Abstract
In the paper, we prepared the carbon fibers/epoxy resin composites using modified carbon fibers by a new surface modification method named photo-oxygenation. Effects of the surface modification of carbon fibers on the properties of the composites and matrix resin have been studied through the estimation of color and dynamic viscoelastic properties of the composites. The obtained results are as follows.
(1) Color and the dynamic viscoelastic properties of the composites change with carbon fibers' surface modified or not. So it is seen that the surface modification of reinforcing fibers changes not only the interphase but also the structure of matrix resin and its curing behavior.
(2) The color properties and crosslinking density of the matrix resin are linearly related, so the color properties will be able to be applied for the quality control as curing estimation.
