聚丙烯/含锌聚醚酯酰胺共混纤维的结构与性能

以氧化锌、己二酸、聚己二醇、己内酰胺和二苯甲烷二异氰酸酯(MDI)为原料制备含锌聚醚酯酰胺(M-PEEAM)。将聚丙烯(PP)与M-PEEAM共混制备PP/M-PEEAM共混物及其纤维,研究了PP/M-PEEAM共混物的热性质,考察了PP/M-PEEAM共混纤维的结构与力学性能。结果表明:PP/M-PEEAM共混物在166～167℃附近有大的吸热峰,在50℃和218℃附近有2个小吸热峰,多峰效应表明PP和M-PEEAM为不相容体系,M-PEEAM含量对PP/M-PEEAM共混物熔点影响不大;PP/M-PEEAM共混物具有两相结构,M-PEEAM呈球形分布在PP基体之中,M-PEEAM含量增加,球的直径增大,长度增加。PP/M-PEEAM共混纤维的断裂强度随着M-PEEAM含量增加而减小。

Structure and properties of polypropylene/zinc-containing polyether ester amide blend fiber

Polyether ester amide containing zinc(M-PEEAM)was prepared from zinc oxide,hexanedioic acid,polyethylene glycol,caprolactam and methylene dipbenyl diisoeyanate(MDI)as raw material.Polypropylene(PP)was blended with M-PEEAM to prepare PP/M-PEEAM blend and fiber.The thermal behavior of PP/M-PEEAM blend was studied.The structure and mechanical properties of PP/M-PEEAM blend fiber were investigated.The results showed that the PP/M-PEEAM blend had a big endothermic peak at 166 - 167℃ and two small endothermie peaks at 50℃ and 218℃,respectively.The appearance of multiple peaks indicated that PP is incompatible with M-PEEAM and the M-PEEAM content had no much effect on the melting point of PP/M-PEEAM blend.PP/M-PEEAM blend had a two-phase structure.M-PEEAM had a spherical distribution in PP matrix.The diameter and the length of the sphere was increased and the breaking strength of PP/M-PEEAM blend fiber was decreased with the increase of M-PEEAM content.