A kind of construction method of composite insulation layer

Abstract

The invention provides a construction method for a composite thermal insulation layer, which belongs to the field of building construction. Specifically, it is carried out through the following steps: 1) making an outer board; 2) making a fixing device; 3) making an asbestos-foamed polyurethane outer board; 4) On-site pouring; 5) Sealing. The present invention uses the hook connecting rod to fix the outer plate on the wall without breaking the wall. During on-site construction, polyurethane is layered and poured into the cavity formed by the fixed outer panel and the wall, and the compressive force brought by the foaming deformation of the poured polyurethane is borne by the soft polyurethane foam of the asbestos-foamed polyurethane outer panel. In the insulation layer after construction, polyurethane is separated by asbestos to improve the fireproof ability of the insulation layer. The outer plate adopted by the invention is light and thin, and the optional materials are abundant, the wall body is not damaged during the construction process, the construction is convenient, and the fire prevention requirements of the country are complied with.

Description

technical field [0001] The invention belongs to the field of building construction methods, and in particular relates to a construction method for a composite thermal insulation outer layer. Background technique [0002] In the prior art, asbestos or polyphenylene is mostly used as insulation materials for building exterior walls, which can only be processed and produced in construction factories and then transported to the construction site for pasting. The insulation boards are bulky, and high-rise buildings need lifting cooperation for pasting. And the insulation effect is poor. [0003] In recent years, due to technological progress, polyurethane insulation has become popular in a large area. It is light in weight and can be constructed on site, saving transportation costs. Moreover, the insulation effect of polyurethane insulation is better than that of asbestos board or polystyrene board. Under the same insulation effect of external walls, asbestos Or polystyrene boar...

AI Technical Summary

Problems solved by technology

[0004] There are still the following problems: 1. The adhesion between the polyurethane foam board and the wall is poor, and high-strength adhesive needs to be applied additionally; 2. The high-rise patch still needs the cooperation of a crane; 3. There are gaps between the sheets, and the entire insulation layer is not As a whole, subsequent potting treatment and reinforcement are required

This leads to on-site construction, especially high-rise operations that require the cooperation of cranes. At the same time, in order to fix the heavy outer panels, the fixing devices often use drilling rods and other methods. The subsequent removal is time-consuming and laborious, and damages the wall.

[0006] What's more, the polyurethane insulation layer is not resistant to high temperature, and the optimal fire protection level is B class, which will produce toxic gas after burning. Therefore, 100% polyurethane insulation material is used, and it is difficult for high-rise buildings to meet the national fire protection regulations.

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