Preparation method for integrated thermal insulating outer wall of precast outer wall panel facing thermal insulation

Abstract

A method for preparing a prefabricated exterior wall panel with decorative surface and thermal insulation integrally formed thermal insulation exterior wall, comprising the following steps: ① taking the exterior wall panel and the exterior wall veneer panel for use; ② spraying on the exterior surface of the exterior wall panel and the interior surface of the exterior wall veneer panel Polyurethane infiltrates the transition layer; ③ Paste 4 thickness control panels on the inner surface of the exterior wall veneer; ④ Arrange multiple exterior wall veneer panels on the exterior wall panel; ⑤ Use T-shaped rubber strips to fill the gaps between the exterior wall veneer panels ; ⑥ Stick the large formwork on the outer surface of the exterior wall veneer; ⑦ Use well-shaped steel beams to fasten the outside of the large formwork; ⑧ Pouring polyurethane liquid into the cavity between the exterior wall panel and the exterior wall veneer; ⑨ Polyurethane hair After the foam is cured, the formwork, leak-proof frame, T-shaped rubber strips and well-shaped steel beams are removed, and the prefabricated exterior wall panels are formed after caulking to form an integrated thermal insulation exterior wall. It is completely produced in the factory to reduce on-site pollution, ensure the quality of the project, and greatly reduce the cost of the project.

Description

Technical field [0001] The invention relates to a building exterior wall, and is a preparation method of a prefabricated exterior wall board veneer thermal insulation integrated molding veneer thermal insulation exterior wall. Background technique [0002] At present, the most representative one in our country is prefabricated concrete sandwich exterior wall panels, also known as sandwich exterior wall panels. Its structure and molding technology are very advanced, but its surface layer (decorative layer) is still about 5cm thick. In addition to its own weight, the rigid body composed of cement products must also be exposed to direct sunlight. The temperature difference on the outer surface in summer is as high as 100℃. Under this environment, the wall expansion and contraction caused by the temperature difference stress is inevitable. Local cracks and cracks (especially the inner corners of the window) appear in such a large area of ​​the external decoration layer. Such cracks ...

AI Technical Summary

Problems solved by technology

However, ordinary polystyrene board is a very fragile insulation material. Under normal temperature, it will gradually age and shrink, causing the insulation layer and protective layer to separate, thus losing the insulation effect.

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