Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 29, Issue 1, Pages 195-204Publisher
SPRINGER
DOI: 10.1007/s10854-017-7904-4
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Funding
- Doctoral Program of Higher Education of China [20136102110049]
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A novel 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) functionalized hyperbranched polysiloxane (HBPEp-DOPO) with considerable epoxy groups was synthesized. The structure was characterized by Fourier transform infrared (FTIR) spectra and nuclear magnetic resonance (H-1-NMR). HBPEp-DOPO was then introduced into O,O'-diallylbisphenol A/4,4'-bismaleimidodiphenyl methane(DBMI) resin to develop modified composite with excellent dielectric and thermal properties as well as simultaneously improved comprehensive performance. The incorporation of HBPEp-DOPO not only remarkably increased the dielectric, mechanical, and thermal properties, but also obviously improved the flame retardancy. Compared with neat DBMI resin, HBPEp-DOPO/DBMI resins exhibited decreased dielectric loss with increasing the content of HBPEp-DOPO. Besides, adding 10 wt% HBPEp-DOPO could change the UL-94V of DBMI from V-2 to V-0. Moreover, HBPEp-DOPO/DBMI exhibited an improved mechanical property and thermal stability at a small addition amount. These attractive features allows the modified hyperbranched polysiloxane to have broad potential applications in cutting-edge industries, especially in electronic and electric insulating fields.
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