POLYURETHANE-MODIFIED POLYESTER SEMI-INTERPENETRATING NETWORKS

被引:29
作者
HOURSTON, DJ
ZIA, Y
机构
[1] Department of Chemistry, University of Lancaster, Lancaster
关键词
D O I
10.1016/0032-3861(79)90015-6
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Four semi-interpenetrating polymer network materials based on a methyl acrylate modified crosslinked polyester and a polyurethane were synthesized and their dynamic mechanical and stress-strain properties were investigated. The tan δ-temperature dispersion of the semi-interpenetrating polymer network containing 70% polyurethane showed two maxima, while at 60% polyurethane a distinct shoulder is again to be seen at around the polyurethane glass transition temperature. At 30% and 50% by weight of polyurethane single, but rather broad, transitions occurred, despite the fact that at 30% and 60% polyurethane electron micrographs indicated a two-phase morphology. The stress at break was found to decrease approximately linearly with rubber content up to about 70% by weight. © 1979.
引用
收藏
页码:1497 / 1500
页数:4
相关论文
共 21 条