私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

Links
Contact Info.
  • Address:上海市淞滬路2005號復旦大學江灣校區化學-高分子樓B5096辦公室
  • Zip:200438
  • Tel:021-31242829
  • Fax:021-31242829
  • Email:yfyu@fudan.edu.cn
Current Location :> Home > Publications > Text
Synthesis and characterization of a liquid crystalline epoxy containing azomethine mesogen for modification of epoxy resin
writer:Gao, Z. Y.; Yu, Y. F.; Xu, Y. Z.; Li, S. J.,
keywords:liquid crystal, thermoset, modification
source:期刊
specific source:Journal of Applied Polymer Science 2007, 105, (4), 1861-1868.
Issue time:2007年

A novel liquid crystalline epoxy monomer, 1,1'-bis [4-(2,3-epoxypropoxyphenyleneininomethyl)1-2,2'dimethylbiphenylene (BMPE) was synthesized and characterized by infrared (IR) and Nuclear magnetic resonance (NMR) spectroscopy. The effect of BMPE content on mechanical and thermal properties of its blends with Diglycidyl Ether of Biphenol A (DGEBA) was investigated. BMPE presented a Schlieren texture in the range of 150 to 215 degrees C as observed by differential scanning calorimeter (DSC) and polarizing optical microscope (POM). The improvement of mechanical properties of DGEBA modified with BMPE was achieved without sacrificing thermal resistance. Scanning electronic microscopy (SEM) graphs of fracture surfaces of the cured blends showed that microfiber-like structure formed in the cured blends, which would be a result of self-oriented alignment of azomethine mesogen component.