| 摘要 |
PURPOSE:The titled composition that contains polypropylene glycolpolyethylene glycol ether copolymer, thus preventing polyacetal containing carbon brack from reducing its mechanical properties, thermal stability and modability and showing improved elongation. CONSTITUTION:A polyacetal resin is combined with 0.1-30wt% of carbon black and 0.1-10wt% of a polypropylene glycol- polyethylene glycol ether copolymer. Preferably, an amide, e.g., of the formula (R is residue of carboxyl; x, y are 0, 1 or more; n is 1 or more), preferably ethylene oxide adduct of a higher fatty acid amide. Further, the addition of polyethylene wax (prepared by the thermal cracking prcess) and an amine as an antioxidant is recommendable. |
