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通过改变液晶的含量、固化温度以及紫外光强度研究了聚合物分散液晶(PDLC)盒的相分离。混合紫外光固化的聚合物基质和具有正介电各向异性的向列相液晶,并将混合物注入到以ITO玻璃为衬底的液晶盒中。然后,照射紫外光产生分离制成PDLC膜。在紫外光照射液晶盒期间,测量了盒的电光特性与时间的依赖关系。利用激光衍射粒子尺寸分析仪,无破坏地测量了微滴尺寸及其分布与紫外光强的依赖关系。开始照射紫外光之后的某一特定期间,透过光强急剧下降,同时阻抗增大,电容开始增大然后下降。测量了紫外光强与PDLC盒电光特性的依赖关系并对其进行了讨论。
The phase separation of polymer dispersed liquid crystal (PDLC) cells was investigated by changing the content of liquid crystal, curing temperature and UV intensity. The UV-cured polymer matrix and the nematic liquid crystal with the positive dielectric anisotropy are mixed and the mixture is injected into a liquid crystal cell with an ITO glass substrate. Then, ultraviolet light is generated and separated into a PDLC film. During the irradiation of the liquid crystal cell with ultraviolet light, the time-dependent dependence of the electro-optical properties of the cell was measured. Using a laser diffraction particle size analyzer, the dependence of the droplet size and its distribution on the UV intensity was measured without damage. After a certain period of time after the start of ultraviolet light irradiation, the intensity of light transmitted through the lens drops sharply while the impedance increases, and the capacitance begins to increase and then drops. The dependence of the intensity of UV light on the electro-optic properties of PDLC cells was measured and discussed.