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 °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 °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® 5533. In particular, TPAE‐4 had higher performance decay point for which elasticity modulus and stress at ε = 500% decreased rapidly when the temperature was higher than 80 °C, this point for Pebax® 5533 appearing at 50 °C. Such outstanding performance indicated that this new class of elastomer has the potential to be used in high‐temperature conditions. © 2020 Society of Industrial Chemistry

中文翻译：

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基于半芳族聚酰胺的新型聚醚嵌段酰胺：合成，表征和结构-性质关系

以聚（十甲基对苯二甲酰胺（10T）/十亚甲基间苯二甲酰胺）为硬链​​段，聚乙二醇（为乙二醇）为软链段，通过高效，易获得且低污染的方式合成了新型的聚醚酰胺热塑性弹性体（TPAE）熔融聚合法。热塑性弹性体是首次基于半芳族聚酰胺合成的。研究了硬链段的各种组成对热和机械性能的影响。结果表明，由半芳族聚酰胺合成的TPAE具有出色的热稳定性，所有样品的初始分解温度为370至378°C。随着10T含量的增加，硬链段的结晶能力增加。随着10T含量的增加，TPAE从无定形变为结晶，熔融温度为175至236℃。拉伸测试表明TPAE具有出色的可调节机械性能，拉伸强度，断裂伸长率和弹性模量分别在7-40 MPa，468-835％和0.036-1.80 MPa范围内。此外，高温拉伸试验结果表明，与Pebax®5533相比，TPAE-4仍保持相当的机械性能，并具有更好的机械性能。特别是，TPAE-4具有更高的性能衰减点，其弹性模量和应力在当温度高于80°C时，ε = 500％迅速下降，这一点在5°C时出现于5533。如此出色的性能表明，这种新型的弹性体具有在高温条件下使用的潜力。©2020工业化学学会