Effect of thermal processing condition on mechanical properties of composites made from air-jet commingled yarn

Air-jet commingled yarn of 50:50%wt glass fiber/polypropylene filament was manufactured to study, the effect of thermal processing condition on the me chanical properties, of composites. Unidirectional thermoplastic composites were fabricated in a sheet mold in a hot press. The bending test of air-je t commingled yarn composites was performed on DCS-500 tester by using three -point lending system. Void content of composites was measured according to ASTM D792. Experimental results showed that bending strength and modulus o f composites was affected by processing condition(temperature, pressure and time) within specified range.