CN112625472B - Double-component reaction film-forming inorganic dry powder coating and application method thereof - Google Patents
Double-component reaction film-forming inorganic dry powder coating and application method thereof Download PDFInfo
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Abstract
The invention provides a two-component reaction film-forming inorganic dry powder coating and a use method thereof, relating to the technical field of coatings. The inorganic dry powder coating provided by the invention consists of a component A and a component B; the component A comprises the following components in percentage by mass of the total mass of the component A: 16-77% of inorganic film forming material, 20-70% of inorganic filler and 0-20% of auxiliary material; the component B comprises the following components in percentage by mass of the total mass of the component B: 55-90% of a silicon-aluminum raw material, 5-40% of an alkali activator and the balance of a Si/Al regulator. In the inorganic dry powder coating provided by the invention, the component A is a C-S-H gelling system, the component B is a geopolymer gelling system, and the components A and B have complementary performances, so that the comprehensive strength of the coating can be greatly improved; the coating realizes the instant material mixing and spraying process through the mixed spraying equipment of the two-component coating, is simple and convenient to use, efficient and environment-friendly, and realizes the controllability of construction time.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a two-component reaction film-forming inorganic dry powder coating and a using method thereof.
Background
In the existing inorganic dry powder coating and production and construction technology thereof, the Chinese invention patent CN 104927419A discloses a reaction film-forming inorganic dry powder coating and a production method thereof, wherein the inorganic dry powder coating comprises siliceous material, calcareous material, filler and auxiliary material. As a pure inorganic coating, the gel mechanism is that a calcium-silicon raw material with volcanic ash activity is hydrated to generate C-S-H gel, the reaction film forming method really realizes zero VOC, and the environmental benefit is widely praised. However, the early strength of the dry powder coating in the film forming reaction is not ideal (the requirement of the inorganic dry powder coating on the early strength is that the scrubbing resistance is more than or equal to 2000 times in 21 days in the relevant national standard, the inorganic dry powder coating is barely up to the requirement, but the powder falling condition still occurs), the adjustment of the reaction activity is difficult, a small amount of activator is added, the film forming reaction activity is low, the early bonding strength is not ideal, the powder falling phenomenon frequently occurs in engineering construction, the sufficient activator is added, the allowable construction time is shortened, and the construction process is greatly restricted.
Disclosure of Invention
In view of the above, the present invention aims to provide a two-component reactive film-forming inorganic dry powder coating and a method for using the same. The two-component reaction film-forming inorganic dry powder coating provided by the invention not only can effectively improve the comprehensive strength of the inorganic dry powder coating, but also can realize the controllability of construction time.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a two-component reaction film-forming inorganic dry powder coating which consists of a component A and a component B;
the component A comprises the following components in percentage by mass of the total mass of the component A:
16-77% of inorganic film-forming material,
20 to 70 percent of inorganic filler,
0-20% of auxiliary material;
the inorganic film-forming material is composed of a siliceous raw material and a calcareous raw material with high volcanic ash activity, wherein the siliceous raw material and the calcareous raw material are in micron or submicron scale; the auxiliary material is composed of one or more of a thickening agent, a water reducing agent, a defoaming agent and an inorganic pigment;
the component B comprises the following components in percentage by mass of the total mass of the component B:
55-90% of silicon-aluminum raw material,
5 to 40 percent of alkali activator,
the balance of Si/Al regulator;
the mass ratio of the component A to the component B is 60-92: 8-40.
Preferably, the mass ratio of the siliceous raw material to the calcareous raw material in the inorganic film-forming material is 4-37: 12 to 40.
Preferably, the siliceous raw material in the inorganic film-forming material is one or more of white carbon black, micro-silica powder, superfine glass beads and silica dry sol.
Preferably, the calcareous raw material in the inorganic film forming material is one or more of sierozem powder, quicklime powder and hydrated lime powder.
Preferably, the inorganic filler is heavy calcium carbonate and/or wollastonite powder, talcum powder and titanium dioxide; the particle size of the primary particles of the inorganic filler is less than or equal to 1 micron; the mass ratio of the calcium carbonate to the calcium carbonate is 23-50: 5-20: 1 to 6.
Preferably, the thickening agent is one or more of diatomite, attapulgite and bentonite; the mass ratio of the thickening agent to the water reducing agent to the defoaming agent to the inorganic pigment is 0-8: 0-2: 0-2: 0 to 8.
Preferably, the silicon-aluminum raw material is in a micron scale; the silicon-aluminum raw material is one or more of calcined kaolin, S105 slag powder and nano tubular silicon-aluminum powder.
Preferably, the alkali activator is water glass and/or potassium alum, and the modulus of the water glass is 1.2-1.5.
Preferably, the Si/Al regulator is nano SiO2Silica dry sol, nano Al2O3、NaAlO2And Al2(SO4)3One or more of them.
The invention provides a use method of the two-component reaction film-forming inorganic dry powder coating in the technical scheme, which comprises the following steps:
mixing the component A of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then grinding by a colloid mill to obtain a component A to be constructed;
mixing the component B of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then stirring to obtain a component B to be constructed;
and carrying out spraying construction on the component A to be constructed and the component B to be constructed by two-component coating mixed spraying equipment.
The invention provides a two-component reaction film-forming inorganic dry powder coating which consists of a component A and a component B; the component A comprises the following components in percentage by mass of the total mass of the component A: 16-77% of inorganic film forming material, 20-70% of inorganic filler and 0-20% of auxiliary material; the inorganic film-forming material is composed of a siliceous raw material and a calcareous raw material with high volcanic ash activity, wherein the siliceous raw material and the calcareous raw material are in micron or submicron scale; the auxiliary material is composed of one or more of a thickening agent, a water reducing agent, a defoaming agent and an inorganic pigment; the component B comprises the following components in percentage by mass of the total mass of the component B: 55-90% of a silicon-aluminum raw material, 5-40% of an alkali activator and the balance of a Si/Al regulator; the mass ratio of the component A to the component B is 60-92: 8-40. The two-component reaction film-forming inorganic dry powder coating provided by the invention has the following beneficial effects:
(1) the two-component reaction film-forming inorganic dry powder coating provided by the invention is a pure inorganic reaction film-forming mode, wherein the component A is a C-S-H gelled system, the component B is a geopolymer gelled system, and a raw material with volcanic ash activity forms C-S-H gelled, water is continuously consumed in the process, and the early reaction activity of the coating is low; compared with the C-S-H gelled material, the geopolymer gelled material can generate certain strength in the early reaction stage, and the reaction is A polymerization process, namely, the silicA-aluminA raw material forms C-A-S-H gel with low calcium or N-A-S-H gel without calcium through the polymerization reaction under the action of an alkaline activator, water is partially released in the process, so that the geopolymer gelled material does not have the limitation of construction time under the condition of sufficient liquid phase environment. In the using process, the component A and the component B can realize performance complementation, namely the component B can provide sufficient early strength, and the high-alkalinity liquid phase environment has good activation effect on the component A; the component A provides later strength, and the bonding strength is higher and higher as time goes on, and the adhesive is firm and durable. The component A and the component B of the two-component reaction film-forming inorganic dry powder coating provided by the invention have complementary performances, and the comprehensive strength of the coating can be greatly improved.
(2) The raw materials used in the invention are nontoxic and harmless inorganic materials, the cost of the raw materials is low, the effect of interior wall decoration can be achieved without coating emulsion paint, the environment is not polluted, and the harm to human health is not caused.
Compared with a common dry powder ball milling process of the dry powder coating, the method for using the two-component reaction film-forming inorganic dry powder coating carries out colloid mill grinding under the condition that water is used as a dispersion medium, so that the grinding efficiency can be greatly improved, the dust pollution is reduced, the energy is saved, the environment is protected, and the early strength of the inorganic dry powder coating in construction can be effectively improved; and the coating realizes instant material mixing and spraying processes through a mixed spraying device of the two-component coating, and realizes the controllability of construction time.
Detailed Description
The invention provides a two-component reaction film-forming inorganic dry powder coating which consists of a component A and a component B;
the component A comprises the following components in percentage by mass of the total mass of the component A:
16-77% of inorganic film-forming material,
20 to 70 percent of inorganic filler,
0-20% of auxiliary material;
the inorganic film-forming material is composed of a siliceous raw material and a calcareous raw material with high volcanic ash activity, wherein the siliceous raw material and the calcareous raw material are in micron or submicron scale; the auxiliary material is composed of one or more of a thickening agent, a water reducing agent, a defoaming agent and an inorganic pigment;
the component B comprises the following components in percentage by mass of the total mass of the component B:
55-90% of silicon-aluminum raw material,
5 to 40 percent of alkali activator,
the balance of Si/Al regulator;
the mass ratio of the component A to the component B is 60-92: 8-40.
In the present invention, unless otherwise specified, all the starting materials are commercially available products well known to those skilled in the art.
The two-component reaction film-forming inorganic dry powder coating provided by the invention comprises a component A and a component B, wherein the component A comprises the following components in percentage by mass of the total mass of the component A: 16-77% of inorganic film forming material, 20-70% of inorganic filler and 0-20% of auxiliary material. In the invention, the inorganic film-forming material consists of a siliceous material and a calcareous material with high volcanic ash activity, wherein the siliceous material and the calcareous material are in a micron or submicron scale. In the invention, the mass ratio of the siliceous raw material to the calcareous raw material in the inorganic film-forming material is preferably 4-37: 12-40, more preferably 15-25: 16 to 34. In the invention, the siliceous raw material in the inorganic film-forming material is preferably one or more of white carbon black, micro silicon powder, superfine glass beads and silica dry sol. In the invention, the calcareous raw material in the inorganic film-forming material is preferably one or more of sierozem powder, quicklime powder and slaked lime powder.
In the invention, the mass of the inorganic filler is 20-70% of the total mass of the component A, and preferably 40-60%. In the invention, the inorganic filler is preferably double-flying powder, talcum powder and titanium dioxide, and the double-flying powder is preferably heavy calcium carbonate and/or wollastonite powder; the mass ratio of the double-flying powder to the talcum powder to the titanium dioxide is preferably 23-50: 5-20: 1-6, more preferably 25-40: 10-15: 2.5 to 4. In the present invention, the filler preferably has a primary particle size of 1 μm or less.
In the invention, the auxiliary material is composed of one or more of a thickening agent, a water reducing agent, a defoaming agent and an inorganic pigment; the mass ratio of the thickening agent to the water reducing agent to the defoaming agent to the inorganic pigment is preferably 0-8: 0-2: 0-2: 0 to 8, more preferably 3 to 5: 0.5-1.5: 0.5-1.5: 0 to 5. In the invention, the thickening agent is preferably one or more of diatomite, attapulgite and bentonite; the diatomite, the attapulgite and the bentonite have good suspension property and dispersibility, can help to avoid sagging phenomenon in construction, and can also help to improve the mechanical property and the storage stability of the coating; due to the special porous structure of the diatomite, the coating has the humidity conditioning, sound insulation and sound absorption effects similar to those of diatom ooze. The invention has no special requirements on the water reducing agent and the defoaming agent, and the inorganic dry powder coating commonly used water reducing agent and defoaming agent known by the technical personnel in the field can be adopted, specifically, the water reducing agent can be a naphthalene-based high-efficiency water reducing agent or polycarboxylic acid high-performance water reducing agent, and the defoaming agent can be a water-based defoaming agent or an organic silicon defoaming agent (note: the definition of the inorganic coating is that the content of organic matters is less than or equal to 5 wt%, and the content of the water reducing agent and the defoaming agent is less than the numerical value). The inorganic pigment is not particularly required in the present invention, and inorganic pigments known to those skilled in the art, such as one or more of red iron oxide, cadmium red, iron blue, cobalt blue, cadmium yellow, iron oxide yellow, zinc chrome yellow, lead chrome yellow, chromium oxide green, lead chrome green, iron oxide brown and carbon black, may be used.
The two-component reaction film-forming inorganic dry powder coating provided by the invention also contains a component B, wherein the component B comprises the following components in percentage by mass of the total mass of the component B: 55-90% of a silicon-aluminum raw material, 5-40% of an alkali activator and the balance of a Si/Al regulator. In the invention, the mass of the silicon-aluminum raw material is preferably 70-85% of the total mass of the component B; the silicon-aluminum raw material is preferably a micron-scale silicon-aluminum raw material, and the silicon-aluminum raw material is preferably one or more of calcined kaolin, S105 slag powder and nano tubular silicon-aluminum powder; the calcined kaolin, the S105 slag powder and the nano tubular silicon-aluminum powder belong to low-calcium or calcium-free silicon-aluminum raw materials and can promote the generation of geopolymer gel.
In the invention, the mass of the alkali activator is preferably 10-35%; the alkali activator is preferably water glass and/or potassium alum, and the modulus of the water glass is preferably 1.2-1.5. In the invention, the alkali activator can provide a high-alkalinity liquid phase environment for the component B system and accelerate the polycondensation reaction of the silicon-aluminum raw material; meanwhile, the water-soluble polymer can be subjected to hydration reaction with a siliceous raw material and a calcareous raw material with volcanic ash activity in the component A in the presence of water, so that the generation of C-S-H gel is promoted.
In the invention, the Si/Al regulator is preferably nano SiO2Silica dry sol, nano Al2O3、NaAlO2And Al2(SO4)3One or more of them. Effective silicon-aluminum components in different silicon-aluminum raw materials are different, and a proper amount of Si/Al regulator is added for supplementation so as to achieve a proper reaction ratio (Si: Al is 1-3).
In the invention, the mass ratio of the component A to the component B is 60-92: 8-40, specifically 90:10, 70:30, 92:8, 60:40, 85:15 and 80: 20.
The component A (C-S-H gel system) and the component B (geopolymer gel system) in the two-component reaction film-forming inorganic dry powder coating provided by the invention have complementary performances, and the comprehensive strength of the coating can be greatly improved.
In the invention, the component A and the component B of the two-component reaction film-forming inorganic dry powder coating are respectively weighed and proportioned according to the respective components, and are respectively packaged in a sealing bag for use in construction.
The invention provides a use method of the two-component reaction film-forming inorganic dry powder coating in the technical scheme, which comprises the following steps:
mixing the component A of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then grinding by a colloid mill to obtain a component A to be constructed;
mixing the component B of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then stirring to obtain a component B to be constructed;
and carrying out spraying construction on the component A to be constructed and the component B to be constructed through mixed spraying equipment of the two-component coating.
The component A and the component B which are respectively packaged in the sealing bag are transported to a construction site for use. In the invention, the component A is mixed with water and then ground by a colloid mill, compared with the common dry powder ball milling process of the dry powder coating, the colloid mill grinding process is carried out under the condition that water is used as a dispersion medium, so that the grinding efficiency can be greatly improved (the low-efficiency process of dry powder ball milling and mixing is omitted, the high-efficiency mixing and grinding process is realized under the condition that water is used as a medium by one colloid mill in a construction site through quantitative proportioning and bagging), the dust pollution is reduced, the energy is saved, the environment is protected, and the early strength of the inorganic dry powder coating in construction can be effectively improved.
In the invention, the component B is mixed with water and then stirred, preferably, an electric stirrer is adopted for stirring, the stirring speed is preferably 1000r/min, and the stirring time is preferably 5-10 min.
The mixed spraying equipment of the two-component coating is equipment capable of realizing the spraying of two-component instant mixed materials, the invention has no special requirement on the two-component spraying equipment, and the two-component spraying equipment well known by technical personnel in the field can be adopted, for example, the spraying equipment with two storage pressure tanks and a two-component spray gun is adopted. In the invention, the component A and the component B can be independently stored for a longer allowable construction time, and can quickly form a cementing product after being mixed.
The two-component reactive film-forming inorganic dry powder coating and the method of using the same according to the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
In each example, the dimensions of each raw material are:
white carbon black: 1-3 microns; ultra-fine glass beads: 10-13 microns; micro silicon powder: 0.1 to 0.3 μm; ash calcium powder: 30-40 microns; quicklime powder: 65-75 microns; slaked lime powder: 35-45 microns; heavy calcium carbonate: 0.5 to 0.8 micron; wollastonite powder: 0.1 to 0.3 μm; titanium dioxide: 0.3-0.6 micron; talc powder: 0.1 to 0.4 micron; calcined kaolin: 2.5-3 microns; s105, slag powder: 20-23 microns; nano tubular silica-alumina powder: 0.1 to 0.3 μm.
Comparative example 1
The inorganic dry powder coating comprises the following components in percentage by mass: 15% of white carbon black, 30% of sierozem powder, 33% of heavy calcium carbonate, 14% of talcum powder, 3.8% of titanium dioxide, 0.2% of water glass, 3% of diatomite, 0.5% of water reducing agent and 0.5% of defoaming agent.
When the reaction film-forming inorganic dry powder coating of the comparative example is used, the prepared dry powder coating is subjected to ball milling and mixing, then water is added for mixing, an electric stirrer with the rotating speed of 1000r/min is used for stirring for 10 minutes, then the mixture is kept stand for 5 minutes, and then the mixture is stirred for 10 minutes by the electric stirrer with the rotating speed of 1000r/min, wherein when the coating is added with water in a blade coating mass ratio, the coating: 1:1.0 of water, when roll coating and spray coating, coating: water 1: 1.5.
Example 1
The inorganic dry powder coating in the embodiment consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of sierozem powder, 33% of heavy calcium carbonate, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85% and water glassGlass 10% (modulus 1.3), silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
When the two-component reaction film-forming inorganic dry powder coating is used, the component A of the dry powder coating is mixed with water (the water adding ratio is 1:1.5), the mixture is ground for 8 minutes by using a colloid mill, and then the mixture is kept stand for later use; and (3) adding water into the dry powder coating B component, mixing the mixture (the water adding ratio is that the coating is 1.5), stirring the mixture for 10 minutes by using an electric stirrer with the rotating speed of 1000r/min, and then standing the mixture for later use. And respectively pouring the component A which is ground by adding water and the component B which is stirred into different storage tanks, constructing by using two-component spraying equipment, wherein the two-component spraying equipment is a two-component spray gun, and adjusting a throttle valve of an A, B component channel to control the spraying proportion of the A, B component.
According to the relevant standards of inorganic dry powder coatings for interior and exterior walls (JG/T445 inorganic dry powder building coating), the two-component reaction film-forming inorganic dry powder coating in the example 1 and the inorganic dry powder coating in the comparative example 1 are detected, and the detection data are shown in Table 1:
TABLE 1 comparison of the Properties of the inorganic dry powder coatings of comparative example 1 and example 1
As can be seen from table 1, the operable time of the inorganic dry powder coating of comparative example 1 is 2h of roll coating without hindrance, while the operable time of the two-component reaction film-forming inorganic dry powder coating of example 1 is 3h of roll coating without hindrance; the inorganic dry powder coating of comparative example 1 had a scrub resistance of 2047 times, while the two-component reactive film-forming inorganic dry powder coating of example 1 had a scrub resistance of 6112 times. Therefore, the two-component reaction film-forming inorganic dry powder coating provided by the invention not only can effectively improve the comprehensive strength of the inorganic dry powder coating, but also can improve the controllability of the construction time.
Example 2
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of sierozem powder, 33% of heavy calcium carbonate, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 90%, water glass (modulus 1.5) 5%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 90: 10.
Example 3
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 25 percent of white carbon black, 25 percent of ash calcium powder, 30 percent of heavy calcium carbonate, 12 percent of talcum powder, 3.8 percent of titanium dioxide, 3 percent of diatomite, 0.5 percent of water reducing agent and 0.7 percent of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 82%, water glass (modulus 1.2) 13%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 90: 10.
Example 4
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 10% of white carbon black, 20% of sierozem powder, 44% of heavy calcium carbonate, 14% of talcum powder, 6% of titanium dioxide, 4% of diatomite, 0.5% of water reducing agent and 1.5% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 75%, water glass (modulus 1.2) 20%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 70: 30.
Example 5
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 8% of white carbon black, 16% of sierozem powder, 50% of heavy calcium carbonate, 14% of talcum powder, 6% of titanium dioxide, 5% of diatomite, 0.6% of water reducing agent and 0.4% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): 70% of calcined kaolin, 25% of water glass (modulus 1.2), 1.5% of silica dry sol, and NaAlO23.5％；
The mass ratio of the component A to the component B is 70: 30.
Example 6
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 9% of white carbon black, 40% of ash calcium powder, 23% of heavy calcium carbonate, 15% of talcum powder, 5% of titanium dioxide, 5% of diatomite, 1.4% of water reducing agent and 1.6% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): 60% of calcined kaolin, 35% of water glass (modulus 1.2), 1.5% of silica dry sol, and NaAlO23.5％；
The mass ratio of the component A to the component B is 70: 30.
Example 7
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 37 percent of white carbon black, 12 percent of sierozem powder, 25 percent of heavy calcium carbonate, 16 percent of talcum powder, 5 percent of titanium dioxide, 3.8 percent of diatomite, 0.5 percent of water reducing agent and 0.7 percent of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 55%, water glass (modulus 1.2) 40%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 92: 8.
Example 8
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 4% of white carbon black, 26% of sierozem powder, 45% of heavy calcium carbonate, 16% of talcum powder, 2% of titanium dioxide, 2.8% of diatomite, 0.5% of water reducing agent, 0.7% of defoaming agent and 3% of iron oxide red;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): 80% of calcined kaolin, 10% of water glass (modulus of 1.4), 5% of silica dry sol, and NaAlO25％；
The mass ratio of the component A to the component B is 60: 40.
Example 9
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 7% of white carbon black, 33% of sierozem powder, 30% of heavy calcium carbonate, 12% of talcum powder, 3% of titanium dioxide, 8% of diatomite, 1.8% of water reducing agent, 2% of defoaming agent and 3.2% of iron oxide red;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 70: 30.
Example 10
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 14% of white carbon black, 23% of sierozem powder, 30% of heavy calcium carbonate, 17% of talcum powder, 2% of titanium dioxide, 4.5% of diatomite, 1.3% of water reducing agent, 1.9% of defoaming agent and 6.3% of iron oxide red;
the component B comprises the following raw materials in percentage by mass (accounting for the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 85: 15.
Example 11
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 34% of sierozem powder, 35% of heavy calcium carbonate, 7% of talcum powder, 4% of titanium dioxide, 2% of water reducing agent, 1.3% of defoaming agent and 1.7% of iron oxide red;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 12
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of micro silicon powder, 30% of ash calcium powder, 33% of heavy calcium carbonate, 14% of talcum powder, 4% of titanium dioxide, 2.8% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 13
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of superfine glass beads, 30% of sierozem powder, 33% of heavy calcium carbonate, 14% of talcum powder, 4% of titanium dioxide, 2.8% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 14
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of quicklime powder, 33% of heavy calcium carbonate, 14% of talcum powder, 4% of titanium dioxide, 2.8% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (accounting for the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.5) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 15
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of heavy calcium carbonate, 14% of talcum powder, 4% of titanium dioxide, 2.8% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (accounting for the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 16
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 17
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of attapulgite, 0.5% of water reducing agent and 0.7% of defoaming agent;
b components eachThe mass content of the raw materials (accounting for the total mass of the component B) is as follows: calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 18
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of bentonite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 19
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (accounting for the total mass of the component B): s105, 85% of slag powder, 10% of water glass (modulus 1.4), 1.5% of silicon dioxide dry sol, and NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 20
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): 85% of nano tubular silica-alumina powder and 10% of water (modulus 1.4) glass1.5% of silica dry sol and NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 21
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15 percent of white carbon black, 30 percent of slaked lime powder, 33 percent of wollastonite powder, 14 percent of talcum powder, 3.8 percent of titanium dioxide, 3 percent of diatomite, 0.5 percent of water reducing agent, 0.7 percent of defoaming agent,
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, potassium alum 10%, silicon dioxide dry sol 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 22
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.3) 10%, nano silicon dioxide 1.5%, NaAlO23.5％；
The mass ratio of the component A to the component B is 80: 20.
Example 23
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): 85% of calcined kaolin, 10% of water glass (modulus 1.5), 1.5% of silica dry sol and 3.5% of nano alumina;
the mass ratio of the component A to the component B is 80: 20.
Example 24
The inorganic dry powder coating in the example consists of a component A and a component B;
the component A comprises the following raw materials in percentage by mass (accounting for the total mass of the component A): 15% of white carbon black, 30% of slaked lime powder, 33% of wollastonite powder, 14% of talcum powder, 3.8% of titanium dioxide, 3% of diatomite, 0.5% of water reducing agent and 0.7% of defoaming agent;
the component B comprises the following raw materials in percentage by mass (based on the total mass of the component B): calcined kaolin 85%, water glass (modulus 1.4) 10%, silica dry sol 1.5%, Al2(SO4)33.5％；
The mass ratio of the component A to the component B is 80: 20.
The key performance pairs of the inorganic dry powder coatings of comparative example 1 and examples 2-24 are shown in table 2:
table 2 comparison of key properties of comparative example 1 and inorganic dry powder coatings of examples 2-24
As can be seen from Table 2, examples 2 to 24 of the present invention are greatly improved and optimized in terms of the workability time, the appearance of the coating film, and the number of times of washing and brushing resistance as compared with comparative example 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A double-component reaction film-forming inorganic dry powder coating is characterized by consisting of a component A and a component B;
the component A comprises the following components in percentage by mass of the total mass of the component A:
16-30% of inorganic film-forming material,
20 to 70 percent of inorganic filler,
0-20% of auxiliary material;
the inorganic film-forming material is composed of a siliceous raw material and a calcareous raw material with high volcanic ash activity, wherein the siliceous raw material and the calcareous raw material are in micron or submicron scale; the auxiliary material is composed of one or more of a thickening agent, a water reducing agent, a defoaming agent and an inorganic pigment;
the mass ratio of the thickening agent to the water reducing agent to the defoaming agent to the inorganic pigment is 0-8: 0-2: 0-2: 0 to 8;
the component B comprises the following components in percentage by mass of the total mass of the component B:
55-75% of silicon-aluminum raw material,
20 to 40 percent of alkali activator,
the balance of Si/Al regulator;
the alkali activator is water glass;
the modulus of the water glass is 1.2-1.5;
the mass ratio of the component A to the component B is 70: 30;
the component A and the component B of the two-component reaction film-forming inorganic dry powder coating are respectively weighed and proportioned according to the respective components, and are respectively packaged in bags;
the Si/Al regulator is nano SiO2Silica dry sol, nano Al2O3、NaAlO2And Al2(SO4)3One or more of them.
2. The two-component reactive film-forming inorganic dry powder coating as claimed in claim 1, wherein the mass ratio of the siliceous material to the calcareous material in the inorganic film-forming material is 4-37: 12 to 40.
3. The two-component reactive film-forming inorganic dry powder coating according to claim 1 or 2, wherein the siliceous raw material in the inorganic film-forming material is one or more of white carbon black, silica fume, superfine glass beads and silica dry sol.
4. The two-component reactive film-forming inorganic dry powder coating according to claim 1 or 2, wherein the calcareous raw material in the inorganic film-forming material is one or more of sierozem powder, quicklime powder and slaked lime powder.
5. The two-component reactive film-forming inorganic dry powder coating according to claim 1, wherein the inorganic filler is heavy calcium carbonate and/or wollastonite powder; the particle size of the primary particles of the inorganic filler is less than or equal to 1 micron; the mass ratio of the double-flying powder to the talcum powder to the titanium dioxide is 23-50: 5-20: 1 to 6.
6. The two-component reactive film-forming inorganic dry powder coating of claim 1, wherein the thickener is one or more of diatomaceous earth, attapulgite and bentonite.
7. The two-component reactive film-forming inorganic dry powder coating of claim 1, wherein the silica-alumina raw material is of micron scale; the alumino-silica raw material is calcined kaolin and/or S105 slag powder.
8. The use method of the two-component reactive film-forming inorganic dry powder coating of any one of claims 1 to 7, characterized by comprising the following steps:
mixing the component A of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then grinding by a colloid mill to obtain a component A to be constructed;
mixing the component B of the two-component reaction film-forming inorganic dry powder coating with water according to a water-cement ratio of 1: 1.0-1.5, and then stirring to obtain a component B to be constructed;
and carrying out spraying construction on the component A to be constructed and the component B to be constructed through mixed spraying equipment of the two-component coating.
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