Anti-molten droplet flame-retardant polylactic acid composite material and preparation method thereof

A technology of composite materials and polylactic acid, which is applied in the field of anti-droplet flame-retardant polylactic acid composite materials and its preparation, can solve the problems of polylactic acid materials such as flammability and limitation, and achieve enhanced molecular bonding, low preparation cost, and high preparation conditions. mild effect

Active Publication Date: 2021-11-02
ANHUI LIANKE WATER BASED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the polylactic acid material in the prior art is flammable, and the flame retardancy of the existing polylactic acid composite material limits its application, and proposes a kind of anti-melting droplet flame-retardant polylactic acid composite material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The anti-droplet flame retardant polylactic acid composite material proposed by the present invention includes the following raw materials in parts by weight: 55 parts of lactic acid oligomers, 30 parts of polycarbonate, 3 parts of di-tert-butyl peroxide, and 20 parts of modified straw fibers. parts, 2 parts of chain extender, 5 parts of flame retardant, 6 parts of additives;

[0023] Wherein, the lactic acid oligomer is obtained by the following methods: (1) dehydration and degassing pretreatment of raw lactic acid is carried out to obtain pretreated lactic acid; (2) under the condition of microwave radiation under normal pressure, the conditions of microwave radiation are set as follows: The frequency is 500MHz, the power is 100W, the temperature is 60°C, the time is 1h, and the pretreated lactic acid is reacted with zinc oxide and aluminum chloride according to the mass ratio of 100:3:5 to obtain lactic acid oligomers;

[0024] The modified straw fiber is prepared by...

Embodiment 2

[0033] The anti-melting and flame-retardant polylactic acid composite material proposed by the present invention includes the following raw materials in parts by weight: 60 parts of lactic acid oligomers, 32 parts of polycarbonate, 3.5 parts of di-tert-butyl peroxide, and 22 parts of modified straw fibers. parts, 2.5 parts of chain extender, 6 parts of flame retardant, 7 parts of additives;

[0034] Wherein, the lactic acid oligomer is obtained by the following methods: (1) dehydration and degassing pretreatment of raw lactic acid is carried out to obtain pretreated lactic acid; (2) under the condition of microwave radiation under normal pressure, the conditions of microwave radiation are set as follows: The frequency is 520MHz, the power is 120W, the temperature is 65°C, the time is 1.2h, and the pretreated lactic acid is reacted with zinc oxide and aluminum chloride according to the mass ratio of 100:3:5 to obtain lactic acid oligomers;

[0035] The modified straw fiber is p...

Embodiment 3

[0044]The anti-melting and flame-retardant polylactic acid composite material proposed by the present invention includes the following raw materials in parts by weight: 65 parts of lactic acid oligomers, 35 parts of polycarbonate, 4 parts of di-tert-butyl peroxide, and 24 parts of modified straw fibers. parts, 3 parts of chain extender, 8 parts of flame retardant, 8 parts of additives;

[0045] Wherein, the lactic acid oligomer is obtained by the following methods: (1) dehydration and degassing pretreatment of raw lactic acid is carried out to obtain pretreated lactic acid; (2) under the condition of microwave radiation under normal pressure, the conditions of microwave radiation are set as follows: The frequency is 550MHz, the power is 150W, the temperature is 70°C, the time is 1.5h, and the pretreated lactic acid is reacted with zinc oxide and aluminum chloride according to the mass ratio of 100:3:5 to obtain lactic acid oligomers;

[0046] The modified straw fiber is prepar...

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Abstract

The invention belongs to the technical field of high polymer materials, particularly relates to an anti-molten droplet flame-retardant polylactic acid composite material and a preparation method thereof, and aims to solve the problems that in the prior art, a polylactic acid material is inflammable, and the application of the polylactic acid composite material is limited due to the flame retardant property of the existing polylactic acid composite material. The anti-molten droplet flame-retardant polylactic acid composite material comprises the following raw materials in parts by weight: 55-75 parts of lactic acid oligomer, 30-40 parts of polycarbonate, 3-5 parts of di-tert-butyl peroxide, 20-28 parts of modified straw fibers, 2-4 parts of a chain extender, 5-12 parts of a flame retardant and 6-10 parts of an additive. The polylactic acid composite material obtained by the invention keeps excellent characteristics of polylactic acid, and also has good flame retardance, molten droplet resistance, acid and alkali corrosion resistance, heat resistance and aging resistance. The preparation method is simple, the preparation condition is mild, the preparation process is environment-friendly, the preparation cost is low, and the obtained product is excellent in comprehensive performance and can be widely applied.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a drop-resistant and flame-retardant polylactic acid composite material and a preparation method thereof. Background technique [0002] Polylactic acid (H-[OCHCH 3 CO]n-OH), also known as polylactide, belongs to the polyester family. It is a polymer obtained by polymerizing lactic acid as the main raw material. It is a new type of biodegradable material. The source of lactic acid, the raw material of polylactic acid, is relatively wide. It mainly uses starch extracted from some plants such as corn, wheat, and cassava as the main raw material. It is decomposed by enzymes to obtain glucose, and then fermented by lactic acid bacteria to obtain lactic acid. With the rapid development of modern industry, the waste of resources and the deterioration of the environment have become more and more serious, and the development and utilization of natural products have received mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L69/00C08L97/02C08K3/38C08K5/06
CPCC08L67/04C08L2201/02C08L2201/08C08K2003/387C08L69/00C08L97/02C08K3/38C08K5/06Y02W90/10
Inventor 张金柱翟晓玮
Owner ANHUI LIANKE WATER BASED MATERIAL TECH
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