CN112812592A - Ultrathin fireproof water-based paint and preparation method thereof - Google Patents
Ultrathin fireproof water-based paint and preparation method thereof Download PDFInfo
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- CN112812592A CN112812592A CN202110012608.6A CN202110012608A CN112812592A CN 112812592 A CN112812592 A CN 112812592A CN 202110012608 A CN202110012608 A CN 202110012608A CN 112812592 A CN112812592 A CN 112812592A
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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
- 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
- C09D5/185—Intumescent paints
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Abstract
The invention relates to the technical field of fireproof water-based paint, in particular to ultrathin fireproof water-based paint which comprises the following components in parts by weight: the ultrathin fireproof water-based paint comprises, by weight, 40-60 parts of water, 45-65 parts of silica sol, 6-15 parts of butyl acrylate emulsion, 0.5-2 parts of melamine, 15-25 parts of an expansion filler, 4-8 parts of dodecyl dimethyl benzyl ammonium oxide, 0.1-0.5 part of a defoaming agent, 0.3-0.8 part of a thickening agent and 0.2-0.6 part of a multifunctional additive.
Description
Technical Field
The invention relates to the technical field of fireproof water-based paint, in particular to ultrathin fireproof water-based paint and a preparation method thereof.
Background
In recent years, with the increasing awareness of environmental protection, water-based fire-retardant coatings have received more and more attention. The water-based fireproof coating takes water as a solvent, so the price is lower than that of the oil-based fireproof coating, and the pollution to the atmosphere is reduced; the water-based paint only adopts a small amount of or does not adopt an organic solvent, so that the operation environment is improved, and meanwhile, the effects on reducing pollution and saving resources are obvious; the water-based paint coating has strong adhesive force and better adaptability to the surface of the material; the water-based paint construction coating tool can be cleaned by water, so that the consumption of a cleaning solvent is reduced; the water-based fireproof coating has good flattening performance, can be constructed at the positions of an inner cavity, a welding line, a corner angle, an edge and the like, and has good protection performance.
The flame retardant principle of the water-based fireproof coating is as follows: (1) inherently flame retardant or non-combustible. After the coating is heated in case of fire, a large amount of heat can be absorbed through physical changes such as melting and expansion and chemical actions such as decomposition and carbonization of components such as polymers and the like, and part of heat acting on an object is counteracted, so that the heating temperature rise process of the base material is delayed; (2) the incombustible inert gas is decomposed by heating when encountering fire, and the inflammable gas decomposed by heating of the protected substrate and oxygen in the air are diluted to inhibit combustion; (3) release active free radical when heated. The active free radical can slow down or stop the combustion chain reaction after being combined with the organic free radical; (4) the base material expands when heated to form an expanded carbon layer for heat insulation and oxygen insulation, and the base material is sealed, so that the base material is prevented from igniting and burning.
In the practical application of the fireproof coating in the existing market, the thickness of the coating is generally 20mm, and the problems of poor decoration and inconvenient construction can be caused by the excessively thick coating.
Therefore, we propose an ultra-thin fire-retardant water-based paint and a preparation method thereof to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an ultrathin fireproof water-based paint and a preparation method thereof.
An ultrathin fireproof water-based paint is composed of the following components in parts by weight: 40-60 parts of water, 45-65 parts of silica sol, 6-15 parts of butyl acrylate emulsion, 0.5-2 parts of melamine, 15-25 parts of expansion filler, 4-8 parts of dodecyl dimethyl benzyl ammonium oxide, 0.1-0.5 part of defoaming agent, 0.3-0.8 part of thickening agent and 0.2-0.6 part of multifunctional auxiliary agent.
Preferably, the composition consists of the following components in parts by weight: 50 parts of water, 55 parts of silica sol, 8 parts of butyl acrylate emulsion, 1 part of melamine, 20 parts of expansion filler, 6 parts of dodecyl dimethyl benzyl ammonium oxide, 0.3 part of defoaming agent, 0.5 part of thickening agent and 0.4 part of multifunctional auxiliary agent.
Preferably, the expansion filler consists of the following components in parts by weight: 20-30 parts of expandable graphite, 15-22 parts of perlite, 4-7 parts of titanium dioxide, 12-18 parts of vermiculite, 16-24 parts of diatomite, 15-22 parts of sodium sesquicarbonate, 25-35 parts of polymethyl methacrylate and 8-14 parts of octyl p-dimethylaminobenzoate.
Preferably, the preparation method of the expanded filler comprises the following steps: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for fully mixing, and mixing for 30-45 min to obtain mixed powder; adding the polymethyl methacrylate and the octyl p-dimethylaminobenzoate into a stirrer, stirring for 5-10 min, and heating to 150-180 ℃; adding the mixed powder into a stirrer, continuously stirring for 45-70 min, uniformly stirring, and granulating; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
Preferably, in the sieving process, the mesh number of the sieve is 400-600 meshes.
Preferably, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Preferably, the thickener is polyethylene glycol 1000.
Preferably, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Preferably, the preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine, an expansion filler and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 35-60 min, and performing ultrasonic dispersion for 25-35 min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuously stirring for 50-60 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Preferably, in S2, after the multifunctional assistant is added, the stirring kettle is vacuumized and stirred in a vacuum environment.
The invention has the beneficial effects that:
1. the ultrathin fireproof water-based paint provided by the invention is simple in preparation method, safe and easily available in raw materials, low in price, good in fireproof effect, thin in coating thickness in the construction process of the paint, convenient to construct and suitable for popularization and use.
2. The ultrathin fireproof water-based paint provided by the invention contains an expansion filler, the expansion filler internally comprises a plurality of easily expandable inorganic fillers, sodium sesquicarbonate, polymethyl methacrylate and octyl p-dimethylaminobenzoate, the sodium sesquicarbonate and the inorganic fillers are wrapped by the polymethyl methacrylate during preparation, the sodium sesquicarbonate is not easily dissolved by water after being wrapped by the polymethyl methacrylate, the octyl p-dimethylaminobenzoate can improve the compatibility of the inorganic fillers and the water-based paint, in the use process of the paint, the inorganic fillers can expand when meeting high temperature, the sodium sesquicarbonate can be decomposed to generate carbon dioxide and the like, the paint can be thickened to play a role in relieving heat transfer, and the carbon dioxide can play a certain flame-retardant role.
3. The ultrathin fireproof water-based paint provided by the invention contains dodecyl dimethyl benzyl ammonium oxide and melamine in the interior, the dodecyl dimethyl benzyl ammonium oxide is matched with the melamine, the flame retardant property of the paint can be effectively improved, and the dodecyl dimethyl benzyl ammonium oxide has stronger viscosity at high temperature, is matched with an expansion filler, can enable the expansion filler to be tightly connected and not easy to fall off, and improves the stability of the paint at high temperature.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
In example 1, an ultrathin fireproof water-based paint is composed of the following components in parts by weight: 40 parts of water, 45 parts of silica sol, 6 parts of butyl acrylate emulsion, 0.5 part of melamine, 15 parts of expansion filler, 4 parts of dodecyl dimethyl benzyl ammonium oxide, 0.1 part of defoaming agent, 0.3 part of thickening agent and 0.2 part of multifunctional additive.
Further, the expansion filler comprises the following components in parts by weight: 20 parts of expandable graphite, 15 parts of perlite, 4 parts of titanium dioxide, 12 parts of vermiculite, 16 parts of diatomite, 15 parts of sodium sesquicarbonate, 25 parts of polymethyl methacrylate and 8 parts of octyl p-dimethylaminobenzoate.
Further, the preparation method of the expanded filler comprises the following steps: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for fully mixing for 30min to obtain mixed powder; adding polymethyl methacrylate and octyl p-dimethylaminobenzoate into a stirrer, stirring for 5min, and heating to 150 ℃; adding the mixed powder into a stirrer, continuously stirring for 45min, uniformly stirring and granulating; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
Furthermore, in the sieving process, the mesh number of the sieve is 400 meshes.
Furthermore, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Further, the thickener is polyethylene glycol 1000.
Further, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Further, a preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine, an expansion filler and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 35min, and then performing ultrasonic dispersion for 25min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuing stirring for 50 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Further, in S2, after the multifunctional additive is added, the stirring tank is vacuumized and stirred in a vacuum environment.
In embodiment 2, an ultrathin fireproof water-based paint is composed of the following components in parts by weight: 60 parts of water, 65 parts of silica sol, 15 parts of butyl acrylate emulsion, 2 parts of melamine, 25 parts of expansion filler, 8 parts of dodecyl dimethyl benzyl ammonium oxide, 0.5 part of defoaming agent, 0.8 part of thickening agent and 0.6 part of multifunctional additive.
Further, the expansion filler comprises the following components in parts by weight: 30 parts of expandable graphite, 22 parts of perlite, 7 parts of titanium dioxide, 18 parts of vermiculite, 24 parts of diatomite, 22 parts of sodium sesquicarbonate, 25-35 parts of polymethyl methacrylate and 14 parts of octyl p-dimethylaminobenzoate.
Further, the preparation method of the expanded filler comprises the following steps: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for full mixing for 45min to obtain mixed powder; adding polymethyl methacrylate and octyl p-dimethylaminobenzoate into a stirrer, stirring for 10min, and heating to 180 ℃; adding the mixed powder into a stirrer, continuously stirring for 70min, uniformly stirring, and granulating; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
Furthermore, in the sieving process, the mesh number of the sieve is 600 meshes.
Furthermore, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Further, the thickener is polyethylene glycol 1000.
Further, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Further, a preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine, an expansion filler and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 60min, and then performing ultrasonic dispersion for 35min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuing stirring for 60 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Further, in S2, after the multifunctional additive is added, the stirring tank is vacuumized and stirred in a vacuum environment.
In embodiment 3, an ultrathin fireproof water-based paint is composed of the following components in parts by weight: 50 parts of water, 55 parts of silica sol, 8 parts of butyl acrylate emulsion, 1 part of melamine, 20 parts of expansion filler, 6 parts of dodecyl dimethyl benzyl ammonium oxide, 0.3 part of defoaming agent, 0.5 part of thickening agent and 0.4 part of multifunctional auxiliary agent.
Further, the expansion filler comprises the following components in parts by weight: 25 parts of expandable graphite, 20 parts of perlite, 5 parts of titanium dioxide, 15 parts of vermiculite, 20 parts of diatomite, 18 parts of sodium sesquicarbonate, 30 parts of polymethyl methacrylate and 12 parts of octyl p-dimethylaminobenzoate.
Further, the preparation method of the expanded filler comprises the following steps: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for fully mixing for 40min to obtain mixed powder; adding polymethyl methacrylate and octyl p-dimethylaminobenzoate into a stirrer, stirring for 8min, and heating to 160 ℃; adding the mixed powder into a stirrer, continuously stirring for 60min, and granulating after uniformly stirring; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
Furthermore, in the sieving process, the mesh number of the sieve is 600 meshes.
Furthermore, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Further, the thickener is polyethylene glycol 1000.
Further, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Further, a preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine, an expansion filler and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 50min, and then performing ultrasonic dispersion for 30min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuing stirring for 55 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Further, in S2, after the multifunctional additive is added, the stirring tank is vacuumized and stirred in a vacuum environment.
In comparative example 1, an ultrathin fireproof water-based paint is composed of the following components in parts by weight: 50 parts of water, 55 parts of silica sol, 8 parts of butyl acrylate emulsion, 1 part of melamine, 6 parts of dodecyl dimethyl benzyl ammonium oxide, 0.3 part of defoaming agent, 0.5 part of thickening agent and 0.4 part of multifunctional additive.
Furthermore, in the sieving process, the mesh number of the sieve is 600 meshes.
Furthermore, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Further, the thickener is polyethylene glycol 1000.
Further, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Further, a preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 50min, and performing ultrasonic dispersion for 30min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuing stirring for 55 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Further, in S2, after the multifunctional additive is added, the stirring tank is vacuumized and stirred in a vacuum environment.
In comparative example 2, an ultrathin fireproof water-based paint is composed of the following components in parts by weight: 50 parts of water, 55 parts of silica sol, 8 parts of butyl acrylate emulsion, 1 part of melamine, 20 parts of expansion filler, 0.3 part of defoaming agent, 0.5 part of thickening agent and 0.4 part of multifunctional auxiliary agent.
Further, the expansion filler comprises the following components in parts by weight: 25 parts of expandable graphite, 20 parts of perlite, 5 parts of titanium dioxide, 15 parts of vermiculite, 20 parts of diatomite, 18 parts of sodium sesquicarbonate, 30 parts of polymethyl methacrylate and 12 parts of octyl p-dimethylaminobenzoate.
Further, the preparation method of the expanded filler comprises the following steps: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for fully mixing for 40min to obtain mixed powder; adding polymethyl methacrylate and octyl p-dimethylaminobenzoate into a stirrer, stirring for 8min, and heating to 160 ℃; adding the mixed powder into a stirrer, continuously stirring for 60min, and granulating after uniformly stirring; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
Furthermore, in the sieving process, the mesh number of the sieve is 600 meshes.
Furthermore, the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
Further, the thickener is polyethylene glycol 1000.
Further, the multifunctional auxiliary agent is a multifunctional auxiliary agent AMP-95.
Further, a preparation method of the ultrathin fireproof water-based paint comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine and an expansion filler into a stirring kettle, stirring for 50min, and then performing ultrasonic dispersion for 30min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuing stirring for 55 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
Further, in S2, after the multifunctional additive is added, the stirring tank is vacuumized and stirred in a vacuum environment.
The following fire-retardant water-based paint prepared in examples 1 to 3 and comparative examples 1 to 2 was subjected to a fire resistance test according to GB14907-2002, and the test results are shown in Table 1:
TABLE 1
As can be seen from Table 1, the fire-resistant water-based coatings prepared in examples 1-3 are excellent in fire resistance, and the coatings are obviously thickened during the test; in comparative example 1, no expansion filler was added, the fire resistance was significantly reduced, and the thickness of the coating was not significantly changed during the test; in comparative example 2, in which dodecyldimethylbenzylammonium oxide was not added, the fire resistance was reduced, and the thickness of the coating was significantly increased during the test, but some cracks were generated in the coating.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The ultrathin fireproof water-based paint is characterized by comprising the following components in parts by weight: 40-60 parts of water, 45-65 parts of silica sol, 6-15 parts of butyl acrylate emulsion, 0.5-2 parts of melamine, 15-25 parts of expansion filler, 4-8 parts of dodecyl dimethyl benzyl ammonium oxide, 0.1-0.5 part of defoaming agent, 0.3-0.8 part of thickening agent and 0.2-0.6 part of multifunctional auxiliary agent.
2. The ultrathin fireproof water-based paint of claim 1, which is characterized by comprising the following components in parts by weight: 50 parts of water, 55 parts of silica sol, 8 parts of butyl acrylate emulsion, 1 part of melamine, 20 parts of expansion filler, 6 parts of dodecyl dimethyl benzyl ammonium oxide, 0.3 part of defoaming agent, 0.5 part of thickening agent and 0.4 part of multifunctional auxiliary agent.
3. The ultrathin fireproof aqueous coating of claim 1, wherein the intumescent filler consists of the following components in parts by weight: 20-30 parts of expandable graphite, 15-22 parts of perlite, 4-7 parts of titanium dioxide, 12-18 parts of vermiculite, 16-24 parts of diatomite, 15-22 parts of sodium sesquicarbonate, 25-35 parts of polymethyl methacrylate and 8-14 parts of octyl p-dimethylaminobenzoate.
4. The ultrathin fireproof waterborne coating of claim 3, wherein the intumescent filler is prepared by a method comprising the steps of: placing expandable graphite, perlite, titanium dioxide, vermiculite, diatomite and sodium sesquicarbonate into a ball mill for fully mixing, and mixing for 30-45 min to obtain mixed powder; adding the polymethyl methacrylate and the octyl p-dimethylaminobenzoate into a stirrer, stirring for 5-10 min, and heating to 150-180 ℃; adding the mixed powder into a stirrer, continuously stirring for 45-70 min, uniformly stirring, and granulating; and finally, crushing, grinding and sieving the granules obtained by granulation to obtain the expansion filler.
5. The ultrathin fireproof water-based paint as claimed in claim 4, wherein the mesh number of the screen is 400-600 meshes in the screening process.
6. The ultrathin fireproof water-based paint of claim 1, wherein the defoaming agent is one of an organic silicon defoaming agent, a polyether defoaming agent or a mineral oil defoaming agent.
7. The ultra-thin fire-retardant water-based paint as claimed in claim 1, wherein the thickener is polyethylene glycol 1000.
8. The ultrathin fireproof water-based paint of claim 1, wherein the multifunctional additive is multifunctional additive AMP-95.
9. The method for preparing the ultrathin fireproof water-based paint according to any one of claims 1 to 8, wherein the method comprises the following steps:
s1, adding water, silica sol, butyl acrylate emulsion, melamine, an expansion filler and dodecyl dimethyl benzyl ammonium oxide into a stirring kettle, stirring for 35-60 min, and performing ultrasonic dispersion for 25-35 min after stirring;
s2, adding a defoaming agent and a thickening agent into the mixture obtained in the step S1, and continuously stirring for 50-60 min;
s3, adding the multifunctional additive into the mixture obtained in the step S2, and stirring uniformly to obtain the ultrathin fireproof water-based paint.
10. The method for preparing the ultrathin fireproof water-based paint of claim 9, wherein the stirring kettle is vacuumized and stirred in a vacuum environment after the multifunctional assistant is added in the S2.
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