Study on T700/Cyanate/PS/Epoxy Composites with ex-situ Toughening Technique
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第4期
论文作者：郑亚萍 WANG Hao ZHANG Jiaoxia XU Yahong DAI Feng WANG Jihui
文章页码：674 - 678
摘 要：Composites were prepared with polysulfone through ex-situ toughening technique. The dynamic parameters of cyanate/epoxy resin were studied by differential scanning calorimetric（DSC） analysis and dynamic mechanical analysis（DMA）. Microstructual toughening mechanism was studied through scanning electron microscopy（SEM）. The particle microstructure in interlaminar region of composites toughened through ex-situ toughening technique revealed that a reaction induced phase decomposition and phase inversion happened in the interlaminar region. The thermosetting particles were surrounded by the PS phase, which could signifi cantly improve the delamination resistance of composites. The compression after impact（CAI） can be signifi cantly improved from 180 MPa to 260 MPa by using ex-situ toughening while the mechanical properties are not affected.
郑亚萍1，WANG Hao2，ZHANG Jiaoxia3，XU Yahong4，DAI Feng4，WANG Jihui2
1. Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University2. School of Materials Science and Engineering, Wuhan University of Technology3. School of Materials Science and Engineering, Jiangsu University of Science and Technology4. Aerospace Research Institute of Special Materials and Processing Technology
摘 要：Composites were prepared with polysulfone through ex-situ toughening technique. The dynamic parameters of cyanate/epoxy resin were studied by differential scanning calorimetric（DSC） analysis and dynamic mechanical analysis（DMA）. Microstructual toughening mechanism was studied through scanning electron microscopy（SEM）. The particle microstructure in interlaminar region of composites toughened through ex-situ toughening technique revealed that a reaction induced phase decomposition and phase inversion happened in the interlaminar region. The thermosetting particles were surrounded by the PS phase, which could signifi cantly improve the delamination resistance of composites. The compression after impact（CAI） can be signifi cantly improved from 180 MPa to 260 MPa by using ex-situ toughening while the mechanical properties are not affected.
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