Lignin composite material and preparation method thereof

A composite material and lignin technology, which is applied in the field of polymer composite materials, can solve the problems of decreased mechanical properties of composite materials, easy decomposition of natural polymer compounds, complex processing process, etc., and achieve the effect of convenient processing and excellent anti-ultraviolet ability

Active Publication Date: 2010-10-06
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, natural polymer compounds generally have strong water absorption, so the composite materials made of natural polymer compounds have strong water absorption, and the water absorption will be further increased with the addition of plasticizers. , the mechanical properties of the composite material will drop significantly after contact with water; at the same time, because the natural polymer compound is easy to decompose at high temperature, the processing process is complicated and the process requirements are relatively harsh

Method used

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  • Lignin composite material and preparation method thereof
  • Lignin composite material and preparation method thereof
  • Lignin composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1 of the present invention proposes a kind of lignin composite material, and this lignin composite material is made of high purity ash lignin, polymer compound, fibrous substance, chitin, plasticizer, compatibilizer, antioxidant, flame retardant The polymer compound is made of polylactic acid and polybutylene succinate, the fiber material is bamboo fiber, the plasticizer is glycerin, the compatibilizer is polyhydroxyalkanoate, and the antioxidant is four (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester, and triphenyl phosphite as flame retardant.

[0026] Specifically, the preparation method of the lignin composite material proposed in Embodiment 1 of the present invention is as follows:

[0027] A: Dry high-purity lignin, polylactic acid, polybutylene succinate, and flame retardant triphenyl phosphite at 50°C for 12 hours to remove moisture;

[0028] B: The high-purity alkali lignin, polylactic acid, polybutylene succinate, flame ret...

Embodiment 2

[0036] Embodiment 2 of the present invention proposes a lignin composite material, which is mixed with lignin, polymer compound, fiber substance, chitin, plasticizer, compatibilizer, antioxidant and flame retardant Among them, the polymer compound is made of polypropylene and polybutyrate, the fiber material is made of jute fiber, the plasticizer is made of glycerin, the compatibilizer is made of polycaprolactone, and the antioxidant is made of four (β-(3,5 Di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester, flame retardant adopts antimony trioxide.

[0037]Specifically, the preparation method of the lignin composite material proposed in Embodiment 2 of the present invention is as follows:

[0038] A: Dry lignin, polylactic acid, polybutylene succinate, and flame retardant antimony trioxide at 60°C for 9 hours to remove moisture;

[0039] B: lignin, polylactic acid, polybutylene succinate, flame retardant antimony trioxide and plasticizer glycerin, compatibilize...

Embodiment 3

[0045] Embodiment 3 of the present invention proposes a lignin composite material, the lignin composite material is mixed by lignin, polymer compound, fiber substance, chitin, plasticizer, compatibilizer, antioxidant and flame retardant The polymer compound is made of polyethylene, the fiber material is made of carbon fiber, the plasticizer is made of diethyl phthalate, the compatibilizer is made of polyethylene-vinyl acetate, and the antioxidant is made of β-(3,5- Di-tert-butyl-4-hydroxyphenyl) cyclohexyl propionate, and trioctyl phosphate as flame retardant. The specific preparation method is as follows:

[0046] A: Dry lignin, polyethylene and flame retardant trioctyl phosphate at 70°C for 6 hours to remove moisture;

[0047] B: Dry lignin, polyethylene, flame retardant trioctyl phosphate, plasticizer diethyl phthalate, compatibilizer polyethylene-vinyl acetate, antioxidant β-(3 , 5-di-tert-butyl-4-hydroxyphenyl) cyclohexyl propionate is mixed uniformly in a high-speed bl...

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Abstract

The invention provides a lignin composite material and a preparation method thereof. The lignin composite material is formed by mixing lignin, a high molecular compound, a fiber substance, chitin, a plasticizer, a compatibilizer, an antioxidant and a flame retardant, wherein the lignin composite material comprises the following components in percentage by weight: 2.5 to 56.4 percent of lignin, 10 to 70.5 percent of high molecular compound, 2.5 to 16.92 percent of flame retardant, 0.5 to 7.52 percent of plasticizer, 0.5 to 9.4 percent of compatibilizer, 0.05 to 1.88 percent of antioxidant, 1 to 10 percent of chitin and 5 to 4 percent of fiber. The composite material is formed by compounding the lignin serving as a base material with at least one high molecular compound and gathering by fusion through a polymer, so the composite material has the advantages of low water absorption, high mechanical performance and degradability.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a lignin composite material and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the use of plastics is increasing, and it has penetrated into almost every aspect of people's lives. However, most of the currently used plastics are synthesized from petroleum resources and are non-degradable. Therefore, while consuming a large amount of petroleum resources, they also cause serious pollution to the environment. Natural polymers are rich in resources, renewable, and can be completely degraded. They are ideal substitutes for plastics, so they are welcomed by consumers and valued by governments of various countries. [0003] However, natural high molecular compounds generally have strong water absorption, so the composite materials made of natural high molecular compounds have strong water absorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/00C08L23/06C08L23/12C08L67/04C08L67/02C08L3/02C08L5/08C08K13/06
Inventor 张正光
Owner CHERY AUTOMOBILE CO LTD
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