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1. 石家庄诚志永华显示材料有限公司,河北 石家庄,050091
2. 河北省平板显示材料工程技术研究中心,河北 石家庄,050091
Received:25 November 2014,
Revised:17 December 2014,
Published:05 August 2015
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高红茹, 温刚, 熊会茹, 崔青. 一种反型PNLC电光特性曲线的研究[J]. 液晶与显示, 2015,30(4): 553-558
GAO Hong-ru, WEN Gang, XIONG Hui-ru, CUI Qing. E-O properties of reverse-polymer network liquid crystal film[J]. , 2015,30(4): 553-558
高红茹, 温刚, 熊会茹, 崔青. 一种反型PNLC电光特性曲线的研究[J]. 液晶与显示, 2015,30(4): 553-558 DOI: 10.3788/YJYXS20153004.0553.
GAO Hong-ru, WEN Gang, XIONG Hui-ru, CUI Qing. E-O properties of reverse-polymer network liquid crystal film[J]. , 2015,30(4): 553-558 DOI: 10.3788/YJYXS20153004.0553.
采用紫外光聚合分离法使混合体系(可光聚合单体/液晶/光引发剂)产生相分离
制备了以双官能团丙烯酸酯为基体的反型聚合物网络液晶膜材料。采用液晶光电测试仪测试了光引发剂1-羟基环己基苯甲酮(IRG184)浓度和不同种类液晶盒如平行盒和反平行盒对反型PNLC液晶膜的电光性能的影响。研究结果表明
当光引发剂IRG184浓度为0.2%时
采用双官能团丙烯单体材料作为可光聚合单体
选择光学各向异性和介电各向异性适当的向列相液晶D5
混合搅拌均匀以后灌注于盒厚7 m的反平行排列液晶盒中
在光强为18 mW/cm
2
、波长主要为365 nm的紫外光下
温度控制在25~30 ℃使其聚合
所得反型PNLC膜的电光特性曲线最佳
如阈值电压、工作电压等特性最好
并对研究结果进行了相关的讨论。
The UV polymerization-induced phase separation (PIPS) method was introduced to prepare the reverse-polymer network liquid crystal (PNLC) films with difunctional acrylate as main structure from the system contained photo-curable monomers
liquid crystal (LC) and photo initiator.The concentration of the photo-initiator 1-hydroxy Cyclohexane benzophenone (IRG184) was changed and the type of liquid crystal cells and their effects on the electro-optical properties of the reverse-polymer network liquid crystal (PNLC) were tested by LCT-5016.The results showed that the electro-optic curve (in terms of the properties such as threshold voltage and operating voltage) of the reverse-PNLC film was the best
when the condition was optimized as follow: the intensity of UV light was 18 mW/cm
2
the main wavelength was 365 nm
the temperature was between 25~30 ℃
the concentration of the photo-initiator IRG184 was 0.2%
the propylene monomer with double function groups was chosen as the photo-curable monomers
and the mixture was filled in the reverse parallel arrangement cell with 7 m thickness.
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