Different Soft Segment Length Polyether Sulfonamide Resins Containing Active Carboxyl Groups: Preparation and Properties

被引：0
|
作者：
Wen Y. [1 ]
Li D. [2 ]
Li H. [2 ]
Huang X. [3 ]
Yan G. [1 ]
Zhang G. [1 ,4 ]
机构：
[1] Institute of Materials Science and Technology, Analysis and Testing Center, Sichuan University, Chengdu
[2] Shaanxi Engineering Research Center of Special Sealing Technology, Xi’an Aerospace Propulsion Institute, Xi’an
[3] Chengdu Special Engineering New Material Co., Ltd, Chengdu
[4] State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2023年 / 39卷 / 03期
关键词：
friction coefficient; high temperature resistance; nucleophilic substitution; semi-aromatic polyether amide;
D O I：
10.16865/j.cnki.1000-7555.2023.0062
中图分类号：
学科分类号：
摘要：
Three kinds of difluoro- substituted long- chain ether amine monomers were synthesized from different length long-chain ether amines and p-fluorobenzoyl chloride by interfacial electrophilic substitution reaction. Then they were conducted to copolymerize with hydroquinone, 4,4’- dichlorodiphenylsulfone and 2- (bis (4- hydroxyphenyl) methyl) benzoic acid under atmospheric pressure to yield a series of novel polyarylene ether amide resins with different lengths and contents of fatty chain segments. The chemical structures of the monomers and copolymers were characterized by FT-IR and 1H-NMR. The results of differential scanning calorimetry (DSC), dynamic thermomechanical analysis (DMA) and thermogravimetric analysis (TGA) show that the resultant copolymers have excellent thermal properties, and the thermal properties can be adjusted to a certain extent by changing the type and copolymerization ratio of soft segments in molecular segments (with the glass transition temperature of 83.9~215.3 ℃, thermal decomposition temperature of 361.3~426.3 ℃); the tensile strength and elongation at break were characterized, and the tribological performance test show that the friction coefficient of these resultant copolymers is 0.50~0.60. The results show that these copolymers have good thermal, mechanical and friction properties, and they are expected to be used as special resin material in high temperature, wear-resistant and harsh environment. © 2023 Chengdu University of Science and Technology. All rights reserved.
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页码：26 / 33
页数：7
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