CN114790358A - Rare earth fireproof coating for building walls - Google Patents
Rare earth fireproof coating for building walls Download PDFInfo
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- CN114790358A CN114790358A CN202210620586.6A CN202210620586A CN114790358A CN 114790358 A CN114790358 A CN 114790358A CN 202210620586 A CN202210620586 A CN 202210620586A CN 114790358 A CN114790358 A CN 114790358A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
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Abstract
The invention discloses a rare earth fireproof coating for building walls, which is characterized in that: comprises the following components in parts by weight: 8-12 parts of organic silicon modified alkyd resin, 4-6 parts of kaolin, 7-12 parts of propylene glycol, 8-12 parts of rare earth neodymium oxide, 12-17 parts of rare earth gadolinium oxide, 18-23 parts of silica aerogel suspension, 3-7 parts of stabilizer, 3-6 parts of moisture-proof agent, 3-6 parts of preservative, 4-7 parts of nano titanium dioxide, 6-8 parts of nano magnesium aluminum silicate and 30-40 parts of water; the fireproof coating disclosed by the invention can resist a high temperature of 1200 ℃, and has good cohesiveness and weather resistance.
Description
Technical Field
The invention relates to a coating composition, in particular to a rare earth fireproof coating for building walls.
Background
The fireproof paint can improve the fire resistance of the material, slow down the spreading speed of flame or prevent burning in a certain time by brushing the paint on the surface of the material, and the paint becomes the fireproof paint which is also called as a flame retardant paint.
The fireproof coating can slow down the spreading speed of flame, isolate heat and strive for precious time for rescue.
The patent technology with publication number CN106587767B 'fireproof weather-proof heat-insulation coating for building exterior walls and a preparation method thereof' discloses a fireproof weather-proof heat-insulation coating for building exterior walls, which is prepared from the following raw materials in parts by weight: 5-10 parts of iron ore powder, 8-12 parts of diatomite, 5-10 parts of cement, 5-9 parts of vermiculite powder, 3-8 parts of ceramic powder, 1-2 parts of zirconia ceramic microbeads, 5-12 parts of anti-cracking fibers, 5-10 parts of methyl cellulose, 2-5 parts of sodium carboxymethylcellulose, 2-4 parts of sulfanilic acid, 1-2 parts of polyvinyl ester, 1-2 parts of tetramethylguanidine, 1-2 parts of sodium sulfite, 2-5 parts of sodium hexametaphosphate, 1-4 parts of a water reducing agent, 2-3 parts of a stabilizer and 1-3 parts of a coupling agent; the preparation method comprises the following steps: (1) weighing the raw materials in parts by weight; (2) adding iron ore powder, diatomite, cement, vermiculite powder, ceramic powder and zirconia ceramic microbeads into a three-roll grinding machine for cutting and crushing, wherein the stirring speed is 50 revolutions per minute, and the power of the grinding machine is 550W; (3) mixing the anti-crack fiber, the methylcellulose, the sodium carboxymethylcellulose, the sulfanilic acid, the polyvinyl ester, the tetramethylguanidine, the stabilizer, the coupling agent and the ground crushed material in the step (2), adding into a high-temperature mixing furnace, heating to the temperature of 320 ℃ at 280 ℃, reacting for 15 minutes, and stirring at 200 revolutions per minute at the speed of 150-; (4) cooling the mixture obtained in the step (3) to room temperature, adding sodium sulfite, sodium hexametaphosphate and a water reducing agent, uniformly stirring, and standing for 1-2 hours; (5) screening and sorting the standing mixture obtained in the step (4), wherein the screen aperture is 100-150 meshes; (6) and (4) injecting the sieved mixture obtained in the step (5) into a mold, curing for 1-2 hours in a carbon dioxide gas environment, then demolding, cutting and forming to obtain a finished product. The fireproof weather-resistant heat-insulating coating for the building outer wall needs to react in a high-temperature mixing furnace for a period of time, and needs to be manufactured by a mold, so that the preparation process is complex.
The patent application publication No. CN 107652803A discloses a coating with brick-imitating elastic texture and a preparation method thereof, which comprises the following raw materials in parts by weight: 50-60 parts of acrylic elastic emulsion, 20-30 parts of alkyd resin emulsion, 2-5 parts of magnesium aluminum silicate, 1-3 parts of coumarone resin, 0.5-2 parts of triisooctyl phosphite, 0.5-2 parts of butyl hydroxy anisole, 5-8 parts of ethyl acetate, 0.2-1 part of sulfonated castor oil, 2-4 parts of graphene oxide, 0.5-2 parts of polyoxypropylene ethylene oxide glycerol ether, 1-3 parts of organic bentonite, 4-8 parts of precipitated calcium carbonate, 4-8 parts of quartz sand, 4-8 parts of mica powder, 0.5-2 parts of drier, 0.5-2 parts of dispersant, 0.5-2 parts of preservative, 2-4 parts of film forming additive, 0.5-2 parts of polyvinylpyrrolidone and 50-60 parts of water. The acrylic elastic resin is added into the paint, so that the paint has good bonding strength, has good bonding force with an outer wall material, and is not easy to fall off; but the acrylic elastic resin is easy to volatilize pungent odor and has poor environmental protection property.
Disclosure of Invention
The invention provides a rare earth fireproof coating for building walls, which has good fireproof performance, simple preparation process and good environmental protection property, and the specific adopted technical scheme is as follows:
a rare earth fireproof coating for building walls comprises the following components in parts by weight: 8-12 parts of organic silicon modified alkyd resin, 4-6 parts of kaolin, 7-12 parts of propylene glycol, 8-12 parts of rare earth neodymium oxide, 12-17 parts of rare earth gadolinium oxide, 18-23 parts of silica aerogel suspension, 3-7 parts of stabilizer, 3-6 parts of moisture-proof agent, 3-6 parts of preservative, 4-7 parts of nano titanium dioxide, 6-8 parts of nano magnesium aluminum silicate and 30-40 parts of water;
the preparation method of the organic silicon modified alkyd resin comprises the following steps: the method comprises the following steps of (1) reacting linseed oil, pentaerythritol and a catalyst LiOH at 220-230 ℃ until the tolerance is 8-12, then adding phthalic anhydride, heating to 230-240 ℃, reacting until the acid value reaches 14-16, cooling to 100-110 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; adding hydroxyl siloxane, taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3-4 h, and removing the solvent after the reaction is finished; wherein the content of the hydroxyl siloxane is 45-50% of that of the alkyd resin.
Preferably, the rare earth fireproof coating for the building wall comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 7 parts of nano magnesium aluminum silicate and 35 parts of water.
Preferably, the preparation of the silicone-modified alkyd resin comprises the following steps: the method comprises the steps of reacting linseed oil, pentaerythritol and a catalyst LiOH at 220 ℃ until the tolerance is 8-10, adding phthalic anhydride, heating to 230 ℃, reacting until the acid value reaches 14-15, cooling to 100 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; adding hydroxyl siloxane, taking tetraisopropyl titanate as a catalyst, heating to 130 ℃, reacting for 3-4 h, and removing the solvent after the reaction is finished; wherein the content of the hydroxyl siloxane is 45-48% of that of the alkyd resin.
Preferably, the silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water.
Preferably, the stabilizer is a dispersion stabilizer, the preservative is a kasong preservative, and the moisture-proof agent is a mineral moisture-proof agent.
The invention also provides a preparation method of the rare earth fireproof coating for the building wall, which comprises the following steps:
s1, taking the materials according to the proportion of any one of claims 1 to 6, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding into the solution A, and mixing uniformly to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
The invention has the beneficial effects that:
1) the organic silicon modified alkyd resin coating has the advantages of good heat resistance, ultraviolet aging resistance and water resistance on the basis of keeping the room-temperature curing and good physical and mechanical properties of a coating film of the alkyd resin coating;
2) compared with the alkyd resin prepared by using oleic acid and glycerol and selecting linseed oil and pentaerythritol, the alkyd resin has a rich three-dimensional network structure; compared with the method that the alkyd resin is modified by adopting a silicone intermediate, hydroxyl is introduced into the modified alkyd resin obtained by modifying the alkyd resin by adopting hydroxyl siloxane, so that the modified alkyd resin has good adhesive force;
3) the silicon aerogel powder is coated and modified to form a silicon aerogel suspension, and compared with the silicon aerogel powder, the silicon aerogel suspension has the following effects: the dispersibility of the silica aerogel suspension in the system is improved, and the heat insulation and fire prevention effects are improved; in addition, the collapse of the silicon aerogel nano-pore structure can be avoided to a certain extent.
4) The nanometer magnesium aluminum silicate forms a three-dimensional network structure in an aqueous medium, has excellent adsorption performance, thickening performance and suspension performance, can enhance the dispersibility of the silica aerogel suspension, and further improves the heat insulation and fire prevention effects;
5) the modified alkyd resin prepared by the invention has rich three-dimensional network structure, is matched with nano magnesium aluminum silicate, and is beneficial to further enhancing the dispersibility of the silica aerogel suspension;
6) in the prior art, the addition of the magnesium aluminum silicate is generally 0.5-1.5%, in the invention, the addition of the nano magnesium aluminum silicate is 4-8%, when the addition is less than 4%, the cohesiveness and heat insulation performance of a system can be obviously reduced, and when the addition is more than 8%, a coating is too thick and the adhesive force is poor;
7) in the process of modifying alkyd resin with organosilicon, when the content of hydroxy siloxane is 40% of that of alkyd resin, the adhesive force of the system is reduced.
8) The fireproof coating prepared by the invention can resist the high temperature of 1200 ℃.
Detailed Description
Example 1
The preparation of the organic silicon modified alkyd resin comprises the following steps: linseed oil, pentaerythritol and a catalyst LiOH are reacted at 220-230 ℃ until the tolerance is 8, phthalic anhydride is added, then the temperature is raised to 230-240 ℃, the reaction is carried out until the acid value reaches 14, the temperature is lowered to 100-110 ℃ to obtain alkyd resin, No. 200 solvent oil and xylene are added into the alkyd resin, and the alkyd resin solution is obtained by uniformly mixing; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 45 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished. In the invention: the content of the hydroxyl siloxane is 45 percent of that of the alkyd resin, and specifically, the weight of the added hydroxyl siloxane is 45 percent of that of the alkyd resin.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
A rare earth fireproof coating for building walls comprises the following components in parts by weight: 8 parts of organic silicon modified alkyd resin, 4 parts of kaolin, 7 parts of propylene glycol, 8 parts of rare earth neodymium oxide, 12 parts of rare earth gadolinium oxide, 18 parts of silica aerogel suspension, 3 parts of stabilizer, 3 parts of moisture-proof agent, 3 parts of preservative, 4 parts of nano titanium dioxide, 6 parts of nano magnesium aluminum silicate and 30 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding into the solution A, and mixing uniformly to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Example 2
The preparation of the organic silicon modified alkyd resin comprises the following steps: linseed oil, pentaerythritol and a catalyst LiOH are reacted at 220-230 ℃ until the tolerance is 12, phthalic anhydride is added, then the temperature is raised to 230-240 ℃, the reaction is carried out until the acid value reaches 16, the temperature is lowered to 100-110 ℃ to obtain alkyd resin, No. 200 solvent oil and xylene are added into the alkyd resin, and the alkyd resin solution is obtained by uniformly mixing; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 50 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 4 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and (3) uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
A rare earth fireproof coating for building walls comprises the following components in parts by weight: 12 parts of organic silicon modified alkyd resin, 6 parts of kaolin, 12 parts of propylene glycol, 12 parts of rare earth neodymium oxide, 17 parts of rare earth gadolinium oxide, 23 parts of silica aerogel suspension, 7 parts of stabilizer, 6 parts of moisture-proof agent, 6 parts of preservative, 7 parts of nano titanium dioxide, 8 parts of nano magnesium aluminum silicate and 40 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Example 3
The preparation of the organic silicon modified alkyd resin comprises the following steps: linseed oil, pentaerythritol and a catalyst LiOH are reacted at 220-230 ℃ until the tolerance is 10, phthalic anhydride is added, then the temperature is raised to 230-240 ℃, the reaction is carried out until the acid value reaches 15, the temperature is lowered to 100-110 ℃ to obtain alkyd resin, No. 200 solvent oil and xylene are added into the alkyd resin, and the alkyd resin solution is obtained by uniformly mixing; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 47 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and (3) uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
A rare earth fireproof coating for building walls comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 7 parts of nano magnesium aluminum silicate and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Comparative example 1
The preparation of the organic silicon modified alkyd resin comprises the following steps: the method comprises the steps of reacting linseed oil, pentaerythritol and a catalyst LiOH at 220-230 ℃ until the tolerance is 10, adding phthalic anhydride, heating to 230-240 ℃, reacting until the acid value reaches 15, cooling to 100-110 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 47 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
The rare earth fireproof coating for the building wall comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 2 parts of nano magnesium aluminum silicate and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion of the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding into the solution A, and mixing uniformly to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Comparative example 2
The preparation of the organic silicon modified alkyd resin comprises the following steps: the method comprises the steps of reacting linseed oil, pentaerythritol and a catalyst LiOH at 220-230 ℃ until the tolerance is 10, adding phthalic anhydride, heating to 230-240 ℃, reacting until the acid value reaches 15, cooling to 100-110 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 47 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and (3) uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
The rare earth fireproof coating for the building wall comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 12 parts of nano magnesium aluminum silicate and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Comparative example 3
The preparation of the organic silicon modified alkyd resin comprises the following steps: linseed oil, pentaerythritol and a catalyst LiOH are reacted at 220-230 ℃ until the tolerance is 10, phthalic anhydride is added, then the temperature is raised to 230-240 ℃, the reaction is carried out until the acid value reaches 15, the temperature is lowered to 100-110 ℃ to obtain alkyd resin, No. 200 solvent oil and xylene are added into the alkyd resin, and the alkyd resin solution is obtained by uniformly mixing; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 40 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
A rare earth fireproof coating for building walls comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 7 parts of nano magnesium aluminum silicate and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding into the solution A, and mixing uniformly to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
Comparative example 4
The preparation of the organic silicon modified alkyd resin comprises the following steps: linseed oil, pentaerythritol and a catalyst LiOH are reacted at 220-230 ℃ until the tolerance is 10, phthalic anhydride is added, then the temperature is raised to 230-240 ℃, the reaction is carried out until the acid value reaches 15, the temperature is lowered to 100-110 ℃ to obtain alkyd resin, No. 200 solvent oil and xylene are added into the alkyd resin, and the alkyd resin solution is obtained by uniformly mixing; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 47 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
A rare earth fireproof coating for building walls comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
and S3, adding the prepared silica aerogel suspension into the solution B, and uniformly dispersing to obtain the fireproof coating.
Comparative example 5
The preparation of the organic silicon modified alkyd resin comprises the following steps: the method comprises the steps of reacting linseed oil, pentaerythritol and a catalyst LiOH at 220-230 ℃ until the tolerance is 10, adding phthalic anhydride, heating to 230-240 ℃, reacting until the acid value reaches 15, cooling to 100-110 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; and adding hydroxyl siloxane (the content of the hydroxyl siloxane is 40 percent of that of the alkyd resin), taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3 hours, and removing the solvent by using a rotary evaporator after the reaction is finished.
The silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water; the preparation method comprises the following steps: and (3) uniformly mixing water and sucrose monostearate, adding the silica aerogel and the epoxy resin emulsion, and uniformly mixing to form a silica aerogel suspension.
The rare earth fireproof coating for the building wall comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 7 parts of nano magnesium aluminum silicate and 35 parts of water.
A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion in the embodiment, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
The test method comprises the following steps:
the heat conductivity coefficient is tested according to GB/T10294-.
The fireproof coatings prepared in examples 1 to 3 and comparative examples 1 to 4 were tested according to the above test standards, and the test results are shown in table 1.
TABLE 1 test results of examples and comparative examples
As can be seen from Table 1, the fire resistance and adhesion of the coating system are remarkably reduced as the nano magnesium aluminum silicate is not added in the comparative example 4; the three-dimensional network structure formed by proper content of magnesium aluminum silicate is helpful for dispersing the silica aerogel suspension, so that the heat insulation performance of the silica aerogel can be fully exerted, and on the other hand, the magnesium aluminum silicate is helpful for improving the systematic caking property.
As can be seen from table 1, the content of magnesium aluminum silicate added in comparative example 1 is 1.5%, which is too low, so that the heat insulation and adhesion of the coating system are reduced; the content of magnesium aluminum silicate added in comparative example 3 is 9.4%, which is too high, so that the adhesion of the coating system is lowered.
As can be seen from table 1, the thermal insulation and adhesion of the system are significantly reduced when magnesium aluminum silicate is not present in the formulation.
As can be seen from Table 1, the adhesion of the coating system decreases when the content of hydroxysiloxane is 40% (below 45%).
Claims (6)
1. The rare earth fireproof coating for the building wall is characterized in that: comprises the following components in parts by weight: 8-12 parts of organic silicon modified alkyd resin, 4-6 parts of kaolin, 7-12 parts of propylene glycol, 8-12 parts of rare earth neodymium oxide, 12-17 parts of rare earth gadolinium oxide, 18-23 parts of silica aerogel suspension, 3-7 parts of stabilizer, 3-6 parts of moisture-proof agent, 3-6 parts of preservative, 4-7 parts of nano titanium dioxide, 6-8 parts of nano magnesium aluminum silicate and 30-40 parts of water;
the preparation method of the organic silicon modified alkyd resin comprises the following steps: the method comprises the following steps of (1) reacting linseed oil, pentaerythritol and a catalyst LiOH at 220-230 ℃ until the tolerance is 8-12, then adding phthalic anhydride, heating to 230-240 ℃, reacting until the acid value reaches 14-16, cooling to 100-110 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; then adding hydroxyl siloxane, taking tetraisopropyl titanate as a catalyst, heating to 125-135 ℃, reacting for 3-4 h, and removing the solvent after the reaction is finished; wherein the content of the hydroxyl siloxane is 45-50% of that of the alkyd resin.
2. The rare earth fireproof coating for building walls according to claim 1, wherein: comprises the following components in parts by weight: 10 parts of organic silicon modified alkyd resin, 5 parts of kaolin, 10 parts of propylene glycol, 10 parts of rare earth neodymium oxide, 15 parts of rare earth gadolinium oxide, 20 parts of silica aerogel suspension, 5 parts of stabilizer, 5 parts of moisture-proof agent, 5 parts of preservative, 5 parts of nano titanium dioxide, 7 parts of nano magnesium aluminum silicate and 35 parts of water.
3. The rare earth fireproof coating for building walls according to claim 2, wherein: the preparation method of the organic silicon modified alkyd resin comprises the following steps: the method comprises the steps of reacting linseed oil, pentaerythritol and a catalyst LiOH at 220 ℃ until the tolerance is 8-10, adding phthalic anhydride, heating to 230 ℃, reacting until the acid value reaches 14-15, cooling to 100 ℃ to obtain alkyd resin, adding No. 200 solvent oil and xylene into the alkyd resin, and uniformly mixing to obtain an alkyd resin solution; adding hydroxyl siloxane, taking tetraisopropyl titanate as a catalyst, heating to 130 ℃, reacting for 3-4 h, and removing the solvent after the reaction is finished; wherein the content of the hydroxyl siloxane is 45-48% of that of the alkyd resin.
4. The rare earth fireproof coating for building walls according to claim 3, wherein: the silica aerogel suspension is a stable dispersion system formed by uniformly mixing 40 wt% of silica aerogel, 5 wt% of sucrose monostearate, 10 wt% of epoxy resin emulsion and 45 wt% of water.
5. The rare earth fireproof coating for building walls according to claim 3, wherein: the stabilizer is a dispersion stabilizer, the preservative is a kasong preservative, and the moisture-proof agent is a mineral moisture-proof agent.
6. A preparation method of rare earth fireproof paint for building walls comprises the following steps:
s1, taking materials according to the proportion of any one of claims 1 to 5, and uniformly mixing the organic silicon modified alkyd resin, propylene glycol and water to obtain a solution A;
s2, ball-milling kaolin, titanium dioxide, rare earth neodymium oxide and rare earth gadolinium oxide, sieving by a 400-mesh sieve, adding the sieved powder into the solution A, and uniformly mixing to obtain a solution B;
s3, adding nano magnesium aluminum silicate into the solution B, and uniformly mixing to obtain slurry C;
and S4, adding the prepared silica aerogel suspension into the slurry C, and uniformly dispersing to obtain the fireproof coating.
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| US20070272902A1 (en) * | 2006-05-25 | 2007-11-29 | Aspen Aerogels, Inc. | Aerogel compositions with enhanced performance |
| CN104086761A (en) * | 2014-06-05 | 2014-10-08 | 华南理工大学 | Aqueous organosilicone-modified alkyd resin and preparing method thereof |
| CN105315743A (en) * | 2014-07-29 | 2016-02-10 | 金承黎 | Nano porous corrosion-resistant heat-insulated coating material taking thixotropic colloid as template agent and preparation method for corrosion-resistant heat-insulated coating material |
| CN112409830A (en) * | 2020-12-01 | 2021-02-26 | 汇克涂料(湖南)有限公司 | Inorganic fireproof heat-insulating coating and preparation method thereof |
| CN113831835A (en) * | 2021-09-18 | 2021-12-24 | 江苏龙冶节能科技有限公司 | Heat insulation coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070272902A1 (en) * | 2006-05-25 | 2007-11-29 | Aspen Aerogels, Inc. | Aerogel compositions with enhanced performance |
| CN104086761A (en) * | 2014-06-05 | 2014-10-08 | 华南理工大学 | Aqueous organosilicone-modified alkyd resin and preparing method thereof |
| CN105315743A (en) * | 2014-07-29 | 2016-02-10 | 金承黎 | Nano porous corrosion-resistant heat-insulated coating material taking thixotropic colloid as template agent and preparation method for corrosion-resistant heat-insulated coating material |
| CN112409830A (en) * | 2020-12-01 | 2021-02-26 | 汇克涂料(湖南)有限公司 | Inorganic fireproof heat-insulating coating and preparation method thereof |
| CN113831835A (en) * | 2021-09-18 | 2021-12-24 | 江苏龙冶节能科技有限公司 | Heat insulation coating and preparation method thereof |
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