抄録
A large way of polypropylene resins was found in the field of industrial materials as the substitution of ABS, polystyrene or metal material with their special E/P block copolymer development. By compounding PP with spherical (ex. CaCO3), laminar (ex. talc) or fibril (ex. glass fiber) filler, PP has expanded its market and reached to automobile parts by this time.
In the PP composite with CaCO3 particles are coagulated into one and make a suitable dispersion form for higher impact strength. Talc-filled PP composites shows well-balanced properties between impact strength and stiffness which is competable to ABS resin. This is explained by the structure of talc particles surrounded with ethylene-propylene rubber (EPR) which is contained in E/P block copolymer.
Glass fiber reinforced PP composites attained super high stiffness by improving the adhesion strength between PP and glass fiber. When special type EPR is added to this system, glass fiber reinforced PP composite shows almost equivalent property to Noryl (modified PPO) which is superior to talc-filled PP in the stiffness and impact strength.
