中国塑料

中国塑料 ›› 2014, Vol. 28 ›› Issue (03): 59-64 .DOI: 10.19491/j.issn.1001-9278.2014.03.012

• 材料与性能 • 上一篇    下一篇

乙烯基聚硅氧烷包覆改性聚磷酸铵及其在环氧树脂中的阻燃应用

刘晓威 武伟红 武翠翠 屈红强 徐建中   

  1. 河北大学 化学与环境科学学院 河北农业大学理学院 河北大学 化学与环境科学学院 河北大学，化学与环境科学学院 河北大学
  • 收稿日期:2013-12-11 修回日期:1900-01-01 出版日期:2014-03-15 发布日期:2014-03-15

Vinyl Polysiloxane Surface-modified Ammonium Polyphosphate and Its Application in Epoxy Resin as Flame Retardants

Xiaowei Liu Cuicui Wu QU Hongqiang   

  • Received:2013-12-11 Revised:1900-01-01 Online:2014-03-15 Published:2014-03-15
  • Contact: QU Hongqiang

摘要： 以正硅酸乙酯（ＴＥＯＳ）与乙烯基三乙氧基硅烷（ＶＴＯＳ）为前驱物，采用溶胶凝胶工艺将乙烯基引入聚磷酸铵（ＡＰＰ）的表面，以期对ＡＰＰ进行二次接枝改性。对ＶＴＯＳ改性ＡＰＰ（ＶＭＡＰＰ）进行了研究，并研究了其对环氧树脂（ＥＰ）阻燃性能的影响。结果表明，包覆膜材料中存在乙烯基；经含有乙烯基的聚硅氧烷对ＡＰＰ进行包覆改性后，在ＡＰＰ表面生成一层致密的保护膜，表面Ｐ、Ｎ 元素含量明显降低，Ｃ元素含量明显增加，出现Ｓｉ元素的吸收峰；ＶＭＡＰＰ的疏水性及耐水性均得到改善；ＶＭＡＰＰ能够促使ＥＰ生成更为致密和稳定的炭层，促进ＥＰ阻燃性能的改善。

关键词: 环氧树脂, 聚硅氧烷, 聚磷酸铵, 表面改性, 阻燃

Abstract: Ammonium polyphosphate (APP) was treated with tetraethoxysilane (TEOS) and vinyltriethoxysilane (VTOS) by a sol-gel method leading to vinyl modified APP (VMAPP), which was introduced into an epoxy resin (EP). The surface vinyl groups could be used as reaction sites for further modification. Fourier transform infrared spectrum (FTIR) analysis confirmed the presence of the vinyl in the epoxy coating film. Scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) analysis indicated that a dense protective film was present on the surface of APP. On the film, the content of P, N elements was significantly decreased, and the content of C element increased significantly. The water resistance of VMAPP was better than unmodified APP. The Si element present on the surface of APP synergized with APP to generate more compact and stable char layer and thus promoted the flame retardant performance of EP.

Key words: epoxy resin, polysiloxane, ammonium polyphosphate, surface-modification, flame retardancy

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