| 摘要 |
PURPOSE:To obtain a dense polyolefin foam with a cell diameter of 1mm or less. CONSTITUTION:A polyolefin resin composition comprising a polyolefin resin, a crosslinking agent and a chemical blowing agent is extruded into an unfoamed sheet. Then, the sheet is compressed by 30% or more and expanded to prepare a crosslinked foam continuously. The polyolefin foam thus obtained is excellent in mechanical and thermal properties and is useful as an insulating material in the field of household appliances, air conditioning, automobiles, building materials, etc. |
