Single-component polyurethane waterproof coating capable of being formed through one-time construction and application of single-component polyurethane waterproof coating

Abstract

The invention relates to the technical field of waterproof coatings, in particular to a single-component polyurethane waterproof coating capable of being formed through one-time construction and application of the single-component polyurethane waterproof coating. The single-component polyurethane waterproof coating is prepared from the following raw materials: 25 to 30 parts of polyether glycol, 3 to 6 parts of polyether triol, 8 to 12 parts of diisocyanate, 10 to 20 parts of plasticizer, 30 to 45 parts of filler, 1 to 2 parts of pigment, 0.1 to 0.3 part of catalyst, 0.2 to 0.5 part of antioxidant, 0.2 to 0.5 part of ultraviolet light absorber, 0.2 to 0.4 part of defoaming agent, 0.3 to 0.5 part of dispersing agent, 1 to 2 parts of thixotropic agent, 0.2 to 0.4 part of base material wetting agent and 0.1 to 0.2 part of adhesion promoter. Wherein the thixotropic agent is a mixture of modified bentonite and a polyurea thixotropic agent in a mass ratio of (1-1.6): 1. The single-component polyurethane waterproof coating provided by the invention can realize the technical effect of 1.4-1.6 mm thick coating construction at one time.

Description

technical field [0001] The invention relates to the technical field of waterproof coatings, in particular to a single-component polyurethane waterproof coating that can be formed by one-time construction and its application. Background technique [0002] Polyurethane waterproof coatings are widely used in construction and municipal engineering decoration due to their good elasticity, high strength, good adhesion and excellent tear resistance. According to the drying materials and process classification of the coating, polyurethane waterproof coatings can generally be divided into two types: multi-component and single-component. Among them, multi-component polyurethane waterproof coatings need to be mixed and stirred according to the proportion before use. After the prepolymer component and the curing agent component are reacted and cured to form a film, a layer of coating film with strength and elasticity can be formed; the single-component polyurethane waterproof coating ca...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the existing single-component polyurethane waterproof coating requires more than three coating operations to achieve the expected waterproof layer thickness and waterproof effect, the present invention provides One-component polyurethane waterproof coating capable of one-time construction and its application

The one-component polyurethane waterproof coating overcomes the problem that the conventional thixotropic one-component polyurethane waterproof coating can be thickly applied to the designed thickness at one time, but the bonding effect with the substrate is extremely poor, and it also solves the problem of the conventional commercially available non-thixotropic single-component Polyurethane waterproof coating needs three or more times of coating film construction process to achieve the expected effect

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