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PVC (Poly Vinyl Chloride) wood-plastic foaming composite and preparation method thereof

A wood-plastic foaming and composite material technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of increased product cost, high product cost, and high material self-weight, and reduce the overall cost. , The effect of low formula cost and low material density

Active Publication Date: 2012-06-20
北京欧尼克新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with the application number 00132561.2 records a co-extrusion molding process of plastic-wood profiles. The disadvantage of this process is that the density of the profiles made of wood-plastic composite materials is 1.1~1.4g / cm3, which makes the material weight relatively high. It cannot meet the requirements of light weight, impact resistance, and high heat insulation, and at the same time, the product cost is high, which is not conducive to the market promotion of the product
[0003] Moreover, the main disadvantages of plastic wood products used outdoors are;
[0004] 1. After long-term exposure to sunlight and rain, it is easy to fade and turn white, and has poor weather resistance;
[0005] 2. The service life is short, the application effect is poor, regular painting is required for protection, and the maintenance cost is high
[0006] Based on this co-extrusion technology, more and more people are trying to apply it to the production and processing of outdoor wood-plastic products, but the accompanying increase in product costs will also affect the application of plastic-wood co-extrusion products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] PVC wood-plastic foam base layer raw materials:

[0060] 100 parts of polyvinyl chloride;

[0061] 50 parts of wood powder;

[0062] Coupling agent (silane coupling agent) 1.0 parts;

[0063] Composite stabilizer (PVC calcium zinc composite stabilizer) 5 parts;

[0064] Composite blowing agent 1.0 parts;

[0065] Foaming aid 6 parts.

[0066] a. Put the wood powder into the high-speed mixer, dry the wood powder at 110-120°C for 8-10 minutes, then add the coupling agent to activate the wood powder for 5 minutes, put it into the cold mix and cool to room temperature, and discharge the cold Mix and set aside.

[0067] b. Start the high-mix and put the measured PVC (100Kg) and composite stabilizer into the high-mix through the feeding system, stir at high speed to raise the temperature of the material to 90~95°C, and then put the activated wood powder (50 Kg) and foaming aid into the high-mix At the same time, add the high-mixing agent and continue mixing to 100~105°C...

Embodiment 2

[0089] PVC wood-plastic foam base layer raw materials:

[0090] 100 parts of polyvinyl chloride;

[0091] 75 parts of wood flour;

[0092] Coupling agent (aluminum titanate coupling agent) 1.25 parts;

[0093] Composite stabilizer (PVC calcium zinc composite stabilizer) 6 parts;

[0094] 1.25 parts of composite blowing agent;

[0095] Foaming aid 7 parts.

[0096] a. Put the wood powder into the high-speed mixer, dry the wood powder at 110-120°C for 8-10 minutes, then add the coupling agent to activate the wood powder for 5 minutes, put it into the cold mix and cool to room temperature, and discharge the cold Mix and set aside.

[0097] b. Start the high-mix and put the measured PVC (100Kg) and composite stabilizer into the high-mix through the feeding system, stir at high speed to heat the material to 90~95°C, and then put the activated wood powder (75 Kg) and foaming aid At the same time, add the high-mixing agent and continue mixing to 100~105°C, then add the composit...

Embodiment 3

[0119] PVC wood-plastic foam base layer raw materials:

[0120] 100 parts of polyvinyl chloride;

[0121] 100 parts of wood powder;

[0122] Coupling agent (silane coupling agent) 1.5 parts;

[0123] Composite stabilizer (lead salt composite stabilizer) 7 parts;

[0124] Composite blowing agent 1.5 parts;

[0125] Foaming aid 8 parts.

[0126] a. Add the wood powder into the high-speed mixer, dry the wood powder at 110-120°C for 8-10 minutes, then add the coupling agent to activate the wood powder for 5 minutes, put it into the cold mix and cool to room temperature, and discharge the cold Mix and set aside.

[0127]b. Start the high-mix and put the measured PVC (100Kg) and composite stabilizer into the high-mix through the feeding system, stir at high speed to raise the temperature of the material to 90°C, and then put the activated wood powder (100 Kg) and foaming aid at the same time Add high-mix and continue to mix to 100~110°C, then add composite blowing agent, conti...

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Abstract

The invention discloses a PVC (Poly Vinyl Chloride) wood-plastic foaming composite and a preparation method of the wood-plastic foaming composite. The PVC wood-plastic foaming composite comprises a PVC wood-plastic foaming base material layer and an ASA (Acrylonitrile Styrene Acrylate) layer which is co-extruded and formed on at least one side of the PVC wood-plastic foaming base material layer, wherein the PVC wood-plastic foaming base material layer comprises the following components in parts by weight: 100 parts of PVC, 50-100 parts of paddings, 1-1.5 parts of coupling agents, 5-7 parts of compound stabilizers, 1.0-1.5 parts of compound foaming agents and 6-8 parts of blowing promoters. The PVC wood-plastic foaming composite disclosed by the invention has the characteristics of light weight, high specific strength, water prevention, corrosion prevention, heat preservation, good weather resistance, low formula cost and low material density, and can be widely used in outdoor product markets such as exterior decoration of buildings, garden landscapes, fences, plank ways and the like.

Description

technical field [0001] The invention relates to a PVC wood-plastic foam composite material and a preparation method thereof. Background technique [0002] Wood-plastic materials have the dual characteristics of wood and plastic: good mechanical properties, no fear of moths, no mold, no moisture absorption, and reusable advantages. The patent with the application number 00132561.2 records a co-extrusion molding process of plastic-wood profiles. The disadvantage of this process is that the density of the profiles made of wood-plastic composite materials is 1.1~1.4g / cm3, which makes the material weight relatively high. It cannot meet the requirements of light weight, impact resistance, and high heat insulation, and at the same time, the product cost is high, which is not conducive to the market promotion of the product. [0003] Moreover, the main disadvantages of plastic wood products used outdoors are; [0004] 1. After long-term exposure to sunlight and rain, it is easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/18C08L27/06B29C44/04B29C44/34
Inventor 韩伟黄振海
Owner 北京欧尼克新型材料有限公司
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