Miscible blends of polycarbonate with polyurethane elastomers
Miscible blends of polycarbonate with polyurethane elastomers
复制标题
聚碳酸酯与聚氨酯弹性体的混溶共混物
DOI：
10.1002/apmc.1993.052090111
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
J. Kolar̆ík
中科院分区：
文献类型：
--
作者：
L. Fambri;A. Penati;J. Kolar̆ík
基于脂肪族聚碳酸酯二醇和/或聚丙二醇的聚氨酯弹性体与聚碳酸酯形成可混溶的共混物，从而潜在地改善其对微裂纹引发和生长的抗性。至多20重量%通过溶液浇铸或熔融混合将合成的聚氨酯弹性体溶解在聚碳酸酯中。在由具有10至20重量%的水溶液浇铸的膜中检测到一些相分离。聚氨酯弹性体;这种共混物通常通过随后的热退火变成单相系统。在测试的聚氨酯弹性体中，基于甲苯二异氰酸酯和聚碳酸酯二醇与聚丙二醇的混合物的产品被发现是聚碳酸酯的有效改性剂;因此，它们也用于通过熔融混合制备的共混物和通过注射成型加工。
Polyurethane elastomers based on aliphatic polycarbonate diols and/or polypropylene glycols form miscible blends with polycarbonate, thus potentially improving its resistance to microcrack initiation and growth. Up to 20 wt.-% of synthesized polyurethane elastomers were dissolved in polycarbonate via solution casting or melt mixing. Some phase separation was detected in films cast from solutions with 10 to 20 wt.-% of polyurethane elastomers; such blends usually turned into single-phase systems by subsequent thermal annealing. Among the tested polyurethane elastomers, the products based on toulene diisocyanate and mixtures of polycarbonate diols with polypropylene glycols were found to be effective modifiers for polycarbonate; therefore, they were also used in the blends prepared by melt mixing and processed by injection moulding.