Abstract. In this research study, glass fiber (GF) reinforced polypropylene (PP)-nylon 6 (PA6) polymer blend composites were prepared using injection molding process. Specimens of four different compositions such as 80%PP+20%PA6, 80%PP+18%PA6+2%GF, 80%PP+16%PA6+4%GF and 80%PP+14%PA6+6%GF were prepared. In the injection molding process, suitable process parameters were selected depending on the type of composite specimen in producing defects free dog bone shaped specimens. Flexure and impact tests were carried out according to ASTM standard. The important flexure properties such as flexural modulus, flexural yield strength, flexural strength and flexural strain were investigated. The obtained results revealed that flexural modulus of 80%PP+20%PA6 polymer blend is the lowest and the polymer blend composite shows steadily improved modulus as the glass fiber content is increased. Results also showed that flexural strength of pure polymer blend is the lowest but it improves gradually when the glass fiber content is increased. Impact test results revealed that impact strength of 80%PP+20%PA6 polymer blend is the highest whereas all the composites show reduced impact strength or toughness. It is noticed that 80%PP+14%PA6+6%GF composite exhibits the lowest impact strength.
IntroductionThe applications of polymer blend composites for different engineering components are gaining popularity according to industrial requirements. These polymer blend composites are suitable replacement for conventional materials due to high strength and stiffness. In order to enhance the mechanical properties, different thermoplastic polymer blends can be reinforced by different types fibrous materials. In processing of fiber reinforced polymer composites, different manufacturing techniques are suitable depending on the type of polymer composite [1]. In the past decade, research works were carried out on different types of fiber reinforced polymer composites to investigate different mechanical and tribological properties [2][3][4][5][6][7][8]. From these investigations, the obtained results revealed that properties of the composites were influenced by a number of operating parameters, types of matrix and reinforced materials.