• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Novel multi-element DOPO derivative toward low-flammability epoxy resin
【24h】

Novel multi-element DOPO derivative toward low-flammability epoxy resin

机译：新型多元素DOPO衍生物朝向低易燃环氧树脂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to obtain cured epoxy resin (EP) with satisfactory thermal stability and flame retardancy, a multi-element P/N/Si-containing flame retardant (DPAK) was synthesized by a facile way and was used as a reactive flame retardant to prepare flame-retardant EP. The flame-retardant efficiency of DPAK was subsequently evaluated by limiting oxygen index (LOI), UL-94, and cone calorimeter (CC) test. With a low incorporation amount of DPAK (4 wt%), the resultant EP achieve to UL-94 V-0 rating, and the corresponding LOI value reached to 30%, which was higher than that of EP containing DOPO (2.9 wt%). More importantly, the thermogravimetric analysis (TGA) revealed their higher thermal stability than those of EP containing DOPO. Furthermore, dynamic mechanical analysis (DMA) shown the maintained glass transition temperature of DPAK-EP. The increase of CO/CO2 ratio in the CC test for the DPAK-EP samples proved the gas-phase activity of DPAK. Additionally, DPAK showed evidence of condensed phase activity by increasing char residue in TGA and CC test. The scanning electronic microscope together with the energy dispersive X-ray spectrometer (SEM-EDX) and X-ray photoelectron spectroscopy (XPS) exhibited that DPAK promoted the formation of compacted phosphorus-silicon char layer. Subsequently, TG-FTIR results indicated that DPAK-EP produced lesser combustible gases than neat sample did, improving flame-retardant properties of epoxy resin.
机译：为了获得具有令人满意的热稳定性和阻燃性的固化环氧树脂（EP），通过容易方式合成多元的P / N / Si阻燃剂（DPAK），用作反应性阻燃剂以制备阻燃ep。随后通过限制氧指数（LOI），UL-94和锥形量热计（CC）测试来评估DPAK的阻燃效率。具有低掺入量的DPAK（4wt％），所得EP达到UL-94 V-0等级，相应的LOI值达到30％，其高于含有DOPO的EP（2.9wt％） 。更重要的是，热重分析（TGA）揭示了比含有多奥多夫的EP的热稳定性更高。此外，动态机械分析（DMA）显示了DPAK-EP的维持玻璃化转变温度。 DPAK-EP样品中CC试验中CC / CO 2比的增加证明了DPAK的气相活性。另外，DPAK通过在TGA和CC试验中增加炭残余物来显示缩合相活性的证据。将扫描电子显微镜与能量色散X射线光谱仪（SEM-EDX）和X射线光电子谱（XPS）一起表现出DPAK促进了压实磷 - 硅炭的形成。随后，TG-FTIR结果表明DPAK-EP产生的较少的可燃气体比整齐的样品产生，改善环氧树脂的阻燃性能。

著录项

  • 来源
    《Journal of Applied Polymer Science》 |2020年第46期|共11页
  • 作者

    Luo Haiqiang; Rao Wenhui; Liu Yuanli; Zhao Peng; Wang Liang; Yu Chuanbai;

  • 作者单位

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

    Guilin Univ Technol Coll Mat Sci &

    Engn Key Lab New Proc Technol Nonferrous Met &

    Mat Minist Educ Guangxi Key Lab Opt &

    Elect Mat &

    Dev Guilin Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    flame retardance; resins; thermosets;

    机译：阻燃性;树脂;热固性剂;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号