BUTYL RUBBER COMPOUND WITH NON-MARKING AND NON-SLIP PROPERTIES FOR CLIMBING SHOE OUTSOLE

摘要

A butyl rubber composition for mountain-climbing boots is provided to improve slip resistance particularly under wet environments and to inhibit a marking phenomenon. A butyl rubber composition having non-marking and non-slip properties comprises: 100 parts by weight of a base material containing 90-95 parts by weight of butyl rubber and 5-10 parts by weight of chloroprene rubber; and 40-70 parts by weight of silica, 3-6 parts by weight of a silane coupling agent, 3-7 parts by weight of a metal oxide, 1-2 parts by weight of stearic acid, 1-2 parts by weight of an anti-aging agent, 4-7 parts by weight of a surfactant, 1-3 parts by weight of processing oil, 0.5-1.5 parts by weight of a crosslinking agent, and 1.5-4.5 parts by weight of a crosslinking accelerator. The silica has a BET surface area of 140-200 m^2/g and a pH of 6.5-7.5.