详细信息

硬链段浓度对RIM交联聚氨酯结构和性能的影响    

Effect of Content of Hard Segment on Structures and Properties of RIM Crossl inking Polyurethanes

文献类型:期刊文献

中文题名:硬链段浓度对RIM交联聚氨酯结构和性能的影响

英文题名:Effect of Content of Hard Segment on Structures and Properties of RIM Crossl inking Polyurethanes

作者:张建元[1];王得宁[1];李迈进[1];胡春圃[1];应圣康[1]

机构:[1]华东化工学院材料科学研究所,上海200237

年份:1991

卷号:12

期号:11

起止页码:1547

中文期刊名:高等学校化学学报

外文期刊名:Chemical Journal of Chinese Universities

收录:CSTPCD;;Scopus;北大核心:【北大核心1992】;CSCD:【CSCD2011_2012】;

基金:国家自然科学基金

语种:中文

中文关键词:聚氨酯;交联;反应注射成型;结构

外文关键词:Reaction injection molding, Polyurethane, Microphase separation, Crosslinking

摘要:用l-MDI/1,4-BDO/PPO-EO快反应体系,考察硬段浓度对聚氨酯结构与性能的影响。发现样品的交联度、模量和抗张强度随硬段浓度增加而提高,交联趋向均匀,断裂伸长率在浓度30%处出现最大值。ATR-FTIR和DSC分析表明,微相分离程度随硬段浓度增大而降低。
The effect of content of hard segment on the structure and properties of RIM crosslinking polyurethane(l-MDI/l , 4-BDO/PPO-EO) has been studied. The results of equilibrium swelling, ATR-FTIR and DSC show that increasing the content of hard segment increases the degree of linkage ,and decreases the degree of microphase separation and ordering in the hard rich domains. By TEM, the phase separation phenomena on different levels, namely, macrophase separation and microphase separation were observed.

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