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High heat resistance liquid modified bismaleimide resin and preparation method thereof

A technology of bismaleimide resin and bismaleimide, which is applied in the field of high heat resistance liquid modified bismaleimide resin and its preparation, can solve the problem of not taking into account the heat resistance and the inability to use and other problems, to achieve excellent heat resistance, easy to control, and meet the effects of industrialization promotion

Active Publication Date: 2017-08-29
SHAANXI TIANCE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glass transition temperature of this resin curing system can only reach 261 ° C, without taking into account the improvement of heat resistance, and cannot be used in fields that require a glass transition temperature higher than 280 ° C or higher heat resistance levels

Method used

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  • High heat resistance liquid modified bismaleimide resin and preparation method thereof
  • High heat resistance liquid modified bismaleimide resin and preparation method thereof
  • High heat resistance liquid modified bismaleimide resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In a 500ml glass bottle equipped with a thermometer, a feeding funnel and a mechanical stirring device, add 80g of 3-aminobenzocyclobutene, raise the temperature to 135℃, and add 160g of 4,4'-bismaleyl within 1 hour The iminodiphenylmethane was kept for 2 hours to obtain a uniform transparent brown-red prepolymer.

[0055] The temperature was lowered to 80°C within 30 minutes, 36 g of bisphenol A diallyl ether and 12 g of divinylbenzene were added, and the temperature was kept 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%. After stirring, the mixture is evaporated on a rotary evaporator at 40°C to remove the solvent to obtain a liquid brownish red Transparent resin.

[0057] The resin has a viscosity of 289cP at 30°C tested by a rotary viscometer, showing excellent fluidity and excellent processing performance.

[0058] The curing activity of the obtaine...

Embodiment 2

[0061] In a 500ml glass bottle equipped with a thermometer, a feeding funnel and a mechanical stirring device, add 80g of 3-aminobenzocyclobutene, raise the temperature to 135℃, and add 160g of 4,4'-bismaleyl within 1 hour The imine diphenyl ether was kept and reacted for 2 hours to obtain a uniform and transparent brown-red prepolymer.

[0062] The temperature was lowered to 80°C within 30 minutes, 36 g of bisphenol A diallyl ether and 12 g of divinylbenzene were added, and the temperature was kept for 15 minutes.

[0063] After the system is cooled to room temperature, add 24 g of 2-methylimidazole / iron acetylacetonate solution in acetone with a solute ratio of 10%. After stirring, the mixture is evaporated on a rotary evaporator at 30°C to remove the solvent, and the liquid is brown-red and 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, heat up to 135℃, and add 140g of 4,4'-bismaleyl within 1 hour The imine diphenyl ether was kept and reacted for 2 hours to obtain a uniform and transparent brown-red prepolymer.

[0066] The temperature was lowered to 80°C within 30 minutes, 36 g of bisphenol A diallyl ether and 12 g of divinylbenzene were added, and the temperature was kept for 15 minutes.

[0067] After the system is cooled to room temperature, add 22 g of 2-ethyl-4-methylimidazole / nickel acetylacetonate solution in acetone with a solute ratio of 10%. After stirring, the mixture is evaporated on a rotary evaporator at 35°C to remove the solvent. A liquid brown-red transparent resin is obtained.

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Abstract

The invention relates to high heat-resistance liquid modified bimaleimide resin and a preparation method thereof. In the current bismaleimide resin modification method, defects that melting temperature is high, a winding moulding technology cannot be satisfied, and heat resistance enhancement is not considered are existed in the current bimaleimide resin modification methods, 3-aminobenzocyclobutene and a bimaleimide monomer are subjected to a Michael addition fuse polymerization to form a performed polymer, an active diluent is added after cooling the performed polymer for insulation, a solution with a dissolved catalyst is added after cooling the material, then the solution is uniformly mixed, and then the solution with the dissolved catalyst can be removed through vacuum steaming to obtain the high heat-resistance liquid modified bimaleimide resin. The provided resin system presents a flow liquid state under normal temperature, is an unusual type in a bimaleimide resin field, presents good processing technology, is suitable for moulding of a plurality of composite materials, especially suitable for RTM (Resin Transfer Molding) and winding, can be taken as base resin of a high-grade copper-clad plate, and also can be used for advanced composite materials or high temperature-resistance adhesives in the fields of aviation spaceflight and traffic transport.

Description

Technical field [0001] The invention belongs to the technical field of bismaleimide resins, and specifically relates to a liquid modified bismaleimide resin with high heat resistance and a preparation method thereof. Background technique [0002] Bismaleimide can be considered as a high-performance thermosetting resin derived from polyimide, which combines the ease of processing of epoxy and other resins with the high strength, high heat resistance and electrical insulation of polyimide As well as weather resistance, it has become one of the most promising composite resin matrixes in the aerospace field, and has made or will make great progress in the fields of microelectronics and military industry. [0003] However, Shuangma resin also has some shortcomings, which hinder its wide application in certain fields. There are three main ones: the resin has a high softening point, a higher curing temperature, and the cured product is brittle. For more than half a century, scholars at h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/12
Inventor 赵宗严江汛张鸿翔
Owner SHAANXI TIANCE NEW MATERIAL TECH
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