摘要
用甲苯二异氰酸酯（ＴＤＩ）、端羟基聚丁二烯齐聚物（－Ｍｎ＝２６１０，－ｆｎ＝２．０）和不同的扩链剂，采用溶液二步法合成了不同硬段结构的聚丁二烯聚氨酯弹性体。用电子拉力机研究了弹性体的弹性性能和应力应变关系，用ＳＥＭ研究弹性体应力断裂的断口形态。
few series of polybutadiene based poyurathane elastomers were synthesized from hydroxy teminated polybutadiene oligomers (AM-U=2610,Af-Un=2.0),toluene diisocyanate and different structure exteners by solution tow step method.Mechanical properies and break surface were studied using AG-A mode electron testing machines and SEM.
出处
《弹性体》
CAS
1997年第4期10-13,共4页
China Elastomerics
关键词
扩链剂
聚氨酯弹性体
力学性
聚丁二烯
橡胶
Extender
Plyurathane elastomers
Mechanical porperties
Break surface
