A kind of rapidly crystallized pbat material and preparation method thereof

A crystallization and rapid technology, applied in the field of biodegradable polymer material modification, can solve the problems of inability to increase the crystallization temperature and crystallization speed of PBAT materials, and achieve the effects of easy large-scale industrial production, improved processing efficiency, and improved mechanical properties.

Active Publication Date: 2020-04-17
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But none of these nucleating agents can increase the crystallization temperature and crystallization speed of PBAT materials, and neither have the effect of nucleating agents on PBAT crystallization

Method used

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  • A kind of rapidly crystallized pbat material and preparation method thereof
  • A kind of rapidly crystallized pbat material and preparation method thereof
  • A kind of rapidly crystallized pbat material and preparation method thereof

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preparation example Construction

[0028] The preparation method of the PBAT material with faster crystallization rate among the present invention comprises the following steps:

[0029] The PBAT material is obtained by blending polyadipate / butylene terephthalate (PBAT) and melamine / cyanuric acid complex as a nucleating agent through solution or melt method. Wherein, the mass percent content of the nucleating agent in the final product is 0.05%-5%.

[0030] The solution method blending means that the nucleating agent and PBAT are dissolved in chloroform or dichloromethane, so that the concentration of the polymer is 50g / L; after stirring at room temperature to dissolve the polymer and mix it uniformly, the polymer solution is cast In a polytetrafluoroethylene petri dish; the solvent was completely evaporated at room temperature, and then the polytetrafluoroethylene petri dish was dried in a vacuum oven at 60°C for 6 hours to obtain a PBAT material with a faster crystallization rate.

[0031] The melt blending ...

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Abstract

The invention relates to a modification technology of a biodegradable polymer material, and aims at providing a rapidly crystallized polybutylene adipate terephthalate (PBAT) material and a preparation method thereof. The material is a mixture consisting of polybutylene adipate terephthalate and a nucleating agent, wherein the mass percentage content of the nucleating agent in the mixture is 0.05-5%, the nucleating agent is a complex of melamine and cyanuric acid, and the molar ratio of the melamine to the cyanuric acid is 1:1. According to the invention, the melamine / trimer cyanamide complexis adopted as a nucleating agent to promote the crystallization of the PBAT, so that the crystallization speed and the mechanical property of the PBAT are greatly improved. The nucleating agent has low usage amount and good dispersity in the PBAT, and can effectively improve the crystallization velocity of the PBAT. According to the invention, the crystallization temperature of the PBAT can be improved, the crystallization speed can be improved, and then a PBAT film does not adhere to equipment during processing, so that the processing efficiency of the PBAT film is improved and the processingcost is reduced. The preparation process is simple, the production cost is low, the pollution is small, and large-scale industrial production is easy.

Description

technical field [0001] The invention relates to biodegradable polymer material modification technology, in particular to rapidly crystallized polybutylene adipate / terephthalate and a preparation method thereof. Background technique [0002] Polybutylene adipate / terephthalate (PBAT) is a biodegradable random copolymer formed by the polymerization of monomers of adipic acid, terephthalic acid and butanediol, which can be used in the production of Flexible films or food containers, etc. PBAT products are degradable in nature, a large number of microorganisms in the soil can decompose PBAT, and enzymes in bacteria and fungi in nature can also decompose it and return it to the natural environment, and PBAT and its degradation products are environmentally friendly and free of Poison is harmless. At the same time, PBAT has better melt stability when processed below 230 °C. PBAT itself has good tensile properties, can be made into micron-scale films, and has good barrier properti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K5/3492C08K5/3477C08J5/18
CPCC08J5/18C08J2367/02C08K5/3477C08K5/34922C08L2203/16C08L2205/24C08L67/02
Inventor 潘鹏举周健徐晨光单国荣包永忠王文俊
Owner ZHEJIANG UNIV
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