| 摘要 |
PURPOSE:To provide a crosslinked and foamed material having excellent antistaticity, formability and uniformity. CONSTITUTION:The objective crosslinked and foamed material is made of a resin composition composed of 20-75wt.% of an ionomer of an ethylene- unsaturated carboxylic acid copolymer containing potassium as the ion source and having an average neutralization degree of >=50% and 80-25wt.% of an olefin polymer. The ionomer containing 18-35wt.% of unsaturated carboxylic acid accounts for >=10wt.% in the above composition and the expansion ratio of the material is <20%. The crosslinked and foamed material produced by this process is easily formable and has excellent cushioning property, heat- resistance and antistaticity and is useful as a cushioning material for electric and electronic parts, etc. |
