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Wood-plastic composite for walls and preparation method thereof

A wood-plastic composite material and wood-plastic material technology, which is applied in the field of polymer processing, can solve the problems of low moisture absorption rate, weather resistance, and large amount of wood-plastic materials, and achieves low moisture absorption rate, good processing performance, and improved processing performance and mechanics. performance effect

Active Publication Date: 2010-12-01
姚喜智
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]In addition, the existing wood-plastic composite materials are generally used in boards, storage, furniture and places, and there are relatively few literature introductions for making outdoor enclosures. In the case of fences, the required amount of wood-plastic materials is large, which puts forward higher requirements for the cost of wood-plastic materials. In addition, the wood-plastic materials for making fences are also required to have high strength, good processing performance, low moisture absorption and high weather resistance

Method used

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  • Wood-plastic composite for walls and preparation method thereof
  • Wood-plastic composite for walls and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1. Preparation of wood-plastic material 1

[0033] like figure 1 As shown, the preparation method of the wood-plastic material of the present invention includes pretreatment of wood powder raw materials, drying and mixing processing with a high-speed mixer, reaction extrusion granulation with a parallel twin-screw extruder, and extrusion molding with a single-screw extruder. The components and parts by weight of the wood-plastic material are as follows:

[0034] Component and content (parts by mass) of the wood-plastic material of embodiment 1

[0035] 78 pieces of wood flour

[0036] PE plastic 20 parts

[0037] Maleic anhydride grafted polyethylene 2 parts

[0038] Tris[2.4-di-tert-butylphenyl]phosphite 0.1 part

[0039] Tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyl

[0040] 0.05 parts

[0041] Phenyl) propionate] pentaerythritol ester

[0042] Light calcium carbonate-simethicone 2 parts

[0043] In light cal...

Embodiment 2

[0062] Embodiment 2. Preparation 2 of wood-plastic material

[0063] The preparation method of the wood-plastic material in this embodiment is the same, the difference lies in the composition and content of the prepared wood-plastic material.

[0064] Component and content (parts by mass) of the wood-plastic material of embodiment 2

[0065] 68 pieces of wood flour

[0066] PE plastic 24 parts

[0067] Silane coupling agent 1 part

[0068] Maleic anhydride grafted polyethylene 2 parts

[0069] Tris[2.4-di-tert-butylphenyl]phosphite 0.1 parts

[0070] Tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyl

[0071] 0.1 part

[0072] Phenyl) propionate] pentaerythritol ester

[0073] Light calcium carbonate-simethicone 3 parts

[0074] Wherein, the mass ratio of light calcium carbonate to simethicone oil is 1:3.

[0075] With reference to GB / T17657-1999; GB / T24137-2009, the physical indicators and mechanical strength of the products prepared in t...

Embodiment 3

[0084] Embodiment 3. Preparation of wood-plastic material 3

[0085] The preparation method of the wood-plastic material in this embodiment is the same, the difference lies in the composition and content of the prepared wood-plastic material.

[0086] Component and content (parts by mass) of the wood-plastic material of embodiment 3

[0087] 75 parts wood flour

[0088] PE plastic 22 parts

[0089] Silane coupling agent 1 part

[0090] Maleic anhydride grafted polyethylene 3 parts

[0091] Tris[2.4-di-tert-butylphenyl]phosphite 0.05 part

[0092] Tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyl

[0093] 0.1 part

[0094] Phenyl) propionate] pentaerythritol ester

[0095] Light calcium carbonate-simethicone 5 parts

[0096] Wherein, the mass ratio of light calcium carbonate and simethicone oil is 2:1.

[0097] In this example, the amount of PE plastic accounts for about 20% of the total formulation amount, which is lower than the a...

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Abstract

The invention discloses a wood-plastic composite for walls, comprising the following components by mass: 68-78 parts of wood flour, 20-25 parts of PE plastics, 2-4 parts of coupling agents, 0.1-0.2 part of antioxidant and 2-5 parts of precipitated calcium carbonate-silicone oil. The invention also discloses a preparation method of the wood-plastic composite for walls. The quantity of the PE plastics in the formula of the wood-plastic composite is 20-25%, which is half as much as 50% of plastics in the common wood-plastic material, thus greatly saving the plastics and lowering the production cost, meanwhile, the prepared wood-plastic composite has the characteristics of high strength, creep resistance, good processability, low moisture rate and high weatherability.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and in particular relates to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite (WPC) is a modified thermoplastic material that is filled and reinforced with wood fiber or plant fiber, and made by different processing methods such as hot-compression compounding and melt extrusion. In recent years, with the depletion of global resources, social awareness of environmental protection has been increasing, and higher requirements have been put forward for the application of wood and petrochemical products. In this context, wood-plastic composite materials can not only take advantage of the advantages of each component in the material, overcome the limitations of use caused by low wood strength, large variability, and low elastic modulus of organic materials, but also make full use of it. Waste wood and plastic, reduce en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L97/02C08L51/06C08L83/04C08K13/04C08K7/18C08K3/26C08K3/04
Inventor 姚喜智
Owner 姚喜智
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