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Recycled wood-plastic composite material and preparation method thereof

A composite material and regenerated wood technology, which is applied in the field of regenerated wood-plastic composite materials and its preparation, can solve problems such as prone to side reactions, affect the performance of wood-plastic composite materials, and poor plant fiber modification effects, and achieve excellent mechanical properties , high flexural strength, and improved wettability

Pending Publication Date: 2018-10-19
HUNAN YINGHONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used modifiers and coupling agents are not effective in modifying plant fibers, and side reactions are prone to occur under high temperature conditions, which affect the performance of wood-plastic composites.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A regenerated wood-plastic composite material, comprising the following components in mass percentage: waste PE flakes 15%, waste PS flakes 10%, plant fiber powder 65%, AC foaming agent 1%, phosphoramidate 5% %, diglyceride 1%, tert-butyldiphenylchlorosilane 3%, wherein the size of waste PE flakes is 3.5-5cm, and the size of waste PS flakes is 1-3cm.

[0038]Preparation method: 1) crush the recovered and dried plant fiber and pass it through a molecular sieve of 300-500 μm, and dry it to a water content of 2-3% to obtain plant fiber powder; 2) add plant fiber powder to phosphoramidate, diglyceride and tertiary Butyldiphenylchlorosilane, heated to 110°C, fully mixed with a mixer; 3) Add waste PE flakes and waste PS flakes to the mixer, heat to 140°C, mix well, then cool down to 120°C, Add the mixture prepared in step 2) and mix evenly, then add AC foaming agent, mix well and cool to below 60°C to obtain the mixture; 4) Place the mixture obtained in step 3) in a twin-scre...

Embodiment 2

[0040] A regenerated wood-plastic composite material, comprising the following components in mass percentage: 18% of waste PE flakes, 12% of waste and old PS flakes, 62% of plant fiber powder, 2% of AC foaming agent, 3% of phosphoramidate %, 1% diglyceride, 2% tert-butyl diphenylchlorosilane, wherein the size of waste PE flakes is 3.5-5cm, and the size of waste PS flakes is 1-3cm.

[0041] Preparation method: 1) crush the recovered and dried plant fiber and pass it through a molecular sieve of 300-500 μm, and dry it to a water content of 2-3% to obtain plant fiber powder; 2) add plant fiber powder to phosphoramidate, diglyceride and tertiary Butyldiphenylchlorosilane, heated to 120°C, fully mixed with a mixer; 3) Add waste PE flakes and waste PS flakes to the mixer, heat to 140°C, mix well, then cool down to 120°C, Add the mixture prepared in step 2) and mix evenly, then add AC foaming agent, mix well and cool to below 60°C to obtain the mixture; 4) Place the mixture obtained ...

Embodiment 3

[0043] A recycled wood-plastic composite material, including the following components in mass percentage: 20% waste PE flakes, 15% waste PS flakes, 60% plant fiber powder, 1.5% AC foaming agent, 1 phosphoramidate %, 0.5% of diglyceride, 2% of tert-butyl diphenylchlorosilane, wherein the size of waste PE flakes is 3.5-5cm, and the size of waste and old PS flakes is 1-3cm.

[0044] Preparation method: 1) crush the recovered and dried plant fiber and pass it through a molecular sieve of 300-500 μm, and dry it to a water content of 2-3% to obtain plant fiber powder; 2) add plant fiber powder to phosphoramidate, diglyceride and tertiary Butyldiphenylchlorosilane, heated to 110°C, fully mixed with a mixer; 3) Add waste PE flakes and waste PS flakes to the mixer, heat to 130°C, mix well, then cool down to 120°C, Add the mixture prepared in step 2) and mix evenly, then add AC foaming agent, mix well and cool to below 60°C to obtain the mixture; 4) Place the mixture obtained in step 3)...

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PUM

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Abstract

The invention discloses a recycled wood-plastic composite material. The recycled wood-plastic composite material is prepared from the following components in percentage by mass: 15 to 20% of waste PEflakes, 10 to 15% of waste PS flakes, 60 to 65% of plant fiber powder, 1 to 2% of AC foaming agent, 1 to 5% of phosphoramidate, 0.5 to 1% of diglyceride, and 2 to 3% of t-butyldiphenylchlorosilane. The recycled wood-plastic composite material uses phosphoramidate and diglyceride to modify a plant fiber, and a hydroxyl group on the plant fiber can generate hydrogen-bond interaction with a amino group and an ester group in phosphoramidate and the hydroxyl group and the ester group in diglyceride, and is mixed with t-butyldiphenylchlorosilane. The polarity of the plant fiber is reduced, the interfacial compatibility between the plant fiber and plastics is improved, and the performance of the recycled wood-plastic composite material is enhanced.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic materials, and in particular relates to a recycled wood-plastic composite material and a preparation method thereof. Background technique [0002] The global forest resources are depleting day by day, the supply of wood is decreasing, but the demand is increasing. Since the 1970s, polymer material scientists and industrial circles have been making unremitting efforts to carry out research on "replacing wood with plastic". and development work. Wood-plastic composites have attracted great attention from the scientific and industrial circles. Through modification, wood-plastic composites can make full use of the respective advantages of plastics and wood and eliminate many of their inherent shortcomings. It not only overcomes the limitations of wood such as low strength and variability, but also overcomes the shortcomings of organic materials such as low modulus. It has better mechanical prop...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L25/06C08K5/54C08K5/521C08K5/103C08J9/10
CPCC08J9/0023C08J9/0038C08J9/0042C08J9/0061C08J9/103C08J2203/04C08J2397/02C08J2423/06C08J2425/06C08K5/103C08K5/521C08K5/5406
Inventor 游一兰陈建平游和求方映杰
Owner HUNAN YINGHONG SCI & TECH
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