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Low-density wood plastic board and preparation method thereof

A low-density, wood-plastic technology, applied in the field of decorative materials, can solve the problems of difficult control of the processing process of wood-plastic board products, unfavorable overall weight reduction and energy saving, and heavy unit weight, etc., to achieve expanded use range, light weight, Hardness reduction effect

Inactive Publication Date: 2013-01-16
山东只楚民营科技园股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also some obvious deficiencies. One is that the density of wood-plastic panels is generally 1100kg / m 3 Left and right, the unit weight is relatively heavy, and it is not conducive to overall weight reduction and energy saving when used in automotive interiors; secondly, wood powder has strong water absorption and strong polarity, while plastic particles are non-polar. It is hydrophobic, and the compatibility between the two is poor, and additives need to be added to improve the interfacial affinity between the two; at the same time, the cellulose and lignin of wood flour are easy to decompose under aerobic high temperature, and smoke and discoloration occur. Therefore, the processing process of wood-plastic panel products is difficult to control; in the face of the technical problems existing in the existing wood-plastic panel, how to overcome the deficiencies of the existing technology and design a , light weight, energy-saving low-density wood-plastic board and its preparation method are also technical issues to be solved urgently for those skilled in the art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A low-density wood-plastic panel in Example 1 of the present invention is based on the premise of satisfying the base material used for the interior decoration of conventional passenger cars. A low-density wood-plastic board, prepared from the following raw materials in parts by weight: 35 parts of polyethylene particles, 20 parts of 80-mesh wood powder, 0.3 parts of AC foaming agent, 1 part of malanic anhydride graft coupling agent, nucleating 0.15 parts of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate n-octadecyl alcohol ester 0.15 parts.

[0021] The preparation method of the above-mentioned low-density wood-plastic board, it is through the following steps:

[0022] (1) take each raw material by weight part of formula;

[0023] (2) The weighed polyethylene particles, 80 mesh wood flour, AC foaming agent, malanic anhydride graft coupling agent, nucleating agent, β-(3,5-di-tert-butyl-4-hydroxyphenyl ) The n-octadecanyl propionate raw material is placed in a mixer ...

Embodiment 2

[0027] A low-density wood-plastic panel in Example 2 of the present invention is based on the premise of satisfying the base material used for the interior decoration of ordinary cars. A low-density wood-plastic board, prepared from the following raw materials in parts by weight: 60 parts of polypropylene particles, 60 parts of 120-mesh wood powder, 1 part of AC foaming agent, 5 parts of malanic anhydride graft coupling agent, nucleating 0.5 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 0.6 parts.

[0028] The preparation method of the above-mentioned low-density wood-plastic board, it is through the following steps:

[0029] (1) take each raw material by weight part of formula;

[0030] (2) The weighed polypropylene particles, 120 mesh wood flour, AC foaming agent, malanic anhydride graft coupling agent, nucleating agent, tetrakis [β-(3,5-di-tert-butyl-4-hydroxyl Phenyl) propionate] pentaerythritol ester raw material is placed in...

Embodiment 3

[0034] A low-density wood-plastic board according to Embodiment 3 of the present invention is based on the premise of satisfying the base materials used in existing ordinary building decoration. A low-density wood-plastic board, prepared from the following raw materials in parts by weight: 40 parts of polystyrene particles, 30 parts of 90-mesh wood flour, 0.5 parts of AC foaming agent, 1.5 parts of malanic anhydride grafted coupling agent, and 0.2 parts of nucleating agent, 0.2 parts of butylated hydroxytoluene.

[0035] The preparation method of the above-mentioned low-density wood-plastic board, it is through the following steps:

[0036] (1) take each raw material by weight part of formula;

[0037] (2) The polystyrene particles, 90 mesh wood powder, AC foaming agent, malanic anhydride graft coupling agent, nucleating agent, dibutyl hydroxytoluene raw material placed in the mixer and stirred for 10-15 minutes to make It is fully stirred evenly;

[0038] (3) Put the unifo...

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Abstract

The invention discloses a low-density wood plastic board and a preparation method thereof and belongs to the technical field of decorative materials. The technical scheme is that: the low-density wood plastic board is prepared from the following raw materials in part by weight: 35 to 60 parts of plastic particles, 20 to 60 parts of wood meal, 0.3 to 1 part of azodicarbonamide (AC) foaming agent, 1 to 5 parts of maleic anhydride grafted coupling agent, 0.15 to 0.5 part of nucleating agent and 0.15 to 0.6 part of antioxidant; and the low-density wood plastic board is processed by the process steps of material weighing, material mixing, extrusion and calendaring. Compared with the prior art, the invention has the advantages that the low-density wood plastic board can be recycled and is renewable; and the overall weight of the low-density wood plastic board is reduced by the microfoaming process, so that the energy is saved, the cost is reduced, and the economic benefit of enterprises is improved.

Description

technical field [0001] The invention relates to the technical field of decorative materials, in particular to the technical field of a low-density wood-plastic plate used for vehicle interior materials and a preparation method thereof. Background technique [0002] With the rapid development of science and technology and the strengthening of environmental protection awareness, renewable and recyclable wood-plastic composite panels have attracted more and more attention from the society. Its application fields have involved car interior decoration substrates, architectural decoration, decorative materials, Outdoor seats, benches and furniture used in parks, stadiums, streets and other public places. Wood-plastic panels have been widely recognized and applied because of their good reprocessing performance and dimensional stability of the finished products, and the strong woody appearance of the product; especially because they do not contain formaldehyde, they not only meet th...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L27/06C08L97/02C08J9/10B29C69/02B29L7/00
Inventor 任桂贤姜前道揣成智王雪华春晓鞠宝钢
Owner 山东只楚民营科技园股份有限公司
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