摘要
本文采用甲基丙烯酸甲酯(MMA)作为单体、偶氮二异丁腈(AIBN)作为引发剂,在氮化物荧光粉表面原位聚合,实现了聚甲基丙烯酸甲酯(PMMA)在氮化物荧光粉表面的包覆,包覆厚度可控,讨论了包覆厚度对氮化物荧光粉发光强度的影响。通过对表面处理后氮化物荧光粉的分析,证实了处理后氮化物荧光粉具有极好的防水性,提升了氮化物荧光粉的抗高温高湿性能。处理后氮化物荧光粉的发光强度、封装性能、老化性能等均优于未处理氮化物荧光粉。
Methyl methacrylate(MMA)was used as monomer,azo diisobutyl amidine hydrochloride was used as initiator,the surface of nitride phosphors were coated by in situ polymerization with poly(methyl methacrylate)(PMMA).Thickness of the coated PMMA which could affect luminous intensity of nitride phosphors was controllable by process improvement and amount of methyl methacrylate.Through analyzing the surface of the coated nitride phosphors,confirmed that the coated nitride phosphors had excellent waterproof,which obviously promoted capability of resisting high temperature and humidity.Finally,luminous intensity,encapsulation and aging properties of the coated nitride phosphors were better than untreated nitride phosphors.
作者
李儆民
童华南
Li Jing-min;Tong Hua-nan(Shaanxi Photoelectric Technology Co., Ltd, Xi an, 710077, China)
出处
《化工管理》
2017年第23期145-147,150,共4页
Chemical Engineering Management
