本文为稳定5438—1环氧粉云母复合绝缘的凝胶化性能,研究了玻璃表面浸润剂的影响作用,同时探讨了其作用机理。结果表明:石蜡型浸润剂使环氧 TOA 体系反应活化能降低,凝胶时间缩短,即起催化加速作用。催化效率与石蜡乳剂的浓度成正比。...本文为稳定5438—1环氧粉云母复合绝缘的凝胶化性能,研究了玻璃表面浸润剂的影响作用,同时探讨了其作用机理。结果表明:石蜡型浸润剂使环氧 TOA 体系反应活化能降低,凝胶时间缩短,即起催化加速作用。催化效率与石蜡乳剂的浓度成正比。本文还对由~#683、KH—560及石蜡型浸润剂组成的环氧 TOA 体系进行了性能对比,研究中发现;KH—560型浸润剂对该体系凝胶化性能的影响小,与环氧胶相容性及电气性能均好,其化学计量方便,是较理想的偶联剂型浸润剂。展开更多
Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide, including cyclohexanol, cyclohexanone, etc. To obtain high-purity 1,2-epoxycyclohexane, the ...Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide, including cyclohexanol, cyclohexanone, etc. To obtain high-purity 1,2-epoxycyclohexane, the by-products must be removed through rectification. Refining 1,2-epoxycyclohexane through rectification requires vapor-liquid equilibrium(VLE) data of the related system. Therefore, the VLE data of 1,2-epoxycyclohexane- cyc-lohexanone system were measured at 101.3 kPa using an improved EC-2 VLE still. The thermodynamic consistency of the data was then tested by Herington's method and the rigorous point-to-point method. The results obtained were exemplary. The VLE data were correlated by the Wilson and non-random two-liquid(NRTL) equations, using the error sum squares of the vapor composition as the objective function to obtain the model parameters. The difference between the calculated values and the experimental data is minor, indicating that the VLE data are suitable for engineering design.展开更多
Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide,including cyclohexanol,cyclohexanone,etc.To obtain high-purity 1,2-epoxycyclohexane, the by-p...Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide,including cyclohexanol,cyclohexanone,etc.To obtain high-purity 1,2-epoxycyclohexane, the by-products and unreacted cyclohexene must be removed through rectification,in which the vapor-liquid equilibrium(VLE)data of the system are needed.In this study,the VLE data of cyclohexene-cyclohexanol system were studied at 101.3 kPa using an improved EC-2 VLE still.The thermodynamic consistency of the data was examined by Herington's method.The results obtained were exemplary.The VLE data were correlated by the Wilson equation. The difference between the calculated values and the experimental data is minor,indicating that the VLE data are suitable for engineering design.展开更多
文摘本文为稳定5438—1环氧粉云母复合绝缘的凝胶化性能,研究了玻璃表面浸润剂的影响作用,同时探讨了其作用机理。结果表明:石蜡型浸润剂使环氧 TOA 体系反应活化能降低,凝胶时间缩短,即起催化加速作用。催化效率与石蜡乳剂的浓度成正比。本文还对由~#683、KH—560及石蜡型浸润剂组成的环氧 TOA 体系进行了性能对比,研究中发现;KH—560型浸润剂对该体系凝胶化性能的影响小,与环氧胶相容性及电气性能均好,其化学计量方便,是较理想的偶联剂型浸润剂。
基金Supported by the Key Scientific and Technology Project of Henan Province(132102210050)
文摘Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide, including cyclohexanol, cyclohexanone, etc. To obtain high-purity 1,2-epoxycyclohexane, the by-products must be removed through rectification. Refining 1,2-epoxycyclohexane through rectification requires vapor-liquid equilibrium(VLE) data of the related system. Therefore, the VLE data of 1,2-epoxycyclohexane- cyc-lohexanone system were measured at 101.3 kPa using an improved EC-2 VLE still. The thermodynamic consistency of the data was then tested by Herington's method and the rigorous point-to-point method. The results obtained were exemplary. The VLE data were correlated by the Wilson and non-random two-liquid(NRTL) equations, using the error sum squares of the vapor composition as the objective function to obtain the model parameters. The difference between the calculated values and the experimental data is minor, indicating that the VLE data are suitable for engineering design.
基金Supported by the Outstanding Personality Innovation Funds of Henan Province(0121001900)
文摘Many by-products are generated in the process of oxidizing cyclohexene to produce 1,2-epoxycyclohexane by hydrogen peroxide,including cyclohexanol,cyclohexanone,etc.To obtain high-purity 1,2-epoxycyclohexane, the by-products and unreacted cyclohexene must be removed through rectification,in which the vapor-liquid equilibrium(VLE)data of the system are needed.In this study,the VLE data of cyclohexene-cyclohexanol system were studied at 101.3 kPa using an improved EC-2 VLE still.The thermodynamic consistency of the data was examined by Herington's method.The results obtained were exemplary.The VLE data were correlated by the Wilson equation. The difference between the calculated values and the experimental data is minor,indicating that the VLE data are suitable for engineering design.
