number of the front graduated cylinder liquid level of water suction;

M is the area that test membrane sample contacts with water.

Because the size of the structure of the capillary percolation characteristic of soil and soil, character, soil particle and particle size distribution and initial water content relevant, also relevant with the thickness of test sample film or sheet, think can the permeance property of osmotic component of parallel evaluation different formulations and different preparation method processing, ensure the repeatability of test, except controlling to test except the thickness of sample, same soil should be selected when evaluating the Penetration Signature of permeable membrane, should ensure that the particle size of soil particle is identical with domain size distribution simultaneously.Find under study for action, select precipitated calcium carbonate to have good data redundancy, recommendation dries commercially available 800 orders after 2 hours or 1200 order precipitated calcium carbonates at 110 DEG C.

Those skilled in the art can make replacement or modification according to content disclosed by the invention and the art technology grasped to content of the present invention; but these replacements or modification should not be considered as disengaging the present invention design, and these replacements or modification are all in the interest field of application claims protection.

Claims

1. permeate a micro irrigation pipe, this pipe is made up of double-decker, and outer in order to have the capillary percolation pipe (1) of capillary water seepage function, internal layer (2) is the perforate screwed pipe that recess has strip or circular opening (3),

The slight irrigation material that the employing of described capillary percolation pipe (1) has capillary percolation function is made, and described slight irrigation material comprises: component A: thermoplastic, the melt mass flow rate≤4g/10min of this thermoplastic; Component B: hydrophilic inorganic filler, the average grain diameter of described hydrophilic inorganic filler is 10 μm-1.6 μm; Auxiliary agent component C: composite antioxidant, described composite antioxidant is composited by Hinered phenols antioxidant and phosphite ester kind antioxidant 1: 1; Tissuemat E or atactic copolymerized polypropene that the high-flowability polypropylene of auxiliary agent component D: melt mass flow rate >=30g/10min, polyethylene or mean molecule quantity are greater than 3000; The parts by weight of above-mentioned each component are: A:100, B:45-300, C:0.2-1.0, D:1-5, by being taken in mixing roll mixing obtained by each component above-mentioned according to weighing balance;

2. permeate micro irrigation pipe as claimed in claim 1, it is characterized in that the component A in its capillary percolation pipe component is selected from, polyethylene, polypropylene, polybutene, polystyrene, polyester, nylon, Merlon; Component B is selected from, the flyash that red mud, titanium dioxide, industrial power plant flue gas desulfating gypsum or boiler that the salt slurry that the condensation polymer of the oxide of metal oxide, hydroxide, carbonate, sulfate, silicon, the condensation polymer of silicate, aluminosilicate, silica gel, zeolite, talcum, hydration talcum, chlorine industry produce, Aluminum produce produce, or two or more mixture of above-mentioned inorganic filler.

3. permeate micro irrigation pipe as described in claim 1, it is characterized in that, in its B component, also can adding nano-particle material, its grain size is 60nm ~ 150nm, and adding parts by weight is≤10.

4. permeate micro irrigation pipe as described in claim 1, it is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component E: antiseptic, described antiseptic is silver ion, copper ion, zinc metal ion and compound thereof or mixture and nanometer metallic silver, the compound that to be fixed on titanium dioxide, barium sulfate, zeolite, silicate, silica gel, phosphate, active carbon and nano zine oxide, nano silicon oxide be carrier, its parts by weight are: 0.5-5.

5. permeate micro irrigation pipe as described in claim 1, it is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component F: keep away mouse agent, describedly keep away that mouse agent is cycloheximide, the slaine of terpenoid compound monomer, borate compounds, aryl phosphate ester or capsicim or above-mentioned two or more the mixture keeping away mouse agent, its parts by weight are: 6-15.

6. an anticlogging infiltration micro irrigation pipe, this pipe is made up of double-decker, and skin is gel protective layers (4), and internal layer is the capillary percolation pipe (1) with capillary water seepage function,

The slight irrigation material of described capillary percolation function has in not hydrophilic thermoplastic matrix, equally distributedly pile up by hydrophilic inorganic filler particle the capillary that forms and to seep water network structure, make described capillary percolation pipe (1) can according to the flow of water of the soil contacted with it height, water can outwards be seeped water by the capillary channel with network structure of this tube wall inside or stop outside infiltration; The water that capillary percolation pipe (1) oozes out makes high-moisture-retention resin-oatmeal expand and forms gel; in the high strength macromolecular scaffold network be made up of non-woven fabrics; the outer wall that gel protective layers (4) one side is close to capillary percolation pipe (1) makes gel and capillary channel form one, and one side contacts the anti-clogging protective layer being formed and have infiltration function with soil.

7. anticlogging infiltration micro irrigation pipe as described in claim 6, is characterized in that the high-moisture-retention resin-oatmeal in its outer gel protective layers (4) is selected from: modified starch series, cellulose family, chitin kind, polyacrylic acid sodium salt, polyacrylamide, polyvinyl alcohol, vinyl acetate esters polymer and their copolymer, graft, derivative or modifier.

8. anticlogging infiltration micro irrigation pipe as described in claim 6, is characterized by by volume, and high-moisture-retention resin-oatmeal is the 0.5%-1% of non-woven fabrics.

9. anticlogging infiltration micro irrigation pipe as described in claim 6, it is characterized in that, in its B component, also can adding nano-particle material, its grain size is 60nm ~ 150nm, and adding parts by weight is≤10.

10. anticlogging infiltration micro irrigation pipe as described in claim 6, it is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component E: antiseptic, described antiseptic is silver ion, copper ion, zinc metal ion and compound thereof or mixture and nanometer metallic silver, the compound that to be fixed on titanium dioxide, barium sulfate, zeolite, silicate, silica gel, phosphate, active carbon and nano zine oxide, nano silicon oxide be carrier, its parts by weight are: 0.5-5.

11. anticlogging infiltration micro irrigation pipes as described in claim 6, it is characterized in that the slight irrigation material with capillary percolation function, also containing adjuvant component F: keep away mouse agent, describedly keep away that mouse agent is cycloheximide, the slaine of terpenoid compound monomer, borate compounds, aryl phosphate ester or capsicim or above-mentioned two or more the mixture keeping away mouse agent, its parts by weight are: 6-15.

12., as the infiltration micro irrigation pipe as described in one of in claim 1-5, is characterized in that also being surrounded by gel protective layers (4) at the skin of its capillary percolation pipe (1).

13. as permeated the preparation method of micro irrigation pipe as described in any one in claim 1-5, the method comprises the following steps:

The preparation method of 14. infiltration micro irrigation pipes as described in claim 13, is characterized in that draw ratio when processing capillary percolation pipe (1) is 2-4 times.

The preparation method of 15. infiltration micro irrigation pipes as described in claim 13, is characterized in that the heating-up temperature of capillary percolation pipe (1) 5-10 DEG C lower than its melt initiation temperature degree.

16., as the preparation method of anticlogging infiltration micro irrigation pipe as described in any one in claim 6-11, comprise the following steps:

Preparation has the slight irrigation material of capillary percolation function: with twin-screw mixer comminutor or reciprocating singe screw mixing granulator machine, adopt the multistage material feeding process of three grades or level Four, the draw ratio of mixing granulator machine used is >=40: 1, exhaust outlet is provided with in every grade of charge door downstream, the long helical pitch that charge door place uses lead angle to be greater than 25 degree, outer screw diameter and screw inner diameter are than the screwing element of dark screw channel being 1.6 ~ 1.9, first by whole plastics, auxiliary agent and 40% ~ 60% filler, expect that mouth adds from mixing granulator owner, when containing nano-particle material, all nano-particle materials should first all add by the first order, and then in the second level, the third level, fourth stage charge door, according to 40% ~ 20%, 30% ~ 0%, remaining filler adds by the ratio of 20% ~ 0% step by step, mixing granulator obtains the slight irrigation material with capillary percolation function,