Double-component inorganic interior and exterior wall coatingTechnical Field
The invention relates to a non-chemical exterior wall coating, in particular to a double-component inorganic interior and exterior wall coating.
Background
At present, in order to improve the performances of weather resistance, corrosion resistance, chemical substance resistance and the like of building walls, a coating is generally required to be coated on the surfaces of the building walls, and an organic coating is widely used in the field of buildings due to the characteristics of bright color, good adhesion and the like, however, most of the organic coatings are painted by using a coating composition based on styrene acrylate or a coating composition based on vinyl modified styrene acrylate emulsion, but most of the organic substances are generally toxic at present, and can generate great adverse effects on the environment and human health, and the use of the organic coatings is increasingly limited due to the problems in safety, so that the inorganic interior and exterior wall coatings replace the inherent organic exterior wall coatings.
The prior inorganic internal and external wall coating has some defects and shortcomings when in use, and the specific needs for improvement are as follows:
the inorganic coating commonly used at present has the defects of poor caking property, easy aging, scraping and dusting and the like, and the inorganic coating modified by organic materials still has a small amount of VOC and can not be completely harmless, thereby bringing certain limitation to the wide application of inorganic materials for interior and exterior walls.
Disclosure of Invention
The invention aims to provide a two-component inorganic interior and exterior wall coating, which solves the problems that the existing common inorganic coating provided by the background technology has the defects of poor cohesiveness, easy aging, scratch and powder and the like, and the organic modified inorganic coating still has a small amount of VOC and can not be completely harmless, thereby bringing certain limitation to the wide application of the inorganic interior and exterior wall coating.
In order to achieve the purpose, the invention provides the following technical scheme: the double-component inorganic interior and exterior wall coating comprises double components, wherein the double components comprise a component A and a component B, and the component A comprises the following raw materials: quartz powder, talcum powder, metakaolin, nano fly ash, heavy calcium carbonate, barite and nano master batch.
The group B comprises the following raw materials: nano inorganic resin, nano modifier, water-soluble rare earth, defoaming agent and thickening agent.
The specific raw material ratio of the group A is as follows: 20-30 parts of quartz powder, 5-10 parts of talcum powder, 20-30 parts of metakaolin, 10-20 parts of nano fly ash, 10-20 parts of heavy calcium carbonate, 5-10 parts of barite and 5-10 parts of nano master batch.
The specific raw material ratio of the group B is as follows: 40-60 parts of nano inorganic resin, 20-30 parts of nano modifier, 5-15 parts of water-soluble rare earth, 0.1-0.5 part of defoaming agent and 0-5 parts of thickening agent.
As a preferable technical scheme of the invention, the component A is a powder component, the component B is a liquid component, and the weight ratio of the component A to the component B is 1: 0.55-1: 0.75.
As a preferable technical scheme of the invention, the specific surface area of the nano fly ash is more than or equal to 2000 square meters per kilogram.
As a preferred technical scheme of the invention, the nano master batch is a modified inorganic activator with the specific surface area of more than or equal to 60000 nm/kg, the main components of the nano master batch are nano-scale aluminum oxide and silicon oxide, and the nano master batch is prepared by mixing according to the proportion of 1: 0.2-1: 5.
As a preferred technical scheme of the invention, the nano inorganic resin is prepared by fusing inorganic silicon and organic silicon at high temperature and carrying out hybrid grafting after the nano inorganic resin is fused at high temperature.
As a preferred technical scheme of the invention, the nano modifier is aluminosilicate ground to 100 nm level.
As a preferable technical scheme of the invention, the water-soluble rare earth is a plurality of lanthanide series rare earth salts.
As a preferable technical scheme of the invention, the defoaming agent is a water-soluble silane defoaming agent.
As a preferable technical scheme of the invention, the thickening agent is formed by hybridizing a plurality of water-soluble celluloses.
Compared with the prior art, the invention has the beneficial effects that:
the inorganic coating provided by the technical scheme of the invention uses nano aluminosilicate to modify inorganic mineral substances to form an inorganic polymer network with nano island chains connected in series as a film forming substance, uses nano materials to block the gaps of film pores, and simultaneously uses crystal whiskers crystallized after the nano materials penetrate into capillary pores of a substrate as main grabbing force to complete continuous film forming and curing reaction with high waterproof binding degree, thereby making up the defect that the organic coating generates toxic substances, changing the defect that the common inorganic coating has poor physical and chemical properties and can only be accumulated into a film, further ensuring the advantages of zero toxic harmful substances, good cohesiveness, good waterproofness, fire resistance, high temperature resistance and difficult aging of the inorganic double-component internal and external wall coating, thereby solving the defects of poor cohesiveness, easy aging, powder scraping and the like of the existing common inorganic coating, and still having a small amount of VOC by using the organic modified inorganic coating, can not be completely harmless, thereby bringing certain limitation to the wide application of inorganic internal and external wall coatings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme of a double-component inorganic interior and exterior wall coating, which comprises the following steps:
the double components consist of a component A and a component B.
The group A comprises the following raw materials: quartz powder, talcum powder, metakaolin, nano fly ash, heavy calcium carbonate, barite and nano master batch.
The group B comprises the following raw materials: nano inorganic resin, nano modifier, water-soluble rare earth, defoaming agent and thickening agent.
The specific raw material ratio of the group A is as follows: 20-30 parts of quartz powder, 5-10 parts of talcum powder, 20-30 parts of metakaolin, 10-20 parts of nano fly ash, 10-20 parts of heavy calcium carbonate, 5-10 parts of barite and 5-10 parts of nano master batch.
The specific raw material ratio of the group B is as follows: 40-60 parts of nano inorganic resin, 20-30 parts of nano modifier, 5-15 parts of water-soluble rare earth, 0.1-0.5 part of defoaming agent and 0-5 parts of thickening agent.
The component A is a powder component, the component B is a liquid component, the weight ratio of the component A to the weight ratio of the component B is 1: 0.55-1: 0.75, and the specific surface area of the nano pulverized coal ash is more than or equal to 2000 square meters per kilogram.
The nano master batch is a modified inorganic activator with the specific surface area of more than or equal to 60000 square meters per kilogram, the main components of the nano master batch are nano-scale aluminum oxide and silicon oxide, and the nano master batch is prepared by mixing the nano master batch according to the proportion of 1: 0.2-1: 5.
The nano inorganic resin is prepared by fusing inorganic silicon and organic silicon at high temperature and then carrying out hybrid grafting.
The nano modifier is formed by grinding aluminosilicate to 100 nano level, the water-soluble rare earth is various lanthanide rare earth salts, the defoaming agent is a water-soluble silane defoaming agent, and the thickening agent is formed by hybridizing various water-soluble celluloses
The first embodiment is as follows:
the component A comprises 30 parts of quartz powder, 5 parts of talcum powder, 25 parts of metakaolin, 15 parts of nano fly ash, 10 parts of heavy calcium carbonate, 5 parts of barite and 10 parts of nano potassium aluminosilicate. The component B comprises 50 parts of nano inorganic resin, 30 parts of nano modifier, 15 parts of water-soluble rare earth, 0.2 part of defoaming agent and 5 parts of thickening agent, then the prepared component B is poured into the component A, the mixture is dispersed for 120 seconds by a disperser with the rotating speed of 1000 revolutions per minute, thick slurry is discharged, 10 percent of water in total weight is added, the mixture is stirred for 30 seconds to be diluted, the mixture is coated on the inner wall and the outer wall, the surface is dried for ten minutes, the mixture is dried in one hour, the washing resistance reaches 8000 times after 24 hours, and the tested double-component inorganic inner and outer wall coating is a toxic and harmful substance A1-grade fireproof, 1200-temperature resistant, mildewproof and antibacterial, and 2000-hour accelerated aging resistant.
Example two: the component A comprises 20 parts of quartz powder, 10 parts of talcum powder, 30 parts of metakaolin, 10 parts of nano fly ash, 15 parts of heavy calcium carbonate, 5 parts of barite and 10 parts of nano potassium aluminosilicate. The component B comprises 60 parts of nano inorganic resin, 25 parts of nano modifier, 10 parts of water-soluble rare earth, 0.3 part of defoaming agent and 5 parts of thickening agent, then the prepared component B is poured into the component A, the disperser rotating at the speed of 1000 revolutions per minute is used for dispersing for 120 seconds, thick slurry is discharged, 10% of water in total weight is added, the mixture is stirred for 30 seconds for dilution, the mixture is coated on the inner wall and the outer wall, the surface is dried for ten minutes, the mixture is dried in one hour, the washing resistance reaches 5000 times after 24 hours, and the tested double-component inorganic inner and outer wall coating is a toxic and harmful substance A1-grade fireproof, 1200-temperature resistant, mildewproof, antibacterial and 2000-hour accelerated aging resistant.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.