Narrow Results

We investigated the effect of Halloysite nanotube (HNT) addition on the interfacial and bending properties of hybrid composites. Test specimens were prepared using a vacuum bag method, which is manufactured by using an autoclave device. Ultrasound device was used to uniformly disperse HNT nanoparticles into the epoxy. Amount of the nanoparticles was determined by the weight of the epoxy resin. The Fracture toughness, ILSS and bending strength of Aramid/Basalt fiber hybrid composite specimens were decreased by more than certain amount of HNT. This phenomenon is presumably due to aggregation of HNT.

Aramid fiber III has been treated by ultrasound to enhance the adhesion between aramid fiber III and epoxy. The effects of different ultrasonic systems and conditions were studied. The XPS and SEM indicated the obvious physical and chemical corrosion in the surface of fiber after ultrasonic treatment. The yarn pull-out method was used to evaluate the effect of surface modification. The evaluation results show the tensile strength and NOL ILSS of treated aramid fiber III/epoxy composite increased by 12.5% and 15.2%, respectively. In summary, the effect of ultrasonic treatment is obvious and has potential in industrial application.