Organic Aluminum Hypophosphite/Graphitic Carbon Nitride Hybrids as Halogen-Free Flame Retardants for Polyamide 6

被引：15

作者：

Guo, Chengxin ^{[1
]}

Zhao, Yongshuai ^{[1
]}

Ji, Guichen ^{[1
]}

Wang, Chaosheng ^{[1
]}

Peng, Zhihan ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

来源：

POLYMERS | 2020年 / 12卷 / 10期

关键词：

graphitic carbon nitride; organic aluminum hypophosphite; halogen-free; flame retardancy; polyamide; 6; THERMAL-DEGRADATION; FIRE; COMPOSITES; BEHAVIORS; GRAPHENE; RESIN;

D O I：

10.3390/polym12102323

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The novel organic aluminum hypophosphite (ALCPA) and its hybrid (CNALCPA) with graphitic carbon nitride (g-C3N4) were successfully synthesized and applied as halogen-free flame retardants in polyamide 6 (PA6). Their structures, morphology, thermal stability, and fire properties were characterized. Results showed that both ALCPA and CNALCPA had good flame retardancy. PA6/CNALCPA composites achieved a high limited-oxygen-index (LOI) value of 38.3% and a V-0 rating for UL94 at 20 wt % loading, while PA6/ALCPA composites could reach a V-1 rating for UL94. The flame-retardant mechanism was also studied. On the one hand, the incorporation of g-C3N4 produced more gas-phase products, which indicated a gas-phase mechanism. On the other hand, g-C3N4 could catalyze the thermal degradation of ALCPA and PA6 to form a compact char layer that was evidence for a solid-phase mechanism. The tensile test of the PA6 composites also displayed good mechanical properties.

引用

页码：1 / 15

页数：15