CN109266080B - Water-based smokeless and odorless inorganic nano ceramic fireproof coating and preparation method thereof - Google Patents
Water-based smokeless and odorless inorganic nano ceramic fireproof coating and preparation method thereof Download PDFInfo
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- CN109266080B CN109266080B CN201811135309.6A CN201811135309A CN109266080B CN 109266080 B CN109266080 B CN 109266080B CN 201811135309 A CN201811135309 A CN 201811135309A CN 109266080 B CN109266080 B CN 109266080B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention relates to a water-based smokeless tasteless inorganic nano ceramic fireproof coating which is characterized by comprising 60-80% of a component A and 20-40% of a component B by mass percent; the component B is a curing agent; the component A comprises the following raw materials in percentage by mass: 25-80% of water-based inorganic nano ceramic emulsion, 1-20% of pigment, 1-30% of filler, 0.1-0.5% of wetting dispersant, 0.1-0.5% of defoaming agent, 1-5% of thickening agent and the balance of water; the water-based smokeless and tasteless inorganic nano ceramic fireproof coating disclosed by the invention is not decomposed at high temperature, is smokeless and tasteless, and has the performances of fire prevention, flame retardance, high hardness, wear resistance and super weather resistance.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a fireproof coating and a preparation method thereof.
Background
The coating, which is traditionally named as paint in China, is a viscous liquid which is coated on the surface of a protected or decorated object and can form a firmly attached continuous film with the coated object, and is usually prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding additives and using an organic solvent or water. The coating is applied to production and life of people, and the fireproof coating is one of the applications.
The main film forming materials and binders for preparing the fireproof paint at home and abroad currently are two types: organic resins and inorganic binders. The organic resin comprises styrene-acrylic emulsion, silicone-acrylic emulsion, vinyl acetate emulsion, acrylic resin, alkyd resin, epoxy resin, polyester resin, polyurethane resin, fluorocarbon resin, and various flame retardants, heat insulating fillers, pigments, and expansion powder. The fireproof paint taking the organic resin as the film forming material and the binder has certain fireproof performance, and simultaneously has good technical indexes such as waterproofness, corrosion resistance, adhesive force, decoration and the like, but has a common defect: as the main film forming matter and the binder of the fireproof coating are organic matters and have certain flammability at high temperature, once a fire disaster occurs, the organic resins are combusted to generate a large amount of toxic gas, thereby bringing great threat to escape and recourse, and simultaneously, the fire resistance of the fireproof coating is greatly reduced along with the combustion of the film forming matter; the inorganic binder comprises: the fireproof paint which takes inorganic matters as film forming materials and binding agents has excellent fireproof performance, but has poor performances such as waterproofness, adhesive force, decoration and the like, is easy to crack at high temperature, and can not exist in a paint film when the fireproof paint is serious, so that the fireproof function is completely lost.
In the prior art, the patent application number is CN201810039118.3, and the technical scheme is as follows: a preparation method of a nano ceramic fireproof coating comprises the following specific steps: dispersing the nano ceramic resin, the filler, the pigment, the flame retardant, the expansion powder and the heat insulating material in a high-speed dispersion machine, wherein the weight ratio of the nano ceramic resin to the filler to the pigment to the flame retardant to the expansion powder to the heat insulating material is 5-50: 5-60: 1-20: 10-50: 5-30: 5-20, and obtaining a finished product. The fire-retardant coating prepared by the scheme has fire resistance, but the following problems still exist:
1. the main film forming material of the nano ceramic resin is nano silicon dioxide, nano titanium dioxide and nano aluminum oxide, and the nano ceramic resin is formed into a film by condensation of nano hydroxyl, so that the nano ceramic resin has high brittleness and poor adhesion to a base material. Meanwhile, the pure nano oxide is easy to agglomerate to cause stress concentration, and a film-forming substance is easy to generate brittle fracture from the agglomeration position;
2. a large amount of phosphorus organic flame retardant is added into the paint, and even easily decomposed organic matters such as chlorinated paraffin and melamine are added. The weight ratio of the whole organic flame retardant in the nano oxide forming the film forming matter is very large;
3. a large amount of added organic flame retardant is decomposed at high temperature, a large amount of smoke and gas with certain taste are generated, and the whole coating cannot be smokeless and tasteless at high temperature;
4. because a certain film-forming material can be formed by single nano oxide by self-hydroxyl condensation, but a large amount of filler, pigment, fire retardant, expansion powder and heat-insulating material are added, and the maximum ratio of all nano oxides to other materials is as high as: 50:180, the whole so-called paint was completely non-adhesive (adhesion) and could not form a normal complete coating film at all at normal temperature unless melted to form a film at high temperature.
Disclosure of Invention
In view of the disadvantages of the prior art, the present invention aims to provide a smokeless and tasteless inorganic nano-ceramic fireproof coating, which has the advantages of no decomposition at high temperature, no smoke and tasteless, fireproof and flame-retardant properties, high hardness, wear resistance and super weather resistance.
In order to solve the problems, the invention adopts the technical scheme that:
the water-based smokeless tasteless inorganic nano ceramic fireproof coating is characterized by comprising raw material components of 60-80% by mass of component A and 20-40% by mass of component B; the component B is a curing agent;
the component A comprises the following raw materials in percentage by mass:
25-80% of water-based inorganic nano ceramic emulsion
1 to 20 percent of pigment
1 to 30 percent of filler
0.1 to 0.5 percent of wetting dispersant
0.1 to 0.5 percent of defoaming agent
1 to 5 percent of thickening agent
The balance of water;
wherein, the aqueous inorganic nano ceramic emulsion comprises the following components in parts by weight:
30 to 70 percent of silica sol
10 to 60 percent of silane
0.1 to 10 percent of surfactant
The balance of water.
Preferably, the B component curing agent is 26208 aqueous organosilicon dispersion of commercially available aminosilane hydrolysate or Hunan Kaiser new material.
Preferably, the silica sol is composed of one or a mixture of two of acidic silica sol and alkaline silica sol.
Preferably, the silane is formed by mixing one or more alkoxysilanes.
Preferably, the alkoxysilane is: one or more of methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, glycidoxypropylmethyldimethoxysilane and glycidoxypropylmethyldiethoxysilane.
Preferably, the particle size of the silica sol is 1-160 nm, and the pH value is 2-10.
Preferably, the surfactant is one or a mixture of quaternary ammonium type cationic surfactants.
Preferably, the pigment is at least one of commercially available titanium dioxide, other pigments with various colors, pearlescent pigment, fluorescent pigment and metal pigment; the filler is at least one of calcium sulfate whisker, magnesium sulfate whisker, aluminum borate whisker and titanate platelet; the wetting dispersant is digao 245; the defoaming agent is BYK 015; the thickening agent is BYK 420.
The preparation method of the water-based smokeless tasteless inorganic nano ceramic fireproof coating comprises the following steps:
firstly, preparing inorganic nano ceramic emulsion: firstly, mixing one or more silanes, adding a surfactant after mixing uniformly, stirring uniformly, then beginning to drop into silica sol which is weighed and added in advance, finishing dropping within 30 minutes, then beginning to heat, keeping the reaction temperature at 35-80 ℃, reacting at constant temperature for 2-5 hours, then adding metered water, stopping heating, cooling, and obtaining the inorganic nano ceramic emulsion with the appearance of semi-white transparent viscous liquid;
secondly, mixing the inorganic nano ceramic emulsion prepared in the first step with pigment and filler, carrying out high-speed dispersion by using a high-speed dispersion machine for 10-30 minutes, then grinding by using a horizontal sand mill, and adjusting cooling water to ensure that the temperature of the ground material does not exceed 60 ℃, wherein the grinding time is 1-2 hours;
and step three, adding the auxiliary agent and water after grinding, and uniformly stirring to obtain the water-based smokeless tasteless inorganic nano ceramic fireproof coating.
Preferably, the solid content of the inorganic nano ceramic resin in each formula is controlled to be 30-50% according to different material proportions.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the spirit of the invention.
The technical solution of the present invention is illustrated by specific examples below. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples 1 to 6
For convenience of expression, the mixture ratios and the product performances of the 6 embodiments are expressed by the following four tables, which are respectively a table 1 of the mass percentages of the raw materials of the water-based smokeless tasteless inorganic nano ceramic fireproof coating; table 2 table of the mass percentage of the component a; table 3 the aqueous inorganic nano-ceramic emulsion is respectively shown by the components and the weight ratio; table 4: the performance index tables of the aqueous smokeless and tasteless inorganic nano-ceramic fireproof coatings obtained in the above examples 1 to 6.
Table 1 shows a water-based smokeless tasteless inorganic nano-ceramic fireproof coating, which comprises the following raw materials in percentage by mass:
table 2: the component A comprises the following raw materials in percentage by mass:
table 3, the aqueous inorganic nano-ceramic emulsion is prepared from the following components in parts by weight:
table 4: the performance indexes of the aqueous smokeless tasteless inorganic nano-ceramic fireproof coating products obtained in the above examples 1 to 6 are as follows:
in the scheme, the water-based smokeless tasteless inorganic nano ceramic fireproof coating disclosed by the invention is high in glossiness, strong in adhesive force, multiple in wear-resisting times, high in hardness, more than or equal to 90 in water contact angle and hydrophobic. Therefore, the water-based smokeless tasteless inorganic nano ceramic fireproof coating has the following characteristics: no decomposition at high temperature, no smoke and odor, fire resistance, flame retardance, high hardness, wear resistance and super weather resistance.
The inorganic nano film-forming material formed by hydrolytic condensation of the nano silica sol and silane under the regulation of the surfactant has high gloss and fullness, better decoration, no combustion and decomposition at high temperature due to the inorganic characteristic of the nano silica sol, no smoke and gas generation due to no substance decomposition, and no smoke and odor. The inorganic nano film-forming material is flame-retardant, does not need to add other flame retardant to achieve the fireproof and flame-retardant performance, is a stable aqueous system, and is environment-friendly and nontoxic.
Example 7:
the preparation method of the water-based smokeless tasteless inorganic nano ceramic fireproof coating comprises the following steps: the components are proportioned according to the content of the components in the examples 1-6,
firstly, preparing inorganic nano ceramic emulsion: firstly, mixing one or more silanes, adding a surfactant after mixing uniformly, stirring uniformly, then beginning to drop into silica sol which is weighed and added in advance, finishing dropping within 30 minutes, then beginning to heat, keeping the reaction temperature at 35-80 ℃, reacting at constant temperature for 2-5 hours, then adding metered water, stopping heating, cooling, and obtaining the inorganic nano ceramic emulsion with the appearance of semi-white transparent viscous liquid;
secondly, mixing the inorganic nano ceramic emulsion prepared in the first step with pigment and filler, carrying out high-speed dispersion by using a high-speed dispersion machine for 10-30 minutes, then grinding by using a horizontal sand mill, and adjusting cooling water to ensure that the temperature of the ground material does not exceed 60 ℃, wherein the grinding time is 1-2 hours;
and step three, adding the auxiliary agent and water after grinding, and uniformly stirring to obtain the water-based smokeless tasteless inorganic nano ceramic fireproof coating.
The inorganic nano ceramic fireproof coating effectively overcomes various defects in the prior art. The preparation method has the characteristics of simple preparation and stable performance, and has wide application prospect. Therefore, the preparation method of the nano ceramic fireproof coating has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Variations or modifications to the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes that can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (7)
1. The water-based smokeless tasteless inorganic nano ceramic fireproof coating is characterized by comprising raw material components of 60-80% by mass of component A and 20-40% by mass of component B; the component B is a curing agent;
the component A comprises the following raw materials in percentage by mass:
25-80% of water-based inorganic nano ceramic emulsion
1 to 20 percent of pigment
1 to 30 percent of filler
0.1 to 0.5 percent of wetting dispersant
0.1 to 0.5 percent of defoaming agent
1 to 5 percent of thickening agent
The balance of water;
wherein, the aqueous inorganic nano ceramic emulsion comprises the following components in parts by weight:
30 to 70 percent of silica sol
10 to 60 percent of silane
0.1 to 10 percent of surfactant
The balance of water;
the surfactant is one or a mixture of a plurality of quaternary ammonium type cationic surfactants;
the preparation method of the water-based smokeless tasteless inorganic nano ceramic fireproof coating comprises the following steps:
firstly, preparing aqueous inorganic nano ceramic emulsion, namely mixing one or more silanes, adding a surfactant after the silanes are uniformly mixed, uniformly stirring, then dropwise adding the mixture into silica sol which is weighed and fed in advance, finishing dropping within 30 minutes, then starting heating, keeping the reaction temperature at 35-80 ℃, reacting at constant temperature for 2-5 hours, then adding metered water, stopping heating, cooling, and obtaining the aqueous inorganic nano ceramic emulsion with the appearance of galacto-white transparent viscous liquid;
secondly, mixing the water-based inorganic nano ceramic emulsion prepared in the first step with pigment and filler, carrying out high-speed dispersion by using a high-speed dispersion machine for 10-30 minutes, then grinding by using a horizontal sand mill, and adjusting cooling water to ensure that the temperature of the ground material does not exceed 60 ℃, wherein the grinding time is 1-2 hours;
and step three, adding the wetting dispersant, the defoamer, the thickener and water after grinding, and uniformly stirring to obtain the water-based smokeless tasteless inorganic nano ceramic fireproof coating.
2. The aqueous smokeless and odorless inorganic nano ceramic fireproof coating of claim 1, wherein the B component curing agent is commercially available aminosilane hydrolysate.
3. The aqueous smokeless and odorless inorganic nano ceramic fireproof coating of claim 1, wherein the silica sol is composed of one or a mixture of an acidic silica sol and a basic silica sol.
4. The aqueous smokeless and odorless inorganic nano ceramic fireproof coating of claim 1, wherein the silane is mixed with one or more alkoxysilanes.
5. The aqueous smokeless and odorless inorganic nano ceramic fireproof coating of claim 4, wherein the alkoxysilane is: one or more of methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, glycidoxypropylmethyldimethoxysilane and glycidoxypropylmethyldiethoxysilane.
6. The water-based smokeless and odorless inorganic nano ceramic fireproof coating of claim 1 or 3, wherein the silica sol has a particle size of 1-160 nm and a pH value of 2-10.
7. The aqueous smokeless and odorless inorganic nano ceramic fireproof paint of claim 1, wherein the pigment is at least one of commercially available titanium dioxide, pearlescent pigment, fluorescent pigment and metallic pigment; the filler is at least one of calcium sulfate whisker, magnesium sulfate whisker, aluminum borate whisker and titanate platelet; the wetting dispersant is digao 245; the defoaming agent is BYK 015; the thickening agent is BYK 420.
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| CN113004726A (en) * | 2021-03-30 | 2021-06-22 | 江西增孚新材料科技有限公司 | Inorganic nano ceramic coating and preparation method thereof |
| CN114634759A (en) * | 2022-04-20 | 2022-06-17 | 张卫星 | Water-based inorganic ceramic coating and spraying method thereof |
| CN115975409B (en) * | 2022-12-28 | 2024-03-29 | 武汉苏泊尔炊具有限公司 | Ceramic non-stick paint, preparation method thereof and cookware |
| CN116875092A (en) * | 2023-07-13 | 2023-10-13 | 佛山市东鹏陶瓷有限公司 | Preparation method of inorganic ceramic baking-free coating and decorative material thereof |
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