Biodegradable composite material and preparation method thereof

A composite material and biodegradation technology, applied in the field of biodegradable composite materials and their preparation, can solve problems such as insufficient flame retardant performance and poor degradation, and achieve the effects of improving flame retardant performance, improving mechanical properties, and improving structure

Active Publication Date: 2020-01-03
SOUTHWEAT UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a biodegradable composite material and its preparation method, which can effectively solve the problems of insufficient flame retardancy and poor degradation of the existing composite materials

Method used

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  • Biodegradable composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] A biodegradable composite material, comprising the following components by weight:

[0027] 70 parts of polylactic acid, 10 parts of starch, 5 parts of 50-mesh bamboo charcoal powder, 5 parts of 200-mesh bamboo charcoal powder, 5 parts of silane coupling agent KH-5500, 5 parts of modifier, 1 part of ammonium polyphosphate, 5 parts of melamine, and 5 parts of polyethylene glycol.

[0028] Wherein, the preparation method of modifying agent is as follows:

[0029] Mix starch and acetic anhydride at a molar ratio of 5:0.5, stir and react for 60 minutes, and then wash the product with absolute ethanol.

[0030] The preparation method of the above-mentioned biodegradable composite material comprises the following steps:

[0031] (1) modifier and 50 mesh bamboo charcoal powder are melted and mixed according to the formula, and set aside;

[0032] (2) Dry the ammonium polyphosphate and melamine respectively at 95°C for 4 hours, and mix them evenly after cooling to room tempe...

Embodiment 2

[0035] A biodegradable composite material, comprising the following components by weight:

[0036] 80 parts of polylactic acid, 15 parts of starch, 8 parts of 100-mesh bamboo charcoal powder, 5 parts of 300-mesh bamboo charcoal powder, 10 parts of titanate, 10 parts of modifier, 5 parts of ammonium polyphosphate, 15 parts of melamine, and polyethylene glycol Alcohol 10 parts.

[0037] Wherein, the preparation method of modifying agent is as follows:

[0038] Mix starch and acetic anhydride at a molar ratio of 10:0.1, stir and react for 30 minutes, and then wash the product with absolute ethanol.

[0039] The preparation method of the above-mentioned biodegradable composite material comprises the following steps:

[0040] (1) According to the formula, the modifier is mixed with 100 mesh bamboo charcoal powder for subsequent use;

[0041] (2) Dry the ammonium polyphosphate and melamine at 150°C for 8 hours respectively, and then mix them evenly after cooling to room temperatu...

Embodiment 3

[0044] A biodegradable composite material, comprising the following components by weight:

[0045] 70 parts of polylactic acid, 12 parts of starch, 5 parts of 80-mesh bamboo charcoal powder, 3 parts of 260-mesh bamboo charcoal powder, 3 parts of silane coupling agent KH-5500, 6 parts of modifier, 2 parts of ammonium polyphosphate, 10 parts of melamine, and 6 parts of polyethylene glycol.

[0046] Wherein, the preparation method of modifying agent is as follows:

[0047] Mix starch and acetic anhydride at a molar ratio of 5:3, stir and react for 30 minutes, and then wash the product with absolute ethanol.

[0048] The preparation method of the above-mentioned biodegradable composite material comprises the following steps:

[0049] (1) modifier and 80 mesh bamboo charcoal powder are melted and mixed according to the formula, and set aside;

[0050] (2) Dry the ammonium polyphosphate and melamine respectively at 150°C for 4 hours, and mix them evenly after cooling to room temp...

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Abstract

The invention discloses a biodegradable composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 70-80 parts of polylactic acid, 10-15 parts of starch, 2-8 parts of 50-to-100-mesh bamboo charcoal powder, 1-5 parts of 200-to-300-mesh bamboo charcoal powder, 3-10 parts of a coupling agent, 5-10 parts of a modifier, 1-5 parts of ammonium polyphosphate, 5-15 parts of melamine and 5-10 parts of polyethylene glycol. The composite material prepared in the invention has excellent degradation performance and flame retardance.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a biodegradable composite material and a preparation method thereof. Background technique [0002] With the increasing needs of people's lives, the amount of non-degradable polymer materials is rapidly increasing. The large-scale use of non-degradable polymer materials will undoubtedly cause serious white pollution to the environment. With the improvement of people's living standards, people's awareness of environmental protection has gradually increased. Protecting the environment, reducing white pollution, and developing environmentally friendly materials are the only way for the sustainable development of the material industry. Therefore, environmentally friendly composite materials have also emerged, especially degradable polymer materials. Combining natural plant fiber raw materials with biodegradable resins to prepare degradable, high-per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L3/02C08L71/02C08L3/06C08K13/04C08K7/24C08K3/32C08K5/3492
CPCC08L67/04C08L2205/035C08L2201/06C08K2201/014C08K2003/323C08K2201/005C08L3/02C08L71/02C08L3/06C08K13/04C08K7/24C08K3/32C08K5/34922
Inventor 彭碧辉何利光王玉平
Owner SOUTHWEAT UNIV OF SCI & TECH
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