| 摘要 |
PURPOSE: To obtain a synthetic resin composition for foaming useful as industrial parts, capable of being in parted with recycling properties, improving expansibility and easily controlling foaming magnifications by blending a thermally decomposable foaming agent with a specific polyolefin. CONSTITUTION: This synthetic resin composition for foaming comprises 95-50wt.% polyolefin having <0.6 long chain branching index (e.g.; branched low density polyethylene, etc.) and 5-50wt.% thermally decomposable foaming agent (e.g.; sodium bicarbonate, etc.). In the component A, e.g. when a polyethylene-based thermoplastic resin is used in the matrix, it is preferable to use a polyolefin having 0.01-20g/10min. melt flow rate(MFR) at 190 deg.C and 2.16kgf, 0.87-0.965(g/cm<3> ) density and 5-40Mw/Mn molecular weight distribution. |
