Plastic lignified board and its making method

A technology for plastic wood and board, applied in the field of plastic wood board and its preparation, can solve problems such as unsatisfactory properties such as strength, and achieve the effects of reducing air pollution, low water absorption, and beneficial to decoration

Active Publication Date: 2008-07-30
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application 03135336.3 introduces "a production method of foamed wood-plastic recombined wood", but this method is to coat the plastic powder on the surface of the plant substrate and then press it into shape, so the strength and other properties of the final product are not satisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a plastic lignified board, the weight ratio of its components is:

[0016] Polyethylene 60%

[0017] Bamboo Fiber 18%

[0018] Calcium Carbonate 3%

[0019] Talc 2%

[0020] Azodicarbonamide 2%

[0021] Paraffin 1%

[0022] Chlorinated Polyethylene 11%

[0023] Antimony oxide 2%

[0024] Dioctyl phthalate 1%

[0025] The preparation method is as follows: 1. Firstly, the plant fiber is dehydrated and finely powdered by microwave, and the moisture content is controlled to 0.5%, and the plastic is subjected to conventional pulverization and drying treatment; 2. The components are uniformly mixed in a high-speed mixer according to the above ratio; 3. Then use the extruder to extrude and cool and granulate; 4. Finally enter the screw extruder for extrusion molding, the screw compression ratio is 3.5, carry out shaping, cooling, pulling, curling and cutting to obtain the finished product. The temperature of the feeding section and the extrusion section a...

Embodiment 2

[0026] Embodiment 2, a plastic lignified board, the weight ratio of its components is:

[0027] Polypropylene 50%

[0028] Wood fiber 30%

[0029] Calcium Carbonate 7%

[0030] Azodicarbonamide 1%

[0031] Paraffin 2%

[0032] Cadmium Stearate 2%

[0033] Antimony oxide 4.8%

[0034] Dioctyl phthalate 2%

[0035] Titanium dioxide 1%

[0036] Pentaerythritol esters 0.1%

[0037] Benzotriazole 0.1%

[0038] The preparation method refers to Example 1, wherein the temperature of the feeding section and the extrusion section are controlled at 140-210°C.

Embodiment 3

[0039] Embodiment 3, a plastic lignified board, the weight ratio of its components is:

[0040] Polypropylene 20%

[0041] HDPE 15%

[0042] ABS plastic 10

[0043] Crop Fiber 40%

[0044] Talc 3.7%

[0045] Azodicarbonamide 1%

[0046] Paraffin 1%

[0047] Cadmium Stearate 1%

[0048] Antimony oxide 5%

[0049] Dioctyl phthalate 1%

[0050] Titanium dioxide 1%

[0051] Pentaerythritol esters 0.1%

[0052] Nickel Dinonyldisulfamide 0.1%

[0053] Thiodipropionate Dilauric Acid 0.1%

[0054] Pigment 1%

[0055] The preparation method refers to Example 1. Polypropylene, high-density polyethylene, and ABS plastics are all waste plastics, and the temperature of the feeding section and the extrusion section are controlled at 140-170°C. It can be made into a pallet of 1.0m×1.2m, and its performance indicators are shown in the table below:

[0056] carry

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PUM

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Abstract

The present invention relates to composite material of plastic and plant fiber, and is especially plastic-lignifying board and its preparation process. The plastic-lignifying board is prepared with plastic 45-70 wt%, plant fiber 10-45 wt%, stuffing 3-10 wt%, foaming agent 1-2 wt% and assistant 3-15 wt%. The preparation process includes microwave dewatering and powdering plant fiber, crushing and drying plastic, mixing in high speed mixer, extruding and pelletizing in extruder, extruding in screw extruder to form, setting, cooling, drawing, coiling and cutting. The plant fiber has water content of 0.5 %, the material feeding temperature and the extrusion temperature are controlled in 100-250 deg.c, and the compression ratio of the screw extruder is 2-5. The present invention may be used to replace timber for various products.

Description

Technical field: [0001] The invention relates to a composite material of plastic and plant fiber and a preparation method thereof, in particular to a plastic lignified board and a preparation method thereof. Background technique: [0002] In today's world, environmental protection and resource issues have become unavoidable practical issues in the development of a globalized economy. Up to now, the international community has formulated more than 150 treaties related to the environment and resources. There are more and more environmental protection laws and regulations formulated by countries all over the world, and they have played a very important role in protecting the living environment of human beings. Green economy has become the trend of world economic development. [0003] In the past 20 years, my country's rapid economic growth, the development of building materials, furniture, packaging materials and papermaking industries, the demand for wood is as high as 110 mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L55/02C08L97/02B29C47/36B29C48/395
CPCB29C47/38B29C47/0066B29C48/0022B29C48/395
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