紫外臭氧处理聚-α-甲基苯乙烯微球表面化学镀镍

Ultraviolet light and ozone surface modification of poly-alpha α-methylstyrene using electroless nickel plating

通过对微球表面进行紫外臭氧的处理,改善了镍层在微球表面的沉积性,经紫外臭氧处理的聚-α-甲基苯乙烯微球通过红外图谱和红外图像表征,用扫描电镜测量处理前后的镀镍微球表面形貌。结果表明:经过紫外臭氧联合处理后,微球表面被氧化,同时接入了氨基,且处理过的微球镀镍后的结合力和表面形貌得到了明显改善。从而得出用紫外臭氧表面改性的方法可以提高塑料微球和金属壳的结合力。

The deposition capability of nickel on the surface of poly-α-methylstyrene microspheres was improved by combined treatment of ozone aeration and UV irradiation in aqueous ammonia. Surface properties of the treated film were investigated by X- ray photoelectron spectroscopy（XPS） and Fourier transform infrared（FT-TR） measurements. The samples were characterized by SEM. The results indicate that after ultraviolet joint ozone treatment, the surfaces of microspheres were oxidized, and the amine and amide groups are introduced on their surface. The images of SEM show the adhesion between microspheres and nickel-phosphorus films was improved after surface modification. This was attributed to amide which could chemisorb palladium ions to catalyze electroless nickel plating on the pretreated surface of microspheres.