摘要
膨胀型阻燃剂b -MAP与聚丙烯的相容性良好,2 5%的b MAP的添加量可以使聚丙烯UL94阻燃等级达V0级,极限氧指数为2 9.0 %。通过扫描电子显微镜对b- MAP/PP复合材料燃烧后的膨胀炭层结构进行观察,发现膨胀炭层外部堆叠紧密,内部充斥着不燃性气体氨气,此种形貌结构有效地阻止了氧气和热量的透入,从而阻止材料进一步燃烧。
Intumescent flame retardant b-MAP has good compatibility with PP. At a level of 25%, b-MAP imparts a consistent UL94-V0 rating and 29.0%( LOI ) of flame retardancy to PP. Intumescent char residues of b-MAP/PP composite after burning were observed by means of SEM. The result showed that intumescent char residues outside are stacked closely, and non-flammable air NH3 occurrred inside. This pattern structure inhibited permeation of oxygen and heat quality efficiently, which stopped materials further burning.
出处
《塑料工业》
CAS
CSCD
北大核心
2005年第B05期159-161,共3页
China Plastics Industry
基金
国家科技型中小企业技术创新基金项目(No03C26213300585)资助
