EFFECT OF HTPB STRUCTURE ON PREPOLYMER CHARACTERISTICS AND ON MECHANICAL-PROPERTIES OF POLYBUTADIENE-BASED POLYURETHANES

被引：31
|
作者：
VILAR, W
AKCELRUD, L
机构：
[1] UNIV FED RIO DE JANEIRO,INST QUIM,BR-21945 RIO JANEIRO,BRAZIL
[2] UNIV FED RIO DE JANEIRO,ESCOLA QUIM,BR-21945 RIO JANEIRO,BRAZIL
来源：
POLYMER BULLETIN | 1995年 / 35卷 / 05期
关键词：
D O I：
10.1007/BF00324119
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Oligobutadiene-based prepolymers and polyurethanes (PU) were prepared from hydroxyl terminated polybutadiene (HTPB), three diisocyanates (aromatic, alicyclic and aliphatic) and two chain extenders (containing hydroxyl or amino groups). The free NCO content in the prepolymers varied systematically and the characteristic of these products were interpreted in terms of NCO group reactivity, propagation reactions and HTPB functionality. The mechanical properties of the polyurethane elastomers derived from the prepolymers were discussed in terms of hard and soft segment structures.
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页码：635 / 639
页数：5
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