Abstract
In this work, benzoxazine/bismaleimide/cyanate ester (BOZ/BMI/BADCy) was prepared by bisphenol A benzoxazine, bisphenol A dicyanate, 4, 4′-bismaleimidodiphenyl methane, and organo-modified 2D montmorillonite (OMMt) nanoparticles. OMMt was synthesized and characterized using FTIR. The effect of different weight fraction of OMMt (0–5 wt%) on the dielectric, thermal, mechanical properties of the composites was investigated. All composites exhibited excellent dielectric properties and thermal stability endowed by BOZ/BMI/BADCy matrix. OMMt improves their dispersibility, alignment and interfacial strength and hence electrical conductivity and real permittivity increase with increasing OMMt loading, and a suitable addition of OMMt can enhance the mechanical properties, dielectric strength as well as reduce the dielectric loss of BOZ/BMI/BADCy terpolymer. The dielectric constant and dielectric loss of the sample with 4 wt% of OMMt filler was 3.56 and 0.004, at 1 kHz. The dielectric constant of the composites showed only a very small variation with frequency in the range 100–1 MHz. All these changes in properties are closely correlated to the OMMt/BOZ/BMI/BADCy nanocomposites, which could form an interaction interface structure in the system.
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Acknowledgments
This work was financially supported by National Natural Science Foundation of China (No. 51407134), China Postdoctoral Science Special Foundation (No. 2015T81028) and Natural Science Basic Research Plan in Shaanxi Province of China (Nos. 2014JQ6199, 2015JM5215).
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Wang, Y., Wu, G., Kou, K. et al. Mechanical, thermal conductive and dielectrical properties of organic montmorillonite reinforced benzoxazine/cyanate ester copolymer for electronic packaging. J Mater Sci: Mater Electron 27, 8279–8287 (2016). https://doi.org/10.1007/s10854-016-4834-5
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DOI: https://doi.org/10.1007/s10854-016-4834-5