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    宗立率

    • 副教授     博士生导师   硕士生导师
    • 任职 : 院长助理
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:化工学院
    • 学科:高分子材料. 高分子化学与物理
    • 办公地点:西部校区化工实验楼A段304室
    • 电子邮箱:zongls@dlut.edu.cn

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    Interaction and properties of epoxy-amine system modified with poly(phthalazinone ether nitrile ketone)

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    论文类型:期刊论文

    发表时间:2016-03-10

    发表刊物:JOURNAL OF APPLIED POLYMER SCIENCE

    收录刊物:SCIE、EI、Scopus

    卷号:133

    期号:10

    ISSN号:0021-8995

    关键字:blends; crosslinking; properties and characterization; structure-property relations; thermal properties

    摘要:An epoxy based on the tetraglycidyl 4,4'-diaminodiphenyl-methane (TGDDM)/bisphenol A type novolac(F-51) cured with 4,4'-diaminidiphenysulfone (DDS) has been modified with Poly (phthalazinone ether nitrile ketone)(PPENK). The interaction between the PPENK and epoxy resin have been investigated by differential scanning calorimetry (DSC), FT-IR, and dynamic mechanical analysis (DMA). The thermal and mechanical properties were characterized by thermogravimetric analysis (TGA), thermomechanical analysis (TMA), flexural, impact strength, and the critical stress intensity factor tests. The results showed that a large number of physical crosslinks formed by intermolecular and intramolecular hydrogen bonding indeed existed in the TGDDM/F-51/PPENK blends. These interactions gave good compatibility between PPENK and epoxy resin. So that any phase separation had not been detected by DMA and scanning electron microscope (SEM). Beyond that the interaction could also be a benefit to the thermal and mechanical properties. Compared with the neat epoxy resin, the critical stress intensity factor values reached the maximum at 10-phr PPENK, as well as the impact strength. (C) 2015 Wiley Periodicals, Inc.