| 摘要 |
An object of the invention is to provide a thermal insulation material that can easily make the low density, high fluidity, high strength and thermal insulation property of a foamed polyurethane resin be compatible and can suppress the increase of manufacturing cost by the easy management, obtaining, or manufacture of raw materials. The thermal insulation material includes a foamed polyurethane resin 104 that is filled and foamed in a space between the outer and inner members 102 and 103. The foamed polyurethane resin 104 is formed by injecting the mixture of at least a polyol component, a polyisocyanate component, a supercritical, subcritical, or first liquid foaming agent of which the boiling point is equal to or lower than 0°C under atmospheric pressure, and a second liquid foaming agent that has thermal conductivity lower than the thermal conductivity of the first foaming agent and is liquid hydrocarbon at normal temperature, to the space and foaming and hardening the mixture. |
