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首页> 外文期刊>RSC Advances >Improved thermal properties of epoxy resin modified with polymethyl methacrylate-microencapsulated phosphorus-nitrogen-containing flame retardant
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Improved thermal properties of epoxy resin modified with polymethyl methacrylate-microencapsulated phosphorus-nitrogen-containing flame retardant

机译：改善了用聚甲基丙烯酸微盐 - 微胶囊化的含磷 - 氮阻燃剂改性的环氧树脂的热性能

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摘要

Epoxy resin (EP) composites with improved thermal resistance were fabricated. To solve the problem of low thermal resistance derived from phosphazene flame-retardant additives, we designed a system based on flame-retardant microcapsules P(H), with hexaphenoxycyclotriphosphazene as the core and polymethyl methacrylate as the shell. The core-shell structure was characterized and confirmed. The thermal resistance of the cured EP composites containing 1 wt% P(H) microcapsules was improved because of the increased glass transition temperatures. The P(2.75H)/EP composites can reach a limited oxygen index of 30.5% and V-1 rating in UL-94 tests. Heat and gas release rates were reduced during combustion tests. Residual images implied that the P(H) microcapsules may promote the formation of a flame-retardant char layer. Pyrolysis analysis demonstrated that the P(H) microcapsules can decompose in two procedures to produce flame-retardant gas components. Therefore, the flame-retardant mechanism involved the flame inhibition effect in the gas phase, and the charring effect in the condensed phase.
机译：制造具有改善的热阻的环氧树脂（EP）复合材料。为了解决源于磷腈阻燃添加剂的低热耐药性的问题，我们设计了基于阻燃微胶囊P（H）的系统，其中己烷氧基环三磷腈作为核心和聚甲基丙烯酸甲酯作为壳。核心壳结构的特征和确认。由于增加的玻璃化转变温度，改善了含有1wt％P（H）微胶囊的固化的EP复合材料的热阻。 P（2.75H）/ EP复合材料可达到约30.5％的有限氧指数和UL-94测试中的V-1等级。在燃烧试验期间，热量和气体释放速率降低。残留图像暗示P（h）微胶囊可以促进阻燃炭层的形成。热解析证明P（h）微胶囊可以分两道分解以产生阻燃气体组分。因此，阻燃机制涉及气相中的火焰抑制作用，以及冷凝相中的炭化作用。

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  • 来源
    《RSC Advances》 |2018年第52期|共14页
  • 作者

    Qu Lijie; Zhang Chunling; Li Peihong; Dai Xueyan; Xu Tianlu; Sui Yanlong; Gu Jinjia; Dou Yanli;

  • 作者单位

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

    Jiangsu Oseaguard Bldg Mat &

    Technol Dev Co Ltd Nanjing 210000 Jiangsu Peoples R China;

    Jilin Univ Coll Mat Sci &

    Engn Key Lab Automobile Mat Minist Educ Changchun 130025 Jilin Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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  • 入库时间 2022-08-19 17:43:34

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