Self-crystallized polymer cement-based waterproof coating, and preparation method thereof

Abstract

The invention relates to a self-crystallized polymer cement-based waterproof coating, and a preparation method thereof. The polymer cement-based waterproof coating is composed of liquid materials and powder materials according to a weight ratio of 1 : 2-3, wherein the liquid materials comprise 93-96 parts of a polymer emulsion, 2-3 parts of a waterproof agent, 1-3 parts of a plasticizing agent and 1-2 parts of a defoaming agent; and the power materials comprise 30-45 parts of a hydraulic cementing material, 40-55 parts of quartz sand, 10-20 parts of mineral fibers, 3-5 parts of plant active protein, 1-2 parts of a surfactant, 0.5-1 part of a cross-linking agent and 0.5-1 part of a crystallizing agent. The mineral fibers with high length-diameter ratio are selected as a network structure of the waterproof coating. The liquid materials and the powder materials with stable performance are obtained by performing shear dispersion plasticization and waterproof modification on the liquid materials and diffusion mixing the powder materials; and the crystallizing agent dispersed in the network structure swells in water to achieve an auto-repairing function for cracks of the waterproof layer.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a polymer cement-based waterproof coating with self-crystallization function and a preparation method thereof. Background technique [0002] The traditional waterproof materials are mainly high-consumption and high-pollution asphalt membranes and polypropylene membranes. In the waterproof construction, the waterproof membrane needs to be tailored according to the shape of the waterproof base layer. For the base layer with complex shapes, multiple pieces need to be spliced. In addition, the current domestic adhesives that match the coiled material have poor performance, and the coiled material itself is prone to aging, etc., often causing the coiled material to crack early and lose its waterproof function. The protection of the waterproof membrane after construction and the maintenance after water leakage have also become difficult problems. The exposed waterproof layer is eas...

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Problems solved by technology

[0008] Aiming at the defects of poor extensibility, low strength and irreparable cracks in the later stage of the current polymer cement-based waterproof coating, the present invention provides a self-crystallizing polymer cement-based waterproof coating, which is composed of high aspect ratio mineral fibers and cross-linked plant active protein The network structure of the waterproof coating ensures good extensibility and strength of the waterproof coating, and uses the water-swelling function of the crystallization agent to form a three-dimensional colloidal structure in the fiber structure

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