PURPOSE: To obtain the title foam having fine cells and excellent surface chromaticity and surface smoothness, by introducing a crosslinkage into a polyolefin resin mixed with a heat-decomposable blowing agent and a polysiloxane oil and expanding the resin by heating.
CONSTITUTION: A crosslinkage is introduced into an expandable resin formed by mixing a polyolefin resin with a heat-decomposable blowing agent and a polysiloxane oil, and the resin is expanded by heating. The polysiloxane oil which can be used include those which become oily and show fluidity at the processing temperature in the production of an expandable composition or an expandable molding and those which are oily (liquid) at normal temperature. Especially, when a modified polysiloxane formed by modifying a siloxane with a glycol is used, a closed-cell crosslinked polyolefin resin foam having fine cells and an improved surface whiteness can be produced in a suitable expansion efficiency.
| JPS57212236 | CROSSLINKED POLYPROPYLENE FOAM |
| JP2000218748 | COMPOSITE SKIN MATERIAL AND ITS MANUFACTURE |
KINO TORU
NAGARESUGI TETSUJI
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