聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响

牛红林; 华懿魁; 史高飞; 陆红波; 冯奇斌; 吕国强

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聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响

材料物理和化学 | 更新时间：2020-08-12

- 聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响
- Effects of Curing Electric Field Frequency on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture
- 液晶与显示 2012年27卷第1期页码：21-25
- 作者机构：
  
  1. 特种显示技术教育部重点实验室,特种显示技术国家工程实验室, 现代显示技术省部共建国家重点实验室培育基地,安徽合肥 230009
  2. 合肥工业大学仪器科学与光电工程学院,安徽合肥 230009
- 作者简介：
- 基金信息：
  
  国家"();973"();计划项目(No.2010CB334704)();高等学校博士学科点专项科基金(No.20100111120006)();国家自
- DOI：
  中图分类号： O753+.2
- 收稿日期：2011-10-29，
  
  修回日期：2011-11-18，
  
  网络出版日期：2012-02-15，
  
  纸质出版日期：2012-02-15
- 稿件说明：
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牛红林, 华懿魁, 史高飞, 陆红波, 冯奇斌, 吕国强. 聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响[J]. 液晶与显示, 2012,27(1): 21-25

NIU Hong-lin, HUA Yi-kui, SHI Gao-fei, LU Hong-bo, FENG Qi-bin, LV Guo-qiang. Effects of Curing Electric Field Frequency on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture[J]. , 2012,27(1): 21-25
牛红林, 华懿魁, 史高飞, 陆红波, 冯奇斌, 吕国强. 聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响[J]. 液晶与显示, 2012,27(1): 21-25 DOI：

NIU Hong-lin, HUA Yi-kui, SHI Gao-fei, LU Hong-bo, FENG Qi-bin, LV Guo-qiang. Effects of Curing Electric Field Frequency on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture[J]. , 2012,27(1): 21-25 DOI：

摘要

研究了聚合时外加电场对聚合物稳定胆甾相液晶(PSCT)光电性能的影响。采用紫外光聚合诱导相分离法(PIPS)制备了聚合物稳定胆甾相液晶

通过改变光聚合时的外加电场频率控制聚合物网络结构

改善PSCT的光电性能。结果表明:电场频率影响聚合单体的扩散

从而影响聚合物网络形貌。聚合电场频率低

聚合单体扩散快

形成的聚合网络疏松

网孔较大

响应速度慢

关态透过率大

阈值和饱和电压小;聚合电场频率高

阻碍单体的扩散

形成的聚合物网络致密

网孔较小

响应速度快

关态透过率低

阈值电压和饱和电压大。

Abstract

The effects of curing electric field frequency on the electro-optic property of Polymer-Stabilized Cholesteric Texture (PSCT) is investigated. PSCT samples were prepared by means of polymerization induced phase separation (PIPS). By changing the curing electric field frequency

we can control the network morphology of PSCT and improve the electro-optic property. It was demonstrated that the diffusion of monomer and network morphology were related with curing electric field frequency. In addition

lower frequency promotes the diffusion of monomer and generally results in a open network with large void inside which often shows fast response

high closed transmittance

low threshold and low saturated voltage. On the adverse

higher frequency inhibits the diffusion and generally results in a closed network with smaller void inside which often shows slower response

lower transmittance

higher threshold and higher saturated voltage.

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Keywords

references

Dierking I. Polymer network-stabilized liquid crystals [J]. Adv. Mater,2000, 12(3):167-179.[2] Yin Y H, Li W B, Cao H. Effects of monomer structure on the morphology of poly-network and the electro-optical property of reverse-mode polymer-stabilized cholesteric texture [J]. J. Appl. Polymer Science,2009, 111(3):1353-1357.[3] Du Fang, Gauza Sebastian, Wu Shin-Tson. Influence of curing temperature and highbirefringence on the properties of polymerstabilized liquid crystals [J].Opt. Express,2003,11(22):2891-2896.[4] Bao Rui, Liu Cheng-Mei, Yang Deng-Ke.Smart bistable polymer stabilized cholesteric texture light shutter [J]. Appl. Phys. Express, 2009,2 (11):112401(1-3).[5] Dierking I, Kosbar L L,Afzali-Ardakani A,et al. Two-stageswitching behavior of polymer stabilized cholesteric textures [J]. J. Appl. Phys, 1997, 81(7):3007-3013.[6] Held I, Dierking L L, Kosbar A C, et al. polymer network structure and electro-optic performance of polymer stabilized cholesteric textures II. The effect of UV curing condition [J] .Liquid Crystals, 2003,24(3):397-406.[7] 王庆兵,凌志华,李海峰,等.液晶中形成的聚合物网络织构及形貌的研究 [J]. 液晶与显示, 1999,14(2):94-103.[8] 刘国柱,黄子强,杨文君,等. 低阈值电压聚合物分散性液晶膜的电光特性 [J]. 液晶与显示, 2009, 24(3):383-388.[9] 夏亮,徐琼,陆红波,等. 聚合物分散胆甾相液晶相形态调控与光电性能 [J]. 液晶与显示, 2011, 26(3):306-310.[10] 谢建辉,黄子强.低阈值高对比度PDLC薄膜的制备 [J]. 液晶与显示, 2011,26(1):49 -53.[11] Ma Ji, Shi Lei, Yang Deng-Ke. Bistable polymer stabilized cholesteric texture light shutter [J]. Appl. Phys. Express, 2010, 3(2):021702 (1-3).

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