| 摘要 |
PURPOSE:To produce a polypropylene-based resin foam having high temperature elongation and high temperature bond strength and excellent secondary processability. CONSTITUTION:A polypropylene-based resin is mixed with a blowing agent of thermal decomposition type and a cross-linking promoter composed of an aromatic polyfunctional monomer, molded into a sheetlike shape, cross-linked by electron beams and the sheet is heated and foamed by using a molten salt of a nitrite, a nitrate or their mixture. |
