| 摘要 |
The present invention addresses the problem of providing a rubber crosslinked foamed molded article which is a highly-foamed rubber sponge molded article having a low specific gravity, and nevertheless, has less dimensional shrinkage after molding, and superior mechanical strengths such as shape stability, wear resistance, tensile strength, and the like, and to which various colors other than black can be easily applied. The rubber crosslinked foamed molded article comprises a crosslinked foamed sponge obtained by performing hot-press molding while simultaneously causing a crosslinking reaction and a foaming reaction. The crosslinked foamed sponge is formed as an elastic body by previously including a crosslinking agent in raw rubber, and is caused to have a specific gravity of less than 0.7 by previously including a foaming agent in the raw rubber. In addition, by previously including 1.0-20.0 mass% of cellulose nanofibers in the raw rubber, cellulose nanofibers are more densely dispersed in the inner wall of each cell in the foamed sponge while cellulose nanofibers are dispersed in thick portions between each cell. |
