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Propenyl phenoxy compounds with three-branch aromatic structure and preparation method thereof, and bismaleimide resin modified by propenyl phenoxy compounds

A technology of bismaleimide resin and propylene phenoxy, which is applied to the preparation of carbon-based compounds, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of poor thermal aging, high curing temperature and post-curing temperature problem, achieve the effect of small mass loss, reduce curing reaction temperature and time, and increase crosslinking density

Active Publication Date: 2015-05-20
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the existing bismaleimide resin has high curing temperature and post-curing temperature during curing, and the problem of poor long-term thermal aging at high temperature after curing, and provides a three-branched aromatic structure. Oxygen compound and its preparation method and bismaleimide resin modified by it

Method used

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  • Propenyl phenoxy compounds with three-branch aromatic structure and preparation method thereof, and bismaleimide resin modified by propenyl phenoxy compounds
  • Propenyl phenoxy compounds with three-branch aromatic structure and preparation method thereof, and bismaleimide resin modified by propenyl phenoxy compounds
  • Propenyl phenoxy compounds with three-branch aromatic structure and preparation method thereof, and bismaleimide resin modified by propenyl phenoxy compounds

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specific Embodiment approach 1

[0025]Specific embodiment 1: The general structural formula of a three-branched aromatic structure propenylphenoxy compound in this embodiment is:

[0026]

[0027] The R 1 for

[0028] The R 2 -H, -CH 3 、-OCH 3 or -CF 3 .

[0029] The propenylphenoxy compound of the three-branched aromatic structure in this specific embodiment is mainly tris(2-propenyl-5-methoxyphenoxy-4'-benzoyl)benzene, and its structural formula is:

[0030]

specific Embodiment approach 2

[0031] Embodiment 2: The preparation method of a three-branched aromatic structure propenylphenoxy compound described in this embodiment is carried out according to the following steps:

[0032] Mix the trifunctional fluoroketone and allylphenol to obtain the mixture, then add the mixture and the catalyst to the solvent, then raise the temperature of the reaction system to 150°C-205°C, and reflux at 150°C-205°C for 5h-8h , to obtain a crude product, filter the crude product, add ice water dropwise to the filtrate to cool the filtrate to a temperature of 0°C to 5°C, and precipitate at a temperature of 0°C to 5°C for 3h to 5h, finally filter and wash with water until The pH value of the washing solution is neutral, and the washed product is dried to obtain an alkenylphenoxy compound with a three-branched aromatic structure;

[0033] The molar ratio of the trifunctional fluoroketone to allylphenol is 1:(3~3.8); the molar ratio of the trifunctional fluoroketone to the catalyst is ...

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the trifunctional fluoroketone is

[0035]

[0036] The allyl phenol is Others are the same as in the second embodiment.

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Abstract

The invention provides propenyl phenoxy compounds with a three-branch aromatic structure and a preparation method thereof, and a bismaleimide resin modified by the propenyl phenoxy compounds, relating to the field of thermosetting resins and adhesives for high-temperature-resistant composite materials. The invention aims to solve the problems of higher curing temperature and higher after-treatment temperature in the existing bismaleimide resin and the problem of poor long-time thermal aging resistance of the cured resin at high temperature. The structural general formula is disclosed in the specification. The preparation method comprises the following steps: adding trifunctional fluoro ketone, allyl phenol and a catalyst into a solvent, heating to react under reflux, filtering, cooling, precipitating, washing with water and baking. The bismaleimide resin modified by the propenyl phenoxy compounds is prepared from bismaleimide, propenyl phenoxy compounds with three-branch aromatic structure, and diallylphenyl compounds. The invention mainly discloses a propenyl phenoxy compounds with three-branch aromatic structure and a preparation method thereof, and a bismaleimide resin modified by the propenyl phenoxy compounds.

Description

technical field [0001] The invention relates to the field of thermosetting resins and adhesives for high temperature resistant composite materials. Background technique [0002] Thermosetting resins are widely used in aerospace, electronics and electrical fields. Bismaleimide (BMI) is a typical representative of high-performance thermosetting resins. As a matrix resin, it plays an important role in the fields of composite materials and structural adhesives. It has the advantages of good mechanical properties, heat resistance, heat and humidity resistance, solvent resistance, etc., and its service temperature can reach as high as 232°C. Therefore, bismaleimide has become the main bearing force of aerospace above the service temperature of epoxy resin The material is resin. [0003] However, bis-horse resin is generally polymerized by diallyl bisphenol A and N,N'-4,4'-diphenylmethane bismaleimide, and the usual curing temperature is above 200°C, which is due to its curing Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/64C07C49/84C07C41/16C07C43/285C07C315/04C07C317/22C08G73/12C09J179/08
CPCC07C41/16C07C43/285C07C45/64C07C49/84C07C315/04C07C317/22C08G73/12C08G73/125C08G73/127C09J179/08C09J179/085
Inventor 刘长威曲春艳王德志冯浩王海民宿凯
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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