Preparation method of water-based cement elastic emulsion-based flexible facing plate substrate

Abstract

The invention discloses a preparation method of a water-based cement elastic emulsion-based flexible facing plate substrate. The flexible facing plate substrate is formed by compounding inorganic andorganic cementing materials, can be used for decoration and protection of inner and outer wall surface layers of buildings, particularly special-shaped structures such as cylinders, arc tops and bentcorners, is stable in performance, capable of absorbing waste and reducing emission, is water-based, environmentally friendly and long in service life, and is a typical assembly type production new technology and new material. The preparation method comprises the following steps: respectively preparing a dry material and a wet material, mixing, molding, curing, drying, demolding and aging to obtain the water-based cement elastic emulsion-based flexible facing plate substrate, wherein the dry material is prepared by dry-mixing, stirring and uniformly mixing cement, fly ash, high-alumina cement,gypsum and sand; the wet material is prepared by adding a water-based elastic emulsion, a water reducing agent, hydroxy propyl cellulose ether and a dispersing agent into water and uniformly dispersing.

Description

technical field [0001] The invention relates to the field of decorative panels for interior and exterior walls of buildings, in particular to a method for preparing a water-based cement elastic emulsion-based flexible decorative panel substrate. Background technique [0002] The prefabricated building is a building assembled on the construction site with prefabricated components. It is a new type of industry vigorously advocated by the state. Through factory production and integration of various technologies, the product quality is good, the production efficiency is high, and the construction speed of construction projects is greatly improved. The comprehensive benefits are very prominent, and it is a priority industry gradually promoted and implemented by the government. Prefabricated buildings comprehensively improve building quality and construction efficiency through standardized design, factory production, prefabricated construction, integrated decoration, and informati...

AI Technical Summary

Problems solved by technology

[0004] At present, a large number of decorative panels are based on calcium silicate board and fiber cement board, and the coating layer is processed through industrial painting. The engineering installation is generally fixed on the wall with fasteners by means of hanging boards. The decorative effect is equivalent to that of the aluminum-plastic panel, and the decorative appearance effect is very good. The disadvantage of this method is that the cost is high, and there are also certain defects in the quality. Engineering hazards such as twisting and deformation, cracking, etc., when encountering a cylindrical arc shaped structure, it cannot be used due to its lack of flexibility

[0005] Portland cement, high alumina cement, gypsum, etc. are common and reliable inorganic cementitious materials, which are widely used in various construction projects. The product compounded with cement and polymer for building materials is polymer cement waterproof coating. , Excellent weather resistance, mature and widely used in waterproofing projects such as roofing, exterior walls, toilets, underground works, etc. GB / T 23445-2009 (polymer cement waterproof coating) has three models, namely Type I and Type II and Type III, the elongation at break to express their flexibility is greater than 200%, 80% and 30%, the tensile strength is greater than 1.2MPa, 1.8MPa, 1.8MPa, and the bond strength is greater than 0.5MPa, 0.7MPa , 1.0MPa, so it is designed to combine cement with water-based acrylic, water-based polyurethane and other polymer emulsions to make a flexible and rigid wall integrated board substrate, but the polymer waterproof coating does not require a beautiful and smooth coating construction surface, There is no need for physical properties such as fluidity, thixotropy, and drying in factory production, and there is no requirement for softness that can be bent, and hardness that can be horizontally flat and vertically sticky. It is necessary to do large-scale technical design and research on this basis.

[0006] At present, there are very few manufacturers of flexible decorative panels. Most of them use nylon and kaolin as raw materials and produce them through complex processes such as mixing, high-temperature plasticization, and molding. In terms of topcoat coating, spraying, printing, and UV light curing are used. Due to the incomparable beauty and quality of manual construction, it is gradually occupying the vast market. Nylon and kaolin materials can achieve better flexibility, but as construction materials for interior and exterior wall decoration, these two materials are rare. Application precedent requires long-term engineering application test test to determine its engineering weather resistance and service life

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