NAME

蹇锡高

Paper Publications

Self-curing triphenol A-based phthalonitrile resin precursor acts as a flexibilizer and curing agent for phthalonitrile resin
  • Hits:
  • Indexed by:

    期刊论文

  • First Author:

    Hu, Yue

  • Correspondence Author:

    Weng, ZH (reprint author), Dalian Univ Technol, Dept Polymer Sci & Mat, Liaoning High Performance Resin Engn Res Ctr, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

  • Co-author:

    Weng, Zhihuan,Qi, Yu,Wang, Jinyan,Zhang, Shouhai,Liu, Cheng,Zong, Lishuai,Jian, Xigao

  • Date of Publication:

    2018-01-01

  • Journal:

    RSC ADVANCES

  • Included Journals:

    SCIE

  • Document Type:

    J

  • Volume:

    8

  • Issue:

    57

  • Page Number:

    32899-32908

  • ISSN No.:

    2046-2069

  • Abstract:

    Major problems currently limiting the widespread application of phthalonitrile resins are the high precursor melting point and volatility of the curing agent. Herein, a novel self-curing triphenol A-based phthalonitrile resin precursor (TPPA-Ph) was successfully synthesized by reacting ,,-tris(4-hydroxyphenyl)-1-ethyl-4-isopropylbenzene (TPPA) with 4-nitrophthalonitrile (NPh) via nucleophilic substitution. The presence of residual phenolic hydroxyl groups in the TPPA-Ph precursor promoted the curing reaction of phthalonitrile resin in the absence of an additional curing reagent. Self-cured TPPA-Ph resins exhibited relatively low melting points (less than 100 degrees C), high thermal stability, and a wide processing window (116 degrees C). Furthermore, the TPPA-Ph precursors contained phenolic hydroxyl and cyano groups that can be used as flexibilizers and curing agents to optimize other phthalonitrile resins. Resorcinol-based phthalonitrile resin (DPPH) cured with various amounts of TPPA-Ph possessed excellent thermal and thermo-oxidative stability with a 5% weight loss temperature exceeding 530 degrees C, T(g)s above 380 degrees C, and a wide processing window and time. Therefore, as a novel precursor and curing agent for phthalonitrile resins, the triphenol A-based phthalonitrile resin is an ideal resin matrix for high-performance composites with broad application prospects in aerospace, shipping, machinery, and other high-tech fields.

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