Patent ID: 9670356
Date: 2017-06-06
CPC Classifications: C08J,C08K,C08L

Claim:
1. A matrix material for a carbon fiber-reinforced composite comprising a matrix resin, wherein the matrix resin contains both of a first epoxy resin and a second epoxy resin or only the first epoxy resin, and further contains a third epoxy resin, 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, the third epoxy resin contains a bisphenol A-type epoxy resin having two epoxy groups in one molecule and having a weight-average molecular weight of 8000, and the matrix resin has an average epoxy equivalent weight of 109 to 162, which is calculated using the following equation (A):