中国塑料 ›› 2020, Vol. 34 ›› Issue (11): 29-35.DOI: 10.19491/j.issn.1001-9278.2020.11.006

• 材料与性能 • 上一篇    下一篇

改性三氧化二锑协效二乙基次磷酸铝阻燃PA6研究

柳妍1, 鲁哲宏1, 康兴隆1, 冯伟丽1, 刘保英2, 李建通2, 丁涛1,2, 徐元清1,2, 房晓敏1,2()   

  1. 1.河南大学化学化工学院,河南 开封 475004
    2.河南大学阻燃与功能材料河南省工程实验室,河南 开封 475004
  • 收稿日期:2020-05-08 出版日期:2020-11-26 发布日期:2020-11-20
  • 基金资助:
    国家自然科学基金项目(51403051);河南省科技发展计划项目(162102210023)

Study on Synergistic Effect of Modified Antimony Trioxide and Aluminum Diethylhypophosphite on Flame⁃retardant PA6

LIU Yan1,  LU Zhehong1,KANG Xinlong1, FENG Weili1, LIU Baoying2, LI Jiantong2, DING Tao1,2, XU Yuanqing1,2, FANG Xiaomin1,2()   

  1. 1.College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China
    2.Flame Retardant and Functional Materials Engineering Laboratory of Henan Province,Henan University,Kaifeng 475004,China
  • Received:2020-05-08 Online:2020-11-26 Published:2020-11-20
  • Contact: FANG Xiaomin E-mail:xmfang@henu.edu.cn

摘要:

采用硅烷偶联剂(KH560)对三氧化二锑(Sb2O3)进行表面改性处理,并将其协效二乙基次磷酸铝(ADP)应用于聚酰胺6(PA6)阻燃研究。采用傅里叶变换红外光谱和热失重分析对改性Sb2O3进行表征,运用垂直燃烧、氧指数、锥形量热仪、热分析以及扫描电子显微镜和拉曼光谱等对阻燃PA6进行了阻燃性能及机理分析。结果表明,改性 Sb2O3与Sb2O3相比,与ADP具有更好的协同阻燃效应,其作用机制主要是在气相发挥阻燃作用;当ADP含量为8 %,改性Sb2O3含量为2 %时,阻燃PA6复合材料的UL 94等级达到V?0级,极限氧指数达到33.8 %。

关键词: 聚酰胺6, 二乙基次磷酸铝, 三氧化二锑, 协同作用

Abstract:

Antimony trioxide (Sb2O3) was modified with a silane coupling agent (KH560), and then the synergistic flame retarding effect of Sb2O3 and aluminum diethylphosphate (ADP) on polyamide 6 (PA6) was investigated. The chemical structure and thermal performance of modified Sb2O3 was characterized by Fourier-transform infrared spectroscopy and thermogravimetric analysis (TG). The flame-retardant performance and relevant mechanism of PA6-based composites were analyzed by vertical burning test, limiting oxygen index, and cone calorimeter analysis, TGA, SEM and Raman spectroscopy. The results indicated that the modified Sb2O3 exhibited a better synergistic flame-retardant effect than pristine Sb2O3. The flame-retardant PA6 composites achieved a UL 94 V-0 classification and a LOI of 33.8 vol% at a modified Sb2O3 content of 2 wt% and a ADP content of 8 wt%.

Key words: polyamide 6, aluminum diethylhypophosphite, antimony trioxide, synergistic effect

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