Method for constructing external wall polyurethane insulation and panel for construction

Abstract

The invention provides a method for constructing external wall polyurethane insulation and a panel for construction. The method comprises the following steps: a positioning deformed piece with the same or similar insulating performance with polyurethane hard bubble on a panel to prefabricate a constructing panel; the constructing panel is fixed on the surface of an external wall; then, a polyurethane hard bubble insulating layer is poured in hollow space between the panel and the surface of the external wall, so that the polyurethane hard bubble, the positioning deformed piece and the panel are compounded into a hole. After the polyurethane is solidified, an adjustable mount used in construction can be detached, thereby producing a complete and true energy-saving polyurethane external wall external insulating layer. The external wall insulating layer constructed by the method has the advantages of quick constructing speed, high smoothness and strength of the wall body, good insulatingperformance, reusability of the detached adjustable mount, raw material conservation and low construction cost. The panel is not only applicable to various new constructed buildings, but also applicable to energy-saving modification of the buildings, is suitable for national condition of China, has wide application range and popularization value, and can generate great social benefit and economicbenefit after application.

Description

technical field [0001] The invention relates to the improvement of the construction method of the external heat preservation of the exterior wall, in particular to the construction method of the polyurethane heat preservation of the exterior wall and the panel used for construction, and belongs to the technical field of building energy conservation. Background technique [0002] my country has a large population and is relatively short of energy. The number of existing buildings is huge, and the energy consumption of buildings is close to 30% of the total energy consumption of society. With the acceleration of urbanization and the improvement of residents' living standards, building energy consumption will continue to increase. Vigorously developing energy-saving buildings is an important part of implementing the national sustainable development strategy. Improving the thermal insulation performance of the building envelope is one of the important means of building energy ...

AI Technical Summary

Problems solved by technology

However, with this construction method, if the formwork is removed after pouring polyurethane rigid foam, the formwork needs to be brushed with a release agent, and the formwork needs to be polished after disassembly, and then the next step of exterior finish construction can be carried out on the surface of the insulation layer, and the construction speed is slow. , The process is complicated and the construction period is long; if the polyurethane rigid foam is poured and the formwork is not removed, there will be defects such as: the thickness of the insulation layer is not easy to control, cracks are easy to occur at the joints, and the fixing parts that fix the formwork cannot be removed to form thermal bridges. Affects the overall insulation performance of the insulation layer

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