CN112940553A - Ceramic-based fireproof coating and preparation method thereof - Google Patents
Ceramic-based fireproof coating and preparation method thereof Download PDFInfo
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- CN112940553A CN112940553A CN202110164049.0A CN202110164049A CN112940553A CN 112940553 A CN112940553 A CN 112940553A CN 202110164049 A CN202110164049 A CN 202110164049A CN 112940553 A CN112940553 A CN 112940553A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/08—Anti-corrosive 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
- 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
- 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
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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Abstract
The invention discloses a ceramic-based fireproof coating, which belongs to the technical field of coating processing and comprises the following raw materials in parts by weight: 20-30 parts of modified resin, 35-40 parts of reinforcing filler, 0.2-0.4 part of additive and 1-3 parts of inorganic suspending agent. The preparation method is simple and easy to popularize and apply, and the prepared fireproof coating has strong temperature resistance and fireproof characteristics, good corrosion resistance and deformation resistance and wide application range.
Description
Technical Field
The invention belongs to the technical field of coating processing, and particularly relates to a ceramic-based fireproof coating and a preparation method thereof.
Background
The coating is widely used in modern people life, and not only can improve the appearance of a part product, but also can improve the use quality of the part product. The epoxy resin has excellent bonding, corrosion resistance, insulation and other properties, and is widely applied to coatings. Because the epoxy resin composite material has the characteristics of higher strength and low density, the epoxy resin composite material gradually becomes one of indispensable basic materials in the industrial field. However, epoxy resin materials have disadvantages in heat resistance, wear resistance, dimensional stability, brittleness, etc., and thus their applications are affected. In order to improve the quality of the coating, the nano ceramic powder is added into the coating to improve the physical and chemical properties of the whole coating, and although a certain effect is obtained, the nano ceramic powder has small particles and is easy to agglomerate, so that the dispersion effect is poor, and correspondingly, the improvement on the quality of the coating, such as the mechanical property and the like, still has great progress space.
Disclosure of Invention
The invention aims to provide a ceramic-based fireproof coating and a preparation method thereof, and the coating has strong temperature resistance, fireproof performance and good comprehensive performance.
The technical purpose of the invention is realized by the following technical scheme:
a ceramic-based fireproof coating comprises the following raw materials in parts by weight:
20-30 parts of modified resin, 35-40 parts of reinforcing filler, 0.2-0.4 part of additive and 1-3 parts of inorganic suspending agent.
Preferably, the feed comprises the following raw materials in parts by weight:
25 parts of modified resin, 38 parts of reinforcing filler, 0.3 part of additive and 2 parts of inorganic suspending agent.
Further, the preparation method of the modified resin comprises the following steps:
1) blending epoxy resin, urea-formaldehyde resin and nitrile rubber, putting into a reaction kettle, heating to keep the temperature in the reaction kettle at 48-52 ℃, and continuously stirring for 25-30 min to obtain a mixture A for later use;
2) and adding methyl pyrrolidone, a silane coupling agent and methyl methacrylate into the reaction kettle, heating to keep the temperature in the reaction kettle at 55-58 ℃, continuously stirring for 45-50 min, and taking out to obtain the modified resin.
Further, the epoxy resin, the urea-formaldehyde resin and the nitrile rubber in the step 1) are blended at a corresponding weight ratio of 40-45: 15-20: 3 to 6.
Further, the addition amount of the methyl pyrrolidone in the step 2) is 0.5-0.8% of the total mass of the mixture A; the adding amount of the silane coupling agent is 2.5-3% of the total mass of the mixture A; the adding amount of the methyl methacrylate is 1-2% of the total mass of the mixture A.
Further, the preparation method of the reinforcing filler comprises the following steps:
a. correspondingly mixing the nano ceramic powder and kaolin according to the weight ratio of 5-7: 1, blending, and performing ball milling treatment for 30-35 min to obtain a blend B for later use;
b. and (B) immersing the blend B prepared in the step (a) into a modification solution, carrying out ultrasonic treatment for 1-2 h, filtering, and finally washing with deionized water and drying.
Further, the preparation method of the modified solution in the step b comprises the following steps: putting methyl palmitate and glycerol into a reaction kettle together, adding sodium hydroxide accounting for 1-3% of the total mass of the methyl palmitate and the glycerol, continuously stirring for 25-30 min, adding nonylphenol polyoxyethylene ether into the reaction kettle, keeping the temperature of the reaction kettle at 80-85 ℃, raising the pressure to 0.28-0.32 MPa, and continuously stirring for 1-1.5 h to obtain a modified solution; the mixing molar ratio of the methyl palmitate to the glycerol is 2.0-2.4: 1; the addition amount of the nonylphenol polyoxyethylene ether is 20-26% of the total mass of the methyl palmitate.
Further, the additive is lanthanum nitrate or cerium nitrate; the inorganic suspending agent is fumed silica.
A preparation method of a ceramic-based fireproof coating comprises the following steps of mixing all raw materials according to a weight ratio, and fully and uniformly stirring.
Compared with the prior art, the invention has the following advantages:
the invention discloses a ceramic-based fireproof coating and a preparation method thereof, wherein the raw material composition of the fireproof coating is changed and optimized, although epoxy resin is still used as a matrix film forming substance, the added urea-formaldehyde resin and nitrile rubber are modified, so that the corrosion resistance, insulation and temperature resistance of the resin matrix are enhanced, and then methyl pyrrolidone, a silane coupling agent and methyl methacrylate are added, so that the overall bonding strength, reaction activity, impact resistance and the like of the resin are further improved, and the film forming quality and stability are improved; in addition, the reinforcing filler is added, the reinforcing filler is formed by processing and modifying ceramic powder serving as a main component, specifically, nano ceramic powder and kaolin are blended, the temperature resistance of the nano ceramic powder and the kaolin and the multilayer structure characteristics of the kaolin are utilized, the blending is carried out, then the soaking treatment is carried out on a modifying solution, the modifying solution is a special glyceryl palmitate polyoxyethylene ether active agent solution, the surface hydrophilicity of the reinforcing filler can be effectively regulated and changed, the lipophilicity of the reinforcing filler is enhanced, the surface reaction activity and the dispersibility of the reinforcing filler are improved, and the reinforcing filler shows better temperature resistance, corrosion resistance and repair deformation resistance. The preparation method is simple and easy to popularize and apply, and the prepared fireproof coating has strong temperature resistance and fireproof characteristics, good corrosion resistance and deformation resistance, wide application range and high popularization and application value.
Detailed Description
Example 1
A ceramic-based fireproof coating comprises the following raw materials in parts by weight:
20 parts of modified resin, 35 parts of reinforcing filler, 0.2 part of additive and 1 part of inorganic suspending agent.
The preparation method of the modified resin comprises the following steps:
1) mixing epoxy resin, urea-formaldehyde resin and nitrile rubber, putting into a reaction kettle, heating to keep the temperature in the reaction kettle at 48 ℃, and continuously stirring for 25min to obtain a mixture A for later use;
2) and adding methyl pyrrolidone, a silane coupling agent and methyl methacrylate into the reaction kettle, heating to keep the temperature in the reaction kettle at 55 ℃, continuously stirring for 45min, and taking out to obtain the modified resin.
The epoxy resin, the urea-formaldehyde resin and the nitrile rubber in the step 1) are blended according to the corresponding weight ratio of 40: 15: 3.
the addition amount of the methyl pyrrolidone in the step 2) is 0.5 percent of the total mass of the mixture A; the adding amount of the silane coupling agent is 2.5 percent of the total mass of the mixture A; the addition amount of the methyl methacrylate is 1 percent of the total mass of the mixture A.
The preparation method of the reinforcing filler comprises the following steps:
a. and (2) correspondingly mixing the nano ceramic powder and kaolin according to the weight ratio of 5: 1, blending, and performing ball milling treatment for 30min to obtain a blend B for later use;
b. and (B) immersing the blend B prepared in the step (a) into a modification solution, carrying out ultrasonic treatment for 1h, filtering out, and finally washing and drying by using deionized water.
The preparation method of the modified liquid in the step b comprises the following steps: putting methyl palmitate and glycerol into a reaction kettle together, adding sodium hydroxide accounting for 1% of the total mass of the methyl palmitate and the glycerol, continuously stirring for 25min, adding nonylphenol polyoxyethylene ether into the reaction kettle, keeping the temperature of the reaction kettle at 80 ℃ and the pressure at 0.28MPa, and continuously stirring for 1h to obtain a modified solution; the mixing molar ratio of the methyl palmitate to the glycerol is 2.0: 1; the addition amount of the nonylphenol polyoxyethylene ether is 20% of the total mass of the methyl palmitate.
The additive is lanthanum nitrate or cerium nitrate; the inorganic suspending agent is fumed silica.
A preparation method of a ceramic-based fireproof coating comprises the following steps of mixing all raw materials according to a weight ratio, and fully and uniformly stirring.
Example 2
A ceramic-based fireproof coating comprises the following raw materials in parts by weight:
25 parts of modified resin, 38 parts of reinforcing filler, 0.3 part of additive and 2 parts of inorganic suspending agent.
The preparation method of the modified resin comprises the following steps:
1) mixing epoxy resin, urea-formaldehyde resin and nitrile rubber, putting into a reaction kettle, heating to keep the temperature in the reaction kettle at 50 ℃, and continuously stirring for 28min to obtain a mixture A for later use;
2) and adding methyl pyrrolidone, a silane coupling agent and methyl methacrylate into the reaction kettle, heating to keep the temperature in the reaction kettle at 57 ℃, continuously stirring for 48min, and taking out to obtain the modified resin.
The epoxy resin, the urea-formaldehyde resin and the nitrile rubber in the step 1) are mixed according to the corresponding weight ratio of 43: 18: 5.
the addition amount of the methyl pyrrolidone in the step 2) is 0.7 percent of the total mass of the mixture A; the adding amount of the silane coupling agent is 2.8 percent of the total mass of the mixture A; the addition of the methyl methacrylate is 1.5 percent of the total mass of the mixture A.
The preparation method of the reinforcing filler comprises the following steps:
a. and (2) correspondingly mixing the nano ceramic powder and kaolin according to the weight ratio of 6: 1, blending, and performing ball milling treatment for 33min to obtain a blend B for later use;
b. and (B) immersing the blend B prepared in the step (a) into a modification solution, carrying out ultrasonic treatment for 1.6h, filtering, and finally washing and drying by deionized water.
The preparation method of the modified liquid in the step b comprises the following steps: putting methyl palmitate and glycerol into a reaction kettle together, adding sodium hydroxide accounting for 2% of the total mass of the methyl palmitate and the glycerol, continuously stirring for 28min, adding nonylphenol polyoxyethylene ether into the reaction kettle, keeping the temperature of the reaction kettle at 83 ℃ and the pressure at 0.30MPa, and continuously stirring for 1.2h to obtain a modified solution; the mixing molar ratio of the methyl palmitate to the glycerol is 2.2: 1; the addition amount of the nonylphenol polyoxyethylene ether is 23% of the total mass of the methyl palmitate.
The additive is lanthanum nitrate or cerium nitrate; the inorganic suspending agent is fumed silica.
A preparation method of a ceramic-based fireproof coating comprises the following steps of mixing all raw materials according to a weight ratio, and fully and uniformly stirring.
Example 3
A ceramic-based fireproof coating comprises the following raw materials in parts by weight:
30 parts of modified resin, 40 parts of reinforcing filler, 0.4 part of additive and 3 parts of inorganic suspending agent.
The preparation method of the modified resin comprises the following steps:
1) mixing epoxy resin, urea-formaldehyde resin and nitrile rubber, putting into a reaction kettle, heating to keep the temperature in the reaction kettle at 52 ℃, and continuously stirring for 30min to obtain a mixture A for later use;
2) and adding methyl pyrrolidone, a silane coupling agent and methyl methacrylate into the reaction kettle, heating to keep the temperature in the reaction kettle at 58 ℃, continuously stirring for 50min, and taking out to obtain the modified resin.
The epoxy resin, the urea-formaldehyde resin and the nitrile rubber in the step 1) are mixed according to the corresponding weight ratio of 45: 20: 6.
the addition amount of the methyl pyrrolidone in the step 2) is 0.8 percent of the total mass of the mixture A; the adding amount of the silane coupling agent is 3 percent of the total mass of the mixture A; the addition of the methyl methacrylate is 2 percent of the total mass of the mixture A.
The preparation method of the reinforcing filler comprises the following steps:
a. the nano ceramic powder and kaolin are correspondingly mixed according to the weight ratio of 7: 1, blending, and performing ball milling treatment for 35min to obtain a blend B for later use;
b. and (B) immersing the blend B prepared in the step (a) into a modification solution, carrying out ultrasonic treatment for 2 hours, filtering out, and finally washing and drying by using deionized water.
The preparation method of the modified liquid in the step b comprises the following steps: putting methyl palmitate and glycerol into a reaction kettle together, adding sodium hydroxide accounting for 3% of the total mass of the methyl palmitate and the glycerol, continuously stirring for 30min, adding nonylphenol polyoxyethylene ether into the reaction kettle, keeping the temperature of the reaction kettle at 85 ℃, increasing the pressure to 0.32MPa, and continuously stirring for 1.5h to obtain a modified solution; the mixing molar ratio of the methyl palmitate to the glycerol is 2.4: 1; the addition amount of the nonylphenol polyoxyethylene ether is 26% of the total mass of the methyl palmitate.
The additive is lanthanum nitrate or cerium nitrate; the inorganic suspending agent is fumed silica.
A preparation method of a ceramic-based fireproof coating comprises the following steps of mixing all raw materials according to a weight ratio, and fully and uniformly stirring.
In order to compare the effects of the present invention, the coatings prepared in the above examples 1 to 3 were used
Coating the solution on the surface of an anode carbon block, heating the anode carbon block from the normal temperature, heating the anode carbon block to 950 ℃ for 7 hours, then keeping the temperature of the anode carbon block at 950 ℃ for 5 hours, cooling the anode carbon block to the normal temperature for 10 hours, and carrying out a verification experiment in a muffle furnace.
And finally, carrying out detection result statistics: the high-temperature protection effect of the coating is judged according to the weight loss rate of the anode carbon block before and after firing, and the result shows that the appearance of the anode carbon block is kept intact, and the roasting weight loss rate is not higher than 8 percent, which shows that the coating prepared by the invention has excellent high-temperature corrosion oxidation resistance and great market competitiveness.
Claims (9)
1. The ceramic-based fireproof coating is characterized by comprising the following raw materials in parts by weight:
20-30 parts of modified resin, 35-40 parts of reinforcing filler, 0.2-0.4 part of additive and 1-3 parts of inorganic suspending agent.
2. The ceramic-based fireproof coating according to claim 1, comprising the following raw materials in parts by weight:
25 parts of modified resin, 38 parts of reinforcing filler, 0.3 part of additive and 2 parts of inorganic suspending agent.
3. The ceramic-based fireproof coating according to claim 1 or 2, wherein the preparation method of the modified resin comprises the following steps:
1) blending epoxy resin, urea-formaldehyde resin and nitrile rubber, putting into a reaction kettle, heating to keep the temperature in the reaction kettle at 48-52 ℃, and continuously stirring for 25-30 min to obtain a mixture A for later use;
2) and adding methyl pyrrolidone, a silane coupling agent and methyl methacrylate into the reaction kettle, heating to keep the temperature in the reaction kettle at 55-58 ℃, continuously stirring for 45-50 min, and taking out to obtain the modified resin.
4. The ceramic-based fireproof coating according to claim 3, wherein the epoxy resin, the urea-formaldehyde resin and the nitrile rubber in step 1) are blended at a weight ratio of 40-45: 15-20: 3 to 6.
5. The ceramic-based fireproof coating according to claim 3, wherein the amount of the methyl pyrrolidone added in step 2) is 0.5-0.8% of the total mass of the mixture A; the adding amount of the silane coupling agent is 2.5-3% of the total mass of the mixture A; the adding amount of the methyl methacrylate is 1-2% of the total mass of the mixture A.
6. The ceramic-based fireproof coating according to claim 1 or 2, wherein the reinforcing filler is prepared by a method comprising the following steps:
a. correspondingly mixing the nano ceramic powder and kaolin according to the weight ratio of 5-7: 1, blending, and performing ball milling treatment for 30-35 min to obtain a blend B for later use;
b. and (B) immersing the blend B prepared in the step (a) into a modification solution, carrying out ultrasonic treatment for 1-2 h, filtering, and finally washing with deionized water and drying.
7. The ceramic-based fireproof coating of claim 6, wherein the preparation method of the modifying solution in step b is: putting methyl palmitate and glycerol into a reaction kettle together, adding sodium hydroxide accounting for 1-3% of the total mass of the methyl palmitate and the glycerol, continuously stirring for 25-30 min, adding nonylphenol polyoxyethylene ether into the reaction kettle, keeping the temperature of the reaction kettle at 80-85 ℃, raising the pressure to 0.28-0.32 MPa, and continuously stirring for 1-1.5 h to obtain a modified solution; the mixing molar ratio of the methyl palmitate to the glycerol is 2.0-2.4: 1; the addition amount of the nonylphenol polyoxyethylene ether is 20-26% of the total mass of the methyl palmitate.
8. The ceramic-based fireproof coating according to claim 1 or 2, wherein the additive is lanthanum nitrate or cerium nitrate; the inorganic suspending agent is fumed silica.
9. The preparation method of the ceramic-based fireproof coating is characterized by mixing all the raw materials according to the weight ratio and fully and uniformly stirring the mixture.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107936775A (en) * | 2017-12-22 | 2018-04-20 | 枞阳县三金颜料有限责任公司 | A kind of preparation method of heat-resistant, wear-resistant ceramic resin coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107936775A (en) * | 2017-12-22 | 2018-04-20 | 枞阳县三金颜料有限责任公司 | A kind of preparation method of heat-resistant, wear-resistant ceramic resin coating |
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Application publication date: 20210611 |