RUBBER COMPOSITION, AND VULCANIZATE AND MOLDED ARTICLE THEREOF

摘要

Provided are a rubber composition having excellent heat resistance that is also applicable in automobile rubber component applications, and a vulcanizate and molded article thereof. A rubber composition obtained by blending 3-20 parts by mass of zinc powder having an average particle diameter of 3-10 µm and 4-16 parts by mass of magnesium oxide having a BET specific surface area of 20-150 m2/g as measured by a one-point method in accordance with JIS Z8830 with respect to 100 parts by mass of a rubber component comprising 50-90% by mass of chloroprene rubber and 10-50% by mass of an elastomer. The rubber composition is molded/vulcanized to obtain a vulcanizate or a molded article.