VIBRATION CONTROL HEAT INSULATING MATERIAL FOR FLOATING FLOOR AND FLOOR STRUCTURE USING THIS MATERIAL

PROBLEM TO BE SOLVED: To provide a vibration control heat insulating material for a floating floor having both high vibration control performance, creep resistant performance and heat insulating performance; and a floor structure using this material. SOLUTION: A polystyrene foaming body foamed to 100 to 170 times, has a shock absorbing material 2 formed by recovering the thickness up to 40 to 80 % before compression by removing a compression load after being compressed in the thickness direction, having heat conductivity of 0.05 W/m × K or less, having the thickness of 10 to 150 mm and having a dynamic spring constant of 1 × 106to 15 × 106N/m3, and an elastic body 4 composed of a polyurethane elastomer foaming body having expansion ratio of 1.2 times to 5 times, having heat conductivity of 0. 15 W/m × K or less and having a dynamic spring constant of 1 × 107to 30 × 107N/m3and closely loaded in a through-hole 3 penetratingly formed in the thickness direction in the shock absorbing material 2 so that the total opening area to the whole surface area of the vibration control heat insulating material 1 becomes 0.1 to 10 %. COPYRIGHT: (C)2006,JPO&NCIPI