| 摘要 |
PURPOSE:The title composition excellent in blocking resistance and surface properties, comprising two olefin polymer powders of different sphericities and an inorganic compound powder. CONSTITUTION:100pts.wt. total of 50-95pts.wt.olefin powder of a sphericity represented by the equation [wherein f is a sphericity, A is a sectional area (mm<2>) of a polymer powder and Dmax is the largest diameter (mm) of the section of a polymer powder]>=0.85 and 50-95pts.wt. olefin polymer powder of a sphericity <0.8 are mixed with 0.01-4pts.wt. inorganic compound powder (e.g., CaCO3) of a particle diameter of 0.5-15mum and, optionally, an antioxidant, a stabilizer, a processing aid, a colorant, an antistatic agent, a filler, a flame retardant, etc.
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