Vacuum insulation plate and manufacturing method thereof

Abstract

The invention discloses a vacuum insulation plate and a manufacturing method thereof. The vacuum insulation panel comprises a closed hollow cavity body which is formed by casting a material slurry, wherein the interior of the cavity body is hollow; an airtight layer is arranged on the inner wall or / and the outer wall of the cavity body. After the cavity body is vacuumized, convective heat transfer caused by air movement can be avoided, so that the thermal insulation is excellent; the vacuum insulation plate is formed by casting concrete or the material slurry, so that the vacuum insulation plate is firm and reliable; a basic material adopts the concrete or the material slurry with high strength, and the strength is high enough to bear long-term effects of a vacuum pressure, a wind load, self weight and a temperature deformation stress; more than 90% of the plate structure is made of cement and other inorganic materials, so that the long service life of the vacuum insulation plate can be ensured; the vacuum insulation plate mainly uses vacuum, the cement, pottery sand and other low-cost materials, so that the cost of the vacuum insulation plate disclosed by the invention is only 1 / 3 that of the conventional vacuum insulation plate; 90% of the plate structure is made of the cement and the pottery sand, so that the fire-proof performance is class A; the vacuum insulation plate is applicable to external wall insulation and roof insulation for buildings with a shear wall structure, a framework structure and a steel structure.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a vacuum insulation board for heat insulation and a manufacturing method thereof. Background technique [0002] Existing vacuum external wall insulation panels mainly include: flexible plastic film as vacuum sealing material, silica powder or high-density polyurethane board as core material, polymeric plastic film as gas barrier film, and coated glass fiber cloth as outer surface reinforcement Material, when molding, place the heartwood in the gas barrier film, seal the surroundings of the gas barrier film in a hot-melt state, heat seal the vacuum port after vacuuming. Restricted by its material composition and molding process, its existence: the vacuum degree is realized by the plastic film being bonded and sealed around the support of the heartwood, the internal vacuum degree pressure and the wind load, self-weight, temperature deformation stress borne by the outer wall surfac...

AI Technical Summary

Problems solved by technology

Restricted by its material composition and molding process, its existence: the vacuum degree is realized by the plastic film being bonded and sealed around the support of the heartwood, the internal vacuum degree pressure and the wind load, self-weight, temperature deformation stress borne by the outer wall surface , and finally act together on the gas barrier film made of plastic film, it is easy to be glued and degummed around, the edge of the bonded edge bursts, and the gas barrier film bursts, resulting in damage to the board and complete loss of heat preservation function; with the aging of the gas barrier film , under the long-term action of internal and external forces, its service life is only 15-25 years; the cost of materials is high, and all the materials used are high-priced materials; it cannot be formed into special-shaped panels for corners and other parts; it is used as insulation walls, Glazed tiles and cultural stones are not allowed to be pasted, and the wall decoration method is single

Images