Carbon plastics based on benzoxazine oligomers – perspective materials

Kablov E.N., Valueva M.I., Zelenina I.V., Khmelnitskiy V.V., Aleksashin V.M.
UDC
678.747.2
DOI
10.18577/2307-6046-2020-0-1-68-77
Article PDF (Russian) (753.79 KB)
How to cite
Kablov E.N., Valueva M.I., Zelenina I.V., Khmelnitskiy V.V., Aleksashin V.M. Carbon plastics based on benzoxazine oligomers – perspective materials // Proceedings of VIAM. 2020. No. 1. DOI: 10.18577/2307-6046-2020-0-1-68-77. URL: https://test.viam.ru/en/journal/2020/1/7
Keywords
benzoxazines, benzoxazine oligomers, prepregs, carbon composites.
Abstract

Presents the results of studies of prepregs and carbon plastics, in the manufacture of which oligomeric benzoxazines with different ratios of mono and diamines in the system were used as binders: this class of polymer resins combines the best properties of epoxy and phenol formaldehyde resins. The reaction activity of prepregs was studied, including after long-term storage, and the properties of carbon plastics. An increase in the amount of diamine allows one to increase the glass transition temperature from 151 to 220 °C, which leads to an increase in the heat resistance of the material. CFRPs based on oligomeric benzoxazines have a sufficiently high level of strength properties and retain at least 80% of their mechanical properties at elevated test temperatures; have low water and moisture absorption and are resistant to moisture.

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