CN103992586B - Formula of PVC wood-plastic section material produced by utilizing agriculture and forestry three residues (logging residue, bucking residue and processing residue) and preparation technology thereof - Google Patents
Formula of PVC wood-plastic section material produced by utilizing agriculture and forestry three residues (logging residue, bucking residue and processing residue) and preparation technology thereof Download PDFInfo
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Abstract
The invention relates to a PVC wood-plastic section material and a preparation method thereof. Agriculture and forestry three residues comprise logging residue, bucking residue, processing residue, crop straws and the like and are researched, by utilizing the different physical and chemical properties, the agriculture and forestry three residues are proportioned and then are subjected to fusion mixing together with PVC plastic, so that the wood-plastic section material with excellent performances is prepared. Compared with the prior art, the agriculture and forestry three residues are fully utilized, processing and proportioning are performed based on the characteristics of the agriculture and forestry three residues, the filling density is large, the specific surface area is large, and the agriculture and forestry three residues are easy for fusion mixing with PVC, and are beneficial for resource saving and environment protection, and the prepared wood-plastic section material is good in physical properties; and the prepared wood-plastic section material is easy to process without being limited by processing length, is high in production efficiency and excellent in performances, and is 100% recyclable after being used for years.
Description
Technical field
The present invention relates to a kind of wood plastic composite, specifically, relate to and a kind ofly utilize agricultural three to remain obtained PVC wood plastic section bar of thing and preparation method thereof.
Background technology
Agricultural three remain owner and forest three will be divided into remain thing and agricultural wastes.Forest three remains owner and will refer to: logging residue (referring to branch, bifurcation, treetop, bark, leaf, tree root and rattan, shrub etc.); Producing material residuum (referring to producing material butt) and industrial wood waste (fingerboard skin, lath, wooden bamboo butt, saw foam, broken veneer, reel, wood shavings, wooden unit, tailing etc.).At present, logging residue and producing material residuum account for about 30% of Tree biomass, according to State Council approved 11th Five-Year during forest pathogen 21,500,000,000 m
3/ a, China will produce felling, the producing material residuum of about 11,100,000,000 tons every year, and industrial wood waste is also estimated to have up to 3,210 ten thousand m in addition
3annual production.Agricultural wastes mainly comprise agricultural crop straw, and it is as the by product of agriculture production, and output is large, distribution is wide, according to statistics annual about 8 ~ 1,000,000,000 tons of current China agricultural crop straw generation.
Although the utilization that current agricultural three remain thing has caused the attention of people, but worldwide developmental level is also uneven, the wood comprehensive utilization ratio of the developing countries such as China is only 50% ~ 60%, and the wood comprehensive utilization ratio of developed country reaches 80% ~ 90%.
Present stage, producing material residuum and industrial wood waste are mainly made various artificial board by utilization forest three being remained to thing, as fiberboard, shaving board, wood wool board, sawdust-board etc.
Wherein, fiberboard is the leftover bits such as slab, wood shavings, branch wood working got off, through broken, soak, grind to form wood pulp, then add certain sizing material, through artificial board that is hot-forming, drying treatment, be generally used as heat preserving and insulating material.
Shaving board, wood wool board, sawdust-board be respectively with the wood wool, wood chip etc. of wood shavings wood slag, scrap stock plane system for raw material, admix tackiness agent after drying, then through hot-forming and artificial board that is that make.Cakingagent used is synthetic resins, also can use the gelling material that cement, magnesia etc. are inorganic.The general apparent density of this kind of sheet material is less, and intensity is lower, main as adiabatic and sound-absorbing material.
But above-mentioned wood-based plate mainly adopts the waste material of producing material, other wastes of forest are not fully utilized, and have employed a large amount of tackiness agent, cause the high Form aldehyde release of the waste of timber and wood-based plate, do not meet the environmental requirement that people improve day by day, therefore in the urgent need to a kind of there is energy-conservation, low cost, be easy to the novel material of construction arranged.
Wood plastic composite utilizes Plant Powder and thermoplastics to be main raw material, after adding a certain amount of additive, and a kind of advanced composite material formed after mixing and forcing machine processing.This material can reduce oil consumption, and the agricultural three that a large amount of use is discarded simultaneously remain thing, can alleviate the consumption of modern society to petroleum resources, can reduce again the consumption of timber resources, is protection of the environment and the effective means reducing energy consumption.Wood plastic composite, compared with timber, has durable, little, the corrosion resistant advantage of good stability of the dimension, easy-formation, water-absorbent; There is the feature that cost is low, rigidity is high compared with plastics.And the Study and Development of wood plastic composite contributes to " white pollution " that reduce plastics, also contribute to alleviating the impact that agriculture and forestry organic waste material brings environment, and make full use of the natural resources and plastic film, the aspects such as agricultural, packaging, family daily necessity can be widely used in.
At present, Wood-plastic material Plant Powder used comprises wood dust, shell powder, bamboo powder, straw powder, litter shell powder, other farm crop or plant stem-leaf powder etc., its source is very wide and cheap, make full use of these materials inherently Environment control beautify the environment a kind of approach.
Based on the demand, the present invention proposes a kind ofly to fully utilize agricultural three and remain Wood-plastic profiles prepared by thing and provide its preparation method.
Summary of the invention
The object of this invention is to provide a kind of PVC wood plastic section bar and preparation method thereof utilizing agricultural three to remain thing to produce.
The present invention have studied various agricultural three and remains thing, comprise logging residue (branch, treetop, bark, leaf, tree root and rattan, shrub etc.), producing material residuum (referring to producing material butt) and industrial wood waste (fingerboard skin, sheet material, wooden bamboo butt, saw foam, broken veneer, reel, wood shavings, wooden unit, tailing) and agricultural crop straw etc., by the physics and chemistry character that they are different, by its proportioning, subsequently with PVC plastic melting mixing, prepare the Wood-plastic material section bar of excellent property.
PVC wood plastic section bar of the present invention, the weight proportion of its raw material is:
PVC resin powder: 100 parts;
Plant fiber powder: 20 ~ 40 parts;
Calcareous weighting agent: 30 ~ 50 parts;
Stablizer: 2 ~ 5 parts;
PE wax: 0.9 ~ 1.1 part;
Stearic acid: 0.7 ~ 0.9 part;
Foaming control agent: 5 ~ 8 parts;
Whipping agent: 0.5 ~ 1.5 part;
Wherein, described plant fiber powder remains thing by agricultural three and produces, and agricultural three is remained thing and is divided into four classes: 1) branch, treetop, bark, leaf; 2) tree root, shrub and rattan; 3) producing material residuum (referring to producing material butt) and industrial wood waste; 4) stalk.The Mierocrystalline cellulose of different types of three surplus things, the content of hemicellulose and xylogen all has larger difference, and the content range (mass percent) of its each component is (generally also containing other a small amount of materials, generally can be described as ash content):
(1) branch, treetop, bark, leaf: Mierocrystalline cellulose is more than or equal to 90%; The content of hemicellulose and xylogen is lower;
(2) tree root, shrub and rattan: Mierocrystalline cellulose 44%-55%; Hemicellulose 20%-25%; Xylogen: 20%-25%;
(3) producing material residuum (referring to producing material butt) and industrial wood waste: Mierocrystalline cellulose 40%-50%; Hemicellulose 20%-25%; Xylogen: 15%-35%;
(4) stalk: Mierocrystalline cellulose 18%-20%; Hemicellulose 20%30%; Xylogen: 50%-62%.
Wherein, the composition of (2) and (3) class is close, and the form of xylogen is better, can preferably and PVC melting mixing; But (4) although the content of lignin of class is very high, comparatively (2) and (3) class is poor, not easily with PVC melting mixing for form.The macromolecular polysaccharide that Mierocrystalline cellulose is made up of glucose, hemicellulose is the heteromultimer that monose is formed, xylogen is the aromaticity superpolymer having oxo phenylpropyl alcohol or derivatives thereof structural unit, the wetting ability of xylogen, water-absorbent and swollen degree are all less than hemicellulose and Mierocrystalline cellulose, more easily and PVC melting mixing shaping.
Therefore, above-mentioned four class materials are made wood fiber powder by the present invention respectively; Then by following weight proportion carry out with the use of: 1-2: 2-3.5: 2-5:2-5.
Preferably, described agricultural three remain the weight proportion of the various types of materials of thing is 1-2: 2-3: 4-5:2-3.
The content of lignin of plant fiber powder adopting said ratio to prepare is higher, and form is also better, and the content of Mierocrystalline cellulose and hemicellulose is moderate, can preferably with PVC melting mixing.For ensureing the intensity of the Wood-plastic material obtained, according to the feature of above-mentioned vegetable fibre, different forms and particle diameter can also be processed into, make it have larger specific surface area, during mixing, also can reach larger tamped density.
Preferably, (1) branch, treetop, bark, leaf are treated to platy shaped particle, the major diameter of particle and Thickness Ratio are 3-5:1; Median size is 10-1000 μm;
By (2) tree root, shrub and rattan are treated to subsphaeroidal particle, Ratio of long radius to short radius 1:1.05-1.1; Median size is 10-100 μm;
(3) producing material residuum and industrial wood waste are also treated to subsphaeroidal particle, Ratio of long radius to short radius 1:1.05-1.1; Median size is 50-500 μm;
(4) stalk is treated to platy shaped particle, and the major diameter of particle and Thickness Ratio are 5-10:1; Median size is 10-100 μm.
In addition, wherein PVC resin powder PVC resin powder that this area can be selected conventional.
Described calcareous weighting agent can select calcium carbonate.In Wood-plastic material, add appropriate weighting agent, can make it have good feel, light face is dry and do not show light, and resistance to hot pressing is high, and permanentset is little.Preferred light calcium carbonate powder or slight activated calcium carbonate.The calcium carbonate of described light calcium carbonate to be settling volume be 2.4-2.8mL/g, generally that the raw material calcinings such as Wingdale are generated lime (main component is calcium oxide) and carbonic acid gas, the digestion lime that adds water again generates milk of lime (main component is calcium hydroxide), and then pass into carbonic acid gas carbonization milk of lime generation precipitation of calcium carbonate, obtain finally by dehydration, drying and pulverizing; Or first carry out replacement(metathesis)reaction generation precipitation of calcium carbonate with sodium carbonate and calcium chloride, then obtain through dehydration, drying and pulverizing.The granularity of described light calcium carbonate is 2-1000nm; Preferred size is the ultramicrofine light calcium carbonate of 2-50nm.Described activated calcium carbonate is light calcium carbonate powder prepared by improving technique condition, can select activated calcium carbonate product common on market, as the calcium powder that Jingxing, Shijiazhuang calcium carbonate factory produces.
PVC at high temperature processes, and very easily releases HCL, forms unstable polyene structure.Meanwhile, HCL has self-catalysis, and PVC can be made to degrade further.In addition, if aerobic exists or has iron, aluminium, zinc, tin, copper and cadmium plasma to exist, all to degrade katalysis to PVC, accelerate that it is aging.Therefore will there is various bad phenomenon in plastics, as variable color, distortion, be full of cracks, physical strength decline, electrical insulation capability decline, embrittlement etc.In order to address these problems, must add stablizer in formula, especially thermo-stabilizer is essential especially.The stablizer of PVC comprises thermo-stabilizer, oxidation inhibitor, UV light absorber and sequestrant.Require to select different varieties, the stablizer of different quantities according to goods service requirements and complete processing during formulating of recipe.In the present invention, described stablizer is calcium zinc series stablizer or rare earth class stablizer, can adopt the aforementioned stable agent that this area is commercial, as the CZX series nontoxic calcium zinc stablizer etc. of Sen Deli additives for plastics company limited of Shenzhen; The excellent machining performance of rare-earth stabilizer, can select the dustless rare earth complex heat stabilizer of PVC that Jinchang, Jinan produces along Chemical Co., Ltd..
PE wax and polyethylene wax, molecular weight is generally 1500 ~ 50000, does not on average surpass 10000, is wax-like resin.Outward appearance is white or yellow small-particle.Polyethylene wax thermostability, chemical stability and electrical property are all fine, and melt viscosity and hardness, all close to paraffin, have stronger internal lubrication effect.
Stearic acid is also a kind of conventional lubricant, and it can serve as external lubricant, mainly through mixing with wood powder, covers wood powder surface equably, thus improves its bonding with polymeric matrix.The stearic acid that described stearic acid selects this area conventional.
Foaming control agent is polyacrylate(s) foaming control agent, can select the type that this area is conventional, if model is the foaming control agent of ZB-530.
Described whipping agent is azo amides heat release type whipping agent, as the Cellmic C 121 that this area is conventional.
Preferably, the weight proportion of the raw material of described PVC wood plastic section bar is:
PVC resin powder: 100 parts;
Plant fiber powder: 30 ~ 40 parts;
Calcareous weighting agent: 30 ~ 35 parts;
Stablizer: 4 ~ 5 parts;
PE wax: 0.9 ~ 1.1 part;
Stearic acid: 0.7 ~ 0.9 part;
Foaming control agent: 5 ~ 6 parts;
Whipping agent: 1 ~ 1.5 part.
Present invention also offers a kind of preparation method utilizing agricultural three to remain the PVC wood plastic section bar that thing is produced, comprise the steps:
1) plant fiber powder is added the mixing of stir mixing machine, described plant fiber powder comprises (1) branch, treetop, bark, leaf; (2) tree root, shrub and rattan; (3) producing material residuum and industrial wood waste; (4) stalk, its weight proportion is: 1-2: 2-3.5: 2-5:2-5;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 60 ~ 80 DEG C, by plant fiber powder Homogeneous phase mixing with it, then PVC resin powder is added, stablizer, foaming control agent and whipping agent, be heated to 130 ~ 150 DEG C, then be cooled to 70 ~ 80 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 140 ~ 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
The length of section bar, width, thickness can be determined arbitrarily according to customer requirement.
Wherein, step 1) in, described weight proportion is preferably 1-2: 2-3: 4-5:2-3.
Described calcareous weighting agent can select calcium carbonate.In Wood-plastic material, add appropriate weighting agent, can make it have good feel, light face is dry and do not show light, and resistance to hot pressing is high, and permanentset is little.Preferred light calcium carbonate powder or slight activated calcium carbonate.The calcium carbonate of described light calcium carbonate to be settling volume be 2.4-2.8mL/g, generally that the raw material calcinings such as Wingdale are generated lime (main component is calcium oxide) and carbonic acid gas, the digestion lime that adds water again generates milk of lime (main component is calcium hydroxide), and then pass into carbonic acid gas carbonization milk of lime generation precipitation of calcium carbonate, obtain finally by dehydration, drying and pulverizing; Or first carry out replacement(metathesis)reaction generation precipitation of calcium carbonate with sodium carbonate and calcium chloride, then obtain through dehydration, drying and pulverizing.The granularity of described light calcium carbonate is 2-1000nm; Preferred size is the ultramicrofine light calcium carbonate of 2-50nm.Described activated calcium carbonate is light calcium carbonate powder prepared by improving technique condition, can select activated calcium carbonate product common on market, as the calcium powder that Jingxing, Shijiazhuang calcium carbonate factory produces.
PVC at high temperature processes, and very easily releases HCL, forms unstable polyene structure.Meanwhile, HCL has self-catalysis, and PVC can be made to degrade further.In addition, if aerobic exists or has iron, aluminium, zinc, tin, copper and cadmium plasma to exist, all to degrade katalysis to PVC, accelerate that it is aging.Therefore will there is various bad phenomenon in plastics, as variable color, distortion, be full of cracks, physical strength decline, electrical insulation capability decline, embrittlement etc.In order to address these problems, must add stablizer in formula, especially thermo-stabilizer is essential especially.The stablizer of PVC comprises thermo-stabilizer, oxidation inhibitor, UV light absorber and sequestrant.Require to select different varieties, the stablizer of different quantities according to goods service requirements and complete processing during formulating of recipe.In the present invention, described stablizer is calcium zinc series stablizer or rare earth class stablizer, can adopt the aforementioned stable agent that this area is commercial, as the CZX series nontoxic calcium zinc stablizer etc. of Sen Deli additives for plastics company limited of Shenzhen; The excellent machining performance of rare-earth stabilizer, can select the dustless rare earth complex heat stabilizer of PVC that Jinchang, Jinan produces along Chemical Co., Ltd..
PE wax and polyethylene wax, molecular weight is generally 1500 ~ 50000, does not on average surpass 10000, is wax-like resin.Outward appearance is white or yellow small-particle.Polyethylene wax thermostability, chemical stability and electrical property are all fine, and melt viscosity and hardness, all close to paraffin, have stronger internal lubrication effect.
Stearic acid is also a kind of conventional lubricant, and it can serve as external lubricant, mainly through mixing with wood powder, covers wood powder surface equably, thus improves its bonding with polymeric matrix.The stearic acid that described stearic acid selects this area conventional.
Foaming control agent is polyacrylate(s) foaming control agent, can select the type that this area is conventional, if model is the foaming control agent of ZB-530; As the ACR foaming control agent that Shandong Rui Feng polymer company limited produces.
Described whipping agent is azo amides heat release type whipping agent, as the Cellmic C 121 that this area is conventional.
Wood-plastic profiles tool of the present invention has the following advantages:
1) the present invention can make full use of agricultural three and remain thing, and carries out processing and proportioning according to the feature of various three surplus things, and tamped density is large, specific surface area is large, and easy and PVC melting mixing, is conducive to economizing on resources, protection of the environment, the good physical performance of the Wood-plastic profiles of preparation;
2) Wood-plastic profiles of the present invention, be easy to processing, its processing length is unrestricted, and production efficiency is high, excellent property (zero formaldehyde, waterproof, protection against the tide, mildew-resistant, mothproof); In the future the desired decoration material replacing common density board, multi-layered board, after using the several years, can 100% recycling;
3) Wood-plastic profiles of the present invention, its production technique is simple, easy handling, good stability, is easy to processing.
Embodiment
Following examples only for illustration of the present invention, but are not used for limiting invention scope of the present invention.The technician in this field can make some nonessential improvement and adjustment according to the content of foregoing invention to the present invention.
If no special instructions, the method adopted is the method that this area is commonly used.The equipment that the present embodiment adopts this area conventional.Wherein the title of each raw material that embodiment 1-4 is used and manufacturer are as shown in Table 1 and Table 2:
The raw material of table 1 embodiment 1-4 and producer
Wherein, the polyethylene wax of Jiangyin Hong Sheng additives for plastics factory selected by PE wax.
The plant fiber powder material composition of table 2 embodiment 1-4
Embodiment 1
Raw material is taken according to following weight proportion:
PVC resin powder: 100 parts;
Plant fiber powder: 30 parts; Calcareous weighting agent: 30 parts; Stablizer: 5 parts; PE wax: 0.9 part; Stearic acid: 0.7 part; Foaming control agent: 5 parts; Whipping agent: 1 part.
Then following methods is utilized to prepare wood plastic building mould:
1) plant fiber powder is added the mixing of stir mixing machine, weight proportion and the size-grade distribution of described plant fiber powder are shown in Table 2;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 80 DEG C, by plant fiber powder Homogeneous phase mixing with it, then add PVC resin powder, stablizer, foaming control agent and whipping agent, be heated to 150 DEG C, then be cooled to 80 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar, section bar specification 130mmx77mm column.
Embodiment 2
Raw material is taken according to following weight proportion:
PVC resin powder: 100 parts;
Plant fiber powder: 40 parts;
Calcareous weighting agent: 35 parts;
Stablizer: 5 parts;
PE wax: 0.9 part;
Stearic acid: 0.9 part;
Foaming control agent: 6 parts;
Whipping agent: 1.5 parts.
Then following methods is utilized to prepare wood plastic building mould:
1) plant fiber powder is added the mixing of stir mixing machine, weight proportion and the size-grade distribution of described plant fiber powder are shown in Table 2;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 60 DEG C, by plant fiber powder Homogeneous phase mixing with it, then add PVC resin powder, stablizer, foaming control agent and whipping agent, be heated to 150 DEG C, then be cooled to 70 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 140 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar, section bar specification 130mmx77mm column.
Embodiment 3
Raw material is taken according to following weight proportion:
PVC resin powder: 100 parts;
Plant fiber powder: 40 parts;
Calcareous weighting agent: 30 parts;
Stablizer: 4 parts;
PE wax: 1 part;
Stearic acid: 0.8 part;
Foaming control agent: 5 parts;
Whipping agent: 1.2 parts.
Then following methods is utilized to prepare wood plastic building mould:
1) plant fiber powder is added the mixing of stir mixing machine, weight proportion and the size-grade distribution of described plant fiber powder are shown in Table 2;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 70 DEG C, by plant fiber powder Homogeneous phase mixing with it, then add PVC resin powder, stablizer, foaming control agent and whipping agent, be heated to 150 DEG C, then be cooled to 75 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 160 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar, section bar specification 130mmx77mm column.
Embodiment 4
Raw material is taken according to following weight proportion:
PVC resin powder: 100 parts;
Plant fiber powder: 20 parts;
Calcareous weighting agent: 45 parts;
Stablizer: 2 parts;
PE wax: 1.1 parts;
Stearic acid: 0.7 part;
Foaming control agent: 8 parts;
Whipping agent: 0.5 part.
Then following methods is utilized to prepare wood plastic building mould:
1) plant fiber powder is added the mixing of stir mixing machine, weight proportion and the size-grade distribution of described plant fiber powder are shown in Table 2;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 80 DEG C, by plant fiber powder Homogeneous phase mixing with it, then add PVC resin powder, stablizer, foaming control agent and whipping agent, be heated to 140 DEG C, then be cooled to 80 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar, section bar specification 130mmx77mm column.
Product performance prepared by embodiment 1-4 are as shown in table 3:
The performance of table 3 Wood-plastic profiles
Obviously, compared with wood plastic composite of the prior art, the intensity of Wood-plastic material building template of the present invention is high, toughness large, and production efficiency is high, after using the several years, and can 100% recycling.
Claims (8)
1. a PVC wood plastic section bar, is characterized in that, the weight proportion of its raw material is:
PVC resin powder: 100 parts;
Plant fiber powder: 30 ~ 40 parts;
Calcareous weighting agent: 30 ~ 35 parts;
Stablizer: 4 ~ 5 parts;
PE wax: 0.9 ~ 1.1 part;
Stearic acid: 0.7 ~ 0.9 part;
Foaming control agent: 5 ~ 6 parts;
Whipping agent: 1 ~ 1.5 part; Wherein, described plant fiber powder comprises: 1) branch, treetop, bark, leaf; 2) tree root, shrub and rattan; 3) producing material residuum and industrial wood waste; 4) stalk, its by following weight proportion carry out with the use of: 1-2: 2-3.5: 2-5:2-5;
Described calcareous weighting agent is light calcium carbonate powder or slight activated calcium carbonate;
Described stablizer is calcium zinc series stablizer;
Foaming control agent is polyacrylate(s) foaming control agent;
Described whipping agent is azo amides heat release type whipping agent.
2. Wood-plastic profiles as claimed in claim 1, it is characterized in that, described agricultural three remain thing: 1) branch, treetop, bark, leaf; 2) tree root, shrub and rattan; 3) producing material residuum and industrial wood waste; 4) weight proportion of stalk is 1-2: 2-3: 4-5:2-3.
3. Wood-plastic profiles as claimed in claim 1 or 2, it is characterized in that, described (1) branch, treetop, bark, leaf are platy shaped particle, and the major diameter of particle and Thickness Ratio are 3-5:1; Median size is 10-1000 μm.
4. Wood-plastic profiles as claimed in claim 1 or 2, it is characterized in that, described (2) tree root, shrub and rattan are subsphaeroidal particle, Ratio of long radius to short radius 1:1.05-1.1; Median size is 10-100 μm.
5. Wood-plastic profiles as claimed in claim 1 or 2, it is characterized in that, described (3) producing material residuum and industrial wood waste are subsphaeroidal particle, Ratio of long radius to short radius 1:1.05-1.1; Median size is 50-500 μm.
6. Wood-plastic profiles as claimed in claim 1 or 2, it is characterized in that, described (4) stalk is platy shaped particle, and the major diameter of particle and Thickness Ratio are 5-10:1; Median size is 10-100 μm.
7. a preparation method for the Wood-plastic profiles as described in claim 1-6 any one, is characterized in that, comprises the steps:
1) plant fiber powder is added the mixing of stir mixing machine, described plant fiber powder comprises (1) branch, treetop, bark, leaf; (2) tree root, shrub and rattan; (3) producing material residuum and industrial wood waste; (4) stalk, its weight proportion is: 1-2: 2-3.5: 2-5:2-5;
2) then add calcareous weighting agent, PE wax and stearic acid, be heated to 60 ~ 80 DEG C, by plant fiber powder Homogeneous phase mixing with it, then PVC resin powder is added, stablizer, foaming control agent and whipping agent, be heated to 130 ~ 150 DEG C, then be cooled to 70 ~ 80 DEG C of releasings;
3) raw material mixed is added forcing machine, be heated to 140 ~ 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
8. preparation method as claimed in claim 7, is characterized in that, step 1) in, described weight proportion is 1-2: 2-3: 4-5:2-3.
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| CN108948562A (en) * | 2017-05-18 | 2018-12-07 | 济宁明升新材料有限公司 | A kind of lignin/PVC decorative diaphragm and preparation method thereof |
| CN108948559A (en) * | 2017-05-18 | 2018-12-07 | 济宁明升新材料有限公司 | A kind of lignin/PVC film and preparation method thereof |
| CN107163609A (en) * | 2017-05-24 | 2017-09-15 | 丁妙严 | Chaff shell/PVC composites |
| CN107474430A (en) * | 2017-08-16 | 2017-12-15 | 山东霞光实业有限公司 | A kind of PVC Modified wood plastic section bars of door and window and preparation method thereof |
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| CN101613509B (en) * | 2009-06-03 | 2014-06-04 | 石河子市森力新材料科技有限公司 | PVC foaming wood plastic composite material |
| CN101955614B (en) * | 2010-02-22 | 2012-09-05 | 成都奥金希斯科技股份有限公司 | Novel wood plastic composite decorative building material and manufacturing method thereof |
| CN101864130B (en) * | 2010-07-26 | 2011-09-07 | 南京皇家聚锋建筑材料有限公司 | PVC plastic-wood material |
| CN102108168A (en) * | 2010-12-24 | 2011-06-29 | 上海国成塑料有限公司 | Preparation method of polyvinyl chloride (PVC) foamed wood-plastic window sectional material |
| CN102304290A (en) * | 2011-07-26 | 2012-01-04 | 北京林业大学 | Wood plastic composite and preparation method thereof |
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2014
- 2014-04-30 CN CN201410180155.8A patent/CN103992586B/en active Active
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