Vibration damping material
AssigneeIsorca, Inc.
InventorsThomas E. Philipps, Charles L. Meteer
Life of this patent
Estimating the term…
Abstract
Vibration damping material in which polyvinyl chloride (PVC) and a particle filler such as fly ash or talc are amalgamated into a matrix by combination with a small percentage by weight of blown asphalt in a heat working process, such as extrusion, for forming a product such as a sheet of the material. By use of blown asphalt as a compatibilizer and amalgamator, waste or recycled PVC such as of electrical wire strippings combined with a filler has provided excellent damping characteristics.
Claims20
A vibration damping material including as constituents in a combination
- polyvinyl chloride,
- a filler in particle form and,
- solid particles of blown asphalt as a compatibilizer for amalgamation of said constituents,
- said asphalt being present in an amount in the range of 5 to 7% by weight of said combination,
- said material being formed by intermixing said constituents and heating said combination to a softened state of said polyvinyl chloride and asphalt to effect amalgamation of said combination into said damping material.
A high and broad temperature band vibration damping material including as constituents in a combination
- fragments of polyvinyl chloride,
- a filler in particle form and,
- approximately 5 to 7% by weight of said combination being blown asphalt which functions as a compatibilizer to amalgamate said constituents,
- said polyvinyl chloride and filler being present in approximately equal amounts by weight of said combination,
- said material being formed by intermixing and heating said constituents to a heat softened state of said polyvinyl chloride and asphalt to effect amalgamation of said combination into said damping material.
A method of producing a vibration damping material comprising
- mixing particles of a filler with a smaller amount by weight of solid particles of blown asphalt to form a mixture thereof
- adding and mixing polyvinyl chloride fragments with said mixture in an amount approximately equal to the weight of said filler particles to form a combination thereof,
- heating said combination to a softened state of said polyvinyl chloride to effect an amalgamation of said combination into said damping material.
A method of producing a vibration damping material comprising
- accumulating fragments of polyvinyl chloride,
- providing a filler in particle form in an amount approximately equal in weight to said polyvinyl chloride for mixture therewith,
- providing particles of solid blown asphalt in an amount in the range of 5 to 7% by weight of said material,
- intermixing said particles of solid blown asphalt and filler and intermixing fragments of polyvinyl chloride therewith to form a combination thereof,
- heating said combination to a heat softened condition of said polyvinyl chloride and asphalt to effect amalgamation of said combination and thereby provide said vibration damping material.
Dependencies are inferred from the claim text.