中国塑料

中国塑料 ›› 2013, Vol. 27 ›› Issue (10): 52-57 .DOI: 10.19491/j.issn.1001-9278.2013.10.012

• 材料与性能 • 上一篇    下一篇

Zn2SnO4的制备及其对软质聚氯乙烯的阻燃研究

徐建中 封小洁 陈灵智 焦运红 王春征   

  1. 河北大学 河北大学化学与环境科学学院 河北大学，衡水学院 河北大学
  • 收稿日期:2013-08-05 修回日期:1900-01-01 出版日期:2013-10-26 发布日期:2013-10-26

Preparation of Zn2SnO4 and Its Flame Retardant Effect on Flexible Poly(vinyl chloride)

  

  • Received:2013-08-05 Revised:1900-01-01 Online:2013-10-26 Published:2013-10-26

摘要： 以结晶四氯化锡和硝酸锌为原料，通过2步煅烧法制备锡酸锌(Zn2SnO4)阻燃剂；通过极限氧指数、烟密度等级和残炭量研究了Zn2SnO4对软质聚氯乙烯（PVC）的阻燃和消烟性能的影响，同时对力学性能进行了研究。结果表明，Zn2SnO4的用量为15份时，对软质PVC的阻燃消烟效果明显，其极限氧指数可达36.0 %、烟密度等级为86.2 %、残炭率为29.7 %、拉伸强度为25.47 MPa、断裂伸长率为168 %；利用热重分析、差热分析和扫描电子显微镜等方法对阻燃PVC进一步进行表征，结果表明Zn2SnO4的加入促使软质PVC的起始分解温度降低，残炭量增加，燃烧后剩炭结构致密，阻燃效果明显。

关键词: 阻燃, 聚氯乙烯, 锡酸锌, 消烟, 热分析

Abstract: Zine stannate (Zn2SnO4) was synthesized through twostep calcining from SnCl4 and Zn(NO3)2, and was used as a flameretardant/smoke suppressant for flexible poly (vinyl chloride). The flame retardacy was characterized by the limited oxygen index test, smoke density test (SDR), and the char yield test. The mechanical properties were also studied. When 15 phr Zn2SnO4 was used, PVC showed excellent flame retardacy and smoke suppression, limited oxygen index was 36.0 %, SDR was 86.2 %, char yield was 29.7 %, tensile strength was 25.47 MPa, and elongation at break was 168 %. Differential thermal analysis, thermogravimetry, and scanning electron microscope showed that Zn2SnO4 decreased the degradation temperature and increased char yield.

Key words: flame retardant, poly (vinyl chloride), Zn2SnO4, smoke suppression, thermal analysis

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