High heat-resistance liquid modified bimaleimide resin and preparation method thereof
A bismaleimide resin and bismaleimide technology are applied in the field of high heat-resistant liquid modified bismaleimide resin and its preparation, which can solve the problem of being unusable and not taking into account heat resistance. and other problems, to achieve the effect of easy control, excellent heat resistance, simple and reliable process
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Embodiment 1
[0054] In a 500ml glass bottle equipped with a thermometer, an addition funnel and a mechanical stirring device, add 80g of 3-aminobenzocyclobutene, raise the temperature to 135°C, and add 160g of 4,4'-bismaleoyl within 1 hour imine diphenylmethane, and continue to insulate the reaction for 2 hours to obtain a uniform and transparent brown-red prepolymer.
[0055] Cool down to 80°C within 30 minutes, add 36g of bisphenol A diallyl ether and 12g of divinylbenzene, and keep the temperature for 15 minutes.
[0056] After the system is cooled to room temperature, add 24 g of 2-methylimidazole / cobalt acetylacetonate butanone solution with a solute ratio of 10%, stir evenly, and evaporate the mixed solution on a rotary evaporator at 40°C to obtain a liquid brownish red Transparent resin.
[0057] The viscosity of the resin at 30°C is 289cP when tested by a rotational viscometer, showing excellent fluidity and excellent processing performance.
[0058] The curing activity of the ob...
Embodiment 2
[0061] In a 500ml glass bottle equipped with a thermometer, an addition funnel and a mechanical stirring device, add 80g of 3-aminobenzocyclobutene, raise the temperature to 135°C, and add 160g of 4,4'-bismaleoyl within 1 hour imine diphenyl ether, and continue to keep warm for 2 hours to obtain a uniform and transparent brown-red prepolymer.
[0062] Cool down to 80°C within 30 minutes, add 36g of bisphenol A diallyl ether and 12g of divinylbenzene, and keep the temperature for 15 minutes.
[0063] After the system is cooled to room temperature, add 24g of acetone solution of 2-methylimidazole / iron acetylacetonate with a solute ratio of 10%, stir evenly, and evaporate the mixed solution on a rotary evaporator at 30°C to remove the solvent to obtain a liquid brownish-red transparent resin.
Embodiment 3
[0065] In a 500ml glass bottle equipped with a thermometer, an addition funnel and a mechanical stirring device, add 80g of 3-aminobenzocyclobutene, raise the temperature to 135°C, and add 140g of 4,4'-bismaleoyl within 1 hour imine diphenyl ether, and continue to keep warm for 2 hours to obtain a uniform and transparent brown-red prepolymer.
[0066] Cool down to 80°C within 30 minutes, add 36g of bisphenol A diallyl ether and 12g of divinylbenzene, and keep the temperature for 15 minutes.
[0067] After the system is cooled to room temperature, add 22 g of 2-ethyl-4-methylimidazole / nickel acetylacetonate in acetone solution with a solute ratio of 10%, stir evenly, and evaporate the mixed solution on a rotary evaporator at 35°C to remove the solvent, namely A liquid brown-red transparent resin was obtained.
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Abstract
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