An object of the present invention is to propose heat insulating structure which is excellent in thermal insulating properties and higher in strength. The heat insulating structure includes: an aerogel layer including aerogel particles, adhesive, and fibers; and a retainer which is provided to at least one face of the aerogel layer and includes fiber materials and binder resin. Each of the fibers is part of one of the fiber materials included in the retainer.

A composite material containing a base material and an inorganic fiber, wherein the base material contains (a) a dehydration condensation reaction product of sodium silicate and (b) alumina cement. A method for producing a composite material containing a base material and an inorganic fiber, the method including: impregnating the inorganic fiber with a solution containing (A) sodium silicate and (B) alumina cement; and causing a dehydration condensation reaction of the component (A) to occur by heating.

Disclosed is a method for preparing a three-dimensional porous nano composite cooling film in large scale. The cooling film is prepared from 0.1-0.5 parts of cellulose acetate, 1-5 parts of water, 20-100 parts of acetone, an additive, and 10-20 parts of nano microspheres through a cooperative formulation of cellulose acetate, nano microsphere materials and the additive. The composite cooling film is obtained by self-deposition of cellulose acetate and nano microspheres, and liquid volatilization during film forming process leads to formation of the three-dimensional porous structure. The film has an effect of enhancing radiation of infrared heat into space, which could significantly reduce a temperature of a substrate surface and achieve rapid and strong cooling. The film could achieve effective cooling without external power and other active cooling equipment, with or without sunlight.

The present invention is directed to a gypsum panel and a method of making such gypsum panel. For instance, the gypsum panel comprises a gypsum core and a first facing material and a second facing material sandwiching the gypsum core. The gypsum core includes gypsum, a thermal insulation additive, and a shrinkage reduction additive. The gypsum core includes 3 wt. % or less of vermiculite based on the weight of the gypsum in the gypsum core. The gypsum panel passes ASTM E119-20.

The present disclosure relates generally to building materials, such as building boards, having improved strength and reduced shrinkage. More particularly, the present disclosure provides building compositions comprising Struvite-K (KMgPO.sub.46 H.sub.2O), Syngenite (K.sub.2Ca(SO.sub.4).sub.2H.sub.2O), and one or more silicate additives suitable for use in building materials.

A gas turbine engine includes a rotatable component and a non-rotatable component. A seal is carried on one of the rotatable component or the non-rotatable component to provide sealing there between. The seal includes a geopolymer seal element.

A thermal barrier coating for a component includes an insulating layer applied to a surface of a substrate. The insulating layer comprises a plurality of ceramic microspheres. A sealing layer is bonded to the insulating layer. The sealing layer is non-permeable such that the sealing layer seals against the insulating layer. A method for applying a thermal barrier coating to a surface of a substrate of a component includes providing a plurality of ceramic microspheres and applying the plurality of ceramic microspheres to the surface of the substrate. At least one heat treatment is applied to the plurality of ceramic microspheres on the surface of the component to create an insulating layer on the surface of the substrate.

A thermal barrier coating for a component includes an insulating layer applied to a surface of a substrate. The insulating layer comprises a plurality of ceramic microspheres. A sealing layer is bonded to the insulating layer. The sealing layer is non-permeable such that the sealing layer seals against the insulating layer. A method for applying a thermal barrier coating to a surface of a substrate of a component includes providing a plurality of ceramic microspheres and applying the plurality of ceramic microspheres to the surface of the substrate. At least one heat treatment is applied to the plurality of ceramic microspheres on the surface of the component to create an insulating layer on the surface of the substrate.

A non-sintered high-strength lightweight aggregate one-shot prepared from sulfur-based and alkaline-based solid wastes by stirring, granulation, and foaming, and a preparation method therefor and use thereof. The non-sintered high-strength lightweight aggregate is prepared from a sulfur-based solid waste, an alkaline-based solid waste, an auxiliary cementing material, a ferro-aluminum-sulfur cementing material, water, and a foaming agent as raw materials. Based on the mass of the total solid, the total content of the sulfur-based solid waste, the alkaline-based solid waste, and the auxiliary cementing material is 80-90 wt %, and the content of the ferro-aluminum-sulfur cementing material is 10-20 wt %. The mass ratio of the water to the total solid is (15-20):(80-85). The foaming agent accounts for 0.3-0.7% of the mass of the total solid. The mass ratio between the sulfur-based solid waste, the alkaline-based solid waste, and the auxiliary cementing material is (27-33):(27-33):(18-25).

According to an embodiment, a method for thermally insulating a portion of a tubular located inside an enclosed conduit comprises the steps of: (A) introducing a grouting composition into an annulus between the tubular and the enclosed conduit, the grouting composition comprising: (i) a water-swellable binding material comprising water-swellable clay; (ii) an aqueous liquid, wherein the aqueous liquid is the continuous phase of the grouting composition; and (iii) an insulating material; and (B) allowing the grouting composition to set after the step of introducing, wherein after setting the grouting composition has a thermal conductivity of less than 0.3 BTU/hr.Math.ft.Math. F. According to another embodiment, a grouting composition for use in insulating a portion of a tubular located inside an enclosed conduit comprises: (A) a water-swellable binding material comprising water-swellable clay; (B) an aqueous liquid, wherein the aqueous liquid is the continuous phase of the grouting composition; and (C) an insulating material, wherein after the grouting composition has set, the grouting composition has a thermal conductivity of less than 0.3 BTU/hr.Math.ft.Math. F.