A Novel Spirocyclic Halogen-Free Flame Retardant: Synthesis and Flammability Characteristics in Epoxy Resin Composites

被引：0

作者：

Li, Hongcheng ^{[1
]}

Liu, Jiping ^{[1
]}

Zhao, Jiayi ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

来源：

PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON ADVANCED ENGINEERING MATERIALS AND TECHNOLOGY | 2015年 / 38卷

关键词：

Intumescent flame retardant; Imidazole spirocyclic phosphoramidate; Epoxy resin; POLYPROPYLENE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel spirocyclic halogen-free flame retardant ISCP was successfully synthesized, and its structure was confirmed by FTIR, H-1 NMR, and P-31 NMR. Results of LOI, UL-94, and CONE tests demonstrated that the ISCP effectively enhanced flame retardancy of EP composites, which could improve the LOI value from 19.5 to 36.8, pass the UL-94 V-0 rating when 20 wt.% ISCP was added, and CONE tests suggested that ISCP could decrease the PHRR and THR remarkably. TGA tests revealed that during the combustion, ISCP could increase the amount of residual char. SEM morphologies indicated that ISCP greatly facilitated the char-forming process and generated uniform and compact intumescent char layer, leading to EP with improved flame retardancy.

引用

页码：477 / 481

页数：5

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