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Anti-stretching anti-bending wood-plastic composite material and preparation method thereof

A technology of composite materials and bent wood, which is applied in the field of tensile and bending resistant wood-plastic composite materials and its preparation, can solve problems such as insufficient strength, deformation and fracture, achieve low cost, significant tensile and bending resistance, and solve environmental pollution problems Effect

Inactive Publication Date: 2015-09-16
江苏旭华圣洛迪建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing wood-plastic composite materials are often deformed and fractured due to insufficient strength. How to improve the tensile and bending resistance of wood-plastic composite materials has become a major problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A tensile and bending-resistant wood-plastic composite material, consisting of the following components in parts by weight:

[0015] 10 parts wheat straw

[0016] 10 servings of soybean straw

[0017] Polyethylene 15 parts

[0018] Polysebacic anhydride 5 parts

[0019] 1 part zinc stearate

[0020] Its preparation steps are as follows:

[0021] (1) Add 10 parts of wheat straw, 10 parts of soybean straw 80-mesh mixed powder and 5 parts of polysebacic anhydride into the mixer and pre-mix for 10 minutes, and the pre-mixing temperature is 55 °C;

[0022] (2) Add 15 parts of polyethylene and 1 part of zinc stearate into the mixer and mix evenly, after cooling, melt, blend, extrude and granulate in a twin-screw extruder to form granular semi-finished materials;

[0023] (3) Put the semi-finished material into a hot runner co-extrusion mold under the action of a high temperature of 150°C and a pressure of 20Mpa for hot-melt extrusion molding to obtain a tensile and bendi...

Embodiment 2

[0025] A tensile and bending-resistant wood-plastic composite material, consisting of the following components in parts by weight:

[0026] 15 parts wheat straw

[0027] 10 parts cotton straw

[0028] 25 parts polypropylene

[0029] 6 parts of polyazelaic anhydride

[0030] Zinc stearate 2 parts

[0031] Its preparation steps are as follows:

[0032] (1) Add 15 parts of wheat straw, 10 parts of cotton straw 70-mesh mixed powder and 6 parts of polyazelaic anhydride into the mixer for pre-mixing for 15 minutes, and the pre-mixing temperature is 60°C;

[0033] (2) Add 25 parts of polypropylene and 2 parts of zinc stearate into the mixer and mix evenly, after cooling, melt, blend, extrude and granulate in a twin-screw extruder to form granular semi-finished materials;

[0034] (3) Under the action of high temperature of 170℃ and pressure of 22Mpa, the semi-finished material is put into a hot runner co-extrusion mold for hot-melt extrusion molding to obtain a tensile and bendi...

Embodiment 3

[0036] A tensile and bending-resistant wood-plastic composite material, consisting of the following components in parts by weight:

[0037] 20 servings of soybean straw

[0038] Cotton straw 15 parts

[0039] Polyethylene 15 parts

[0040] 15 parts polypropylene

[0041] Polysebacic anhydride 8 parts

[0042] Oxidized polyethylene 4 parts

[0043] Its preparation steps are as follows:

[0044] (1) Add 20 parts of soybean straw, 10 parts of cotton straw 60-mesh mixed powder and 8 parts of polysebacic anhydride into the mixer for pre-mixing for 25 minutes, and the pre-mixing temperature is 70°C;

[0045] (2) Add 15 parts of polyethylene, 15 parts of polypropylene and 4 parts of oxidized polyethylene into the mixer and mix evenly. After cooling, melt, blend, extrude and granulate in a twin-screw extruder to form granular semi-finished materials;

[0046] (3) Under the action of high temperature of 180℃ and pressure of 26Mpa, the semi-finished material is put into a hot runn...

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PUM

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Abstract

The invention discloses an anti-stretching anti-bending wood-plastic composite material which consists of the following components in parts by weight: 20-40 parts of wood fiber base material, 15-40 parts of plastic base material, 5-10 parts of compatilizer and 1-5 parts of processing aid. The preparation method comprises the following steps: premixing the wood fabric base material with the compatilizer; adding the plastic base material and uniformly mixing with the processing aid; cooling, melting, extruding and granulating; and performing hot-melt extrusion moulding to obtain the anti-stretching anti-bending wood-plastic composite material. According to the anti-stretching anti-bending wood-plastic composite material and preparation method disclosed by the invention, the production raw materials are simple and easily available and safe and environment-friendly, the preparation technology is simple and easy to operate, and the obtained product has remarkable anti-stretching anti-bending property.

Description

technical field [0001] The invention relates to a wood-plastic composite material, in particular to a tensile-resistant and bending-resistant wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a composite material that is made of plastic base material and wood fiber or plant fiber as the main raw materials, compounded in a certain proportion, and processed by a special process. It has the dual characteristics of wood and plastic. Wood-plastic composite materials have a wide range of applications, covering almost all fields of use of logs, plastics, plastic steel, aluminum alloys and other similar composite materials, and because it is environmentally friendly, cost-effective, and recyclable, it also solves the problem of composite materials. , Recycling of waste resources in the timber industry. However, the existing wood-plastic composite materials are often deformed and fractured due to insuff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L23/12C08L73/02C08L23/30C08K5/098
Inventor 李靖何军许世华戴东花马长城严永刚
Owner 江苏旭华圣洛迪建材有限公司