74results about How to "Good thermal insulation properties" patented technology

The invention discloses a nano-porous aerogel / fiber composite super thermal insulation material and a preparation method thereof. The aerogel / fiber composite super thermal insulation material comprises silicon dioxide aerogel, alumina micro powder, zirconium oxide fibers and opacifying agent of titanium dioxide. The preparation method comprises that organic solvent, cross-linking agents and organic monomers make up pre-mixed solution according to a certain proportion, the silicon dioxide aerogel, the alumina micro powder, the zirconium oxide fibers, pore-forming agents, suspending agents and the titanium dioxide make up slurry through a ball milling process according to a certain proportion, then a certain amount of initiating agents and a certain amount of catalytic agents are dropwise added into the slurry through vacuum bubble removal, composite material in-situ solidification is achieved through a gel injection moulding process, and then demoulding, vacuum drying and degreasing glue discharging are conducted. The nano-porous aerogel / fiber composite super thermal insulation material has a nano-porous / reinforced fiber composite microstructure, the heat conductivity is 0.040-0.046W*m<-1>*K<-1> (298K), and the flexure strength is as high as 12-14MPa. Preparation processes are simple, industrialized application is easily achieved on a large scale, and the nano-porous aerogel / fiber composite super thermal insulation material is suitable for thermal protection of aerospace, military affairs and severe rugged environments.

A super-vacuum insulation tank for cryogenic liquefied gas comprises a framework; and a tank body including an outer shell, an inner vessel, and a combined support structure connecting the outer shell and inner vessel. The combined support structure is only provided between the dome ends of the out shell and inner vessel at both ends of the tank, which can bear the force in both radial and longitudinal direction. The conduction heating surface between the inner vessel and the outer shell is small, but the support structure can bear heavy load, and the effective shipment volume of the inner vessel is large.

The invention belongs to the field of thermal insulation materials, and discloses a preparation method of a composite silica airgel felt. Mix water, silica airgel powder, resin, curing agent, and low-density microspheres evenly to obtain airgel slurry; impregnate multiple single-layer fiber mats in the airgel slurry to obtain multiple Single-layer airgel fiber mat; then stack multiple single-layer airgel fiber mats together to obtain multi-layer airgel fiber mat; heat the multi-layer airgel fiber mat at 80~90°C for 1~3 h, and then 100~120°C for 1~4 hours, and finally 140~160°C for 1~3 hours to cure, and then get the composite silica airgel felt. The present invention enhances the mechanical properties of the airgel felt without affecting the heat insulation effect of the airgel felt, overcomes the problem of powder falling off of the traditional silica airgel felt, and reduces the airgel in storage and transportation. Dust pollution problems during installation and use.

Disclosed herein is a composition comprising 50 to 73% by weight of loess, 9 to 20% by weight of clay, 3 to 10% by weight of wood flour, 3 to 7% by weight of lignum carbonized carbon body powder, 11 to 15% by weight of water and 1 to 5% by weight of ceramic glaze to manufacture a ceramic moulding including a carbon layer therein. Preferably, the composition according to the present invention further comprises elvan powder and Schmotte. Meanwhile, the present invention also provides a method of manufacturing a ceramic moulding with a carbon layer comprising forming a moulding out of the composition and firing the formed moulding with oxidizing flames.

A heat insulating material includes a porous sintered body formed of MgAl2O4 and having a porosity of 60% or more and less than 73%. In the heat insulating material, pores having a pore diameter of 0.8 μm or more and less than 10 μm occupy 30 vol % or more and less than 90 vol % of a total pore volume, pores having a pore diameter of 0.01 μm or more and less than 0.8 μm occupy 10 vol % or more and less than 60 vol % of the total pore volume, the thermal conductivity at 20° C. or higher and 1500° C. or lower is 0.45 W / (m·K) or less, and the compressive strength is 2 MPa or more.