摘要
以端羟基聚丁二烯-丙烯腈(HTBN)、甲苯二异氰酸酯(TDI)、扩链剂2,4/2,6-二氨基-3,5-二甲硫基甲苯(DMTDA)为原料,加入化学交联剂过氧化二异丙苯(DCP)和助交联剂N,N-间苯撑双马来酰亚胺(HAV-2)制备出不同硬段含量、不同交联密度的聚氨酯弹性体(PUE),研究了硬段含量、交联密度和温度对PUE结构与性能的影响。结果表明,当NCO质量分数为9%,HVA-2加入量为1.5%时,邻接交联型PUE综合力学性能最优。邻接交联型PUE的热稳定性得到明显提高。随着HVA-2的加入,损耗因子tanδ减小。
The different hard segment content, cross-linking density adjacency cross-linked polyurethane elastomers （PUE） was prepared with hydroxyl-terminated liquid butadiene-nitrile （HTBN）, toluene diisocyanate （TDI）, chain extender 3,5-dimethyl thio-toluene diamine （DMTDA） as raw materials and initiator dicumyl perox- ide （DCP） and cross-linking agent N,N＇-m-phenylene dirnaleimide（HVA-2）. The effects of hard segment content, the cross-linkihg density and temperature on PUE structure and properties were studied. The results showed that the mechanical properties of PUE achieved optimal when NCO was 9% and HVA-2 content was 1.5%. The thermal stability of adjacency crosslinked PUE was improved significantly. With the addition of HVA-2, the loss factor tang decreased.
出处
《聚氨酯工业》
2013年第4期24-27,共4页
Polyurethane Industry
基金
国家自然科学基金(21176126)
关键词
HTBN
PUE
邻接交联
HVA-2
性能
HTBN
PUE
adjacency cross-linked
N,N＇-m-phenylene dimaleimide
property
