| 摘要 |
PURPOSE: Provided is a polyolefin resin composition, which has improved strength, impact resistance and rigidity to be applied for wheel cover of automobile, which can be made it light-weight, and which has not extrusion phenomenon, especially occurring at weld lines. CONSTITUTION: The polyolefin resin composition comprises 35-75 wt% of extremely high crystalline olefin resin, 3-25 wt% of polyolefin elastomer resin having Mooney viscosity(ML1+4(100 deg.C)) of 10-100, 5-15 wt% of porous glass beads surface-treated with modified polypropylene which is formed by grafting a unsaturated carbonic acid or its anhydride, and 5-15 wt% of barium sulfate having average particle diameter of 1 micrometer or less. The extremely high crystalline olefin resin is an isotactic polypropylene, a copolymer, randon copolymer, or a mixture of other alpha-olefin and propylene. |
