塑料科技2011，Vol.39Issue(10)：53-57,5.
交联聚苯乙烯的热分解与燃烧性能研究
Thermal Degradation and Fire Performance of Cross-linking Polystyrene
楚广成 1李英飞 1马乐 2刘继纯1
作者信息
- 1. 中实洛阳工程塑料有限公司,河南洛阳471039
- 2. 河南科技大学化工与制药学院高分子科学与纳米技术重点实验室,河南洛阳471003
- 折叠
摘要
Abstract
A series of cross-Iinking polystyrene (PS) materials were synthesized by taking copolymerizing styrene (St) as monomer and divinyl benzene(OVB) as cross-linking agent. The thermal degradation behavior and fire performance of cross-linking PS were studied by means of thermogravimetry, high-temperature pyrolysis, horizontal burning, oxygen index and cone calorimetry. The results show that both degradation temperature and char residue amoynt of cross-linking PS increase, and the thermal stability of cross-linking PS is enhanced noticeably, compared with linear PS; the cross-linking PS produces much less melt-dripping and smoke during burning; the heat release rate (HRR), mass loss rate (MLR) and burning rate all decrease, while the oxygen index value increases, which indicate that the flame retardancy of cross linking PS Is enhanced compared with its linear counterpart; it is found that the cross-linking PS exhibits optimal flame retardancy when the mass ratio of St/DVB is 100/3; the cross linking PS produces much char residue during combustion, which covers on the surface of the polymer material and forms a protection layer; the shielding and obstructing effects of the carbon residue layer to heat transfer, move of oxygen and fuel molecules are responsible for the lowered pyrolysis rate and improvement of flame retardancy.关键词
交联聚苯乙烯/热分解/燃烧性能/阻燃机理Key words
Cross-linking polystyrene/ Thermal degradation/ Fire performance/ Flame-retardant mechanism分类
化学化工引用本文复制引用
楚广成,李英飞,马乐,刘继纯..交联聚苯乙烯的热分解与燃烧性能研究[J].塑料科技,2011,39(10):53-57,5.
