中国塑料

中国塑料 ›› 2011, Vol. 25 ›› Issue (04): 89-92 .DOI: 10.19491/j.issn.1001-9278.2011.04.021

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纳米水滑石/氧化锌/氧化镁复合改性聚氯乙烯的燃烧特性

苏虎 包永忠 黄志明   

  1. 浙江大学化工系聚合与聚合物工程研究所 浙江大学化工系
  • 收稿日期:2010-11-04 修回日期:2011-01-23 出版日期:2011-04-26 发布日期:2011-04-26

Combustion Properties of Poly(vinyl chloride)/Nano Hydrotalcite/ZnO/MgO Composites

SU Hu BAO Yongzhong HUANG Zhiming   

  • Received:2010-11-04 Revised:2011-01-23 Online:2011-04-26 Published:2011-04-26
  • Contact: BAO Yongzhong

摘要： 采用原位悬浮聚合制备了聚氯乙烯/纳米水滑石（PVC/HT）复合材料，并进一步与ZnO、MgO复合。采用锥形量热仪分析了PVC/HT/ZnO/MgO复合材料的燃烧特性。结果表明，HT、ZnO、MgO在PVC基体中分散良好，HT/ZnO/MgO对降低PVC燃烧过程中的热释放速率和烟雾释放速率有良好的协同作用。PVC/HT/ZnO/MgO(95/5/3/3)复合材料的最大热释放速率和最大烟雾释放速率比纯PVC降低了50 %以上，残留率明显提高。PVC/HT/ZnO/MgO复合材料的拉伸强度和缺口冲击强度均大于PVC/ZnO/MgO复合材料。

关键词: 聚氯乙烯, 水滑石, 锥形量热仪, 热释放速率, 烟雾释放速率, 氧化镁, 氧化锌

Abstract: In this paper, poly(vinyl chloride)/nano hydrotalcite (PVC/HT) composites were prepared by in-situ suspension polymerization, which were further blended with ZnO and MgO. The combustion properties of PVC/HT/ZnO/MgO composites were investigated using cone calorimetry. It was found that HT, ZnO and MgO were well dispersed in PVC matrix. ZnO and MgO had the synergistic effect with HT on reducing the heat and smoke release rates during combustion. Compared to neat PVC, the peak heat smoke release rates of PVC/HT/ZnO/MgO(95/5/3/3) composite decreased more than 50 %, and the char yield was obviously increased. It was also found that tensile and impact strength of PVC/HT/ZnO/MgO composites were greater than that of PVC/ZnO/MgO composites.

Key words: poly(vinyl chloride), hydrotalcite, cone calorimeter, heat release rate, smoke release rate, magnesium oxide, zinc oxide

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