Material Science Corporation

Material Sciences Corporation

Essex Specialty Products Inc.

Hong Xiao

Richard Swanson

Gloria Hsu

A constrained layer damper having a multilayer damping material is provided, as are related methods for making and using the damper. The constrained layer damper features a constraining layer, a carrier layer, a release liner, a viscoelastic layer interposed between the constraining layer and a first surface of the carrier layer, and a silicone pressure-sensitive adhesive interposed between the release liner and a second surface of the carrier layer. The silicone pressure-sensitive adhesive has sufficient tackiness at room temperature to adhere the constrained layer damper, with the release liner removed, to a substrate, such as a metallic substrate. The constrained layer damper has a peak damping temperature value in a range of about 50&#xb0; C. to about 100&#xb0; C.

Constrained layer damper, and related methods

The present invention provides an improved method of manufacturing constrained layer dampers with a vulcanized rubber viscoelastic core. The method includes the steps of: applying a first layer of adhesive to a first constraining layer; applying a layer of unvulcanized rubber solved in a solvent to the first layer of adhesive to form a first laminate structure; applying a second layer of adhesive to a second constraining layer to form a second laminate structure; laminating the first laminate structure with the second laminate structure; coiling the laminated first and second laminate structures; and increasing the temperature of the coiled first and second laminate structures to thereby vulcanize the layer of rubber.

Method of manufacturing laminated damping structure with vulcanized rubber as viscoelastic core

A method of forming a panel constrained layer damper treatment from a laminate, having a panel and a visco-elastic layer attached thereto, by forming a panel constrained layer damper from the laminate to a predetermined shape is provided. Additionally, the method of the present invention includes attaching the panel constrained layer damper to a substrate to form the panel constrained layer damper treatment. The method may also include subjecting the panel constrained layer damper to heat energy to bond the visco-elastic layer to the substrate. In addition, various methods of attaching the panel constrained layer damper to the substrate are provided.

Method of forming a panel constrained layer damper treatment

A formulation for covering vehicle panels, such as the inner fenders or floor boards of an automobile, with a chip resistant, vibration damping coating. The formulation includes a blocked polyurethane prepolymer (or a blocked polyisocyanate and a polyol), an epoxy resin, a filler and a plasticizer. A method for forming a chip resistant, vibration damping coating on such a panel including the steps of applying a coating mixture to the panel, the coating mixture including a blocked polyurethane prepolymer (or a blocked polyisocyanate and a polyol) and an epoxy resin, and then heating the panel to form the coating. An improved vehicle panel, wherein the improvement is a polyurethane modified epoxy coating (or a coating which is an interpenetrating network of polyurethane resin and epoxy resin) on the panel.

Growing community of inventors

Farmington Hills, MI, United States of America

Hong Xiao