Improved flame retardancy of epoxy resin composites modified with a low additive content of silica-microencapsulated phosphazene flame retardant

被引：51

作者：

Qu, Lijie ^{[1
,2
,3
]}

Sui, Yanlong ^{[1
]}

Zhang, Chunling ^{[1
]}

Dai, Xueyan ^{[1
]}

Li, Peihong ^{[1
]}

Sun, Guoen ^{[1
]}

Xu, Baosheng ^{[2
,3
]}

Fang, Daining ^{[2
,3
]}

机构：

[1] Jilin Univ, Sch Mat Sci & Engn, Changchun 130025, Peoples R China

[2] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China

[3] Beying Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2020年 / 148卷

基金：

中国国家自然科学基金;

关键词：

Flame retardancy; EP composites; Microcapsules; Phosphazene; Additives; METAL-ORGANIC FRAMEWORK; THERMAL-STABILITY; MECHANICAL-PROPERTIES; GRAPHENE OXIDE; FIRE SAFETY; PHOSPHORUS; CYCLOTRIPHOSPHAZENE; DEGRADATION; COMPOUND; NITROGEN;

D O I：

10.1016/j.reactfunctpolym.2020.104485

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Epoxy resin (EP) composites with improved flame retardancy were fabricated. To solve the problem of the large addition of phosphazene flame retardants, we designed a system based on phosphorus nitrogen silicon synergistic flame-retardant Si(H) microcapsules with silica as the shell and hexaphenoxycyclotriphosphazene as the core. Si(H)/EP composites were manufactured with two coupling agents to promote interactions. In cone calorimetric tests, heat and gas releases of Si(H)/EP composites were reduced, and fire hazard was minimized. Residual analysis indicated the strong rigidity and mechanical robustness. The mechanism included phosphorus quenching effect and nitrogenous diluting effect of flame inhibition effect in gas phase, and phosphorus charring effect and silicic barrier and protective effect in solid phase. This research provides an effective flame-retardant method for EP composites with a low additive content.

引用

页数：15

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