| 摘要 |
PURPOSE:To impart a sufficient flame retardance and good mechanical and low-temp. properties to a polyolefin polymer by compounding the polymer with a thermoplastic 1,2-polybutadiene elastomer and a silicone resin. CONSTITUTION:100 pts.wt. polyolefin polymer is compounded with 0.1-100 pts.wt. thermoplastic 1,2-polybutadiene elastomer and 0.5-30 pts.wt. silicone resin. As the elastomer, a syndiotactic, lowly crystalline thermoplastic elastomer having a 1,2-bond content of 90% or higher, a mol.wt. of 100000 to several hundred thousands, and a degree of crystallization of 15-35% is used. Examples of the silicone are dimethylpolysiloxane, dimethyldiphenylpolysiloxane, amino-modified silicone, and epoxy-modified silicone. |
