Thermal insulation material.

摘要

A thermal insulation material comprises: 55 - 65 (preferably 59) percent by weight aluminium oxide; 5 - 15 (preferably 6) percent by weight silica; 25 - 35 (preferably 32) percent by weight titanium dioxide; and 1 - 5 (preferably 2) percent by weight ceramic fibre. The aluminium oxide is preferably in the form of a pyrogenic material and may have a BET surface area of about 100 m<2>/g and an average primary particle size of about 20 nm. The silica is preferably in the form of a pyrogenic material and may have a BET surface area of about 200 m<2>/g and an average primary particle size of about 12 nm. A panel (1) incorporating such a thermal insulation material may comprise thermal insulation material (101) compacted into a reinforcing honeycomb structure (100) such that a layer of insulating material according to the invention extends from one face of the reinforcing honeycomb structure to about 30 percent of the depth thereof and conventional microporous thermal insulation extends the remainder of the depth of the structure. A fire-resistant panel comprising a plurality of such panels (1) of thermal insulation material secured side-by-side by means of at least one first joint cover (3) extending along a join between two adjoining panels and secured to a first face of each of the panels, and at least one second joint cover (8) extending along the join between the two adjoining panels and secured to a second face, opposite the first face, of each of the panels. <IMAGE>