苯甲酸乙酯与邻苯二甲酸二乙酯混合液体的介电谱测量与分析

The Dielectric Spectrum Measurement and Analysis of Ethyl Benzoate and Diethyl Phthalate Mixed Liquids

利用介电谱方法对x苯甲酸乙酯+(1-x)邻苯二甲酸二乙酯(x=10%、20%、30%)的混合液体进行了测量,分析了1~106Hz频率下变温介电谱中α弛豫过程体系的玻璃化转变温度Tg和激活能随配比组分的变化结果,表明:玻璃化转变温度Tg和激活能E都随着配比组分的增加逐渐下降,激活能随着玻璃化转变温度的升高而增大.

The mixed liquids of x ethyl benzoate ＋（1-x） diethyl phthalate （x=10%, 20%, 30%） are measured by dielectric spectroscopy in the frequency range of 1-106 Hz, and the concentration dependent glass transition temperature and activation energy of α relaxation are analyzed. The results show that glass transition temperature and activation energy both reduce with the increased concentration and have the similar variation trend, The activation energy increases with the rise of glass transition temperature.