A carborane-modified phthalonitrile monomer and a preparation method thereof, and a carborane-modified phthalonitrile resin

By introducing a carboane structure into the phthalene monomer, a carboane modified phthalene resin with excellent high temperature stability and processing properties was prepared, which solved the problems of stability and dimensional invariance of spacecraft materials in the high temperature environment in the prior art, and realized the application of high-performance materials.

CN115536686BActive Publication Date: 2025-03-18QIANWAN INST OF CNITECH +1
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Patent Information

Application Number
CN202211062493.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-30
Publication Date
2025-03-18
Estimated Expiration
2042-08-30

AI Technical Summary

Technical Problem

In the prior art, the high-performance materials required by spacecraft are difficult to maintain stability and dimensional invariance in high temperature environments, and it is also difficult to meet the durability and adaptability requirements of spacecraft.

Method used

By introducing a carborane structure into the phthalene monomer, a carborane modified phthalene monomer is prepared and converted into a resin through a specific reaction step to form a carborane modified phthalene resin with excellent high temperature stability and processing properties.

Benefits of technology

The resin exhibits excellent thermal stability and dimensional stability at high temperatures, with a temperature of 5% weight loss above 740°C and a carbon residue of 1000°C above 92%, meeting the needs of high-performance materials in spacecraft and other fields.

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Abstract

The present invention belongs to the technical field of polymer materials, and relates to a carborane-modified phthalonitrile monomer and a preparation method thereof and a carborane-modified phthalonitrile resin. The monomer preparation method comprises the following steps: reacting a mixed reaction system including a hydroxyl-containing carborane derivative, 4-nitrophthalonitrile, a catalyst, and a first solvent at 20 to 180° C. for 4 to 24 hours to obtain the carborane-modified phthalonitrile monomer. The present invention prepares a novel carborane-modified phthalonitrile monomer for the first time, and the carborane-modified phthalonitrile monomer can be dissolved in common organic solvents, and the carborane-modified phthalonitrile resin prepared therefrom has excellent high temperature resistance.
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