CN101245189A - Straw, rice hull fibre base wood-plastic composite material and manufacture method thereof - Google Patents
Straw, rice hull fibre base wood-plastic composite material and manufacture method thereof Download PDFInfo
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- CN101245189A CN101245189A CNA2008100611809A CN200810061180A CN101245189A CN 101245189 A CN101245189 A CN 101245189A CN A2008100611809 A CNA2008100611809 A CN A2008100611809A CN 200810061180 A CN200810061180 A CN 200810061180A CN 101245189 A CN101245189 A CN 101245189A
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- straw
- plastic composite
- composite material
- rice hull
- wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a wood plastic composite material and a preparation method thereof, in particular to a straw, a rice husk fiber base wood plastic composite material and a preparation thereof. The straw and the rice husk fiber base wood plastic composite material comprise the following components according to weight percentage: melamine resin: 3.5 percent; the straw and the rice husk fiber or the mixture of the straw and the rice husk: 60 percent; polyethylene with low density: 32 percent; solubilizer: 2 percent and lubricant: 2.5 percent. The wood plastic composite type building material of the invention adopts high technology, and utilizes waste plastics and a large amount of straw (rice straw, rice husk) powder to mix and extrude various formed hollow sectional materials of wood plastic at high temperature by fiber strengthening, and the wood plastic composite material is a typical environmental-friendly material. The wood plastic composite material is characterized by sun block, waterproof, anti-moth, anti-freezing and anticorrosion, and the wood plastic composite material without formaldehyde is strong in wood sense, high in surface hardness, strong in wear resistance, good in antiaging, long in service life, easy in processing, is suitable for the preferable material of decoration indoors and outdoors, and is similar to wood in shape but better than wood in property.
Description
Technical field
The present invention relates to a kind of wood plastic composite and preparation method thereof, relate in particular to straw, rice hull fibre base wood-plastic composite material and preparation method thereof.
Background technology
Along with development of global economy, on the one hand, the use that various plastics are a large amount of, waste or used plastics rubbish spreads all over the world, and the environment of human living has been caused great pollution; On the other hand, a large amount of forests is cut down, and has caused the destruction of soil erosion and ecotope.How solving white pollution, saving the forest reserves is pendulum big problems in face of people.Wood fibre or vegetable fibre are filled the plastics that reclaim, through custom-built machine extrude, compacting or injection moulding, the goods of making can substitute timber-work, have both solved white pollution problems, have saved the forest reserves again, help the protection of ecotope.Therefore from environmental protection and economic angle, use the meaning and the prospect of wood fibre filling waste or used plastics more considerable.
Publication number provides a kind of by wood powder enhanced compound plastic plate for the Chinese patent application of CN1255427A.Be polypropylene, a small amount of polyethylene and wood powder, paper scrap and hotmelt melt blending are extruded or to be rolled and get.So-called hotmelt is the grafts of polypropylene and polar monomer (join as maleic acid etc.).The recovery plastics are not used in this patent application, and adding wood powder in plastics is in order to improve the intensity of plastic plate.Wherein the acquisition of hotmelt also needs graft process in advance, and preparation method and operating procedure are complicated, the cost height.
Publication number also provides similar a kind of matrix material by wood powder reinforced polypropylene for the Chinese patent application of CN1257890A.Also use polyacrylic grafts as wood powder and polyacrylic coupling agent.Add conventional processing aid in addition, be selected from polyethylene wax, chlorinatedpolyethylene, oxidic polyethylene, its chlorinated polypropylene, the clorafin one or more, to improve the flowability of wood powder.
Publication number provides the blend of a kind of wood fibre and waste or used plastics for the Chinese patent application of CN1204656A.Oligomer polymer overmold wood powder is used in this invention, improves the avidity of wood powder and waste or used plastics.The oligomer polymkeric substance is selected from ethene paraffin or Atactic Polypropelene or chlorinatedpolyethylene.
Publication number provides a kind of wood plastic composite and its production and application for the Chinese patent application of CN 1513918A.This matrix material includes components such as reclaiming plastics, wood fibre and resin compatible agent.Wherein the resin compatible agent is made up of EVA, vinylformic acid or vinylformic acid cruel polymkeric substance and chlorinatedpolyethylene mixing, can improve the consistency of plastics and wood fibre, and improve mechanical property; The ratio of weight and number of resin compatible agent and plastics is 2: 100～5: 100, and wood fibre is 100: 100～250: 100 with the ratio of weight and number that reclaims plastics.Prepare by common melt-mixing method in the plastic working by described component.This wood plastic composite is not only improving aspect intensity and the toughness greatly, and its forming process also is greatly improved, and has improved the production efficiency and the application prospect of wood plastic composite greatly.
Because straw, the surface of rice hull cellulose is a hydroxyl structure, it is the polarity hydrophilic substance, and plastics are non-hydrophilic substance, both affinity extreme differences, as simply with both blend, its product surface is coarse, mechanical property is very poor, even use maleic anhydride to connect the skill material as solubilizing agent, but effect is very poor always, key is the difference that wood is moulded two interface interactions, mould the bonded of interface dissolving between the two problem for solving wood, need be to straw, rice hull cellulose adds reinforcer, to its modification, enhancing wood is moulded two interfaces and is effectively dissolved combination, and processing contains the high Wood-plastic composite section bar of wood fibre.
Summary of the invention
For the affinity that solves above-mentioned wood fibre and LDPE and the technical problem of consistency.Reinforcement straw, the rice hull cellulose that an object of the present invention is to provide is intended to substitute fully wood fibre and good straw, the rice hull fibre base wood-plastic composite material of processing characteristics.Another object of the present invention provides above-mentioned straw, the preparation method of rice hull fibre base wood-plastic composite material.
In order to realize first above-mentioned technical purpose, the present invention has adopted following technical scheme:
Straw, rice hull fibre base wood-plastic composite material comprise following composition by weight percentage: melamine resin 3.5%; Straw, rice hull cellulose or both mixtures 60%; New LDPE (film grade) 32%; Solubilizing agent 2%; Lubricant 2.5%.
As preferably, above-mentioned lubricant comprises in cured one or both of dimethyl silicone oil, polyester.
As preferably, above-mentioned solubilizing agent is maleic anhydride, vinylformic acid, cinnamic multipolymer.
In order to realize second above-mentioned technical purpose, the present invention has adopted following technical scheme:
Above-mentioned straw, the preparation method of rice hull fibre base wood-plastic composite material comprise the steps:
(1) melamine resin and straw, rice hull cellulose high speed heat are mixed, dehydration obtains modification straw, rice hull cellulose;
(2) with above-mentioned modification straw, rice hull cellulose and the new LDPE (film grade), solubilizing agent, the mix lubricant that obtain, extruder grain;
(3) the particle extrusion molding that granulation is obtained, cooling, cutting;
(4) the surface galling shaping obtains finished product, and perhaps frosted polishing back is answered film blanching seal and obtained finished product.
As preferably, above-mentioned high speed heat is mixed and is adopted the awl twin screw extruder.The hot blended temperature of above-mentioned high speed is 185～200 ℃.
Straw of the present invention, rice hull cellulose melamine resin produces high temperature and disperses under the blade friction of homogenizer and finishes dehydration, intensive treatment, and mixed matchingization, it has strengthened the type condition, has prolonged the type course, has guaranteed the type quality.Its strengthening effect is as follows:
1, neutralization and the Evaporation that utilizes melamine resin to produce in solidification process removed the wood vinegar in straw, the rice hull cellulose fast, avoided the bubble type to become, and prevented the Wood-plastic composite section bar surface irregularity.
2, strengthen wood and moulded the effect of two interfaces dissolving bonded, made the effect of solubilizing agent more effective, increased substantially the physical and mechanical properties of Wood-plastic composite section bar.
3, improve the thermostability of wood fibre, made it to adapt to various processing of plastic temperature.
4, can control the increase of wood fibre water absorbability and water content effectively, reduce in the extrusion moulding process friction with machinery, die surface.
5, experimental results show that, straw, the rice hull cellulose content wooden basic PE wood plastic sectional composite material more than 60% is after adopting above-mentioned enhancements, moulding with the same proportioning wood that does not have intensive treatment is 1/3rd, and the dimensional stability and the coefficient of expansion only are 1/3rd, and other indexs also have notable difference.
Wood-plastic composite environment-friendly building materials of the present invention adopt new and high technology, utilize waste plastic and a large amount of stalk (straw, rice husk) pulvis, by the various hollow materials of the wooden-plastic of fiber strengthening high-temperature mixing and extrusion moulding, are a kind of typical environment-friendly materials.Have sun-proof, waterproof, mothproof, antifreeze, rot-resistant characteristics, woodiness touch is strong, the surface hardness height, and wear resistance is strong, resistance to deterioration is good, and long service life is easy to processing, not containing formaldehyde, is to be suitable for the indoor outer preferred material of decorating, and likeness in form timber is better than the performance of timber again.
Description of drawings
Fig. 1 is preparation method's artwork of straw of the present invention, rice hull fibre base wood-plastic composite material.
Embodiment
Embodiment 1
Straw, rice hull fibre base wood-plastic composite material material component by weight percentage:
Melamine resin 3.5% straw (rice husk) fiber 60%
New LDPE (film grade) 32% maleic anhydride, vinylformic acid, benzene second multipolymer 2%
Dimethyl silicone oil 2.5%;
As shown in Figure 1, the preparation method of above-mentioned straw, rice hull fibre base wood-plastic composite material is as follows:
(1) melamine resin and straw, rice hull cellulose are adopted the heat mixing at a high speed of awl twin screw extruder, the hot blended temperature of high speed is 200 ℃, and dehydration obtains modification straw, rice hull cellulose;
(2) with above-mentioned modification straw, rice hull cellulose and the new LDPE (film grade), solubilizing agent, the mix lubricant that obtain, extruder grain;
(3) the particle extrusion molding that granulation is obtained, cooling, cutting;
(4) frosted polishing back is answered film blanching seal and is obtained finished product.
Test example 1
The comparative data of the product that embodiment 1 is obtained and other common composition boards, glued board, MDF plate is as follows:
1.1 its performance relatively
| Performance | The wooden-plastic composite material | Common composition board, glued board, MDF |
| Water tolerance | Do not absorb, can be through exposing to the sun and rain | Poor water resistance, rapidly be out of shape rotten |
| Shape-holding property | High confining force | Yielding |
| Wearability | Do the floor and be the Korean pine wear resistance 7 times | Can not do the floor |
| Surface hardness | Hardness reaches 4H | Difference of hardness |
| Outdoor application | Waterproof, sun-proof, expansion and contraction is little | Begin to become rotten after 1 year |
| The erosion of termite moth | Can be by the erosion of termite moth | Still can be eaten into after the rotproofing |
| Pollution by Chemicals | Formaldehydeless, pollution-free | Raw material mixes, has pollution |
| Processing characteristics | Good processability | Poor processability |
| Specification | Desirable random length scale | In 2.44 meters of the maximum lengths |
1.2 the Main physical performance index of wood plastic composite
1.3 water-intake rate test
1.4 anti-sliding test
| Drying regime | 0.920(c.s.r.) |
| Moisture state | 0.552(c.s.r.) |
1.5 nail-holding ability test
| The rib part | 2100(N) |
| Hollow space | 1400(N) |
| MDF | 438(N) |
1.6 surface hardness test
| Adopt HB602 pencil delineation value | 4H |
| Wear-resisting decrement | 0.07/g |
。
Claims (6)
1. straw, rice hull fibre base wood-plastic composite material is characterized in that comprising by weight percentage following composition: melamine resin 3.5%; Straw, rice hull cellulose or both mixtures 60%; New LDPE (film grade) 32%; Solubilizing agent 2%; Lubricant 2.5%.
2. straw according to claim 1, rice hull fibre base wood-plastic composite material is characterized in that: lubricant comprises in cured one or both of dimethyl silicone oil, polyester.
3. straw according to claim 1, rice hull fibre base wood-plastic composite material is characterized in that: solubilizing agent is maleic anhydride, vinylformic acid, cinnamic multipolymer.
4. the preparation method of straw, rice hull fibre base wood-plastic composite material is characterized in that comprising the steps:
(1) melamine resin and straw, rice hull cellulose high speed heat are mixed, dehydration obtains modification straw, rice hull cellulose;
(2) with above-mentioned modification straw, rice hull cellulose and the new LDPE (film grade), solubilizing agent, the mix lubricant that obtain, extruder grain;
(3) the particle extrusion molding that granulation is obtained, cooling, cutting;
(4) the surface galling shaping obtains finished product, and perhaps frosted polishing back is answered film blanching seal and obtained finished product.
5. the preparation method of straw according to claim 4, rice hull fibre base wood-plastic composite material is characterized in that: heat is mixed employing awl twin screw extruder at a high speed.
6. the preparation method of straw according to claim 4, rice hull fibre base wood-plastic composite material is characterized in that: the hot blended temperature of high speed is 180～220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100611809A CN101245189A (en) | 2008-03-18 | 2008-03-18 | Straw, rice hull fibre base wood-plastic composite material and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100611809A CN101245189A (en) | 2008-03-18 | 2008-03-18 | Straw, rice hull fibre base wood-plastic composite material and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN101245189A true CN101245189A (en) | 2008-08-20 |
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| CNA2008100611809A Pending CN101245189A (en) | 2008-03-18 | 2008-03-18 | Straw, rice hull fibre base wood-plastic composite material and manufacture method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733808A (en) * | 2008-11-07 | 2010-06-16 | 北京环能海臣科技有限公司 | Straw section with waterproof skin compounded on surface |
| CN102492209A (en) * | 2011-12-19 | 2012-06-13 | 天津鼎升昊科技发展有限公司 | Formula for synthesizing wood-plastic composite plate by using waste and used PE (Polyethylene) cable sheathes and preparation method thereof |
| CN102558894A (en) * | 2012-02-21 | 2012-07-11 | 常熟市方塔涂料化工有限公司 | Method for preparing wood-like mould composite material |
| CN103242667A (en) * | 2013-05-17 | 2013-08-14 | 西双版纳华坤生物科技有限责任公司 | Rubber seed shell-based wood-plastic composite material and preparation method thereof |
| CN104073014A (en) * | 2014-06-30 | 2014-10-01 | 江苏旭华圣洛迪建材有限公司 | Raw material formula and preparation method of biomass-base plastic composite material |
| CN104974395A (en) * | 2014-04-11 | 2015-10-14 | 郭清松 | Environment-friendly building material and manufacturing method thereof |
| CN115160813A (en) * | 2022-07-29 | 2022-10-11 | 胡蕾蕾 | Preparation method of degradable wood-plastic composite material |
-
2008
- 2008-03-18 CN CNA2008100611809A patent/CN101245189A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733808A (en) * | 2008-11-07 | 2010-06-16 | 北京环能海臣科技有限公司 | Straw section with waterproof skin compounded on surface |
| CN101733808B (en) * | 2008-11-07 | 2014-11-26 | 北京环能海臣科技有限公司 | Straw section with waterproof skin compounded on surface |
| CN102492209A (en) * | 2011-12-19 | 2012-06-13 | 天津鼎升昊科技发展有限公司 | Formula for synthesizing wood-plastic composite plate by using waste and used PE (Polyethylene) cable sheathes and preparation method thereof |
| CN102558894A (en) * | 2012-02-21 | 2012-07-11 | 常熟市方塔涂料化工有限公司 | Method for preparing wood-like mould composite material |
| CN103242667A (en) * | 2013-05-17 | 2013-08-14 | 西双版纳华坤生物科技有限责任公司 | Rubber seed shell-based wood-plastic composite material and preparation method thereof |
| CN104974395A (en) * | 2014-04-11 | 2015-10-14 | 郭清松 | Environment-friendly building material and manufacturing method thereof |
| CN104073014A (en) * | 2014-06-30 | 2014-10-01 | 江苏旭华圣洛迪建材有限公司 | Raw material formula and preparation method of biomass-base plastic composite material |
| CN115160813A (en) * | 2022-07-29 | 2022-10-11 | 胡蕾蕾 | Preparation method of degradable wood-plastic composite material |
| CN115160813B (en) * | 2022-07-29 | 2024-05-14 | 徐军飞 | Preparation method of degradable wood-plastic composite material |
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Effective date of abandoning: 20080820 |
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