Abstract: An adhesive in mica tape was prepared from epoxy resin E-44，using methyl-5- norbornene-2,3-dicarboxylic anhydride (MNA) and Tungma anhydride as curing agents. The effects of mix proportion on the mechanical，dielectric and heat resistance performance of the mica tape were investigated in the present work. The mica tape showed best performance，when molar ratio of MNA and Tungma anhydride reacted respectively with E-44 (MNA∶Tungma) was 5.5∶4.5. In this case，vertical flexural strength of mica tape was 332.79 MPa，lateral flexural strength was 319.06 MPa，lateral impact strength was 64.25 MJ/m2，vertical impact strength was 47.5 MJ/m2，dielectric strength was 64.62 MV/m and volume resistivity was 2.02×1013 Ω?m. Thermogravimetric (TG) analysis indicated excellent heat resistance of the MNA- Tungma -epoxy resin system.

Key words: methyl-5-norbornene-2,3-dicarboxylic anhydride, mica tape, mechanical properties, heat resistence

摘要： 采用甲基纳迪克酸酐（MNA）为环氧树脂主要固化剂，配合桐马酸酐固化环氧树脂E-44制备云母带黏合剂。研究了不同组分配合方案对云母带的力学性能、电学性能、耐热性能的影响。实验结果表明，MNA及桐马分别与E-44反应的摩尔比（MNA∶桐马）=5.5∶4.5时，云母带综合性能最优，纵向弯曲强度为332.79 MPa，横向弯曲强度为319.06 MPa，横向冲击强度为64.25 MJ/m2，纵向冲击强度为47.5 MJ/m2，介电强度为64.62 MV/m，体积电阻率为2.02×1013 Ω?m。且由热重分析（TG）知，甲基纳迪克-桐马-环氧体系具有相对良好的耐热性。

关键词: 甲基纳迪克酸酐, 云母带, 力学性能, 耐热性