Improvement of the Mechanical Properties by Surface Modification of ZnCl2 and Polydopamine in Aramid Fiber Composites

Although aramid fiber has the advantage of excellent chemical and mechanical properties, performance composites may be reduced due to low interfacial adhesion between fabric matrix. The surface was modified improve properties. fibers treated with ZnCl2 polydopamine. After pretreated fabrics were made into a composite material by vacuum-assisted resin transfer molding (VARTM) process, their investigated. highest impact energy shown in concentration 6 wt% 1.5 g/L polydopamine, which is 20% better than that untreated material. In bending strength, condition polydopamine resulted value increased 13% compared hybrid treatment did not significantly affect tensile strength.