摘要
用ＷＡＸＤ和ＳＡＸＳ研究了一种新型的聚醚－聚酯－聚脲浇铸型弹性体的形态结构．ＷＡＸＤ的结果表明：用三种不同的二异氰酸酯，其硬段中的结晶度依次是ＨＤＩ＞ＭＤＩ＞ＴＤＩ．对于ＨＤＩ和ＭＤＩ混合合成的体系、由于与“Ｐｏｌａｍｉｎｅ”的反应速度不同，形成三相体系．ＳＡＸＳ的结果表明：增加“Ｐｏｌａｍｉｎｅ”分子量，有利于软、硬段的微相分离．对于不同的二异氰酸酯，相分离度依次是ＨＤＩ＞ＭＤＩ＞ＴＤＩ．
WAXD and SAXS were used to study the morphology structure of a new type polyether-polyester-polyurea cast elastomer.The WAXD result shows that the crystallinity in its hard segments is in the order of HDI M MDI M TDI by using three different diisocyanates.As for the mixd synthesis series of HDI and MDI,three phases morphology are formed due to the quite different reaction rates with 'polamine'.The SAXS result shows that the increasment of 'polamine' molecular weight is favourable for the phase separation of soft and hard segments. For different diisocyanates,the degree of phase separation is also in the order of HDI>MDI>TDI.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1995年第3期264-270,共7页
Acta Polymerica Sinica
关键词
聚醚
聚酯
聚脲
结晶度
相分离度
形态结构
Polyether-polyester-polyurea,Crystallinity,Degree of phase separation,Interfacial thickness
