Accession Number : ADD015653
Title : Elastomer Blend for Sound and Vibration Damping.
Descriptive Note : Patent, Filed 4 Apr 90, patented 15 Dec 92,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Roland, Charles M ; Trask, Craig A
Report Date : 15 Dec 1992
Pagination or Media Count : 5
Abstract : An elastomer blend is provided for dissipation of mechanical and sonic energy over a broad temperature range. This blend of elastomers comprises from about 60-95% by weight of polybutadiene having more than about 90% 1,2-microstructure and a molecular weight of at least 80,000, the balance being predominantly polyisoprene having at least about 70% cis-1,4-microstructure and a molecular weight of at least 120,000. The blend has a single glass transition ranging over at least sixty Centigrade degrees.
Descriptors : *ELASTOMERS, *GLASS, *PATENTS, *VIBRATION, *DAMPING, DISSIPATION, ENERGY, MICROSTRUCTURE, MIXTURES, MOLECULAR WEIGHT, POLYBUTADIENE, TEMPERATURE, TRANSITIONS, WEIGHT
Subject Categories : Elastomers and Rubber
Ceramics, Refractories and Glass
Distribution Statement : APPROVED FOR PUBLIC RELEASE