Benzoxazine resin/ionic liquid composition

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

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

[0102] Preparation method of benzoxazine resin / ionic liquid composition

[0103] According to another aspect of the present invention, there is provided the preparation of a benzoxazine resin / ionic liquid composition by mixing a benzoxazine resin with an ionic liquid.

[0104] As a 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.

[0105] Thermosetting resin resin composition

[0106] According to yet another aspect of the present invention, there is provided a thermosetting resin composition comprising: the benzoxazine resin / ionic liquid composition according to the present invention, and other thermosetting resins and / or fillers.

[0107] As the other thermosetting resin, benzoxazine resins such as N-alkylbenzoxazine resin, N-phenylbenzoxazine resin, N-alicyclic benzoxazine resin, N-allyl can be used Benzo...

Embodiment 1

[0113] With the ratio (mass ratio) of 0.1: 99.9, prepare N-butylpyridine chloride ionic liquid and bisphenol A aniline-type benzoxazine resin (preparation method: successively in a 1000ml there-necked flask equipped with a condenser, stirring and a thermometer) Add solvent toluene 500ml, add bisphenol A 114g (0.5mol), aniline 120ml (1mol) in turn, slowly add paraformaldehyde 60g (2mol) under strong stirring in an ice-water bath, and stir vigorously at room temperature to mix the reactants uniformly, Put it in an oil bath at 105°C for 4 hours. After the reaction, add 1 mol / L lye, stir and mix, then pour it into a separatory funnel to separate the product, continue to wash with lye, and finally wash it with deionized water until it becomes neutral. Put it into a porcelain plate and dry it in a vacuum at 60°C for 24 hours to obtain a pale yellow solid, that is, a composition of bisphenol A aniline benzoxazine. The oxazine is dissolved in chloroform, ultrasonically dispersed for 1...

Embodiment 2

[0116] In the same method as in Example 1, the composition of N-methyl-N-butylpyrrolidine chloride ionic liquid and bisphenol A aniline benzoxazine resin was prepared in a ratio (mass ratio) of 0.1:99.9 .

[0117] The composition is tested by DSC, and the obtained DSC curve is shown in figure 2 As shown in (please supplement the complete DSC curve), the cure initiation temperature was measured to be 206°C, the cure peak temperature to be 229°C, and the cure end temperature to be 256°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 saturated alkyl side chain. 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): C08G73/00C08L79/00C08K5/3432C08K5/3415C08K5/3435C08K5/19C08K5/50C08K5/357
Inventor 徐日炜王维霞吴一弦余鼎声
Owner BEIJING UNIV OF CHEM TECH
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