| 摘要 |
PURPOSE:A composition, consisting of a specific low-density linear polyethylene and a high-density polyethylene, having uniform particle size distribution and improved appearance, powder moldability, e.g. uneven section, etc. and environmental stress cracking resistance, and capable of exhibiting a low shear rate and good fluidity. CONSTITUTION:A powdery polyethylene composition, consisting of (A) 10-90pts. wt. low-density polyethylene having 0.905-0.924g/cm<3> density, 0.2-2.5g/10min melt flow rate and 5-11 melt flow ratio (ratio of melt flow rates under 10kg and 2.16kg loads) and (B) 90-10pts.wt. high-density polyethylene having 0.940- 0.970g/cm<3> density, 2-50g/10min melt flow rate and 5-11 melt flow ratio, having 0.928-0.946g/cm<3>, 2-20g/10min melt flow rate and 5-11 melt flow ratio, and containing <15wt% particles having >=500mu particle diameter and <15wt% particles having <=100mu particle diameter. |
