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Preparation method and application of humin acid based poly (lactic acid) crystallization nucleating agent and material

A crystallization nucleating agent, polylactic acid technology, applied in the field of polylactic acid polymer materials, can solve the problems of low heat resistance, poor toughness, low polylactic acid crystallinity, etc., to achieve degradation performance and heat resistance expansion, excellent mechanics The effect of high performance and crystallization performance

Active Publication Date: 2018-11-06
XINJIANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a preparation method and application of humic acid-based polylactic acid crystallization nucleating agent and polylactic acid composite material, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of low crystallinity and low heat resistance of polylactic acid Problems with poor sex and toughness

Method used

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  • Preparation method and application of humin acid based poly (lactic acid) crystallization nucleating agent and material
  • Preparation method and application of humin acid based poly (lactic acid) crystallization nucleating agent and material
  • Preparation method and application of humin acid based poly (lactic acid) crystallization nucleating agent and material

Examples

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Embodiment 1

[0030] Embodiment 1: The polylactic acid crystallization nucleating agent based on humic acid, raw material comprises humic acid, carbonyldiimidazole, hydrochloric acid, pyridine and amines, the mass ratio of humic acid, carbonyldiimidazole and amines is 1 to 10:1 to 5: 1 to 10, the amount of hydrochloric acid added is 0.5% to 5% of the mass of humic acid, and the amount of pyridine added is 0.5% to 5% of the mass of humic acid.

Embodiment 2

[0031] Embodiment 2: the polylactic acid crystallization nucleating agent based on humic acid, raw material comprises humic acid, carbonyldiimidazole, hydrochloric acid, pyridine and amines, the mass ratio of humic acid, carbonyldiimidazole and amines is 1 or 10:1 or 5:1 or 10, the amount of hydrochloric acid added is 0.5% or 5% of the mass of humic acid, and the amount of pyridine added is 0.5% or 5% of the mass of humic acid.

Embodiment 3

[0032] Embodiment 3: the polylactic acid crystallization nucleating agent based on humic acid described in the foregoing examples is obtained by the following method: the first step, after dissolving the required amount of carbonyldiimidazole in tetrahydrofuran, obtains carbonyldiimidazole tetrahydrofuran solution; After adding the required amount of humic acid in the diimidazole tetrahydrofuran solution, the intermediate product is obtained; the second step is to add the required amount of hydrochloric acid and pyridine to the intermediate product, and then add the required amount of amines to stir the reaction to obtain the reaction product; the third The first step is to add distilled water to the reaction product for ultrasonic oscillation, and then filter and dry to obtain a solid product; the fourth step is to add the solid product to an organic solvent for ultrasonic oscillation to obtain a mixture, and the mixture is filtered and vacuum-dried to obtain Humic acid based ...

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Abstract

The invention relates to the technical field of poly (lactic acid) polymer materials, in particular to a preparation method and application of a humin acid based poly (lactic acid) crystallization nucleating agent and a poly (lactic acid) composite material. The humin acid based poly (lactic acid) crystallization nucleating agent is prepared from the humin acid, carbonyl diimidazole, hydrochloricacid, pyridine and amines. With the humin acid based poly (lactic acid) crystallization nucleating agent, mechanical property, heat resistance, crystallization performance and degradation velocity ofthe poly (lactic acid) composite material are obviously improved, the poly (lactic acid) composite material is excellent in mechanical property, heat resistance, crystallization performance and high in degradation velocity, and the application range of the poly (lactic acid) composite material can be well expanded due to the good mechanical property, degradation performance and heat resistance; the poly (lactic acid) composite material is prepared by using twin-screw extrusion equipment, so that simpleness in technology, short production circle and low production cost are achieved.

Description

technical field [0001] The invention relates to the technical field of polylactic acid polymer materials, and relates to a polylactic acid crystallization nucleating agent based on humic acid, its preparation method, its application in the preparation of antibacterial drugs, and its simultaneous improvement of the mechanical properties of polylactic acid composite materials , application in heat resistance, degradation rate and crystallinity; also includes a polylactic acid composite material using a polylactic acid crystallization nucleating agent based on humic acid as a nucleating agent and a preparation method thereof. Background technique [0002] At present, with the continuous improvement of living standards, countries around the world are increasingly dependent on traditional plastics that use petroleum as raw materials. However, the non-recyclability of petroleum-derived plastics will lead to waste plastic products that cannot be degraded, causing environmental pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/00C08K5/3445C08K5/3432C08K5/17C08L67/04
CPCC08K5/17C08K5/3432C08K5/3445C08L67/04C08L97/005C08L2201/08C08L2203/16C08L2205/24
Inventor 甄卫军徐晓康刘攀余
Owner XINJIANG UNIVERSITY
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