| 摘要 |
<p>PURPOSE:The titled composition, prepared by incorporating a styrene type thermoplastic elastomer having a specific viscosity with crystalline polypropylene, capable of improving the melt behavior of the polypropylene and reducing the amount of melt sags, and suitable for vacuum and air-pressure forming. CONSTITUTION:A polypropylene type resin composition prepared by incorporating 85-99wt% crystalline polypropylene having 0.1-10g/10min melt flow rate (MFR) with 1-15wt% styrene type thermoplastic elastomer having (10-40)/ (60-90) ratio between the styrene and butadiene (or isoprene) and 500-10,000 cP solution viscosity (measured by using a 25wt% toluene solution at 25 deg.C). preferably, the resultant blend is once kneaded and formed into a pelletlike compound to give the uniform quality. The moldability, etc. may be further improved due to the synergistic effect by adding 3-15wt% low-density polyethylene having 0.1-10 melt index (MI) and/or high-density polyethylene having 0.05-5 MI or 5-70wt% filler thereto.</p> |
