1results about How to "Improve attenuation characteristics" patented technology

This invention provides a vibration damper with excellent damping characteristics. A vibration damper is a vibration damper whose constituent component is a viscoelastic body composed of a rubber composition containing the following components (A) to (C), wherein the number of aggregates of three or more calcium carbonate particles connected together in any 1μm × 1μm square region of a scanning transmission electron microscope image of the viscoelastic body obtained by magnification at 150,000x is in the range of 3 to 15. (A) At least one of styrene-isoprene-styrene copolymer and styrene-butadiene-styrene copolymer. (B) One or more components selected from the group consisting of ethylene-propylene-diene terpolymer, ethylene-butene-diene terpolymer, and butadiene rubber. (C) Calcium carbonate.