3results about How to "Density controllable" patented technology

The invention discloses a lightweight furnace door brick and a preparation method thereof, the lightweight furnace door brick comprises the following components by weight: 27.4%-35.8% of alumina, 11.3%-17.1% of flint clay, 11.3%-17.1% of cordierite, 8% of alumina micro powder, 5% of silica fume, 7% of calcium aluminate cement, and 10-30% of lightweight aggregate. The lightweight aggregate is matched with the furnace door brick, the material, chemical components and density of the lightweight aggregate are controllable, and the lightweight aggregate can be correspondingly adjusted according to the use condition. Under the composite action of the lightweight aggregate and the air entraining agent, the overall weight and the heat conductivity coefficient of the furnace door brick are reduced, the use cost of refractory materials is reduced, and heat loss is reduced.

The invention relates to a tungsten sol modified AlMgB14-TiB2 composite ceramic and a preparation method of the tungsten sol modified AlMgB14-TiB2 composite ceramic. The preparation method of the tungsten sol modified AlMgB14-TiB2 composite ceramic comprises the following steps: mixing AlMgB14 raw material powder and TiB2 raw material powder, adding the mixture into tungsten sol, carrying out dipping coating modification, carrying out ultrasonic treatment, filtering, drying, carrying out a reduction reaction, and finally carrying out molding and high-temperature sintering on the powder after the reduction reaction to obtain the tungsten sol modified AlMgB14-TiB2 composite ceramic.

The application provides a preparation method of nanocellulose-based composite thermal insulation material and application thereof. The method first prepares a GO-NC-Ce hybrid dispersion liquid through ultrasonic-assisted self-assembly; then, a flexible polymer is used as a matrix, carbon nanotubes, pre-dispersed aerogel particles, phase change microcapsules, a phase change energy storage framework and a composite foaming system are added, and a multifunctional composite slurry is prepared through high-speed shearing and vacuum degassing; subsequently, a gradient ice crystal template is formed through a freeze-drying technology by controlling a freezing rate, and a foaming body with a gradient pore structure of a bottom layer, a main body layer and a surface layer is obtained after sublimation of the ice crystal; finally, a surface layer slurry containing sepiolite fibers, nanometer titanium dioxide and a hydrophobic agent is sprayed on the surface of the foaming body and solidified to obtain the composite thermal insulation material. The obtained material has controllable porosity and excellent heat insulation performance, and is suitable for the field of wearable textile thermal insulation.