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Rapid crystallization polyester material, preparation method and application thereof

A polyester material, polyester technology, applied in the field of rapid crystallization polyester material and its preparation, can solve the problems of material mechanical properties decrease, ester polymer molecular weight decrease, etc., achieve low cost, strong hydrogen bond, and improve crystallization degree of effect

Active Publication Date: 2020-12-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of organic carboxylates will lead to a decrease in the molecular weight (degradation) of the ester polymer, resulting in a decrease in the mechanical properties of the material.

Method used

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  • Rapid crystallization polyester material, preparation method and application thereof
  • Rapid crystallization polyester material, preparation method and application thereof
  • Rapid crystallization polyester material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In a 500mL three-neck flask, add 15mL of diethyl oxalate, 200mL of ethanol, and 45mL of ethanolamine, react at room temperature for 24h, filter to obtain the solid component, wash with ethanol several times, and then dry in a vacuum oven for 24h to obtain an organic nucleation compound for polyester Agent N 1 , N 2 - Bis(2-hydroxyethyl)oxamide, i.e.:

[0069]

[0070] Such as figure 1 Shown is the nuclear magnetic hydrogen spectrum of the nucleating agent obtained in this embodiment, 1 H NMR (400 MHz, DMSO) 8.5 (t, 2H), 4.75 (t, 2H), 3.45 (q, 4H), 3.21 (q, 4H). It is proved that the obtained product is indeed the nucleating agent represented by the above structural formula.

Embodiment 2

[0072] In a 500mL three-necked flask, add 15mL of diethyl oxalate, 200mL of ethanol, and 45mL of butanolamine, react at room temperature for 24 hours, filter to obtain the solid component, wash it with ethanol several times, and then dry it in a vacuum oven for 24 hours to obtain an organic compound for polyester. Nucleating agent N 1 , N 2 - Bis(4-hydroxybutyl)oxamide, namely:

[0073]

[0074] Such as figure 2 Shown is the nuclear magnetic hydrogen spectrum of the nucleating agent obtained in this embodiment, 1 H NMR(400MHz,DMSO)δ8.70(t,2H),4.39(t,2H),3.38(q,4H),3.13(q,4H),1.69(m,4H),1.45(m,4H) . It is proved that the obtained product is indeed the nucleating agent represented by the above structural formula.

Embodiment 3

[0076] In a 500mL three-neck flask, add 15mL of diethyl oxalate, 200mL of ethanol, and 45mL of ethanolamine, react at room temperature for 24 hours, filter to obtain the solid component, wash it with ethanol several times, and then dry it in a vacuum oven for 24 hours to obtain an organic compound for polyester. Nucleating agent N 1 , N 2 - Bis(6-hydroxyhexyl)oxamide, i.e.:

[0077]

[0078] Such as image 3 Shown is the nuclear magnetic hydrogen spectrum of the nucleating agent obtained in this embodiment, 1 H NMR (400MHz, DMSO) δ8.69(t,2H),4.33(t,2H),3.37(q,4H),3.11(q,4H),1.57–1.31(m,8H),1.31–1.08( m, 8H). It is proved that the obtained product is indeed the nucleating agent represented by the above structural formula.

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Abstract

The invention discloses a rapid crystallization polyester material, a preparation method and application thereof, and belongs to the technical field of high polymer materials. The structural formula of an organic nucleating agent is HO-R1-NH-C(O)-C(O)-NH-R1-O or HO-R2-NH-C(O)-C (O)-NH-R3-NH-C(O)-C(O)-NH-R2-OH, and the organic nucleating agent can be used for promoting rapid nucleation of polyester, has good compatibility with polyester polymers, can realize uniform dispersion in polymer melts, and even realizes thermodynamic compatibility at high temperature. In the cooling process, crystals can be formed through intermolecular hydrogen bond self-assembly, the effect of rapid nucleation and crystallization can be achieved by adding a small amount of the crystals, and the crystallinity of the polymer can be improved; the obtained polyester material has the characteristics of high crystallization temperature, high crystallization rate, short semi-crystallization time and the like, the molding period can be shortened, the cost can be reduced, the performance can be improved, and the preparation method is simple, environment-friendly and easy to realize industrialization. The materialcan be widely applied to the fields of packaging, spinning, medical consumables, disposable plastic products or agriculture, and has a wide prospect.

Description

technical field [0001] The invention relates to a rapid crystallization polyester material and its preparation method and application, belonging to the technical field of polymer materials. Background technique [0002] Polyester materials have a very broad application prospect in various fields due to their outstanding advantages such as environmental protection, wide source of raw materials, convenient processing, and light weight. However, polyester materials also have some inherent shortcomings (such as low material strength, poor heat resistance, and poor crystallization properties) that limit their wider development and application, especially as engineering materials. At present, there are mainly methods for improving the crystallization rate of polymers: blending methods, such as adding other high polymers (such as nylon) to improve crystallization properties. This method requires the introduction of high content of other polymer components which may change the orig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K5/20C08L91/00C08L67/02C07C231/02C07C231/14C07C233/56
CPCC08K5/20C08L67/04C08L67/02C07C231/02C07C231/14C08L2205/24C08L91/00C07C233/56
Inventor 马丕明余鳗漫徐鹏武杨伟军潘锦涛陈明清白绘宇
Owner JIANGNAN UNIV