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实验研究了聚甲基丙烯酸甲脂(PMMA)掺杂生色团分散红DR19的电光聚合物的电晕极化特性。结合吸收光谱法和显微镜形貌分析了极化电压、极化温度以及极化时间对极化效果的影响。理论和实验分析得出极化电压增大可以增大聚合物内部极化电场,但电压过大会引起薄膜击穿而降低极化效果;而极化温度升高可以增大分子取向力,但在聚合物玻璃化温度以上会导致相分离;极化时生色团分子的取向随时间增大并逐渐达到动态平衡。实验结果表明:表征极化效果的序参数随极化电压的增大而先增大后减小,随极化温度的升高而先增大后减小,随极化时间的增长先增大后趋于稳定。
The corona polarization characteristics of electro-photopolymer polymethylmethacrylate (PMMA) doped chromophore disperse red DR19 were experimentally studied. The effects of polarization voltage, polarization temperature and polarization time on polarization were analyzed by absorption spectroscopy and microscopy. Theoretical and experimental analysis shows that the increase of polarization voltage can increase the internal polarization electric field of polymer, but the voltage is too large, which causes the film breakdown and decrease the polarization effect; while the increase of polarization temperature can increase the molecular orientation force, Above the glass transition temperature of the polymer leads to phase separation; the orientation of the chromophore molecules upon polarization increases with time and gradually reaches homeostasis. The experimental results show that the order parameters that characterize the polarization effect firstly increase and then decrease with the increase of polarization voltage, increase first and then decrease with the increase of polarization temperature, and then increase with the increase of polarization time After tends to be stable.