A new class of poly(ether-block-amide)s based on semi-aromatic polyamide: synthesis, characterization and structure-property relations

被引:18
作者
Tong, Xin [1 ]
Peng, Wei-Ming [1 ]
Zhang, Mei-Ling [2 ]
Wang, Xiao-Jun [2 ,3 ]
Zhang, Gang [2 ]
Long, Sheng-Ru [2 ]
Yang, Jie [2 ,4 ]
机构
[1] Sichuan Univ, Coll Polymer Sci & Engn, Chengdu, Peoples R China
[2] Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Peoples R China
[3] State Key Lab Organ Inorgan Composites, Beijing, Peoples R China
[4] Sichuan Univ, State Key Lab Polymer Mat Engn, Chengdu, Peoples R China
关键词
thermoplastic elastomer; semi-aromatic polyamide; thermal properties; poly(ethylene glycol); high-temperature performance; IN-SITU; THERMOPLASTIC ELASTOMERS; FACILE SYNTHESIS; COPOLYMERS; MORPHOLOGY; BEHAVIOR; POLYURETHANES; DEFORMATION; BLENDS; ETHER;
D O I
10.1002/pi.6119
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new type of poly(ether-amide) thermoplastic elastomer (TPAE) was synthesized using poly(decamethylene terephthalamide (10T)/decamethylene isophthalamide) as hard segment and poly(ethylene glycol) as soft segment via an efficient, accessible and low-pollution melt polymerization method. Thermoplastic elastomer was synthesized based on semi-aromatic polyamide for the first time. The effects of various compositions of hard segments on the thermal and mechanical properties were investigated. The results show that TPAE synthesized from semi-aromatic polyamide has excellent thermal stability, the initial decomposition temperature of all samples being between 370 and 378 degrees C. With an increase of 10T content, crystallization ability of the hard segment increased. As 10T content increased, TPAE changed from amorphous to crystalline, and the melting temperature ranged from 175 to 236 degrees C. Tensile testing revealed that TPAE had excellent and adjustable mechanical properties, and that tensile strength, elongation at break and elasticity modulus were in the ranges 7-40 MPa, 468-835% and 0.036-1.80 MPa. Furthermore, high-temperature tensile test results showed that TPAE-4 still maintained considerable mechanical properties, and had better mechanical properties compared with Pebax (R) 5533. In particular, TPAE-4 had higher performance decay point for which elasticity modulus and stress at epsilon= 500% decreased rapidly when the temperature was higher than 80 degrees C, this point for Pebax (R) 5533 appearing at 50 degrees C. Such outstanding performance indicated that this new class of elastomer has the potential to be used in high-temperature conditions. (c) 2020 Society of Industrial Chemistry
引用
收藏
页码:230 / 241
页数:12
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