Remoldable bismaleimide resin and application thereof

A bismaleimide resin, maleimide resin technology, applied in the field of remodelable bismaleimide resin and its preparation, remodeling, thermosetting resin and its preparation, can solve the problem of thermosetting SMPs. Remodeling, poor heat resistance and poor mechanical properties, to achieve the effect of good shape memory function, high thermal stability, good heat resistance

Active Publication Date: 2019-10-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shape memory polymers (SMPs) have broad application prospects in the fields of space self-deploying structures, shape-deformable structures, intelligent jet propulsion systems, and high-temperature sensors and actuators, but traditional thermosetting SMPs cannot be reshaped, and the existing technologies developed Remodelable thermoset SMPs also suffer from poor heat resistance and mechanical properties due to the limited properties of the remodelable thermoset matrix.

Method used

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  • Remoldable bismaleimide resin and application thereof
  • Remoldable bismaleimide resin and application thereof
  • Remoldable bismaleimide resin and application thereof

Examples

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preparation example Construction

[0050] The preparation method of remodeling bismaleimide resin of the present invention is as follows:

[0051] (1) In the presence of quaternary ammonium salt, react 2-allylphenyl glycidyl ether with terephthalic acid to prepare bis(3-(2-allylphenoxy)-2-hydroxypropyl) terephthalates;

[0052] (2) Mix bis(3-(2-allylphenoxy)-2-hydroxypropyl) terephthalate, bismaleimide, and zinc compound to obtain remodelable bismaleimide imide resin system;

[0053] (3) Curing and post-processing the remodelable bismaleimide resin system to obtain the remodelable bismaleimide resin.

Embodiment 1

[0055] 1) Preparation of 2-allylphenyl glycidyl ether

[0056] On a mass basis, mix 120g of 2-allylphenol, 140g of sodium hydroxide, 10g of tetrabutylammonium bromide and 230g of tetrahydrofuran, and insulate and react at 35°C for 1.5h under stirring conditions to obtain solution A; Slowly add 270 g of epichlorohydrin dropwise, and keep stirring at 35° C. for 6 hours to react; after the reaction, vacuum rotary evaporation removes tetrahydrofuran and epichlorohydrin to obtain a crude product. The crude product was washed successively with saturated ammonium chloride solution (200 mL×2), deionized water (200 mL×2), and finally separated and purified by chromatography to obtain a yellow transparent liquid, namely 2-allylphenyl Glyceryl ether, the yield is about 93%, its reaction formula and 1 H-NMR see attached figure 1 and 2 .

[0057] 2) Preparation of bis(3-(2-allylphenoxy)-2-hydroxypropyl)terephthalate

[0058] On a mass basis, mix 120g 2-allylphenyl glycidyl ether, 45g ...

Embodiment 2

[0100] 1) Preparation of 2-allylphenyl glycidyl ether

[0101] On a mass basis, mix 120g of 2-allylphenol, 100g of sodium hydroxide, 5g of tetramethylammonium bromide and 200g of tetrahydrofuran, and insulate and react for 1 hour at 25°C with stirring to obtain solution A; 250 g of epichlorohydrin was added dropwise, and the mixture was stirred and reacted at 25° C. for 6 hours; after the reaction was completed, tetrahydrofuran and epichlorohydrin were removed by vacuum rotary evaporation to obtain a crude product. The crude product was washed successively with saturated ammonium chloride solution (200 mL×2), deionized water (200 mL×2), and finally separated and purified by chromatography to obtain a yellow transparent liquid, namely 2-allylphenyl Glyceryl ether, the yield is about 90.1%.

[0102] 2) Preparation of bis(3-(2-allylphenoxy)-2-hydroxypropyl)terephthalate

[0103] By mass, mix 120g of 2-allylphenyl glycidyl ether, 40g of terephthalic acid, 5g of tetramethylammoni...

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Abstract

The invention discloses a remoldable bismaleimide resin and an application thereof. The remoldable bismaleimide resin is prepared by the following steps: blending 2-allylphenyl glycidyl ether with terephthalic acid in acetonitrile, carrying out an esterification reaction with a quaternary ammonium salt as a catalyst to obtain a bis(3-(2-allylphenoxy)-2-hydroxypropyl)terephthalate containing a reversible dynamic group; and uniformly mixing the bis(3-(2-allylphenoxy)-2-hydroxypropyl)terephthalate with bismaleimide, and curing the obtained mixture to obtain the remoldable bismaleimide resin. Theremoldable bismaleimide resin prepared in the present invention has excellent heat resistance and excellent mechanical properties, and can be remolded under a hot pressing condition. The preparation method of the remoldable bismaleimide resin has the characteristics of wide sources of raw materials, and simple process, and the has remoldable bismaleimide resin broad application prospects in industrial fields of aerospace, transportation, electronic information, new energy and insulated electrics.

Description

technical field [0001] The invention relates to a thermosetting resin and a preparation method thereof, in particular to a remodelable bismaleimide resin and a preparation and remodeling method thereof, belonging to the technical field of polymer materials. Background technique [0002] Thermosetting resin is an important class of polymer materials, accounting for about 18% of the total polymer. Thermosetting resins are widely used in many fields such as electronic information, energy, aerospace, transportation, etc. as composite material matrix, coating, adhesive, etc. With the increasingly serious problem of environmental pollution and the concept of green and sustainable development, the recycling and reuse of thermosetting materials after their effective service life has become an urgent problem to be solved. At the same time, with the rapid development of electronic technology, the life cycle of a large number of electronic products and smart devices has been significa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/12C08L79/08
CPCC08G73/124C08L79/085C08G2280/00C08L2201/12C08L2201/08B29B7/002B29B7/826C08G73/12C08G73/126B29C43/003B29B9/02B29C43/52B29K2096/00
Inventor 顾嫒娟宁礼健梁国正袁莉
Owner SUZHOU UNIV
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