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A kind of rapid crystallization bio-based polyester composition and preparation method thereof

A composition and polymer technology, applied in the field of rapid crystallization of bio-based polyester composition and its preparation, can solve the problems of toxicity, limitation of nucleation effect, etc., and achieve the effects of low cost, simple process and shortened crystallization cycle

Active Publication Date: 2015-11-25
上海英华辰睿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The European Patent Publication No. EP12155715.1. discloses a linear organic nucleating agent containing two oxalamide groups, which promotes the crystallization process of bio-based polyester, but this type of nucleating agent is not stable in the bio-based polyester matrix. Only one-dimensional structure can be formed in , which limits the nucleation effect to a certain extent
European Patent Nos. EP1477526A1 and EP1795560A1 disclose a nucleating agent containing polyamide groups for polylactic acid, but the synthetic raw material hydrazide of the nucleating agent is toxic

Method used

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  • A kind of rapid crystallization bio-based polyester composition and preparation method thereof
  • A kind of rapid crystallization bio-based polyester composition and preparation method thereof
  • A kind of rapid crystallization bio-based polyester composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] First dry PLA (4032D) 50g, N 1 ,N 1' ,N 1″ -(1,2,3-propanetriamino)-tri-N 2 - 0.15 g of phenyl trioxalamide was uniformly mixed at room temperature to obtain a premix, and then the above premix was melt-blended by a torque rheometer at 180 ° C for 5 minutes, and the rotor speed of the torque rheometer was 50 rpm to obtain a A biobased polyester composition.

Embodiment 2-3

[0056] The preparation method and component of bio-based polyester composition in embodiment 2 and 3 are identical with embodiment 1, and difference is that in embodiment 2 and 3 N 1 ,N 1' ,N 1″ -(1,2,3-propanetriamino)-tri-N 2 -Phenyl trioxalamide consumption is respectively 0.25g and 0.40g.

Embodiment 4-6

[0066] The preparation method of the bio-based polyester composition in Example 4-6, the weight ratio of PLA (4032D) and nucleating agent in the bio-based polyester composition are the same as in Example 3, except that in Example 4- The nucleating agents used in 6 are N 1 ,N 1' ,N 1″ -(1,2,3-propanetriamino)-tri-N 2 - Ethyl acetate trioxalamide, N 1 ,N 1' ,N 1″ -(1,3,5-Triaminocyclohexyl)-tri-N 2 -Benzyltrioxalamide and N 1 ,N 1' ,N 1″ -(1,3,5-Benzenetriamino)-tri-N 2 - Cyclohexyltrioxalamide.

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Abstract

The invention discloses a bio-based polyester composition which mainly consists of a bio-based polyester and an organic nucleating agent in parts by weight, wherein the organic nucleating agent is at least one of compounds with the chemical structural formula as shown in the specification, and R1, R2, R3 and R4 are respectively and independently selected from alkyl or alkyl containing substituent groups. The bio-based polyester composition prepared by the preparation method provided by the invention has the characteristics of high crystallization temperature, high crystallization speed, short semi-crystallization time and the like, the molding cycle can be obviously shortened, the molding efficiency is improved, and the preparation method is simple and environment-friendly and is easy for realization industrialization.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a crystallization nucleating agent for bio-based polyester, a rapidly crystallizing bio-based polyester composition and a preparation method thereof. Background technique [0002] With the increasing shortage of energy and the deteriorating environment, bio-based polymer materials, especially bio-based polyesters, have attracted much attention. Lactic acid polymers (PLA) and hydroxyalkanoate polymers (PHA) are two important classes of bio-based polyesters that have been commercialized. PLA can be polymerized from lactic acid monomers obtained by fermentation of non-grain starch, mainly including poly-L-lactic acid (PLLA), poly-D-lactic acid (PDLA) and lactic acid copolymer (LA-co-X). The lactic acid copolymer is formed by copolymerizing L-lactic acid or D-lactic acid and other monomers. PHA can be directly synthesized by biotechnology in cells by selecting appropriate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K5/20
Inventor 马丕明许允生陈明清东为富王大伟
Owner 上海英华辰睿新材料有限公司
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