Polyurethane spraying and adhering construction process for binding at corner and door and window opening and the prefabricated polyurethane block thereof

Abstract

A construction method of polyurethane yin and yang corners and door and window openings spray-bonded combined construction method and polyurethane prefabricated blocks. First, the wall surface is leveled, and polyurethane moisture-proof primer is applied; then, the basic polyurethane insulation layer is sprayed on the corners of the wall surface; spraying and foaming The final polyurethane thickness should be less than the design thickness, and then start to paste the angle iron-shaped polyurethane prefabricated blocks on the yin and yang corners and door and window openings, and ensure that the total polyurethane thickness at the corners is consistent with the design thickness; After the polyurethane blocks at the corners are pasted, you can continue to spray the large-area polyurethane insulation layer on the wall; then brush the polyurethane interface agent on the polyurethane insulation layer and perform leveling treatment, crack resistance treatment and finishing layer treatment. The invention solves technical problems such as difficult spraying construction and slow construction speed at corners such as yin and yang corners and door and window openings.

Description

(1) Technical field [0001] The invention relates to a construction method and components for the yin and yang corners of a thermal insulation wall and the openings of doors and windows. (two), background technology [0002] In the construction of on-site spraying polyurethane thermal insulation building projects, the construction of yin and yang corners and door and window openings is a difficult point. Since the sprayed material is in a fluid state, the corners of the wall after spraying are mainly formed with rounded corners, verticality and flatness. The degree is not good. Moreover, the thickness of polyurethane insulation at these corners is usually thinner than that of the main wall. If you want to achieve the same thickness, you must increase the number of spraying times. However, due to the divergence during spraying, most of the polyurethane sprayed on the Unnecessary places are sprayed, and even sprayed outside the wall. This unnecessary loss of polyurethane raw m...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a polyurethane yin and yang angle and door and window opening spray-bonding combined construction method and polyurethane prefabricated block, which solves the difficulty in construction of the yin and yang angle of the polyurethane rigid foam insulation wall and the difficulty in construction, slow construction speed and non-vertical angle , uneven technical problems

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