| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum heat insulation material having excellent initial heat insulation performance, heat insulation retention performance, and physical strength.SOLUTION: A vacuum heat insulation material 1 has a core material 10 and an outer cover material 20 that coats the core material 10. The core material 10 has tubular aluminum silicate, the tubular aluminum silicate has an inner diameter of 0.4-3.0 nm, and the tubular aluminum silicate has an average fiber diameter of 38-5010 nm.SELECTED DRAWING: Figure 1 |
