VIBRATION-ABSORBING POLYMER COMPOSITION AND LAMINATED VIBRATION-ABSORBING MATERIAL BASED THEREON Russian patent published in 2006 - IPC C08L75/08 B32B27/40 

FIELD: special-destination polymer materials.

SUBSTANCE: invention relates to elastic vibration-absorbing polymer materials designed to provide antivibration protection to various structures in aircraft construction, motor-car construction, and other technical fields. Provided are a polymer composition containing polyurethane polymer based on aromatic diisocyanate, 1,4-butanediol, and polyalkylene-ether-glycol; carbon filler; antioxidant; melamine phosphate; and also laminated elastic vibration-absorbing material composed of outside and intermediate layer, at least one of which is made on the base of polyurethane. One of above-mentioned outside layers is made from indicated polyurethane-based polymer composition, intermediate layer is made from polyvinylacetate film, and the other outside layer from foil-clad glass grid, ratio of corresponding thicknesses being (2÷4):(2÷4):1. Alternatively, laminated vibration-absorbing material may contain polyvinylacetate film and foil-clad glass grid layer in alternate disposition, wherein ratio of thickness of outside layer made from polymer composition to total thickness of alternate layers is 1:(1.5÷3). Polymer composition and elastic laminated vibration-absorbing material based thereon provide effective vibration absorption within temperature range between -60°C and +60°C (tgδ≥0.1).

EFFECT: reduced vibration and noise in vehicles and improved their acoustic comfort.

2 cl, 7 tbl