摘要
采用氧指数测试、水平燃烧性能测试、扫描电镜分析及热重分析等方法研究了不同配比 Ca(OH)_2/Mg(OH)_2的加入对聚乙烯(PE)复合材料[PE 用量为65%(质量分数,下同),Mg(OH)_2和 Ca(OH)_2总用量为35%]的氧指数、水平燃烧级别和燃烧后炭层表面形貌等燃烧性能的影响。结果表明,PE 复合材料氧指数达到24.5%,且其最快分解温度(T_(max))比纯 PE 滞后9.2℃,并促进致密炭层的形成。Ca(OH)_2与 Mg(OH)_2并用对 PE 阻燃性能有一定的协同增效作用,有望实现用廉价的 Ca(OH)_2对 Mg(OH)_2的替代。
The flame retardant properties of PE based composite with Ca（OH）2 and Mg（OH）2 were characterized with oxygen index analyzer, vertical horizontal analyzer, SEM, and TG. When the total content of Ca（OH）2 and Mg（OH）2 was 35 wt%, the LOI of the composite reached 24.5 %, and the Tin, lagged neat PE by 9.2 ℃. The formation of dense char layer was promoted. Ca（OH）2 and Mg（OH）2 had some synergistic effects to the flame retardant properties of PE. It could be expected to replace some of Mg（OH）2 with low cost Ca（OH）2.
出处
《中国塑料》
CAS
CSCD
北大核心
2008年第2期28-32,共5页
China Plastics
基金
教育部“新世纪优秀人才支持计划”(NCET-04-0614)
福建省重大专项前期研究(2005HZ1004)
关键词
氢氧化钙
氢氧化镁
聚乙烯
阻燃性能
协同增效
calcium hydroxide
magnesium hydroxide
polyethylene
flame retardancy
synergistic effect
