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Straw powder-PLA (polylactic acid) wood plastic composite material preparation method

A wood-plastic composite material and straw powder technology, which is applied in the field of straw powder-PLA wood-plastic composite material preparation, can solve the problems of high price and high brittleness of PLA, achieve good toughness and mechanical strength, enhance bonding force, and broaden the application range Effect

Active Publication Date: 2018-09-14
广东品凡派塑胶实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of PLA is relatively high, and it exhibits greater brittleness, which also limits the application of PLA in many fields.

Method used

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  • Straw powder-PLA (polylactic acid) wood plastic composite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of straw powder-PLA wood-plastic composite material, comprising the following steps:

[0019] a. Take the crushed straw powder, the particle size of the straw powder is 80 mesh, and dry it in a drying oven at a drying temperature of 80°C for 4 hours;

[0020] b. Take the silane coupling agent KH-560 with a concentration of 5%, fully soak the dry straw powder, let it stand at 80°C for 2 hours, and dry it again at 100°C;

[0021] c. Take 50 parts of PLA, 25 parts of SBS plastic, and 5 parts of PLA-g-MAH, and uniformly mix them in a high-speed mixer at a mixing temperature of 80°C for 15 minutes. After drying, raw material A is obtained;

[0022] d. Take 20 parts of straw powder, 3 parts of synthetic vegetable ester environment-friendly plasticizer, 1 part of AC foaming agent, 4 parts of zinc stearate, and 3 parts of ultrafine talcum powder, and mix them with raw material A in a mixer. Mixing, the mixing temperature is 80°C, the mixing time is 15 minu...

Embodiment 2

[0026] A preparation method of straw powder-PLA wood-plastic composite material, comprising the following steps:

[0027] a. Take the crushed straw powder, the particle size of the straw powder is 80 mesh, and dry it in a drying oven at a drying temperature of 80°C for 4 hours;

[0028] b. Take the silane coupling agent KH-560 with a concentration of 5%, fully soak the dry straw powder, let it stand at 80°C for 2 hours, and dry it again at 100°C;

[0029] c. Take 50 parts of PLA, 25 parts of PBS plastic, and 5 parts of PLA-g-MAH, and mix them uniformly in a high-speed mixer at a mixing temperature of 80°C for 15 minutes, and dry to obtain raw material A;

[0030] d. Take 20 parts of straw powder, 3 parts of synthetic vegetable ester environment-friendly plasticizer, 1 part of AC foaming agent, 4 parts of zinc stearate, and 3 parts of ultrafine talcum powder, and mix them with raw material A in a mixer. Mixing, the mixing temperature is 80°C, the mixing time is 15 minutes, and...

Embodiment 3

[0034] A preparation method of straw powder-PLA wood-plastic composite material, comprising the following steps:

[0035] a. Take the crushed straw powder, the particle size of the straw powder is 80 mesh, and dry it in a drying oven at a drying temperature of 80°C for 4 hours;

[0036] b. Take the silane coupling agent KH-560 with a concentration of 5%, fully soak the dry straw powder, let it stand at 80°C for 2 hours, and dry it again at 100°C;

[0037] c. Take 50 parts of PLA, 25 parts of PBS plastic, and 7 parts of PLA-g-MAH, and uniformly mix them in a high-speed mixer at a mixing temperature of 80°C for 15 minutes, and dry to obtain raw material A;

[0038] d. Take 30 parts of straw powder, 3 parts of synthetic vegetable ester environment-friendly plasticizer, 1 part of AC foaming agent, 4 parts of zinc stearate, and 3 parts of ultrafine talcum powder, and mix them with raw material A in a mixer. Mixing, the mixing temperature is 80°C, the mixing time is 15 minutes, and...

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Abstract

The invention discloses a straw powder-PLA (polylactic acid) wood plastic composite material preparation method. According to the method, PLA and straw powder serve as main components of a composite material to ensure that the composite material has the advantage that the composite material can be completely degraded, and most of added additives are environmentally friendly, so that the compositematerial has the advantage that the composite material is environmentally friendly. Various additives are added in the preparation process, and the binding force between the PLA and the straw powder is enhanced. The prepared composite material can improve brittleness and strength of a PLA material and has good toughness and mechanical strength.

Description

technical field [0001] The invention relates to a method for preparing a straw powder-PLA wood-plastic composite material, which belongs to the technical field of environmental protection materials. Background technique [0002] As a completely biodegradable plastic, polylactic acid (PLA) has attracted much attention in plastic products and has been widely used in various fields, contributing to the protection of the environment and the realization of sustainable development. However, the price of PLA is relatively high, and it exhibits greater brittleness, which also limits the application of PLA in many fields. [0003] Based on the contradiction between the disadvantages of PLA and the environmental protection materials, it has become a research hotspot of environmental protection materials by compounding PLA with degradable substances. The application of plant fiber materials in plastic modification has gradually attracted the attention of countries all over the world. ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L53/02C08L67/02C08L51/08C08L97/02C08K5/098C08K3/34C08J9/10
CPCC08J9/103C08J2203/04C08J2367/04C08J2453/02C08J2467/02C08J2497/02C08K3/34C08K5/098
Inventor 黄龙祥
Owner 广东品凡派塑胶实业有限公司
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