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以溶致相分离的方法制备了PMMA基的PDLC,并首次对影响其光开关效应的因素做了较为系统的研究。结果表明,液晶含量从40%增加到50%使得PDLC体系的透过率升高了近20%(从62%到80%),从而减弱了光开关效应。进一步增加液晶含量不提高体系的透过率,却使光开关效应愈发不明显;固化温度从室温(22度)增大到液晶清亮点附近(55度)则显著提高了光开关效应。
PMMA-based PDLC was prepared by lytic phase separation method, and for the first time, the factors influencing the optical switching effect were systematically studied. The results show that increasing the liquid crystal content from 40% to 50% increases the transmittance of the PDLC system by nearly 20% (from 62% to 80%), thus attenuating the optical switching effect. Further increasing the liquid crystal content did not increase the transmittance of the system, but the optical switching effect became less obvious. The curing temperature increased from room temperature (22 degrees) to near the liquid crystal clear point (55 degrees), which significantly improved the optical switching effect.