Mechanical Characteristics of Composite Reinforced by Short and Plain Woven Carbon Fiber with Vinyl Ester Matrix Modified by Submicron Glass Fiber

摘要

The submicron glass fiber (sGF) was used to modify the vinyl ester resin used as the matrix for short and plain woven fiber composite. Mechanical characterization tests of resin as well as composite were conducted to access effect of sGF modification. The Single Edge Notch Bending (SENB) test showed the improvement from 26 to 61% of Mode I fracture toughness when 0.3wt% and 0.6wt% of sGF added into resin. The strain concentration around fiber tip of the model specimen with modified matrix also diminished compared to that of unmodified resin. These results contributed to the increase of bending and tensile strength of the plain woven fiber composite. However, in the case of short fiber composite, the static strengths were unchanged with the addition of submicron glass fiber modifier.