Properties of Polyurethane Elastomers with Norbornanediisocyanate
Properties of Polyurethane Elastomers with Norbornanediisocyanate
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含降冰片烷二异氰酸酯的聚氨酯弹性体的性能
DOI：
10.2324/gomu.75.39
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Okamoto
中科院分区：
文献类型：
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作者：
S. Inoue;M. Kondo;S. Nakakita;H. Shirasaka;H. Okamoto
以降冰片烷二异氰酸酯（NBDI）和聚氧四亚甲基二醇（PTMG）为原料合成了聚氨酯弹性体（PUE），并与异佛尔酮二异氰酸酯（IPDI）和4，4 ' -亚甲基双（环己基异氰酸酯）（HMDI）为原料合成的PUE的玻璃化转变温度（Tg）和粘弹性随温度的变化进行了比较。由NBDI和PTMG（数均分子量为1000）制备的PUE的Tg为49°C，比IPDI低8 °C，具有优良的上级低温性能。另外，在高温下，含NBDI的PUE的储能模量（E '）在橡胶态流动区缓慢下降，并保持在高于HMDI和IPDI的温度下，橡胶态平台区在较宽的温度区保持不变。（2001年3月21日接收）（2001年9月13日接受）关键词：2，5-和/或2，6-双（异氰酸酯基甲基）-双环[2，2，1]庚烷，降冰片烷二异氰酸酯，NBDI，Aucyclic异氰酸酯，聚氨酯，玻璃化转变
Polyurethane elastomer (PUE) was prepared from norbornanediisocyanate(NBDI)and poly (oxytetramethylene) glycol (PTMG), and the glass transition temperature (Tg) by DSC and the temperature dependence of viscoelasticity were compared with those of PUEs using isophorone diisocyanate (IPDI) and 4,4' -methylene bis (cyclohexyl isocyanate) (HMDI). Tg of PUE prepared from NBDI and PTMG (number average molecular weight, 1000) was 49°C, it was 8 °C lower than that of IPDI possessing superior low temperature characterisitics. Additionally, in elevated temperature, storage modulus (E') of the PUE with NBDI decreased slowly at rubbery flow region and was kept at higher temperature than that of HMDI and IPDI, and the rubbery plateau was kept constant at the wide temperature region. (Received on March 21, 2001) (Accepted on September 13, 2001) Key Word : 2, 5-and/or 2, 6-bis (isocyanatomethyl)-bicyclo [2, 2, 1] heptane, Norbornanediisocyanate, NBDI, Aucyclic isocyanate, Polyurethane, Glass transition