Polyamide compositions of improved toughness comprise a polyamide component comprising recurring aliphatic terephthalamide units and a modifying component comprising a functionalized block copolymer comprising styrene polymer blocks and rubber blocks comprising ethylene/propylene ethylene/butylene or ethylene/pentylene polymer blocks or a combination thereof.
韧性更高的聚酰胺组合物包括由重复脂肪族对苯二甲酰胺单元组成的聚酰胺组分和由
苯乙烯聚合物嵌段和
乙烯/
丙烯/
丁烯或
乙烯/
戊烯聚合物嵌段或其组合组成的橡胶嵌段组成的官能化嵌段共聚物组成的改性组分。