摘要
以不同层状硅酸盐部分取代氢氧化铝（ATH）、氢氧化镁（MH）和相容剂AX8900复配协同阻燃高密度聚乙烯（HDPE）复合材料。探讨了不同层状硅酸盐对复合材料极限氧指数、锥形量热参数、热稳定性以及微观结构的影响。结果表明，与未添加层状硅酸盐相比，添加3％～5％的层状硅酸盐能提高极限氧指数和热稳定性，有更低的燃烧热释放速率峰值（p1-HRR、p2-HRR）和热释放总量（THR），也能更好地在基体材料中分散，说明层状硅酸盐在体系中能起到协效阻燃作用。这些层状硅酸盐中，改性的比未改性的协效阻燃作用强，埃洛石（HNTs）和羟基锡酸锌包覆埃洛石（coated—HNTs）比凹凸棒土（AT）和表面改性凹凸棒土（m-AT）能更好地发挥协效阻燃作用。
The halogen-free flame-retardant high-density polyethylene was prepared with compatibility agent and different layered silicates partly replacing the aluminum hydroxide （ATH） and magnesium hydroxide （MH）. The limiting oxygen index （LOI）, cone calorimeter parameters, thermal stability and microstructure of composites with different contents of layered silicate were researched. The results show that compared to the composites with no layered silicate in it, those with layered silicate（3% -5%） can improve the limiting oxygen index and thermal stability, and the peaks of the combustion heat release rate（pl-HRR,p2-HRR） and the total heat release（THR） are lower which can better disperse in the matrix materials. The synergistic effect of layered silicate on high-density polyethylene is proved. Among these layered silicates, the synergistic effect of those modified is more noteable than those unmodified. The synergistic effect of halloysite（HNTs） and those modified with hydroxy stannate is more noteable than that of attapulgite and those modified.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2016年第12期70-74,81,共6页
Polymer Materials Science & Engineering
关键词
无卤阻燃高密度聚乙烯
层状硅酸盐
协效阻燃
热稳定性
锥形量热
halogen-free flame-retardant high-density polyethylene
layered silicates
synergistic effect
thermal stability
cone calorimeter parameters
