| 主权项 |
1. A matrix material for a carbon fiber-reinforced composite comprising a matrix resin containing both a first epoxy resin and a second epoxy resin, or containing only the first epoxy resin, wherein:
the first epoxy resin contains a polyfunctional glycidylamine-type epoxy resin having four epoxy groups in one molecule; the second epoxy resin contains at least one of a p-aminophenol-type epoxy resin having three epoxy groups in one molecule, and a tetramethylbiphenol-type solid epoxy resin having two epoxy groups in one molecule; and the matrix resin has an average epoxy equivalency of 99 to 163, which is calculated using a following equation (A):
average epoxy equivalency of the matrix resin=[epoxy equivalency of first epoxy resin×(weight percentage of first epoxy resin/100)]+average epoxy equivalency of second epoxy resin (A); the average epoxy equivalency of the second epoxy resin is calculated using a following equation (B):
average epoxy equivalency of second epoxy resin=[epoxy equivalency of p-aminophenol-type epoxy resin×(weight percentage of p-aminophenol-type epoxy resin/100)]+[epoxy equivalency of tetramethylbiphenol-type solid epoxy resin×(weight percentage of tetramethylbiphenol-type solid epoxy resin/100)] (B). |
