摘要
用微胶囊包裹的方法改善了六溴环十二烷(HBCD)的热稳定性能。微胶囊化HBCD的包覆过程为:密胺与甲醛反应生成氨基树脂预聚物;HBCD固体粉末分散到水相后,氨基树脂预聚物以原位聚合的方式在HBCD颗粒表面聚合成膜。差示扫描量热计(DSC),X射线光电子能谱(XPS),透射电镜(TEM)等表征方法证实HBCD已被完全包覆。实验结果表明,经过微胶囊包覆后,HBCD的热稳定性能获得了明显的改善,热分解温度从150℃提高到220℃。注塑PS发泡板材的测试表明,微胶囊化HBCD的阻燃效率没有明显的下降,对PS板发泡没有明显影响。
The work in this paper aims at improving hexabromoeyelododeeane （HBCD） thermal stability by microcapsulation method. The preparation of microcapsulated HBCD can be described as follows. Firstly, oligomers of melamine-formaldehyde were synthesized in an aqueous medium. Secondly, HBCD powders were dispersed in water medium rapidly by an emulsifying machine. Then, the obtained oligomers were cross-linked in-site in the surfaces of HBCD powders. The physical and chemical properties of the microcapsulated HBCD were characterized by DSC, XPS and TEM, which all give the positive evidence that HBCD powders have been coated completely. The results show that the thermal stability of HBCD has been improved greatly by microcapsulation, and the initial thermal decomposition temperature increases from 150℃ for original HBCD to 220℃ for microncapsulated HBCD, while preserving its high flame retardant efficiency in PS foams and having no deleterious effect on foamability.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第5期223-226,共4页
Polymer Materials Science & Engineering
关键词
微胶囊
六溴环十二烷
热稳定性
阻燃剂
microcapsulation
hexabromocyclododecane
thermal stability
flame retardant
