Vacuum heat insulating material, and heat insulating container, housing wall, transport equipment, hydrogen transport tanker, and LNG transport tanker using the same

摘要

It is a vacuum heat insulating material (10), Comprising: The jacket material (11) and the core material (12) enclosed by the inside of the jacket material (11) in the pressure-reduced sealing state are provided. The jacket material (11) has a gas barrier property, and (1) a linear expansion coefficient at a static load of 0.05 N within a temperature range of −130 ° C. or more and 80 ° C. or less is 80 × 10 −5 / ° C. or less, (2) The average value of the linear expansion coefficient at a static load of 0.4 N in the temperature range of −140 ° C. or higher and −130 ° C. or lower is 65 × 10 −5 / ° C. or higher, (3) −140 ° C. or higher and −110 ° C. The average value of linear expansion coefficient at a static load of 0.4 N within the following temperature range is 20 × 10 −5 / ° C. or higher, and (4) a static load of 0.4 N within a temperature range of + 50 ° C. or higher and + 65 ° C. or lower. The average value of the coefficient of linear expansion at 13 × 10 −5 / ° C. or higher satisfies at least one of the conditions.