摘要
采用十一烯酸根插层水滑石存在下的氯乙烯悬浮聚合聚氯乙烯（PVC）／水滑石纳米复合材料，研究了纳米复合材料的结构及纳米水滑石含量对复合材料热稳定性和燃烧烟密度的影响。发现原位聚合中部分氯乙烯与插层十一烯酸共聚，可实现聚合物插层；复合材料中水滑石部分剥离，分散尺寸小；随着纳米水滑石含量增加，复合材料的热失重温度和热变色时间增加，热稳定性提高；纳米水滑石对PVC具有显著的抑烟作用，当纳米水滑石含量为1．25％（质量分数）时，最大燃烧烟密度减小40％。
Poly（vinyl chloride）（PVC）/hydrotalcite nanocomposites were prepared via suspension polymerization of vinyl chloride in presence of 10-undecenonate intercalated hydrotalcite. The structure of obtained nanocomposite and influences of hydrotalcite on the thermal stability and the smoke density during combustion were investigated. It showed that a part of vinyl chloride was intercalated into the layers of hydrotalcite and copolymerized with 10-undecenonate in situ. Hydrotalcite particles were partially exfoliated and dispersed in polymer matrix in the nano-scale. The thermal decomposition temperature and time increased as the weight fraction of hydrotalcite increased, indicating the improvement of thermal stability of PVC. Nano-sized hydrotalcite particles exhibited an effective smoke-suppression function on PVC. The maximum smoke density decreased 40 % when the weight fraction of hydrotalcite was 1.25 % in the nanocomposite.
出处
《中国塑料》
CAS
CSCD
北大核心
2007年第3期40-43,共4页
China Plastics
基金
浙江省重大科技项目资助（2005C11039）
关键词
聚氯乙烯
水滑石
原位聚合
热稳定性
烟密度
poly（vinyl chloride）
hydrotalcite
in-situ polymerization
thermal stability
smoke density
