Study on the performance and mechanism of modified mica for improving polypropylene composites

Abstract Polypropylene (PP) has the most extensive plastics of because advantages simplicity, easy processing, high mechanical properties, corrosion resistance and abrasion electrical insulation. The application PP limitations in many fields it is lack formation shrinkage, low modulus, poor thermal stability, strong gap temperature cracking. addition mineral fillers can not only improve their performance, just PP/mineral filler composite materials required, but also reduce cost material. Therefore, this paper, lamellar mica was selected as to modify surface PP. effects titanate coupling agent silane modified mica, on properties were systematically studied. KH-570 modification increases tensile strength, bending strength modulus composites, while JN-114 effectively toughness processability composites. interaction between modifier analyzed comprehensively by infrared spectroscopy (FTIR), effect mechanism discussed scanning electron microscope. results show that different produce synergistic effect.