Abstract
Thermostable nanocomposites based on interpenetrating polymer network bismaleimide/cyanate ester (BMI/CE) copolymer, derived from bisphenol A dicyanate, 4,4′-bismaleimidodiphenyl methane, and doped by 1–5 wt% organo-modified 2D montmorillonite (OMMt) nanoparticles were synthesized and characterized using a dielectric strength tester, concept 40 impedance analyzer, scanning electron microscope (SEM), dynamic mechanical analysis, and thermogravimetric analysis techniques. OMMt improves the dispersibility, alignment and interfacial strength of these nanocomposites, the electrical conductivity increase with increasing OMMt loading, and a suitable addition of OMMt can enhance the mechanical properties and dielectric property of BMI/CE copolymer. SEM analysis shows distinct characteristics of a ductile fracture of the blends. In addition, the OMMt/BMI/CE nanocomposites have a better thermal stability and a higher thermal conductivity compared to those of BMI/CE resin with the increasing of OMMt content. All of these changes in properties are closely correlated with the OMMt/BMI/CE nanocomposites, which could form an interaction interface structure in the system.
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Acknowledgments
This work was financially supported by the National Science Foundation of China (No. 51407134), (Innovative Research Group, No. 51221005), 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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Wu, G., Cheng, Y., Wang, K. et al. Fabrication and characterization of OMMt/BMI/CE composites with low dielectric properties and high thermal stability for electronic packaging. J Mater Sci: Mater Electron 27, 5592–5599 (2016). https://doi.org/10.1007/s10854-016-4464-y
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DOI: https://doi.org/10.1007/s10854-016-4464-y