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用光聚合诱导相分离法制备了3种不同聚合物基体的聚合物分散液晶(PDLC)膜,研究了液晶含量和固化时间对PDLC透光率及膜形态的影响,考察了不同聚合物基体对PDLC电光性能的影响。结果表明,聚合物单体反应活性越高,达到关态下最低透过率所需的固化时间越短,丙烯酸仅需10 s,而甲基丙烯酸甲酯却需360 s;聚合物与液晶颗粒之间的相互作用越强,PDLC膜的阈值电压越高,丙烯酸的阈值电压至少是其他两者的5倍。
Three kinds of polymer dispersed liquid crystal (PDLC) films with different polymer matrixes were prepared by photopolymerization induced phase separation. The effects of liquid crystal content and curing time on the transmittance and film morphology of PDLC were investigated. The effects of different polymer matrix pairs Effect of PDLC electro-optic properties. The results showed that the higher the reactivity of the polymer monomer, the shorter the curing time required to reach the lowest transmittance in the off state, the time required for acrylic acid to be 10 s, and the time for the methyl methacrylate to take 360 s; the polymer and the liquid crystal particles The stronger the interaction between the two is, the higher the threshold voltage of the PDLC film is, and the threshold voltage of acrylic acid is at least 5 times higher than the other two.