期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 98, 期 3, 页码 1469-1475出版社
WILEY
DOI: 10.1002/app.22282
关键词
flame retardance; poly(vinyl chloride) (PVC); degradation; zinc hydroxystannate; zinc stannate
The flame-retardant and smoke-suppressant properties of inorganic tin compounds such as zinc hydroxystannate (ZHS) and zinc stannate (ZS) were investigated in a comparison with alumina trihydrate, magnesium hydroxide, and Sb2O3 through the limiting oxygen index test and smoke density test. The flame-retardant mechanisms were studied through the char yield test, SEM, quantitative analysis, thermogravimetry and differential thermal analysis. The thermal degradation in air of flexible PVC treated with the above compounds was studied by thermal analysis from ambient temperature to 800 degrees C. The results showed that tin compounds such as ZHS and ZS could be used as a highly effective flame retardant for flexible PVC, and it appears that the tin compound may exert its action in both the condensed and vapor phases, but mainly in condensed phases as a Lewis acid. (c) 2005 Wiley Periodicals, Inc.
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