Journal of South China University of Technology(Natural Science Edition) ›› 2019, Vol. 47 ›› Issue (5): 39-47.doi: 10.12141/j.issn.1000-565X.180470

• Materials Science & Technology • Previous Articles     Next Articles

Flame-Retarded Nylon 6 by the Synergy of Melamine Stannous Phosphate Glass with Aluminum Diethylphosphinate

 LIU Shumei XIA Wei ZHU Ruizhe CAI Jianan ZHAO Jianqing   

  1.  School of Materials Science and Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2018-09-20 Revised:2018-12-20 Online:2019-05-25 Published:2019-04-01
  • Contact: 刘述梅( 1968-) ，女，博士，教授，博士生导师，主要从事高分子材料改性研究 E-mail:liusm@scut.edu.cn
  • About author:刘述梅( 1968-) ，女，博士，教授，博士生导师，主要从事高分子材料改性研究
  • Supported by:
     Supported by the National Natural Science Foundation of China( 51573054)

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Abstract: Stannous phosphate glass was prepared by melting stannous oxide and phosphorus pentoxide at a molar ratio of 50∶50 at 500 ℃，which was then combined with melamine by ionic bond to form melamine stannous phosphate glass ( MEPglass) ． Finally，MEPglass and aluminum diethylphosphinate ( AlPi) were employed to obtain halogen-free flame-retardancy of PA6． It is found that 0. 5% MEPglass and 9% AlPi can induce PA6 to reach UL94 V-0 @ 3. 2 mm rating，with a total relative addition reduction of 26. 9% ，as compared with the addition ( 13% ) of single AlPi，while the tensile strength improves by 8. 5% and the melt flow rate increases by 13. 3% ． Moreover，the results obtained from the cone calorimeter，thermogravimetry-infrared spectroscopy and thermogravimetric analysis of the samples，and scanning electron microscopy and X-ray energy spectrum analysis of carbon residue indicate that there is strong flame-retardant synergy of MEPglass and AlPi on PA6 in both the gas phase and the condensed phase．

Key words: stannous phosphate glass, melamine, aluminum diethylphosphinate, PA6, flame retardant, synergy

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