CN117363116A - Water-based intumescent fireproof coating and preparation method thereof - Google Patents
Water-based intumescent fireproof coating and preparation method thereof Download PDFInfo
- Publication number
- CN117363116A CN117363116A CN202311325118.7A CN202311325118A CN117363116A CN 117363116 A CN117363116 A CN 117363116A CN 202311325118 A CN202311325118 A CN 202311325118A CN 117363116 A CN117363116 A CN 117363116A
- Authority
- CN
- China
- Prior art keywords
- parts
- water
- retardant coating
- intumescent fire
- fire retardant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 42
- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003063 flame retardant Substances 0.000 claims abstract description 39
- 239000000839 emulsion Substances 0.000 claims abstract description 35
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 238000000227 grinding Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 9
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 9
- 239000007798 antifreeze agent Substances 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 9
- 238000009736 wetting Methods 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 8
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 7
- 229920000877 Melamine resin Polymers 0.000 claims description 7
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 150000003384 small molecules Chemical class 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 19
- -1 polysiloxane Polymers 0.000 abstract description 8
- 229920001296 polysiloxane Polymers 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 238000006068 polycondensation reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 2
- 239000007857 degradation product Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000013530 defoamer Substances 0.000 description 5
- 238000003760 magnetic stirring Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of fireproof paint, in particular to a water-based expansion type fireproof paint and a preparation method thereof, wherein modified emulsion is added in a formula, so that the performance of the fireproof paint is greatly improved; the thermal degradation product of the dihydroxy-terminated polyphosphonate at high temperature can rapidly dehydrate and carbonize the surface of the material, and can form a compact carbonization layer on the surface of the material, thereby blocking heat transfer and improving the flame retardant effect of the water-based intumescent fire retardant coating; meanwhile, during polycondensation reaction of polysiloxane and dihydroxy end-capped polyphosphonate, a cross-linking network can be formed between hydroxyl groups and active groups, so that the strength and toughness of the material are improved.
Description
Technical Field
The invention relates to the technical field of fireproof coatings, in particular to a water-based intumescent fireproof coating and a preparation method thereof.
Background
The expansion type fireproof paint is a special paint with fireproof performance, and is widely used in various steel structure buildings due to the advantages of low application film thickness, small coating self weight, good decoration, convenient construction and the like, the main components of the expansion type fireproof paint comprise an expanding agent, an adhesive and a filler, the expanding agent is usually inorganic salts or organic compounds, and when the expansion type fireproof paint encounters high temperature, chemical reaction or physical change can occur, and a large amount of gas is generated so as to expand the paint; adhesives are used to provide adhesion and weatherability of the coating, and common adhesives are polymers, adhesives, and the like; the filler is used to increase the thickness and fire resistance of the coating.
The expansion type fireproof paint has the action mechanism that an expansion layer is formed under the high temperature condition mainly through the action of an expansion agent, so that the effects of heat insulation and fire spreading prevention are achieved, when the paint encounters a fire disaster, the expansion agent can be rapidly decomposed or expanded to generate a large amount of gas to form a heat insulation layer, the spread of the fire disaster is blocked, and meanwhile, the adhesive and the filler in the paint can play a certain role of heat insulation and flame retardance, so that the fireproof effect is improved. According to dispersion media, the intumescent fire-retardant coating can be classified into aqueous and solvent type, the traditional solvent type fire-retardant coating has high VOC emission (300-500 g/L), combustibility and explosiveness, and the aqueous conversion is an important conversion direction of the intumescent fire-retardant coating, but the aqueous intumescent fire-retardant coating prepared by the prior art has the problems of unstable performance, poor weather resistance and low coating strength, and the development of a novel preparation method of the aqueous intumescent fire-retardant coating is needed.
Disclosure of Invention
The invention aims to solve the technical problems that: the water-based intumescent fire-retardant coating prepared by the prior art has unstable performance, poor weather resistance and low coating strength, and the problems in the background art are solved by providing the water-based intumescent fire-retardant coating and the preparation method thereof.
In order to achieve the above purpose, the present invention provides the following technical solutions: an aqueous expansion type fireproof paint is composed of the following components:
30-60 parts of acrylic emulsion, 15-30 parts of modified emulsion, 20-30 parts of intumescent flame retardant, 1-2 parts of wetting dispersant, 0.5-1 part of antifreeze agent, 0.8-1.5 parts of film forming auxiliary agent, 0.1-0.5 part of defoaming agent, 0.1-0.6 part of flash rust inhibitor, 0.2-1 part of thickener and 1-2 parts of polycarbodiimide.
Preferably, the intumescent flame retardant consists of 10-20 parts of ammonium polyphosphate, 8-16 parts of dipentaerythritol and 10-17 parts of melamine.
Preferably, the polymerization degree of the ammonium polyphosphate is more than 1000, and the content of small molecules is less than 0.5wt%.
Preferably, the preparation method of the modified emulsion comprises the following steps:
s1: weighing 40-60g of diphenyl dimethoxy silane, 10-20ml of water and 90-110ml of DMF, and mixing and reacting to obtain a mixed solution;
s2: weighing 20-30g of the dihydroxy terminated polyphosphonate, dissolving in 40-60ml of DMF, and slowly dripping into the mixed solution for continuous reaction;
s3: and adding an emulsifier for high-speed dispersion after the reaction is finished, so as to obtain the modified emulsion.
Preferably, in the preparation method of the modified emulsion, diphenyl dimethoxy silane is heated to remove a part of methanol to obtain polysiloxane, and the reaction formula involved in the polycondensation reaction with the dihydroxy-terminated polyphosphonate is as follows:
preferably, the pH value of the mixture in the step S1 is adjusted to be 1-3 before the mixture is mixed and reacted.
Preferably, the temperature of the mixing reaction in the step S1 is 50-80 ℃ and the time is 3-6h.
Preferably, the temperature of the continuous reaction in the step S2 is 100-140 ℃ and the time is 20-30h.
Preferably, the preparation method of the fireproof paint comprises the following steps:
s1: adding an intumescent flame retardant, a wetting dispersant and a defoaming agent, uniformly dispersing at a high speed, and grinding;
s2: then adding the acrylic emulsion, the modified emulsion, the antifreeze agent, the film forming auxiliary agent and the flash rust inhibitor, uniformly stirring, and adding the thickener to adjust the viscosity of the system;
s3: finally adding polycarbodiimide, stirring and curing for 20-30h to obtain the water-based intumescent fire-retardant coating.
Preferably, the viscosity of the system after the adjustment in the step S2 is 100 KU to 130KU.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the modified emulsion prepared by polycondensation reaction of polysiloxane and dihydroxy end-capped polyphosphonate is dehydrated and carbonized at high temperature, and a compact carbonized layer can be formed on the surface of the material, so that heat transfer is blocked, and the flame retardant effect of the water-based intumescent fire retardant coating is greatly improved; meanwhile, during the polycondensation reaction of polysiloxane and dihydroxy end-capped polyphosphonate, a cross-linked network can be formed between hydroxyl groups and active groups, so that the strength of the coating is increased, and the stability is stronger.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Preparing modified emulsion: 50g of diphenyl dimethoxy silane, 16ml of water and 98ml of DMF are added into a beaker, the pH value of the mixed solution is adjusted to 2.0 by HCL solution, and the beaker is placed into a magnetic stirring water bath kettle at 60 ℃ for reaction for 5 hours and then taken out; 25g of the dihydroxy-terminated polyphosphonate is weighed and dissolved in 45ml of DMF, and the mixture is slowly dripped into the mixture for continuous reaction, the reaction temperature is set to be 110 ℃, and after 26 hours of reaction, a small amount of emulsifier is added for high-speed dispersion, so that the modified emulsion is obtained.
Wherein, diphenyl dimethoxy silane is heated to remove a part of methanol to obtain polysiloxane, and the reaction formula involved in the polycondensation reaction with dihydroxy end-capped polyphosphonate is as follows:
adding 12 parts of ammonium polyphosphate, 10 parts of dipentaerythritol, 14 parts of melamine, 2 parts of wetting dispersant and 0.3 part of defoamer into a paint mixing kettle, transferring into grinding equipment after high-speed dispersion, grinding to the fineness of less than 45 mu M, adding 40 parts of acrylic emulsion, 23 parts of modified emulsion, 0.5 part of antifreeze agent, 1.2 parts of film forming auxiliary agent and 0.3 part of anti-flash rust agent, and uniformly stirring; and adding a thickener to regulate the viscosity of the system to 125KU, finally adding polycarbodiimide, stirring and curing for 26 hours to obtain the water-based intumescent fire retardant coating.
Example 2
Preparing modified emulsion: adding 40g of diphenyl dimethoxy silane, 12ml of water and 90ml of DMF into a beaker, adjusting the pH of the mixed solution to 2.0 by using HCL solution, placing the beaker into a magnetic stirring water bath kettle at 70 ℃ for reaction for 4 hours, and taking out; 28g of the dihydroxy-terminated polyphosphonate is weighed and dissolved in 50ml of DMF, the mixture is slowly dripped into the mixture for continuous reaction, the reaction temperature is set to 120 ℃, and after 24 hours of reaction, a small amount of emulsifier is added for high-speed dispersion, so that the modified emulsion is obtained.
15 parts of ammonium polyphosphate, 12 parts of dipentaerythritol, 12 parts of melamine, 2 parts of wetting dispersant and 0.3 part of defoamer are added into a paint mixing kettle, the paint mixing kettle is transferred into grinding equipment after high-speed dispersion, the grinding equipment is used for grinding until the fineness is less than 45 mu M, and then 50 parts of acrylic emulsion, 18 parts of modified emulsion, 0.5 part of antifreeze agent, 1.2 parts of film forming auxiliary agent and 0.3 part of flash rust inhibitor are added and stirred uniformly; and adding a thickener to regulate the viscosity of the system to 125KU, finally adding polycarbodiimide, stirring and curing for 26 hours to obtain the water-based intumescent fire retardant coating.
Example 3
Preparing modified emulsion: 60g of diphenyl dimethoxy silane, 18ml of water and 105ml of DMF are added into a beaker, the pH value of the mixed solution is adjusted to 2.0 by HCL solution, and the beaker is placed into a magnetic stirring water bath kettle at 80 ℃ for reaction for 6 hours and then taken out; 22g of dihydroxy end-capped polyphosphonate is weighed and dissolved in 40ml of DMF, the mixture is slowly dripped into the mixture for continuous reaction, the reaction temperature is set to be 130 ℃, and after 26 hours of reaction, a small amount of emulsifier is added for high-speed dispersion, so that modified emulsion is obtained.
Adding 18 parts of ammonium polyphosphate, 10 parts of dipentaerythritol, 16 parts of melamine, 2 parts of wetting dispersant and 0.3 part of defoamer into a paint mixing kettle, transferring into grinding equipment after high-speed dispersion, grinding to the fineness of less than 45 mu M, adding 45 parts of acrylic emulsion, 20 parts of modified emulsion, 0.5 part of antifreeze agent, 1.2 parts of film forming auxiliary agent and 0.3 part of anti-flash rust agent, and uniformly stirring; and adding a thickener to regulate the viscosity of the system to 125KU, finally adding polycarbodiimide, stirring and curing for 26 hours to obtain the water-based intumescent fire retardant coating.
Comparative example 1
The difference from example 1 is that no modified emulsion was added;
adding 12 parts of ammonium polyphosphate, 10 parts of dipentaerythritol, 14 parts of melamine, 2 parts of wetting dispersant and 0.3 part of defoamer into a paint mixing kettle, dispersing at high speed, transferring into grinding equipment, grinding to a fineness of less than 45 mu M, adding 40 parts of acrylic emulsion, 0.5 part of antifreeze agent, 1.2 parts of film forming auxiliary agent and 0.3 part of anti-flash rust agent, and uniformly stirring; and adding a thickener to regulate the viscosity of the system to 125KU, finally adding polycarbodiimide, stirring and curing for 26 hours to obtain the water-based intumescent fire retardant coating.
Comparative example 2
The difference from example 1 is that the modified emulsion is prepared without adding dihydroxy-terminated polyphosphonate, and after a part of methanol is removed by heating diphenyl dimethoxy silane to obtain polysiloxane, the polysiloxane is directly emulsified to obtain emulsion;
the preparation method of the emulsion comprises the following steps: 50g of diphenyl dimethoxy silane, 16ml of water and 98ml of DMF are added into a beaker, the pH value of the mixed solution is adjusted to 2.0 by HCL solution, and the beaker is placed into a magnetic stirring water bath kettle at 60 ℃ for reaction for 5 hours and then taken out; adding a small amount of emulsifying agent to disperse at high speed to obtain emulsion.
Adding 12 parts of ammonium polyphosphate, 10 parts of dipentaerythritol, 14 parts of melamine, 2 parts of wetting dispersant and 0.3 part of defoamer into a paint mixing kettle, transferring into grinding equipment after high-speed dispersion, grinding to the fineness of less than 45 mu M, adding 40 parts of acrylic emulsion, 23 parts of emulsion, 0.5 part of antifreeze agent, 1.2 parts of film forming auxiliary agent and 0.3 part of flash rust inhibitor, and uniformly stirring; and adding a thickener to regulate the viscosity of the system to 125KU, finally adding polycarbodiimide, stirring and curing for 26 hours to obtain the water-based intumescent fire retardant coating.
The performance of the aqueous intumescent fire-retardant coatings prepared in examples 1-3 and comparative example 1 was tested with reference to the coating test-related standard (GB 14007-2002), and the performance indexes of the tests are shown in Table 1;
table 1 performance index measured
From the analysis of the results in table 1, it can be seen that: the water-based intumescent fire-retardant coating prepared by the embodiment has good flame retardant and fire-resistant properties, high coating strength, good toughness, good impact resistance, sagging resistance and wet heat resistance, and the heat degradation product of the dihydroxy end-capped polyphosphonate at high temperature is beneficial to rapidly dehydrating and carbonizing the surface of the material, and a compact carbonized layer can be formed on the surface of the material, so that heat transfer is blocked, and the flame retardant effect of the water-based intumescent fire-retardant coating is greatly improved; meanwhile, during polycondensation reaction of polysiloxane and dihydroxy end-capped polyphosphonate, a cross-linking network can be formed between hydroxyl groups and active groups, so that the strength and toughness of the material are improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. The water-based intumescent fire-retardant coating is characterized by comprising the following components:
30-60 parts of acrylic emulsion, 15-30 parts of modified emulsion, 20-30 parts of intumescent flame retardant, 1-2 parts of wetting dispersant, 0.5-1 part of antifreeze agent, 0.8-1.5 parts of film forming auxiliary agent, 0.1-0.5 part of defoaming agent, 0.1-0.6 part of flash rust inhibitor, 0.2-1 part of thickener and 1-2 parts of polycarbodiimide.
2. An aqueous intumescent fire retardant coating as claimed in claim 1, characterized in that the intumescent flame retardant consists of 10-20 parts ammonium polyphosphate, 8-16 parts dipentaerythritol and 10-17 parts melamine.
3. An aqueous intumescent fire retardant coating as claimed in claim 2, characterized in that the degree of polymerization of the ammonium polyphosphate is greater than 1000 and the small molecule content is less than 0.5% by weight.
4. The water-based intumescent fire retardant coating of claim 1, wherein the preparation method of the modified emulsion comprises the following steps:
s1: weighing 40-60g of diphenyl dimethoxy silane, 10-20ml of water and 90-110ml of DMF, and mixing and reacting to obtain a mixed solution;
s2: weighing 20-30g of the dihydroxy terminated polyphosphonate, dissolving in 40-60ml of DMF, and slowly dripping into the mixed solution for continuous reaction;
s3: and adding an emulsifier for high-speed dispersion after the reaction is finished, so as to obtain the modified emulsion.
5. The water-based intumescent fire retardant coating as claimed in claim 4, wherein the pH of the coating is adjusted to 1-3 before the mixing reaction in S1.
6. The water-based intumescent fire retardant coating as claimed in claim 4, wherein the temperature of the mixing reaction in S1 is 50-80 ℃ for 3-6 hours.
7. An aqueous intumescent fire retardant coating as claimed in claim 4, characterized in that the temperature of the continuous reaction in S2 is 100-140 ℃ for 20-30 hours.
8. The water-based intumescent fire retardant coating as claimed in claim 1, wherein the preparation method of the fire retardant coating comprises the following steps:
s1: adding an intumescent flame retardant, a wetting dispersant and a defoaming agent, uniformly dispersing at a high speed, and grinding;
s2: then adding the acrylic emulsion, the modified emulsion, the antifreeze agent, the film forming auxiliary agent and the flash rust inhibitor, uniformly stirring, and adding the thickener to adjust the viscosity of the system;
s3: finally adding polycarbodiimide, stirring and curing for 20-30h to obtain the water-based intumescent fire-retardant coating.
9. The water-based intumescent fire retardant coating of claim 8, wherein the viscosity of the system after adjustment in S2 is 100-130KU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311325118.7A CN117363116A (en) | 2023-10-12 | 2023-10-12 | Water-based intumescent fireproof coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311325118.7A CN117363116A (en) | 2023-10-12 | 2023-10-12 | Water-based intumescent fireproof coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117363116A true CN117363116A (en) | 2024-01-09 |
Family
ID=89407111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311325118.7A Pending CN117363116A (en) | 2023-10-12 | 2023-10-12 | Water-based intumescent fireproof coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117363116A (en) |
-
2023
- 2023-10-12 CN CN202311325118.7A patent/CN117363116A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112961528B (en) | Environment-friendly fireproof coating and preparation method thereof | |
| CN100410286C (en) | Silicone modified polyacrylate and its prepn and application | |
| CN109439083B (en) | Ultrathin intumescent steel structure water-based fireproof coating and preparation method thereof | |
| CN108641551B (en) | High-temperature-resistant fireproof coating and preparation method thereof | |
| CN112029367B (en) | Ultrathin expansion type fireproof coating | |
| CN115058157A (en) | Temperature-humidity-alternating-temperature-resistant water-based fireproof coating and preparation method thereof | |
| CN108912909A (en) | Thin section steel structure fire retardant, anticorrosive coating | |
| CN108948946A (en) | A kind of composite fire retardant coating and preparation method thereof | |
| WO2023050315A1 (en) | Hyperbranched phosphorus-and-silicon-containing aliphatic amine flame-retardant curing agent, and preparation method therefor and use thereof in fireproof coating | |
| CN116120811A (en) | Water-based acrylic resin composite modified aerogel heat-insulating fireproof coating and preparation method thereof | |
| CN109593414B (en) | Expandable foamed single-component polymer emulsion fireproof and waterproof coating and preparation method thereof | |
| CN113354756B (en) | Bio-based halogen-free flame retardant, preparation thereof and halogen-free flame-retardant water-based acrylic coating | |
| CN112210629B (en) | Biological cyclodextrin inclusion ferrocene modified hydrotalcite-like compound/pepper seed oil environment-friendly flame-retardant leather fatting agent and preparation method thereof | |
| CN110922816B (en) | Low-VOC-content water-based expansion steel structure fireproof coating and preparation method thereof | |
| CN117363116A (en) | Water-based intumescent fireproof coating and preparation method thereof | |
| CN112111210A (en) | Flame-retardant water-based paint and preparation method thereof | |
| CN110746804A (en) | Water-based paint for furniture production, preparation method and application thereof, and furniture preparation process | |
| WO2024021366A1 (en) | Fire-resistant coating material | |
| CN117757331B (en) | Special water-based paint and preparation method and application thereof | |
| CN115651440B (en) | Fireproof coating based on melamine formaldehyde resin coated adenosine triphosphate fire retardant | |
| CN108753156B (en) | Nanometer fireproof heat-insulating paint coating and preparation method thereof | |
| CN107400437B (en) | A kind of preparation method of modified phosphor-nitrogen expansion type fireproof coating | |
| CN115781843B (en) | Water-based flame retardant treating agent and preparation method thereof | |
| CN117534976A (en) | Organic-inorganic composite flame retardant, and preparation method and application thereof | |
| CN117050595A (en) | Flame-retardant acrylic emulsion and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |