초록 ▼

A vibration-damping structural body for a vehicle, which comprises a sublayer sheet composed of a foamed thermoset resin and fusion-bonded onto a vehicle part, and at least one layer, which is fusion-bonded onto the sublayer and is selected from a damping intermediate sheet (2) comprised of a viscoe

A vibration-damping structural body for a vehicle, which comprises a sublayer sheet composed of a foamed thermoset resin and fusion-bonded onto a vehicle part, and at least one layer, which is fusion-bonded onto the sublayer and is selected from a damping intermediate sheet (2) comprised of a viscoelastic material and restraining sheet (3). The sublayer sheet (1) is formed from a semi-gelled sheet made by heating a forming and thermosetting resin composition comprising (A) an epoxy resin, (B) a coreacting curing agent, (C) a foaming agent, (D) a surface active agent and (E) a rubber-like elastic material or a powdery thermoplastic resin not containing halogen, which is insoluble in the epoxy resin at room temperature, but is miscible with and dispersible in the epoxy resin at 80°to 150°C.

대표청구항 ▼

A structural body for a vehicle with a two or three layer structure, which comprises a sublayer sheet comprised of a foamed thermoset resin fusion-bonded onto a vehicle part, and at least one layer fusion-bonded onto the sublayer sheet and selected from the group consisting of the following: a vibra

A structural body for a vehicle with a two or three layer structure, which comprises a sublayer sheet comprised of a foamed thermoset resin fusion-bonded onto a vehicle part, and at least one layer fusion-bonded onto the sublayer sheet and selected from the group consisting of the following: a vibration-damping intermediate sheet comprised of a viscoelastic material selected from the group consisting of rubber and asphalt, and a restraining sheet fusion-bonded onto one of the sublayer and the vibration-damping intermediate sheet; wherein said sublayer sheet is formed from a semi-gelled sheet made by heating a foaming and thermosetting resin composition comprising: (A) 100 parts by weight of an epoxy resin having at least two epoxy groups in the molecule, (B) 0.5 to 20 parts by weight of a coreacting curing agent for the epoxy resin, (C) 0.5 to 20 parts by weight of a foaming agent having a decomposition temperature of 100°to 220°C., (D) 0.05 to 5 parts by weight of a surface active agent, and (E) 10 to 200 parts by weight of at least one material which is insoluble in the epoxy resin at room temperature, but is miscible with and dispersible in the epoxy resin at a temperature of 80°to 150°C., and which is selected from the group consisting of a rubber-like elastic material, and a powdery thermoplastic resin which does not contain a halogen and has an average particle diameter of not larger than 150 mm; said heating of the foaming and thermosetting resin composition being carried out at a temperature lower than the decomposition temperature of the foaming agent (C).