Vibration damping constructions using acrylate-containing damping materials
AssigneeMinnesota Mining and Manufacturing Company
InventorsDebra L. Wilfong, David J. Drath, Michael C. Palazzotto, Peggy S. Willett, Henry B. Clark, III
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Abstract
Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.
Claims8
A damping construction comprising at least one layer of viscoelastic material applied to a vibratory solid article, said viscoelastic material comprising an epoxy-acrylate thermoset resin.
A viscoelastic damping material wherein the damping material is the reaction product of a mixture comprising (a) at least one epoxy monomer, (b) at least one acrylate monomer, (c) a free radical initiator, and (d) a cationic initiator, wherein the cationic initiator comprises:
- (1) at least one organometallic complex salt,
- (2) a thermally decomposable ester reaction product of a tertiary alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt, and
- (3) optionally, a peroxide.
Dependencies are inferred from the claim text.