摘要
α-甲氧基-ω-N-异丙醇基-对苯甲胺基聚乙二醇(PO-p-MPEGBA)和酚醛环氧树脂F51反应制备了PEG接枝环氧树脂化合物(PEGF51)。用红外光谱和凝胶渗透色谱(GPC)分析了PEGF51的结构,通过动态力学性能测试研究了聚乙二醇链段分子量(PEM)以及在环氧树脂交联网络中的键接方式对聚合物动态力学性能的影响规律。结果表明,将PEG链段以化学键接的方式引入到环氧树脂交联网络中制备了接枝型聚合物(PEGF51/m-XDA)和交联型聚合物(F51-PMAPEG)。发现PEG链段以支链的方式悬挂于环氧树脂交联网络结构中,PEGF51/m-XDA接枝型聚合物的阻尼性能得到明显提高。PEM=800时,PEG接枝型聚合物阻尼因子(tanδ)≥0.3的有效阻尼温域达到52℃。
Polyethylene glycol grafted epoxy resins （PEGF51） were prepared using a-methoxy-co-N- isopropanol-para-phenylmethylamino polyethylene glycol （PO-p-MPEGBA） and novolac epoxy resin （F51）. The structure of PEGF51 was characterized by infrared spectroscopy and gel permeation chromatography （GPC）. Dynamic mechanical properties of PEGF51 cured with m-xylene-diamine （m-XDA） and novolac epoxy resin （F51） cured with PMAPEG were investigated considering polyethylene glycol segment molecular （MPE） and bonding type as affecting factors. The results show that homogeneous polymers without nanophase separation are available by chemically incorporating poly（ethylene glycol） segments into epoxy resin networks. Damping properties of PEGF51/m-XDA （PEG segments were grafted on epoxy resin chains） were significantly improved. This PEG-grafted polymer exhibits great potential at MPE = 800, and the effective damping temperature is up to 52℃ for loss factor （tanδ）≥0.3.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2016年第4期940-945,共6页
Journal of Chemical Engineering of Chinese Universities
基金
国防科工军品配套项目(JPPT-125-2-168)
关键词
氨基聚醚
环氧树脂
阻尼性能
聚乙二醇
微相分离
amine-terminated polyether
epoxy resin
damping properties
polyethylene glycol
nanophase separation
