阅读说明：本技术 一种耐温变木塑板及其制备方法 (A kind of temperature variation resistant wood-plastic board and preparation method thereof ) 是由 孟鹏祖 郑金林 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种耐温变木塑板及其制备方法,涉及木塑板的技术领域,所述耐温变木塑板的原料包括以下重量百分比的组分：塑料粉粒20～60%、植物纤维20～70%、耐温变剂0.1～0.3%、其他助剂0.2～0.5%、填充剂5～10%。本发明的制备方法具有降低木塑板在低温下的变硬优点。(The invention discloses a kind of temperature variation resistant wood-plastic boards and preparation method thereof, it is related to the technical field of wood-plastic board, the raw material of the temperature variation resistant wood-plastic board includes following components in percentage by weight: plastic powder particle 20~60%, plant fiber 20~70%, temperature variation resistant agent 0.1~0.3%, other auxiliary agents 0.2~0.5%, filler 5~10%.Preparation method of the invention has the advantages that reduce wood-plastic board being hardened at low temperature.)

1. a kind of temperature variation resistant wood-plastic board, it is characterised in that: the raw material of the temperature variation resistant wood-plastic board includes following weight percent Component:

2. a kind of temperature variation resistant wood-plastic board according to claim 1, it is characterised in that: the plastic powder particle includes weight ratio For (2~3): 1 component A and component B, component A be selected from one of polyethylene, polypropylene, polyvinyl chloride and its copolymer or A variety of, component B includes that weight percent is 10~25% 2-phenylindone, 10~30% magnesium stearate, 10~25% 5- methyl -2-phenylindone and 20~30% silicone powder.

3. a kind of temperature variation resistant wood-plastic board according to claim 1, it is characterised in that: the temperature variation resistant agent includes following weight The component of percentage:

4. a kind of temperature variation resistant wood-plastic board according to claim 1, it is characterised in that: the filler includes following parts by weight Several components:

5. a kind of temperature variation resistant wood-plastic board according to claim 1, it is characterised in that: other described auxiliary agents include following weight The component of percentage:

6. a kind of temperature variation resistant wood-plastic board according to claim 5, it is characterised in that: the lubricant includes following weight hundred Divide the component of ratio:

7. a kind of fade-proof wood-plastic clad plate according to claim 5, it is characterised in that: the foaming agent includes following heavy Measure the component of percentage:

Azodicarbonamide 20~60%；

Sodium bicarbonate 10~30%；

2- ethyl acetic acid zinc 10~30%.

8. a kind of a kind of preparation method of temperature variation resistant wood-plastic board described in claim 1, it is characterised in that: the following steps are included:

S1: the raw material for being used to make fade-proof wood-plastic clad plate is taken out in proportion out of feed bin；

S2: adding raw materials into blender and be stirred, and is then delivered in mixing screw by conveying equipment and heats mixing, According still further to mold extrusion forming；

S3: wood-plastic board after molding is sent into drying machine and carries out wind cold drying；

S4: the storage of piler stacking is sent into after the wood-plastic board after drying is carried out accurate trimming with bead cutter.

Technical field

The present invention relates to the technical fields of wood-plastic board, more particularly, to a kind of temperature variation resistant wood-plastic board and preparation method thereof.

Background technique

Wood plastic composite is using composite wood made of wood fibre and thermoplastics processing, and raw material can be useless The biomass fibers such as old timber, agricultural crop straw, bamboo wood, hards, the thermoplasticity such as polyethylene, polypropylene, the polyvinyl chloride of recycling Plastics provide good approach for the regeneration of waste.Prepared wood plastic composite has water-fast, anti-simultaneously The advantages of rotten, dimensionally stable and formaldehydeless release, production process and use process all have the feature of environmental protection.Floor, building outdoors Hanging plate, garden landscape building, Furniture manufacture, interior decoration etc., which have, to be widely applied.

Existing wood moulding board production technology mainly includes ingredient, defibrator process molding plus glue and drying and other steps.The life of wood-plastic board It produces raw material and generally includes plastic substrate, plant powder and other auxiliary agents, wherein plastic substrate mainly includes polyethylene, poly- third Alkene, polyvinyl chloride and its copolymer etc. generally include lignose and plant cellulose etc. in plant powder, other auxiliary agents are logical Often addition foaming agent, coupling agent, toughener etc..

Prior art among the above has the following deficiencies: the wood-plastic board of the prior art production environment extremely low in temperature In in use, in the case where extremely low temperature, the hardness of wood-plastic board can become very high due to containing plastic components in wood-plastic board, make Wood-plastic board is obtained to be not easy to carry out punching installation.

Summary of the invention

In view of the deficiencies of the prior art, the present invention intends to provide a kind of temperature variation resistant wood-plastic board and its preparation side Method, by adding the auxiliary agents such as temperature variation resistant agent and filler in the raw material of wood-plastic board, so that wood-plastic board is not variable at low temperature Firmly.

Above-mentioned purpose of the invention has the technical scheme that

The raw material of a kind of temperature variation resistant wood-plastic board, the temperature variation resistant wood-plastic board includes following components in percentage by weight:

By using above-mentioned technical proposal, the freezing tolerance of wood-plastic board is can be improved in temperature variation resistant agent, is alleviated in wood-plastic board The characteristic that plastics are hardened in extremely cold environment, so that wood-plastic board can be kept when in the extremely low adverse circumstances of wood moulding plate temperature Original performance advantage, while can be convenient the installation of the punching in wood-plastic board, improve the use scope of wood-plastic board.Plastic powder particle and Plant fiber is the main component of wood-plastic clad plate, and in heating mixing process, plastics softening is mutual with plant fiber at liquid It is uniformly mixed, then cooling obtains finished product wood-plastic clad plate.Plastic powder particle improves finished product wood-plastic clad plate for moist more water The resistance of environment is better able to adapt to moist environment compared with pure wood-based product, and expanding classical wood millwork cannot apply Scene domain.And by the plastic powder particle of addition, for wood-plastic clad plate insect prevention, it is termite-proof and other effects be improved, The harassing and wrecking that insects can effectively be avoided, improve the service life of wood-plastic clad plate.Other than main component, other auxiliary agents are mainly used In the mixing effect for improving other kinds mechanical property and raising wood-plastic clad plate of the wood-plastic clad plate in production production process Fruit.

The present invention is further arranged to: the plastic powder particle includes that weight ratio is (2~3): 1 component A and component B, Component A is selected from one of polyethylene, polypropylene, polyvinyl chloride and its copolymer or a variety of, and component B includes that weight percent is 10~25% 2-phenylindone, 10~30% magnesium stearate, 10~25% 5- methyl -2-phenylindone and 20~ 30% silicone powder.

By using above-mentioned technical proposal, component A is main plastic components in plastic powder particle, and polyethylene, gathers polypropylene Benezene material is free of in vinyl chloride and its copolymer, it is nuisanceless, it can be recycled, greatly save the usage amount of timber.In component B The thermal stability of wood-plastic board after improving wood plastics composite sheet metal forming is added in 2-phenylindone and 5- methyl -2-phenylindone, stearic Sour magnesium is a kind of excellent lubrication stably dispersing auxiliary agent, and for wood-plastic clad plate during hot briquetting, magnesium stearate can be to modeling Material ingredient plays the effect of stable lubricating uniform dispersion.The wearability of wood-plastic clad plate can be improved in the addition of silicone powder, and It has close inorganic group and organic-philic group, can improve interfacial property for the filler added in wood-plastic clad plate, mention Compatibility between high filler and plastics.

The present invention is further arranged to: the temperature variation resistant agent includes following components in percentage by weight:

By using above-mentioned technical proposal, butyl stearate, dioctyl sebacate and diisononyl phthalate are all For improving the plasticity of plastics, reduce the plasticizer of the crystal region in plastics high molecular polymer segment, plasticizer molecule injects To the stress between polymer molecular chain, weakened between polymer molecular chain, increase the mobility of polymer molecular chain, reduces The crystallinity of polymer molecular chain, so that the moulding of polymer increases.And dioctyl sebacate has better cold resistance, is heated Change colour small, volatility is low, and water-extraction resistance is good, so that the low-temperature pliability and excellent durability of product.Phthalic acid two is different The molecular weight of nonyl ester is bigger, and carbochain is longer, possesses better ageing-resistant performance, ability of resisting to migration, anti-extractibility energy, preferably resistance to High-temperature behavior is first still able to maintain the moulding of plastics in high temperature.In addition to plasticizer, magnesium stearate between polymer segment for providing Better lubricant effect, so that the moulding of high molecular polymer is more preferable.Lauryl sodium sulfate is right as a kind of surfactant Dispersion effect of each component in plastics macromolecule in temperature variation resistant agent is more preferable.

The present invention is further arranged to: the filler includes the component of following parts by weight:

By using above-mentioned technical proposal, floating bead is a kind of fly ash hollow ball that can be bubbled through the water column, and wall is thin hollow, matter Gently.Since the particle diameter distribution of floating bead is wider, the small floating bead of partial size be can be inserted between the big floating bead of partial size, so that between floating bead Be distributed it is even closer, and floating bead surface-closed and it is smooth, mutual lubricity is preferable, and wood moulding can be improved as filler Lubricity in plate in plastic components between polymer molecule reduces at low temperature due to the lubricity drop between polymer molecule It is low and a possibility that be hardened.Copper fiber has lesser ruler diameter, while metallic copper has preferable thermal conductivity, can balance wood moulding Temperature between intralamellar part.The wearability of wood-plastic board can be improved in polytetrafluoroethylene (PTFE), while it also has certain lubricating action. The particle of nano silica is superfine, and has chemical inertness, can largely improve the mobility of polymer and resistance to The characteristics such as mill property.

The present invention is further arranged to: other described auxiliary agents include following components in percentage by weight:

Plasticizer is added by using above-mentioned technical proposal, in raw material to be used to increase addition and the plastics in wood-plastic clad plate Plasticity, initiator promote plastic powder in different monomers between couple, produce copolymer, improve the degree of polymerization, raising Intensity.Lubricant can reduce the interfacial resistance between plastic powder and plant fiber, improve between plastics and plant fiber Sliding property so that plastics and plant fiber when heating is kneaded it is more uniform.The addition of fire retardant can reduce wood moulding Kindling possibility of the composite plate in the case where encountering open fire or high-temperature condition improves so that improving the flame retardant effect of wood-plastic clad plate Safety.Foaming agent makes plastics decompose the release gases such as carbon dioxide and nitrogen in forming process, and forms in polymer Middle formation pore reduces the density of plastics, and can be effectively reduced the surface tension of liquid, enables filler and plastics Carry out the performance so more preferable that combine, raising filler combines.

The present invention is further arranged to: the lubricant includes following components in percentage by weight:

By using above-mentioned technical proposal, fatty acid cadmium and fatty acid calcium are all metallic soaps, are had when being used together certain Synergy, the effect of lubrication can be improved.N,N' ethylene bis stearmide and cis- 9- octadecenamide are amide Series lubricant agent, methyl-silicone oil is a kind of silicone oil series lubricant agent, can be from multiple sides when being used together with metal soap lubricant It is lubricated to the high-polymer molecule in plastics, but also the andfrictional conditions of polymer Yu equipment metal surface can be improved, So that product is easy demoulding.

The present invention is further arranged to: the foaming agent includes following components in percentage by weight:

Azodicarbonamide 20~60%；

Sodium bicarbonate 10~30%；

2- ethyl acetic acid zinc 10~30%.

By using above-mentioned technical proposal, azodicarbonamide is a kind of efficient organic foaming agent, and gas forming amount is high, and The nitrogen and carbon dioxide released is not easy to escape from foaming body, and foaming effect is more excellent.And 2- ethyl acetic acid zinc metal compound Object can make the amide group of azodicarbonamide hydrolyze, to obviously accelerate decomposition rate, improve foaming effect.Carbon Sour hydrogen sodium has many advantages, such as that safety, nucleating effect are good as inorganic foaming agent, and cheap, can reduce cost.

A kind of preparation method of temperature variation resistant wood-plastic board, comprising the following steps:

S1: the raw material for being used to make temperature variation resistant wood-plastic board is taken out in proportion out of feed bin；

S2: adding raw materials into blender and be stirred, and is then delivered in mixing screw and is heated by conveying equipment It is kneaded, according still further to mold extrusion forming；

S3: wood-plastic board after molding is sent into drying machine and carries out wind cold drying；

S4: the storage of piler stacking is sent into after the wood-plastic board after drying is carried out accurate trimming with bead cutter.

By using above-mentioned technical proposal, wood-plastic board first passes through sorting in the production process and in proportion selects raw material, so It is stirred afterwards by blender uniformly mixed, then heating is so that plastic melt in raw material and plant fiber and various help Agent is mutually mixed uniformly, then by extrusion moulding, suppresses the wood-plastic board matched with mold, wood-plastic board passes through again to be dried to Type is hardened.Then after post-processing again by slice, stacking etc., the wood-plastic board of required finished product is obtained.The preparation process letter of wood-plastic board It is single quick, it can be convenient and efficiently produced.

Compared with prior art, the beneficial effects of the present invention are:

1, make wood-plastic board under the situation compared with low temperature in wood-plastic board by adding temperature variation resistant agent in the raw material of wood-plastic board Plastic components be not easy to be hardened, improve the convenience of installation；

2, by adding a variety of auxiliary agents and filler in the raw material of wood-plastic board, each to the same of performance of wood moulding board finished product is improved When, it is also possible that the resistance to low temperature of plastics gets a promotion in wood-plastic board.

Specific embodiment

Below with reference to embodiment, the present invention will be described in detail.

A kind of temperature variation resistant wood-plastic board disclosed by the invention and preparation method thereof, temperature variation resistant wood-plastic board is by following weight percent Raw material composition: plastic powder particle 20%, plant fiber 70%, temperature variation resistant agent 0.3%, other auxiliary agents 0.5%, filler 9.2%.

Wherein, the component A and component B for being 1: 2 including weight ratio in plastic powder particle, component A are polyethylene, and component B is 25% 2-phenylindone, 30% magnesium stearate, 25% 5- methyl -2-phenylindone and 20% silicone powder.

Temperature variation resistant agent includes following components in percentage by weight: magnesium stearate 14%, butyl stearate 30%, decanedioic acid two Monooctyl ester 40%, diisononyl phthalate 10%, lauryl sodium sulfate 6%.

Filler includes the component of following parts by weight: floating bead 60%, copper fiber 20%, polytetrafluoroethylene (PTFE) 5%, nanometer two Silica 15%.

Other auxiliary agents include following components in percentage by weight: plasticizer 50%, initiator 20%, lubricant 5%, fire-retardant Agent 5%, foaming agent 20%.Plasticizer selects dibutyl phthalate；Initiator selects azodiisobutyronitrile；Fire retardant is selected Magnesium hydroxide.

Lubricant includes following components in percentage by weight: fatty acid cadmium 30%, fatty acid calcium 30%, N, N'- ethylidene Bis-stearamides 20%, cis- 9- octadecenamide 10%, methyl-silicone oil 10%.

Foaming agent includes following components in percentage by weight: azodicarbonamide 60%, sodium bicarbonate 30,2- ethyl acetic acid Zinc 10%.

The preparation method of the temperature variation resistant wood-plastic board the following steps are included:

S1: the raw material for being used to make fade-proof wood-plastic clad plate is taken out in proportion out of feed bin；

S2: adding raw materials into blender and be stirred, and is then delivered in mixing screw and is heated by conveying equipment It is kneaded, according still further to mold extrusion forming；

S3: wood-plastic board after molding is sent into drying machine and carries out wind cold drying；

S4: the storage of piler stacking is sent into after the wood-plastic board after drying is carried out accurate trimming with bead cutter.