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.

Vibration damping constructions using acrylate-containing damping materials

A sound dampening glazing, for example an automotive windshield, in one embodiment of the invention includes a pair of glass sheets having facilities therebetween. In cross section and moving from one glass sheet to the other, the facilities include a polyvinyl butyral sheet, an intermediate sheet having a surface harder than the surface of the interlayer to smooth the interlayer surface e.g. an intermediate polyester sheet, a sheet of dampening material, a polyester sheet, a polyvinyl butyral sheet. In another embodiment, the automotive windshield has two sheets of dampening material, the sheets have sound dampening properties in different temperature ranges to as to provide the automotive windshield with sound dampening properties over a wider temperature range. Methods for making the glazings of the instant invention are also disclosed.

Sound absorbing article and method of making same

A light-weight sound absorbing and insulating plastic sheet material which exhibits an excellent sound absorbing and insulating effect even in the low- and medium-pitched sound range for use in building materials and sound-proof walls and a sound absorbing and insulating plastic panel using the plastic sheet material are provided. The sound absorbing and insulating plastic sheet material of the present invention comprises a plastic sheet-formed substance and magnetic fluid-enclosing capsules contained in the sheet-formed substance. The sound absorbing and insulating plastic panel of the present invention comprises the above-mentioned sound absorbing and insulating plastic sheet material and a fiber-reinforced plastic sheet bound to at least one side of the sheet material. The sound absorbing and insulating plastic sheet material and the sound absorbing and insulating plastic panel of the present invention are excellent also in electromagnetic wave shielding effect.

Sound absorbing/shielding and electric wave absorbing plastic sheet containing encapsulated magnetic fluid, and sound absorbing/shielding and electric wave absorbing plastic panel

Damping means for a vibratory part comprising an inner layer of visco-elastic polyblended material comprising an interpenetrating polymer networks composition consisting essentially of 5-95 percent by weight of an elastomer (e.g., polyethyl acrylate) and 95-5 percent by weight of a plastic (e.g., polystyrene, polymethylmethacrylate), applied to said part, and an outer plastic constraining layer applied over said viscoelastic material.

Vibration or sound damping coating for vibratory structures

To provide an emulsion for vibration damping materials particularly excellent in vibration damping property in a wide temperature range, and therefore useful for vibration damping materials of various structures An emulsion for vibration damping materials, comprising an acrylic copolymer prepared by copolymerizing a monomer component comprising a polar group-containing monomer, wherein the polar group-containing monomer has a SP value (solubility coefficient) of 100 or more and 140 or less; and An emulsion for vibration damping materials, comprising an acrylic copolymer prepared by copolymerizing a monomer component comprising a polar group-containing monomer, wherein the polar group-containing monomer is acrylonitrile, and the polar group-containing monomer is less than 10% by weight relative to 100% by weight of the total monomer component

Emulsion for vibration damping materials

Vibration damping polymer mixture on metal plate

Vibration damped sandwich systems having an improved damping effect within a broad range of temperature and consisting of hard plates and a vibration damping interlayer, said interlayer comprising a copolymer of ethylene, vinyl acetate, ethyl-acrylate and acrylic and/or methacrylic acid.

Vibration damped sandwich systems having interlayers of vinyl acetate-ethylene-n-butylacrylate copolymers

A synthetic resin composition is prepared by mixing various polymers which differ, above all, in their second order transition temperature; the composition can also contain a filler, an epoxide resin and an alcoholate. The composition is preferably obtained in the form of granules, the particle diameter being within the range from 1 to 10 mm. It is used as a starting material for the production of vibration-damping sheets.

Synthetic resin composition, process for its preparation, its use and sheet made of said composition

Schwingungsdaempfende Materialien mit grosser Temperaturbandbreite hoher Wirksamkeit aus Mischungen hochpolymerer Stoffe ohne aeusseren Weichmacher

Eine Kunstharz-Komposition wird durch Vermischen von verschiedenen Polymeren, die sich vor allem in ihrer Einfriertemperatur unterscheiden, hergestellt; A resin composition is prepared by blending different polymers which differ mainly in their glass transition temperature; sie kann ferner einen Fullstoff, ein Epoxidharz und ein Alkoholat enthalten. It may further contain a filler, an epoxy resin and an alcoholate. Die Komposition wird bevorzugt in Granulatform erhalten, wobei der Partikeldurchmesser im Bereich von 1 bis 10 mm liegt. The composition is preferably obtained in the form of granules, wherein the particle diameter is in the range of 1 to 10 mm. Sie dient als Ausgangsmaterial zur Herstellung von schwingungsdampfenden Folien. It is used as a starting material for the manufacture of vibration damping films.

Ebigt Joachim

Papers

Vibration damping polymer mixture on metal plate

Vibration damped sandwich systems having interlayers of vinyl acetate-ethylene-n-butylacrylate copolymers

Synthetic resin composition, process for its preparation, its use and sheet made of said composition

Schwingungsdaempfende Materialien mit grosser Temperaturbandbreite hoher Wirksamkeit aus Mischungen hochpolymerer Stoffe ohne aeusseren Weichmacher

Plastics composition, preparation and use thereof, and foil made therefrom