期刊论文

中文

聚氨酯工业

1005-1902

2007

22

2

8-11

10.3969/j.issn.1005-1902.2007.02.003

本校为第一机构

分别用甲苯二异氰酸酯（TDI）和六亚甲基二异氰酸酯（HDI）与蓖麻油（CO）反应制备出两种聚氨酯预聚体，再用预聚体与苯乙烯、丙烯腈、甲基丙烯酸甲酯、环氧树脂（E-44或E-51）等单体制备出蓖麻油聚氨酯互穿网络型聚合物（CO-PU IPN），研究了体系组成对该聚合物拉伸强度的影响。结果表明，随着固化时间的延长，CO-PU IPN的拉伸强度逐渐增大，TDI型CO-PU IPN比HDI型的拉伸强度大；烯类单体比环氧树脂单体所制CO-PU IPN的拉伸强度大，不同烯类单体之间的差别不大；增加预聚体中NCO／OH的摩尔比，CO-PU IPN的拉伸强度都是先增加，后减小，在摩尔比为2．25时出现最大值；添加抗氧剂1010、紫外光吸收...

Two kinds of polyurethane prepolymer were synthesized by the reacting of toluene diisocyanate （TDI）, hexamethylene diisocyanate （HDI） with castor oil. The prepolymers were mixed with cross-linkers （phenylethylene, Acrylonitrile, methyl methacrylate and epoxy resin E-44, E-51 ） , and form interpenetrating polymer networks （CO-PU IPN）. Effects of the system composition on the tensile strength of CO-PU IPN were studied . With the curing time increasing, the results showed that CO-PU IPN synthesized from TDI exhibited better tensile strengt...