In this research, the investigation aimed to develop polymer matrix composite with polyester and vinyl ester better heat resistance. The glass fiber with polyester preferred with different composition of composite with addition of different fillers in different weight fractions was fabricated. fabricated using vacuum bag molding technique. The mechanical properties were evaluated using Universal testing machine and The heat distortion temperature is the temperature at which a polymer or plastic sample deforms under a specified load. This property of a given plastic material is applied in many aspects of apparatus with different loads. Better mechanical properties and wear properties were obtained with increase in weight percentage of secondary reinforcement content. The Heat Distortion Temperature is determined by the test procedure outlined in ASTM D648.Further it was found that The proportion 40:60 and 20:80 does not formed as perfect IPN hence it is found that 80% vinyl ester and 20%poyurethane have good elasticity and toughness in comparison with other propoportions.