Benzoxazine resin/ionic liquid composition

A technology of benzoxazine and ionic liquid, which is applied in the field of resin composition, can solve problems such as reducing the curing temperature, not paying attention to the benzoxazine/ionic liquid composition, reducing the curing temperature of benzoxazine, etc. Curing temperature, excellent performance, easy curing effect

Active Publication Date: 2013-04-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In 2008, Kawauchi et al. crosslinked bisphenol A benzoxazine resin in ionic liquid to obtain polybenzoxazine/ionic liquid hybrid material, which used ionic liquid 1-butyl-3-methyl Imidazolium triflate; however, no significant reduction in cure temperature was note

Method used

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  • Benzoxazine resin/ionic liquid composition
  • Benzoxazine resin/ionic liquid composition
  • Benzoxazine resin/ionic liquid composition

Examples

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preparation example Construction

[0104] Preparation method of benzoxazine resin / ionic liquid composition

[0105] According to another aspect of the present invention, the preparation of the benzoxazine resin / ionic liquid composition is provided, the method is realized by mixing the benzoxazine resin and the ionic liquid.

[0106] As the mixing method, a mixing method well known to those skilled in the art can be used, such as mechanical stirring mixing, solution mixing, melt mixing, assisted ultrasonic dispersion, high-speed stirring, and the like.

[0107] Thermosetting resin resin composition

[0108] According to still another aspect of the present invention, a thermosetting resin composition is provided, which comprises: the benzoxazine resin / ionic liquid composition according to the present invention, and other thermosetting resins and / or fillers.

[0109] As the other thermosetting resins, benzoxazine resins such as N-alkylbenzoxazine resins, N-phenylbenzoxazine resins, N-alicyclic benzoxazine res...

Embodiment 1

[0115] Prepare chlorinated N-allylpyridine ionic liquid and bisphenol A aniline type benzoxazine resin with the ratio (mass ratio) of 0.1:99.9 (preparation method of bisphenol A aniline type benzoxazine resin: prepare condensation Add 500ml of solvent toluene to the 1000ml three-necked flask of tube, stirring and thermometer, sequentially add 114g (0.5mol) of bisphenol A, 120ml (1mol) of aniline, and slowly add 60g (2mol) of paraformaldehyde under strong stirring in an ice-water bath. Stir vigorously under high pressure to mix the reactants evenly, and place them in an oil bath at 105°C for 4 hours. After the reaction, add 1 mol / L lye to stir and mix, then pour it into a separatory funnel to separate the product, and continue washing with lye. Finally, it was washed with deionized water to neutrality, poured into a porcelain dish and dried under vacuum at 60°C for 24 hours to obtain a light yellow solid (bisphenol A aniline-type benzoxazine) composition, and the preparation met...

Embodiment 2

[0118] In the same manner as in Example 1, a composition of chlorinated 1-allyl-3-vinylimidazole and bisphenol A aniline-type benzoxazine resin was prepared at a ratio (mass ratio) of 0.1:99.9.

[0119] The composition is subjected to DSC test, and the obtained DSC curve is shown in figure 2 , It was measured that the curing initiation temperature was 215°C, the curing peak temperature was 230°C and the curing termination temperature was 250°C.

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Abstract

The present invention relates to a benzoxazine resin/ionic liquid composition and preparation thereof, and a thermosetting resin composition containing the benzoxazine resin/ionic liquid composition, wherein a mass ratio of the ionic liquid to the benzoxazine resin is 0.1-50:99.9-50, the benzoxazine resin is a compound having a molecular structure containing a benzoxazine group or a substituted benzoxazine unit, a polymer or a mixture of the compound and the polymer, and the ionic liquid is an ionic liquid having an organic cationic alkyl side chain introduced with a functional group. According to the present invention, the ionic liquid is added to the composition, such that a curing temperature of the benzoxazine resin can be substantially reduced.

Description

technical field [0001] The invention relates to a resin composition, in particular to a benzoxazine resin / ionic liquid composition, which can effectively reduce the curing temperature of the resin. Background technique [0002] Benzoxazine is a new type of modified heterocyclic phenolic resin, which is a new type of thermosetting resin developed on the basis of traditional phenolic resin. It is a class of intermediates synthesized from phenolic compounds, aldehydes and amine compounds, and undergoes ring-opening polymerization under heating and / or catalytic conditions to form a cross-linked structure similar to phenolic resins. Benzoxazine not only has the excellent performance of traditional phenolic resin, but also has no small molecules released during the curing process, and the product has zero shrinkage. The polymer has the special advantages of good heat resistance, mechanical properties, high temperature resistance, and moisture resistance. There is flexible molecul...

Claims

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Application Information

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IPC IPC(8): C08G73/00C08L79/00C08K5/3445C08K5/3432C08K5/19
Inventor 徐日炜王维霞吴一弦余鼎声
Owner BEIJING UNIV OF CHEM TECH
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