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Composite material and preparation method thereof

A technology of composite materials and raw materials, which is applied in the field of composite materials and their preparation, can solve the problems of poor toughness and heat resistance, and achieve the effects of improving compatibility, improving heat resistance, improving toughness and strength

Pending Publication Date: 2022-01-25
江西春光新材料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, the purpose of the present invention is to provide a kind of composite material and preparation method thereof, to solve the poor toughness and heat resistance of the composite material made by polylactic acid in the prior art

Method used

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Examples

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preparation example Construction

[0032] Among them, the preparation method of the above ethylenedic acid modified plant fiber includes the following steps:

[0033] Plant fibers and dichloromethane were added to the reactor and mixed well;

[0034] Ethylene acetate, silica, and ammonium oxide ethoxysilicil silicone were added to the reactor, stirred for 2 h;

[0035] The above reaction keena was warmed to 60 ° C, continued for 1 h, and after washing with deionized water, the filtered filtration was carried out, and the dihydrate modified plant fiber can be obtained.

[0036] Further, the above polyethylene glycol has an average molecular weight of 4500, and the polyethylene glycol is PEG-5000.

[0037] The compatible agent in this embodiment is polycaprolactone.

[0038] The lubricant in this embodiment is a polyethylene wax.

[0039] The particle diameter of the magnesium silicate powder in this embodiment is distributed between 200 nm.

[0040] The particle diameter of the aluminum silicate powder in this embod...

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Abstract

The invention provides a composite material and a preparation method thereof. The composite material is prepared from the following raw materials in percentage by weight: 70-80% of polylactic acid, 5-10% of polyethylene glycol, 3-5% of a compatilizer, 2-3% of a lubricant, 0.5-1% of magnesium silicate powder, 0.5-1% of aluminum silicate powder and 5-10% of oxalic acid modified plant fibers. The plant fibers are subjected to graft modification through oxalic acid, the interfacial compatibility between the plant fibers and polylactic acid is enhanced, the toughness and strength of polylactic acid compounding are greatly improved, the impact strength of polylactic acid is correspondingly improved, the interfacial bonding force between polylactic acid and the plant fibers is further improved by adding the compatilizer, and the heat resistance of the polylactic acid composite material is improved. The magnesium silicate powder, the aluminum silicate powder and the lubricant are added, so that the processing performance of the polylactic acid can be improved, the polylactic acid composite material has excellent organic matter degradation performance, and the degradation performance of the polylactic acid composite material is greatly improved.

Description

Technical field [0001] The present invention relates to the field of polylactic acid composites, and more particularly to a composite material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of science and technology, my country has also matured in the field of composite materials production technology. Among them, since PVC / PVDC, PCTEF / PVC, CFF, etc. have a good barrier effect, there is a wide range of applications in the fields of drugs, cosmetics, and food. [0003] Among them, polylactic acid (PLA) is a green material, which is made of fermentation product such as corn as a basic raw material. It has good biodegradability. After use, it can completely degrade the formation of carbon dioxide and water, and does not contaminate the environment. However, the common hard polylactic acid is brittle material, not impracting, making a film, if no orientation is difficult to meet the needs. Other properties, such as ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L71/02C08L97/02C08L63/00C08K3/34
CPCC08L67/04C08L2201/08C08L2201/06C08L2205/16C08L2205/08C08L71/02C08L97/02C08L63/00C08K3/34
Inventor 张友辉周德辉周发扬彭爱方熊小之
Owner 江西春光新材料科技股份有限公司
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