高强度绝缘胶性能及热分解动力学研究  

Study on the Properties and Thermal Decomposition Kinetics of High-strength Insulating Adhesive

作　　者：李博弘[1] 陈泽明[1] 贾晓莹[1] 曹先启[1] 曹文鑫 关悦瑜[1] 王超[1] 薛金龙 LI Bohong;CHEN Zeming;JIA Xiaoying;CAO Xianqi;CAO Wenxin;GUAN Yueyu;WANG Chao;XUE Jinlong(Institute of Petrochemistry,Heilongjiang Academy of Sciences,Harbin 150040,China;School of Astronautics,Institute of Advanced Technology,Harbin Institute of Technology,Harbin 150020,China)

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150020

出　　处：《化学与粘合》2023年第5期389-391,共3页Chemistry and Adhesion

摘　　要：使用仪器分析方法分析了高强度绝缘胶的力学性能、黏度、热导率、体积电阻率和膨胀系数。采用热重分析法(TG),在空气气氛下分别以10、20、30、40℃/min的升温速率对丙烯酸酯基隔音复合材料的热分解进行了分析。实验结果表明高强度绝缘胶室温拉伸剪切强度为23.5 MPa,25℃黏度为92000 m Pa·s,导热率为0.353 W/m·K,体积电阻率为3.5×10^(15)Ω·cm。膨胀系数为5.44×10^(-5)℃^(-1),在空气中300℃失重率为0.14%~0.80%;采用Kissinger方程和Flynn-Wall-Ozawa方程对高强度绝缘胶热分解动力学常数进行了计算,分别得出高强度绝缘胶的热分解活化能为82.71 k J/mol和78.27 k J/mol。The mechanical properties,viscosity,thermal conductivity,volume resistivity and expansion coefficient of high-strength insulating adhesive are analyzed by instrument.The thermogravimetric analysis(TG)is used to analyze the thermal decomposition of acrylate based sound insulation composites at the heating rate of 10,20,30 and 40℃/min respectively in air atmosphere.The experimental results show that the tensile shear strength of high-strength insulating adhesive at room temperature is 23.5 MPa,the viscosity is 92000 mPa·s at 25℃,the thermal conductivity is 0.353 W/m·K,and the volume resistivity is 3.5×10^(15)Ω·cm.The expansion coefficient is 5.44×10^(-5)℃^(-1),the weight loss rate at 300℃in air is in the range of 0.14%~0.80%;The kinetic constants of thermal decomposition of high-strength insulating adhesive are calculated by Kissinger equation and Flynn Wall Ozawa equation.The activation energies of thermal decomposition of high-strength insulating adhesive are 82.71 kJ/mol and 78.27 kJ/mol respectively.

关 键 词：胶粘剂 绝缘 热分解 动力学 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ433.437[化学工程]