The Synergistic Effect of Kaolinite/Halloysite on The Flammability and Thermostability of Polypropylene
Kaolinite (Kaol) and Halloysite nanotubes (HNT) were both aluminosilicate clay with the different micro-shape.In this work, HNT and Kaol together were introduced into polypropylene (PP)/intumescent flame retardant (IFR).The flammability of the composites was characterized by limiting oxygen index (LOI), vertical burning (UL-94), and cone calorimeter test (CCT).The results showed that for the composite of 75 wt% PP/25 wt% IFR, its LOI was 31.0% and it obtained UL-94 V-2 grade.For the composite of 75 wt% PP/ 23.5 wt% IFR/ 1.5 wt% (Kaol/HNT=9/1), its LOI increased to 36.9 and it obtained UL-94 V-0 grade;at same time, its peak heat release rate (pHRR) value in CCT decreased by 82.2% compared to neat PP.The results illustrated that Kaol/HNT combination were beneficial to form cross-linking network and promote compact char forming with higher strength.
W.X.Sun W.F.Tang X.Y.Gu S.Zhang J.Sun H.F.Li
Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China;Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing, 100029, China
国际会议
杭州
英文
97-98
2018-06-14（万方平台首次上网日期，不代表论文的发表时间）