2results about How to "Insulation effect" patented technology

The present invention relates to a building structure with dense rib connection of prefabricated wall panels and a construction method thereof, comprising a foundation, a prefabricated assembled wall and a floor slab connected in sequence from bottom to top, the prefabricated assembled wall comprising a group of light-weight wall panels spliced ​​with each other, the supporting member being a group of steel pipes vertically penetrating the assembled wall, a mounting body having an upper surface fixed to the steel pipe prefabricated in the foundation, tie bars being arranged between two steel pipes near the junction of left and right adjacent light-weight wall panels, mortar layers for sealing being arranged at the upper and lower ends of the light-weight wall panels, and the tie bars being located in the mortar layer; a crossbeam overlapping with the upper surface of the prefabricated assembled wall is arranged at the top, a connecting locking mechanism is arranged between the top of the steel pipe and the lower surface of the crossbeam, an upper layer identical to the above structure is arranged on the crossbeam; a cross-supporting structure is arranged between the cross-beams, the floor slab of the upper layer is laid on the upper end surface of the cross-supporting structure, and a suspended ceiling is arranged on the lower end surface thereof; the present invention has simple construction and high efficiency, good thermal insulation effect of the building structure, and strong integrated stability.

This invention discloses a silica aerogel thermal insulation material and its preparation method, belonging to the technical field of silica aerogel thermal insulation material preparation, including the following steps: S1: collecting polycrystalline silicon waste and extracting high-purity silica from the polycrystalline silicon waste; S2: etching the high-purity silica; S3: reacting the high-purity etched silica with sodium hydroxide solution to generate a water glass solution; S4: adjusting the pH value of the water glass solution with sulfuric acid solution to generate silica hydrogel; S5: reacting and aging the generated silica hydrogel with n-propanol solution; S6: reacting the aged silica hydrogel with vinyltriethoxysilane solution to make the silica hydrogel hydrophobic, and drying at normal pressure to obtain the silica aerogel thermal insulation material; this invention eliminates the need for re-sintering after obtaining the finished product, thus not affecting the thermal insulation performance of the finished product.