CN105669087A - Thermal insulation material with anti-seepage function and preparation method - Google Patents
Thermal insulation material with anti-seepage function and preparation method Download PDFInfo
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- CN105669087A CN105669087A CN201610061160.6A CN201610061160A CN105669087A CN 105669087 A CN105669087 A CN 105669087A CN 201610061160 A CN201610061160 A CN 201610061160A CN 105669087 A CN105669087 A CN 105669087A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/20—Polyamides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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Abstract
The invention discloses a thermal insulation material with an anti-seepage function. The thermal insulation material is prepared from raw materials in parts by weight as follows: 32-44 parts of bentonite, 8-16 parts of graphite, 6-14 parts of vanadium pentoxide, 5-9 parts of mica powder, 4-8 parts of sodium alginate, 3-7 parts of titanium dioxide, 1-5 parts of aluminum powder and 2-4 parts of polyamides. The thermal insulation material has the good effects as follows: the prepared thermal insulation material has excellent anti-seepage performance and compression resistance/fracture resistance, the service life is long, the construction is simple, and popularization and application are facilitated.
Description
Technical field
The present invention relates to building material technical field, particularly relate to a kind of lagging material and the method for making with antiseepage effect.
Background technology
Lagging material is a kind of material or matrix material of slowing down the heat flow rate produced by conduction, convection current, radiation. Due to the high thermal resistance of material, lagging material hinders hot-fluid turnover buildings. Lagging material has the features such as light weight, loose, porous, thermal conductivity are little usually. In building heat preservation, people usually under normal temperature, thermal conductivity < 0.174W/(m K) material become lagging material. China's lagging material is numerous in variety; output is also very big; occupy second place of the world, mainly comprise extrusion molding polystyrene foamed plastics (extruded sheet), mold pressing type polystyrene foamed plastics (regular foam plate), sprayed rigid foam polyurethane, hard-foam polyurethane warming plate, multicellular glass, foamed concrete (foam mortar), light skeletal thermal insulation concrete (haydite concrete etc.), inorganic heat insulation mortar (kervit microbead insulated sand slurry), polyphenyl particle heat-insulating mortar, mineral wool (rock wool), resol plate, swelling perlite heat-insulating mortar etc.
Building and industry adopt good lagging material, often can play a multiplier effect. Statistics shows, often uses one ton of mineral wool insulating product in building, within 1 year, can save one ton of oil. The insulation of industrial equipments and pipeline, adopts good adiabatic measure and material, can significantly reduce production energy consumption and cost, environmental protect, have good economic benefit simultaneously. As, in: industrial equipments and pipework, good heat-retaining condition, can make calorific loss reduce about 95%, the investment about a year being generally used for lagging material can be regained by the energy saved.
Due to singularity and the randomness of building products, there are the quality problems of this or that in the completion of many engineerings after paying, and especially the existence of seepage, cracking problem, makes us extremely having a headache. The general tide of the lighter's metope, jaundice, blackout, affect attractive in appearance; Severe one current along wall under, ftracture, peel off, directly impact is normal uses. Along with the development of science and technology, lagging material is had higher requirement by people, not only requires that lagging material thermal conductivity is low, requires that the water absorbability of lagging material is low simultaneously, has hydrophobic nature; Also should there is very strong cohesive force with cement, concrete etc., form continuous print insulation water-proof layer, all kinds of corrosion etc. can be resisted for a long time.
Application publication number CN104371654A(application number 201410529026.5) Chinese invention patent document disclose the making method of a kind of water-proof heat-insulation material, be made up of the raw material of following weight part: silica 1-5 parts, aluminium sesquioxide 1-3 part, ethanol 0.3-1.2 part, ethene 2-8 part, sodium hydroxide 0.2-0.9 part, lead powder 2-6 part, Silver Nitrate 8-15 part and liquid crystal material 10-26 part.Application publication number CN105254209A(application number 201510668193.2) Chinese invention patent document disclose the making method of a kind of water-proof heat-insulation material, be made up of the raw material of following weight part: polyethylene 15-25 part, get radix scrophulariae 5-12 part, silicon-dioxide 3-5 part, polypropylene 1-3 part, resin 5-8 part, pollen 0.5-2 part, MAGNESIUM METAL 3-5 part, Silver Nitrate 5-11 part, aluminium sesquioxide 10-50 part, pearl powder 10-50 part, talcum powder 2-12 part, sodium hydroxide 2-10 part and paraffin 1-3 part. Application publication number CN104310850A(application number 201410491659.1) Chinese invention patent document disclose a kind of anti-seepage heat preservation material, be made up of the raw material of following weight part: yellow ground soil 55-80 part, pearlstone 30-50 part, sierozem power 28-40 part, hydrophobic resin 15-28 part, quartz sand 10-25 part, stearic acid 8-16 part, sodium formiate 5-20 part, commercial synthesis fiber 8-16 part, inorganic solidification agent 5-8 part, filler 8-15 part, water 16-32 part.
Existing lagging material can not be satisfied with daily use needs in water-impervious, energy-conservation, fire prevention, insulation, cost of manufacture etc., it is necessary to optimizes further.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of lagging material with antiseepage effect and the method for making of preparing simple, scientific formulation, this lagging material cost is low, excellent property.
The technical scheme of the present invention is:
The lagging material with antiseepage effect, is prepared from by following raw materials according, is weight part: wilkinite 32-44, graphite 8-16, Vanadium Pentoxide in FLAKES 6-14, mica powder 5-9, sodium alginate 4-8, titanium dioxide 3-7, aluminium powder 1-5, polymeric amide 2-4.
In preferred scheme, wilkinite 36-40, graphite 10-14, Vanadium Pentoxide in FLAKES 8-12, mica powder 6-8, sodium alginate 5-7, titanium dioxide 4-6, aluminium powder 2-4, polymeric amide 2.5-3.5.
More preferably, wilkinite 38, graphite 12, Vanadium Pentoxide in FLAKES 10, mica powder 7, sodium alginate 6, titanium dioxide 5, aluminium powder 3, kymene.
The preparation method with the lagging material of antiseepage effect, step is as follows:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, sieve, obtain mixing fine powders, clear water, polymeric amide and linking agent is added in mixing fine powders, continue to stir 30-50 minute (preferably continuing to stir 35-45 minute), obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then it is heated to 70-80 DEG C (being preferably heated to 73-77 DEG C), add Vanadium Pentoxide in FLAKES, hydrophober and dispersion agent, stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 200-400 order stainless steel sift to filter (preferred gained solution is placed on 250-350 order stainless steel sift to filter), and gained filtered liquid is through vacuum outgas, for subsequent use;
(3) step (1) gained base-material is placed in mould, 15-25 minute it is incubated (at being preferable over 42-48 DEG C, being incubated 18-22 minute) at 40-50 DEG C, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 56-70 DEG C of pressurize 1-3 hour (being preferably warming up to 60-66 DEG C of pressurize 1.5-2.5 hour), then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
The preparation method of the above-mentioned lagging material with antiseepage effect, it is preferable that scheme be that step (1) is crossed 140-170 order sieve (preferred cross 150-160 order sieve, mistake 155 order sieve more preferably).
The preparation method of the above-mentioned lagging material with antiseepage effect, preferred scheme is, in step (1), the amount of clear water is 0.7-1.5 times (doubly, the amount of clear water more preferably is 1.1 times of described bulk drug amount to the 0.9-1.3 that the amount of preferred clear water is described bulk drug amount) of described bulk drug amount.
The preparation method of the above-mentioned lagging material with antiseepage effect, preferred scheme is, the melamine resin (preferred described linking agent is massfraction is the melamine resin of 1.2-1.4%, and described linking agent more preferably is massfraction is the melamine resin of 1.3%) of to be massfraction the be 1.1-1.5% of linking agent described in step (1).
The preparation method of the above-mentioned lagging material with antiseepage effect, preferred scheme is, the silicone resin (preferred described hydrophober is massfraction is the silicone resin of 1.3-1.7%, and described hydrophober more preferably is massfraction is the silicone resin of 1.5%) of to be massfraction the be 1-2% of hydrophober described in step (2).
The preparation method of the above-mentioned lagging material with antiseepage effect, preferred scheme is, the Sodium hexametaphosphate 99 (preferred described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.2%-1.6%, and described dispersion agent more preferably is massfraction is the Sodium hexametaphosphate 99 of 1.4%) of to be massfraction the be 1.1%-1.7% of dispersion agent described in step (2).
The preparation method of the above-mentioned lagging material with antiseepage effect, it is preferable that scheme be that in step (2), the time of vacuum outgas is 20-40 minute (time of preferred vacuum outgas is 25-35 minute, and the time of vacuum outgas more preferably is 30 minutes).
Gained of the present invention has the lagging material compatibility science of antiseepage effect, and preparation technology is simply efficient. In addition, the excellent results of the present invention also shows:
1, the raw materials used proportioning science of gained lagging material of the present invention, it is ensured that each component reaches optimum synergistic effect, and then makes material property optimization;
2, gained lagging material light weight of the present invention, physicochemical property is stablized, heat-insulating, fire-preventing, high-low temperature resistant, anti-ageingization, is a kind of environment-friendly type high performance lagging material;
3, gained lagging material of the present invention has excellent barrier performance, resistance to compression/fracture resistance, it may also be useful to life-span length, construction are simply, easy to utilize.
Accompanying drawing explanation
Fig. 1 is the permeability coefficient change schematic diagram of two groups of lagging materials.
Embodiment
The technical scheme of the present invention is described in detail below in conjunction with embodiment and test example, but protection domain is not limited to this.
Embodiment 1 has the lagging material of antiseepage effect, is prepared from by following raw materials according, is weight part (300kg/ part): wilkinite 32 parts, 8 parts, graphite, Vanadium Pentoxide in FLAKES 6 parts, mica powder 5 parts, sodium alginate 4 parts, titanium dioxide 3 parts, aluminium powder 1 part, polymeric amide 2 parts.
The preparation method of the lagging material with antiseepage effect is:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, cross 140 order sieves, obtain mixing fine powders, the clear water of 0.7 times of described bulk drug amount, polymeric amide and linking agent (described linking agent is massfraction is the melamine resin of 1.1%) is added in mixing fine powders, continue to stir 30 minutes, obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then 70 DEG C it are heated to, add Vanadium Pentoxide in FLAKES, hydrophober (described hydrophober is massfraction is the silicone resin of 1%) and dispersion agent (described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.1%), stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 200 order stainless steel sifts to filter, and gained filtered liquid was through vacuum outgas 20 minutes, for subsequent use;
(3) step (1) gained base-material is placed in mould, at 40 DEG C, it is incubated 15 minutes, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 56 DEG C of pressurizes 1 hour, then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
Embodiment 2 has the lagging material of antiseepage effect, is prepared from by following raw materials according, is weight part (140kg/ part): wilkinite 44 parts, 16 parts, graphite, Vanadium Pentoxide in FLAKES 14 parts, mica powder 9 parts, sodium alginate 8 parts, titanium dioxide 7 parts, aluminium powder 5 parts, polymeric amide 4 parts.
The preparation method of the lagging material with antiseepage effect is:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, cross 170 order sieves, obtain mixing fine powders, the clear water of 1.5 times of described bulk drug amounts, polymeric amide and linking agent (described linking agent is massfraction is the melamine resin of 1.5%) is added in mixing fine powders, continue to stir 50 minutes, obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then 80 DEG C it are heated to, add Vanadium Pentoxide in FLAKES, hydrophober (described hydrophober is massfraction is the silicone resin of 2%) and dispersion agent (described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.7%), stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 400 order stainless steel sifts to filter, and gained filtered liquid was through vacuum outgas 40 minutes, for subsequent use;
(3) step (1) gained base-material is placed in mould, at 50 DEG C, it is incubated 25 minutes, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 70 DEG C of pressurizes 3 hours, then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
Embodiment 3 has the lagging material of antiseepage effect, is prepared from by following raw materials according, is weight part (260kg/ part): wilkinite 36 parts, 10 parts, graphite, Vanadium Pentoxide in FLAKES 8 parts, mica powder 6 parts, sodium alginate 5 parts, titanium dioxide 4 parts, aluminium powder 2 parts, polymeric amide 2.5 parts.
The preparation method of the lagging material with antiseepage effect is:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, cross 150 order sieves, obtain mixing fine powders, the clear water of 0.9 times of described bulk drug amount, polymeric amide and linking agent (described linking agent is massfraction is the melamine resin of 1.2%) is added in mixing fine powders, continue to stir 35 minutes, obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then 73 DEG C it are heated to, add Vanadium Pentoxide in FLAKES, hydrophober (described hydrophober is massfraction is the silicone resin of 1.3%) and dispersion agent (described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.2%), stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 250 order stainless steel sifts to filter, and gained filtered liquid was through vacuum outgas 25 minutes, for subsequent use;
(3) step (1) gained base-material is placed in mould, at 42 DEG C, it is incubated 18 minutes, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 60 DEG C of pressurizes 1.5 hours, then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
Embodiment 4 has the lagging material of antiseepage effect, is prepared from by following raw materials according, is weight part (180kg/ part): wilkinite 40 parts, 14 parts, graphite, Vanadium Pentoxide in FLAKES 12 parts, mica powder 8 parts, sodium alginate 7 parts, titanium dioxide 6 parts, aluminium powder 4 parts, kymene .5 part.
The preparation method of the lagging material with antiseepage effect is:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, cross 160 order sieves, obtain mixing fine powders, the clear water of 1.3 times of described bulk drug amounts, polymeric amide and linking agent (described linking agent is massfraction is the melamine resin of 1.4%) is added in mixing fine powders, continue to stir 45 minutes, obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then 77 DEG C it are heated to, add Vanadium Pentoxide in FLAKES, hydrophober (described hydrophober is massfraction is the silicone resin of 1.7%) and dispersion agent (described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.6%), stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 350 order stainless steel sifts to filter, and gained filtered liquid was through vacuum outgas 35 minutes, for subsequent use;
(3) step (1) gained base-material is placed in mould, at 48 DEG C, it is incubated 22 minutes, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 66 DEG C of pressurizes 2.5 hours, then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
Embodiment 5 has the lagging material of antiseepage effect, is prepared from by following raw materials according, is weight part (220kg/ part): wilkinite 38 parts, 12 parts, graphite, Vanadium Pentoxide in FLAKES 10 parts, mica powder 7 parts, sodium alginate 6 parts, titanium dioxide 5 parts, aluminium powder 3 parts, kymene part.
The preparation method of the lagging material with antiseepage effect is:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, cross 155 order sieves, obtain mixing fine powders, the clear water of 1.1 times of described bulk drug amounts, polymeric amide and linking agent (described linking agent is massfraction is the melamine resin of 1.3%) is added in mixing fine powders, continue to stir 40 minutes, obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then 75 DEG C it are heated to, add Vanadium Pentoxide in FLAKES, hydrophober (described hydrophober is massfraction is the silicone resin of 1.5%) and dispersion agent (described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.4%), stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 300 order stainless steel sifts to filter, and gained filtered liquid was through vacuum outgas 30 minutes, for subsequent use;
(3) step (1) gained base-material is placed in mould, at 45 DEG C, it is incubated 20 minutes, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 63 DEG C of pressurizes 2 hours, then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
Wilkinite: wilkinite, also known as otaylite, amargosite, is take montmorillonite as the clay of main component. Main chemical compositions is silicon-dioxide, aluminium sesquioxide and water, also containing elements such as iron, magnesium, calcium, sodium, potassium. There is many premium propertiess such as good water-absorbent, swelling property, cementing properties, dispersion, thixotropy and cationic exchange. Wilkinite is widely used, and can make support of the catalyst, siccative in chemical industry; Machinofacture is done binding agent; In construction industry except can doing coating stabilization agent, cement mixture, there is because of it water swellability and low-permeability, also it is a kind of natural clay impervious material being comparatively applicable to.
Vanadium Pentoxide in FLAKES: orange-yellow, brick-red, reddish-brown crystalline powder or grey black sheet. Intermediate oxide, but based on acidity. More than 700 DEG C significantly volatilizations. 700～1125 DEG C are decomposed into oxygen and vanadium tetraoxide, and this characteristic makes it many organic catalyzer with inorganic reaction. For strong oxidizer, easily it is reduced into various suboxide. It is slightly soluble in water, easily forms stable colloidal solution.
Mica powder: mica powder is a kind of non-metallic minerals, containing multiple composition, wherein mainly contains SiO2, content is generally at about 49%, Al2O3Content is about 30%. Mica powder has good elasticity, toughness. The characteristic such as insulativity, high temperature resistant, acid and alkali-resistance, corrosion-resistant, strong adhesion is a kind of excellent additive. It is widely used in the industries such as electrical equipment, welding electrode, rubber, plastics, papermaking, paint, coating, pigment, pottery, makeup, building material, and purposes is extremely extensive. Mica can significantly change a series of physics modulus of material, forms or change the visco-elasticity of material. This kind of material high-level efficiency ground absorbing vibrational energy, weakening vibrations ripple and sound wave. In addition, vibrations ripple and sound wave are formed between mica wafer and repeatedly reflect, and also cause the effect weakening its energy. Mica powder is also used to preparation noise elimination, sound insulation, damping coating.
Sodium alginate: be a kind of natural polysaccharide, there is the stability needed for pharmaceutical preparation auxiliary material, solvability, viscosity and security. Can be made into film, for candy release packaging. Can be used for increasing Q volume of blood and maintaining blood pressure, get rid of the histamine toxoid that produces of burn and the whole body such as wound is lost blood, the stablizing of the perioperatively recycle system, bleeding profusely property shock, burn shock, high fever and acute dysentery dewaters, result for the treatment of is good. Also have and cholesterol is excreted, suppress Pb, Cd, Sr are absorbed by the body and protect gi tract, whole intestines, fat-reducing, hypoglycemic effect. Main on medicament it is used as suspending agent, emulsifying agent, sticky dose, the capsule material etc. of micro-capsule. Sodiun alginate is the macromolecular compound of a kind of high viscosity. The difference of it and starch, Mierocrystalline cellulose etc., is that it has carboxyl, is the high polyuronide that the aldehyde radical of beta-D-mannuronic acid is formed with glycosides key. Its functional property is as follows: (1) wetting ability is strong, can dissolve in cold water and warm water, forms very sticky thick uniform solution. (2) true solution formed has flexibility, homogeneity and other good characteristics that other analogues are difficult to obtain. (3) effect with very strong protective colloid, the emulsifying power of grease is strong. (4) add the metal-salts such as aluminium, barium, calcium, copper, iron, lead, zinc, nickel in the solution, insoluble alginate will be generated. These metal-salts are the buffer reagents of sodium, the phosphoric acid salt of potassium, acetate etc., it is possible to suppress, delayed setting. (5) pH value is 7 usually, in neutral, can adjust between 4-10. (6) it is wire polymer electrolyte, can be made into tough fiber (alginate fiber) or film, have and prevent be full of cracks effect. (7) tackiness is little, is applicable to warp size, the demoulding etc.
Titanium dioxide: white solid or pulverous intermediate oxide is a kind of white inorganic pigment, has nontoxic, best opacity, best whiteness and luminance brightness, is considered as a kind of white pigment that performance is best in the world at present. It is widely used in the industry such as coating, plastics, papermaking, printing-ink, chemical fibre, rubber, makeup. Its fusing point is very high, to thermally-stabilised, is used to manufacture refractory glass, glaze, enamel, potter's clay, high temperature resistant experimental ware etc. Material of construction adds titanium dioxide composition, it is possible to decompose the partial contamination thing in air.
Polymeric amide: it is the general name of the superpolymer containing amide group in macromolecular main chain repeating unit.There is good over-all properties, comprise mechanical property, thermotolerance, wearability, chemical proofing and self lubricity, and frictional coefficient is low, there is certain flame retardant resistance, it is easy to processing, is suitable for by glass fibre and other filler filling enhancing modified, it is to increase performance and broadened application scope.
Test example gained of the present invention has the performance research of the lagging material (embodiment 5) of antiseepage effect:
1. heat-insulating property research
1.1 experiment materials and method
The test specimen being of a size of 30cm × 30cm × 5cm size made by the lagging material that gained of the present invention has antiseepage effect; Gained test specimen is put into that temperature is 23 ± 2 DEG C, relative humidity be 50 ± 5% standard curing box maintenance 28 days, in the process of standard curing box maintenance, test the change of its thermal conductivity with TW-III heat flowmeter formula conductometer (purchasing in Beijing Jian Tong great achievement Science and Technology Ltd.). Time corresponding to test is 3,7,12,16,23 and 28 days. Result is as shown in table 1.
1.2 test result
The thermal conductivity (W/(m K) of material in the table 1 different test duration)
From table 1 data, it is 0.131W/(m K at the thermal conductivity of 3d that gained of the present invention has the lagging material of antiseepage effect), its value is less than the < 0.174W/(m K required by lagging material) standard, and the prolongation along with the time, thermal conductivity obviously reduces, this is because test specimen water content in early stage is higher, along with the prolongation water content of time reduces rapidly, tend towards stability to the decline of last thermal conductivity, reach Schwellenwert 0.046W/(m K), its value is far smaller than 0.174W/(m K). Its result shows that gained lagging material of the present invention has excellent thermal and insulating performance on the one hand, and water content decline also reflects from side that lagging material of the present invention has stronger resistance to compression, folding strength on the other hand.
2. barrier performance research
2.1 experiment materials and method
To get two diameters respectively be 20cm, post length is the synthetic glass post of 1m, is divided into experimental group and control group. Wherein experimental group uses gained lagging material of the present invention, and control group uses certain commercially available anti-seepage heat preservation material (purchase in Laiwu City Wan Tai engineering materials company limited), is filled in glass column bottom respectively, compacting. Then get the percolate that 50cm is high, after abundant vibration is mixed even, pours in glass column, open the valve below glass column, when percolate is flowed out from valve by impervious material, timing sampling, calculation permeability coefficient. Permeability coefficient is according to Darcy's law, and within regular hour t, the water yield Q passed through, is directly proportional in the infiltration area A in infiltration direction and the differential water pressures H of material both sides to material vertical, is inversely proportional to penetration distance (thickness of material) L. Calculation formula is as follows
WhereinThe water yield of material unit surface was oozed in the representation unit time;Represent the differential water pressures of material both sides and the ratio of material thickness.
2.2 experimental result
Permeability coefficient changes as shown in Figure 1.
As shown in Figure 1, experimental group and control group material are respectively 4.91 × 10 at experiment initial stage thermal conductivity-8Cm/s and 6.57 × 10-8Cm/s. Along with the prolongation of time, permeability coefficient declines all to some extent, and when 7d, two groups of permeability coefficients reach stable substantially, respectively 3.44 × 10-8Cm/s and 5.32 × 10-8About cm/s floats. This is owing to plugging the space of material along with the material in the prolongation percolate of time so that its permeability coefficient reduces gradually. Analysis design mothod data, the permeability coefficient of two groups of materials all reaches and considerably beyond minimum standard 1.00 × 10-8The requirement of cm/s, and its permeability coefficient of gained material of the present invention is less than control group, shows that gained of the present invention has the lagging material barrier performance of antiseepage effect excellent.
It should be appreciated that the embodiment more representational example that is the present invention, it is clear that the technical scheme of the present invention is not limited to above-described embodiment, it is also possible to have a lot of distortion. The those of ordinary skill of this area, with the present invention clear and definite disclosed or according to undoubted the obtaining of the written description of file, the claimed scope of this patent all should be thought.
Claims (10)
1. there is the lagging material of antiseepage effect, it is characterised in that, it is prepared from by following raw materials according, it is weight part: wilkinite 32-44, graphite 8-16, Vanadium Pentoxide in FLAKES 6-14, mica powder 5-9, sodium alginate 4-8, titanium dioxide 3-7, aluminium powder 1-5, polymeric amide 2-4.
2. there is the lagging material of antiseepage effect as claimed in claim 1, it is characterised in that, it is prepared from by following raw materials according, it is weight part: wilkinite 36-40, graphite 10-14, Vanadium Pentoxide in FLAKES 8-12, mica powder 6-8, sodium alginate 5-7, titanium dioxide 4-6, aluminium powder 2-4, polymeric amide 2.5-3.5.
3. there is the lagging material of antiseepage effect as claimed in claim 1, it is characterised in that, it is prepared from by following raw materials according, it is weight part: wilkinite 38, graphite 12, Vanadium Pentoxide in FLAKES 10, mica powder 7, sodium alginate 6, titanium dioxide 5, aluminium powder 3, kymene.
4. the preparation method of the lagging material with antiseepage effect as described in as arbitrary in claim 1-3, it is characterised in that, step is as follows:
(1) wilkinite, graphite, mica powder, titanium dioxide and aluminium powder mixing, it is placed in stirrer to be stirred to and mix, sieve, obtain mixing fine powders, clear water, polymeric amide and linking agent is added in mixing fine powders, continue to stir 30-50 minute (preferably continuing to stir 35-45 minute), obtained base-material, for subsequent use;
(2) sodium alginate and silicone resin are mixed, add clear water to be stirred to and just dissolve, then it is heated to 70-80 DEG C (being preferably heated to 73-77 DEG C), add Vanadium Pentoxide in FLAKES, hydrophober and dispersion agent, stir evenly by magnetic electric blender with 140r/min, gained solution is placed on 200-400 order stainless steel sift to filter (preferred gained solution is placed on 250-350 order stainless steel sift to filter), and gained filtered liquid is through vacuum outgas, for subsequent use;
(3) step (1) gained base-material is placed in mould, 15-25 minute it is incubated (at being preferable over 42-48 DEG C, being incubated 18-22 minute) at 40-50 DEG C, then step (2) gained filtered liquid is laid in base-material surface, after extrusion forming, it is warming up to 56-70 DEG C of pressurize 1-3 hour (being preferably warming up to 60-66 DEG C of pressurize 1.5-2.5 hour), then it is placed in constant temperature and humidity drying case curing molding, to obtain final product.
5. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterised in that, step (1) is crossed 140-170 order sieve (preferred 150-160 order of crossing sieves, mistake 155 order sieve more preferably).
6. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterized in that, in step (1), the amount of clear water is 0.7-1.5 times (doubly, the amount of clear water more preferably is 1.1 times of described bulk drug amount to the 0.9-1.3 that the amount of preferred clear water is described bulk drug amount) of described bulk drug amount.
7. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterized in that, the melamine resin (preferred described linking agent is massfraction is the melamine resin of 1.2-1.4%, and described linking agent more preferably is massfraction is the melamine resin of 1.3%) of to be massfraction the be 1.1-1.5% of linking agent described in step (1).
8. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterized in that, the silicone resin (preferred described hydrophober is massfraction is the silicone resin of 1.3-1.7%, and described hydrophober more preferably is massfraction is the silicone resin of 1.5%) of to be massfraction the be 1-2% of hydrophober described in step (2).
9. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterized in that, the Sodium hexametaphosphate 99 (preferred described dispersion agent is massfraction is the Sodium hexametaphosphate 99 of 1.2%-1.6%, and described dispersion agent more preferably is massfraction is the Sodium hexametaphosphate 99 of 1.4%) of to be massfraction the be 1.1%-1.7% of dispersion agent described in step (2).
10. the preparation method of the lagging material with antiseepage effect according to claim 4, it is characterized in that, in step (2), the time of vacuum outgas is 20-40 minute (time of preferred vacuum outgas is 25-35 minute, and the time of vacuum outgas more preferably is 30 minutes).
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| CN107336496A (en) * | 2017-06-26 | 2017-11-10 | 周小红 | Heat-preservation plastic pipeline |
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