环氧丙烯酸酯微球消光母液的制备及光扩散膜性能的研究

Preparation of Epoxy Acrylate Microsphere Matting Liquid and Study on Light-scattering Film Properties

以环氧丙烯酸酯(G500-P)、三乙烯四胺(TETA)和烯丙基二甘醇二碳酸酯(CR-39)为反应体系,通过反应诱导相分离法制备了微米级环氧丙烯酸酯微球(EAMs)消光母液。改变反应体系中G500-P的用量,可在较大范围内控制EAMs的粒径。通过UV固化的方法将复配的消光母液与透明UV固化涂料制成光扩散膜,探究了CR-39与G500-P不同质量比时制得的消光母液以及母液添加量对光扩散膜光学性能的影响,并对光扩散膜的实际消光效果进行了分析。结果表明:当选用CR-39与G500-P质量比为7∶3制得的消光母液,添加量为10%时,光扩散膜的透过率达到84.2%,同时雾度高达85.4%,光扩散膜兼具高透过率与高雾度。与传统直接共混微球的方式相比,添加消光母液能有效解决微球在共混过程中团聚的问题。

In this paper,epoxy acrylate(G500-P),triethylenetetramine(TETA)and allyl diethylene glycol dicarbonate(CR-39)were used as reaction systems to prepare the matting liquid based on micron-sized epoxy acrylate microspheres(EAMs)through reaction-induced phase separation method.Changing the amount of G500-P in the system could control the particle size of EAMs in a larger range.Compounding of matting liquid with transparent UV coatings and then cured by UV light could form light-scattering film.The effect of different matting liquid and the amount of liquid on the optical performance of the light-scattering film was studied,and the actual matting effect of the light-scattering film was analyzed.The results showed that when the mass ratio of CR-39 and G500-P was 7∶3,and the dosage of matting liquid added was 10 wt%,the transmittance of the light-scattering film reached 84.2%,and the haze was as high as 85.4%,which indicated that the prepared light-scattering film provided both high transmittance and haze properties.In addition,compared with the traditional method of directly blending with microspheres,incorporation of matting liquid could effectively solve the problem of agglomeration of microspheres during the blending process.