摘要
通过在可膨胀石墨(EG)表面原位引发三聚氰胺甲醛树脂(MF)缩聚反应成功制备出一种新型核-壳结构阻燃粒子。红外光谱(FT-IR)及扫描电镜(SEM)分析表明,MF在EG表面形成了完善的包覆结构,有效提高了EG的阻燃性能。10%质量分数核-壳结构粒子的引入即能显著提高硬质聚氨酯泡沫的阻燃性能并保持良好的力学性能和绝热性能;完善的MF包覆壳层对EG阻燃性能的提高、与基体界面的改善作用以及不利导热作用的有效屏蔽是该综合性能提高的主要原因。
An core-shell expandable graphite （EG）/melamine-formaldehyde resin （MF） flame retardant particles （EG@MF） have been successfully synthesized by encapsulating EG particles in MF resins via in-situ condensation polymerization. The core-shell structure was characterized by FT-IR and SEM. The expandability of EG has been remarkably enhanced with the formation of uniform and integrated MF shell structure. Incorporation of 10% EG@MF particles into rigid polyurethane foam （RPUF） could significantly improve the flame retardancy of RI＇UF, while maintain its good mechanical and insulation properties. This overall improvement is attributed to the increase of the expandability and interracial adhesion as well as the screening of thermal conductivity of encapsulated EG in MF resin.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第1期22-26,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(21176158
21076128)
关键词
可膨胀石墨
三聚氰胺甲醛树脂
核-壳结构粒子
无卤阻燃
硬质聚氨酯泡沫
expandable graphite
melamine-formaldehyde
core-shell particles
halogen-free flame retardant
rigid polyurethane foam
