Abstract: Melamine-formaldehyde (MF) resin microcapsules containing resoreinol bis (diphenylphosphate)（RDP）were prepared by in situ polymerization. RDP acted as the core material and MF resins as the wall material. The effects of surfactant and prepolymer on the physical properties of melamine–formaldehyde encapsulated RDP microcapsules were investigated. Chemical structure of the prepared microcapsules was characterized by X-ray photoelectron spectroscopy (XPS). Morphologies and thermal properties were also investigated by scanning electron microscopy (SEM) and thermogravimetric analysis (TG). The results showed that the mixed surfactant had well distributed and uniform particles，and a size of 40—80μm. When the mass ratio of prepolymer and RDP was 1∶1，the micro-capsule size was minimum，with little melamine resin deposited on the surface.The results indicated that the initial thermal decomposition temperature of microcapsule increased from 400℃ for original RDP to 800℃，showing better thermal stability.

摘要： 采用三聚氰胺-甲醛树脂（MF），通过缩聚反应对间苯二酚双磷酸二苯酯（RDP）进行微胶囊包覆。以RDP为囊心，MF为囊材，合成了微胶囊RDP。并考察了表面活性剂种类及预聚体用量对微胶囊合成工艺的影响。利用电子能谱分析检测了微胶囊化学结构，采用扫描电镜（SEM）、热重分析对其表面形貌及热稳定性进行了观察和分析。结果发现，复合型活性剂对微胶囊具有很好的分散作用，制备出的微胶囊颗粒均匀，粒径经检测在40～80 μm；预聚体与RDP的质量比为1∶1时，微胶囊的粒径最小，且只有少量蜜胺树脂沉积在微胶囊表面上。通过微胶囊包覆的RDP热稳定性能明显提高，由原来的400 ℃完全分解提高到800 ℃。