A copolymer of bismaleimide-diallylbisphenol A-diphenylsilandiol was synthesized andthe copolymerization was studied by using N-phenylmaleimide, bisphenol A and diphenyl-silandiol as model compounds. The copolymer cou...A copolymer of bismaleimide-diallylbisphenol A-diphenylsilandiol was synthesized andthe copolymerization was studied by using N-phenylmaleimide, bisphenol A and diphenyl-silandiol as model compounds. The copolymer could be well cured around 200℃, andthe cured resins had good thermal stability In the range of 170-210℃, a higher curingtemperature was favorable to obtain more thermal stable resin by reducing the content ofdiphenylsilandiol cyclo-homopolymer in resin which would spoil its thermal展开更多
The curing process of chemical reacton between flexible unsaturated polymer resin and diphenylmethane bismaleimides which have been chain-prolonged by diaminodiphenylmethane is presented, also the kineties parameters ...The curing process of chemical reacton between flexible unsaturated polymer resin and diphenylmethane bismaleimides which have been chain-prolonged by diaminodiphenylmethane is presented, also the kineties parameters and curing technology are investigated.展开更多
The blend was synthesised with bismaleimide(BMI)resin and bisphenol A-based cyanate ester(BADCy)resin.The BMI/BADCy copolymer showed excellent dielectric and thermal conductivity properties.The volume resistivity of t...The blend was synthesised with bismaleimide(BMI)resin and bisphenol A-based cyanate ester(BADCy)resin.The BMI/BADCy copolymer showed excellent dielectric and thermal conductivity properties.The volume resistivity of the copolymer was a little lower than BADCy system.The volume resistivity of blend was 7.8×10^(15)Ω·cm when the BMI content was 20 wt%,which still showed good insulation performance.The dielectric property of modified BADCy copolymer remained the good stability from 0.1 Hz to 1 MHz.Compared to pure BADCy system,the breakdown property of BMI/BADCy blend reached the maximum value of 77.9 kV/mm when the content of BMI was 20 wt%,which was still about 1.22 times.The thermal property and thermal conductivity property of the copolymer were higher than BADCy system.展开更多
Many factors that affect the flame resistance of the modified BMI system were studied, including the effect of different content of P4, C24H29Cl21/ZnO3B2O3·5H2O and C24H29Cl21/MoO3 on Oxygen Index of the modified...Many factors that affect the flame resistance of the modified BMI system were studied, including the effect of different content of P4, C24H29Cl21/ZnO3B2O3·5H2O and C24H29Cl21/MoO3 on Oxygen Index of the modified Bismaleimide resin. The thermal stability and mechanical properties of the cured BMI resin were also measured. It showed that this new kind of modified bismaleimide resin had nice fire resistance , excellent thermal stability and mechanical properties.展开更多
The chemorheology of bismaleimide(BMI)resin system comprised of 4,4’-bismaleimi-dodiphenyl-methane,4,4’-diaminodiphenyl-methane,phenoltype epoxy resin,and carboxyl-terminated butadi-ene-acrylonitrile rubber was inve...The chemorheology of bismaleimide(BMI)resin system comprised of 4,4’-bismaleimi-dodiphenyl-methane,4,4’-diaminodiphenyl-methane,phenoltype epoxy resin,and carboxyl-terminated butadi-ene-acrylonitrile rubber was investigated.Thermal anal-ysis techniques were employed to obtain kinetic and net-work parameters which is necessary for the developmentof a phenomenological viscosity model based on a modi-fied version of the Wiliams-Landel-Ferry(WLF)equa-tion.The model predictions agreed well with experimen-tal value of viscosity.展开更多
文摘A copolymer of bismaleimide-diallylbisphenol A-diphenylsilandiol was synthesized andthe copolymerization was studied by using N-phenylmaleimide, bisphenol A and diphenyl-silandiol as model compounds. The copolymer could be well cured around 200℃, andthe cured resins had good thermal stability In the range of 170-210℃, a higher curingtemperature was favorable to obtain more thermal stable resin by reducing the content ofdiphenylsilandiol cyclo-homopolymer in resin which would spoil its thermal
文摘The curing process of chemical reacton between flexible unsaturated polymer resin and diphenylmethane bismaleimides which have been chain-prolonged by diaminodiphenylmethane is presented, also the kineties parameters and curing technology are investigated.
基金This work was financially supported by the NSFC(no.51407134)China Postdoctoral Science Foundation(nos.2016M590619,2016M601878)+1 种基金Natural Science Foundation of Shandong Province(no.ZR2016EEQ28)Special Scientific Research Program of Shaanxi Provincial Department of Education(no.16JK1043)。
文摘The blend was synthesised with bismaleimide(BMI)resin and bisphenol A-based cyanate ester(BADCy)resin.The BMI/BADCy copolymer showed excellent dielectric and thermal conductivity properties.The volume resistivity of the copolymer was a little lower than BADCy system.The volume resistivity of blend was 7.8×10^(15)Ω·cm when the BMI content was 20 wt%,which still showed good insulation performance.The dielectric property of modified BADCy copolymer remained the good stability from 0.1 Hz to 1 MHz.Compared to pure BADCy system,the breakdown property of BMI/BADCy blend reached the maximum value of 77.9 kV/mm when the content of BMI was 20 wt%,which was still about 1.22 times.The thermal property and thermal conductivity property of the copolymer were higher than BADCy system.
基金Funded by the Ministry of National Defense Industry.
文摘Many factors that affect the flame resistance of the modified BMI system were studied, including the effect of different content of P4, C24H29Cl21/ZnO3B2O3·5H2O and C24H29Cl21/MoO3 on Oxygen Index of the modified Bismaleimide resin. The thermal stability and mechanical properties of the cured BMI resin were also measured. It showed that this new kind of modified bismaleimide resin had nice fire resistance , excellent thermal stability and mechanical properties.
文摘The chemorheology of bismaleimide(BMI)resin system comprised of 4,4’-bismaleimi-dodiphenyl-methane,4,4’-diaminodiphenyl-methane,phenoltype epoxy resin,and carboxyl-terminated butadi-ene-acrylonitrile rubber was investigated.Thermal anal-ysis techniques were employed to obtain kinetic and net-work parameters which is necessary for the developmentof a phenomenological viscosity model based on a modi-fied version of the Wiliams-Landel-Ferry(WLF)equa-tion.The model predictions agreed well with experimen-tal value of viscosity.
