Liquid Crystalline Epoxy Resin Modified Cyanate Ester /Epoxy resin Systems

Yu Yingfeng; Gan Wenjun; Liu Xiaoyun; Li Shanjun; Xu Yuanze

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Liquid Crystalline Epoxy Resin Modified Cyanate Ester /Epoxy resin Systems

Yu Yingfeng 1 * #,Gan Wenjun 2,Liu Xiaoyun 2,Li Shanjun 2,Xu Yuanze 2

1.Key Laboratory of Molecular Engineering of Polymers of the Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.

2.Key Laboratory of Molecular Engineering of Polymers of the Ministry of Education, Department of Macromolecular Science, Fudan University

*Correspondence author

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Funding: 国家自然科学基金,教育部博士点基金新教师课题（No.20704008,20070246001）

Opened online:11 March 2008

Accepted by: none

Citation: Yu Yingfeng,Gan Wenjun ,Liu Xiaoyun .Liquid Crystalline Epoxy Resin Modified Cyanate Ester /Epoxy resin Systems [OL]. [11 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19199

Liquid crystalline epoxy resin (LCE) modify cyanate ester /epoxy resin blend systems were studied by scanning electron microscope, polarizing optical microscope, thermogravimetric analyzer, differential scanning calorimetry, thermal mechanical analysis and rheometers. With the addition of liquid crystalline epoxy resin, the blends showed both an enhanced curing rate and increased glass transition temperature of cured samples. The phase structures of the blends changed from homogenous to liquid crystalline phase when the content of LCE was increased. At the same time, the mechanical properties were also improved and thermal expansion coefficients were lowed down. The thermal degradation temperatures showed little differences while the residue char yields were slightly increased with the addition of LCE.

Keywords:liquid crystalline polymers; modification; thermosets

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