CN114806344A - Flame-retardant water-based epoxy coating and preparation method and application thereof - Google Patents
Flame-retardant water-based epoxy coating and preparation method and application thereof Download PDFInfo
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- CN114806344A CN114806344A CN202210642224.7A CN202210642224A CN114806344A CN 114806344 A CN114806344 A CN 114806344A CN 202210642224 A CN202210642224 A CN 202210642224A CN 114806344 A CN114806344 A CN 114806344A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 239000003063 flame retardant Substances 0.000 title claims abstract description 71
- 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 title claims abstract description 70
- 229920006334 epoxy coating Polymers 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000004593 Epoxy Substances 0.000 claims abstract description 31
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000000839 emulsion Substances 0.000 claims abstract description 26
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000006184 cosolvent Substances 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 239000002562 thickening agent Substances 0.000 claims abstract description 19
- 239000000080 wetting agent Substances 0.000 claims abstract description 19
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 18
- 239000000440 bentonite Substances 0.000 claims abstract description 18
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003755 preservative agent Substances 0.000 claims abstract description 18
- 230000002335 preservative effect Effects 0.000 claims abstract description 18
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 238000005034 decoration Methods 0.000 claims abstract description 6
- 238000001723 curing Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 25
- 239000003973 paint Substances 0.000 claims description 22
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 17
- 239000003112 inhibitor Substances 0.000 claims description 17
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical group COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 14
- 239000013530 defoamer Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- QWXYZCJEXYQNEI-OSZHWHEXSA-N intermediate I Chemical compound COC(=O)[C@@]1(C=O)[C@H]2CC=[N+](C\C2=C\C)CCc2c1[nH]c1ccccc21 QWXYZCJEXYQNEI-OSZHWHEXSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 12
- 150000003839 salts Chemical class 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 8
- 235000010215 titanium dioxide Nutrition 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 231100000956 nontoxicity Toxicity 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 241000748029 Chamaechaenactis scaposa Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M nitrite group Chemical group N(=O)[O-] IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a flame-retardant water-based epoxy coating which is prepared from a component A and a component B according to the mass ratio of 8-10: 1; the component A comprises the following preparation raw materials in parts by weight: 18-30 parts of water, 0.5-1.5 parts of water-based dispersing agent, 0.3-1.0 part of water-based wetting agent, 0.3-1.5 parts of water-based bentonite, 0.1-0.8 part of water-based defoaming agent, 20-38 parts of flame retardant, 4-12 parts of precipitated barium sulfate, 35-45 parts of epoxy resin emulsion, 3-8 parts of cosolvent, 0.1-0.8 part of preservative and 0.5-3 parts of thickening agent; the component B comprises the following preparation raw materials in parts by weight: 5-10 parts of propylene glycol phenyl ether, 75-90 parts of water-based epoxy curing agent, 6-15 parts of water and 0.3-1.0 part of anti-flash rust agent. The flame-retardant water-based epoxy coating provided by the invention belongs to the technical field of coatings, has good performances such as flame retardance, salt spray corrosion resistance and the like, and can be widely applied to ship anticorrosion decoration construction.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a flame-retardant water-based epoxy coating as well as a preparation method and application thereof.
Background
The epoxy resin coating is one of the most important coatings with the largest application quantity and the widest application range in the world at present. According to different curing forms, the epoxy resin coating is mainly divided into: the self-drying type single-component liquid epoxy coating, the self-drying type double-component liquid epoxy coating, the self-drying type multi-component liquid epoxy coating, the baking type single-component liquid epoxy coating, the baking type double-component liquid epoxy coating, the powder epoxy coating and the radiation curing epoxy coating. According to different coating states, the epoxy resin coating is mainly divided into: solvent-borne epoxy coatings, solventless epoxy coatings and waterborne epoxy coatings. According to different purposes, the epoxy resin coating is mainly divided into: marking paint, anticorrosive paint, heat-resisting paint, fireproof paint, temperature indicating paint, etc.
The water-based epoxy coating is increasingly paid attention to and is more and more widely applied due to the advantages of environmental protection, performance and the like, but the formula of the water-based epoxy coating is relatively complex, the types of the additives are more, and the performance of the coating can be greatly influenced by the various additives. The research and development of the waterborne epoxy resin in China are relatively late, the development of the high-end waterborne epoxy emulsion is still more in the laboratory stage, and the mature product for realizing industrialization is relatively short. The various aqueous epoxy resin emulsions developed by the Limited company of the Zhuhaijili chemical industry achieve large-scale production, but the products are difficult to satisfy when being used in the field of industrial metal corrosion prevention, and the outstanding problems are that the water resistance and the salt mist resistance of a paint film are poor and the most basic corrosion prevention requirements cannot be met.
The ship inner cabin is a semi-closed limited space, volatile solvent is easy to accumulate in the cabin in the oil paint construction process, when a certain amount of oil paint reaches, explosion can occur when the oil paint meets an ignition point, the volatile solvent is not friendly to the health of constructors, the volatile organic solvent VOC is not friendly to the environment, and the cabin inner paint is required to be flame-retardant paint by national or international standards, so that the development of the flame-retardant waterborne epoxy paint with the anticorrosion performance has important significance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention deeply studies the formulation and the influence of the additive performance of the water-based epoxy coating, adopts specific water-based epoxy emulsion and water-based epoxy curing agent as main film forming substances, and provides the water-based epoxy coating with good construction performance, no toxicity, good flame retardance and good salt mist corrosion resistance by experimental optimization and adjustment of compatibility of adding a flame retardant and the like into a system, and the water-based epoxy coating can be widely applied to the anticorrosion decoration construction of metal surfaces of ship cargo holds, engine rooms, living cabins and the like.
The objects of the invention will be further apparent and elucidated by the following detailed description.
The invention provides a flame-retardant water-based epoxy coating which is prepared from a component A and a component B according to the mass ratio of 8-10: 1; the component A comprises the following preparation raw materials in parts by weight: 18-30 parts of water, 0.5-1.5 parts of water-based dispersing agent, 0.3-1.0 part of water-based wetting agent, 0.3-1.5 parts of water-based bentonite, 0.1-0.8 part of water-based defoaming agent, 20-38 parts of flame retardant, 4-12 parts of precipitated barium sulfate, 35-45 parts of epoxy resin emulsion, 3-8 parts of cosolvent, 0.1-0.8 part of preservative and 0.5-3 parts of thickening agent; the component B comprises the following preparation raw materials in parts by weight: 5-10 parts of propylene glycol phenyl ether, 75-90 parts of water-based epoxy curing agent, 6-15 parts of water and 0.3-1.0 part of anti-flash rust agent.
The inventor analyzes the existing water-based epoxy coating and finds that the products often adopt a forced emulsification process of low-molecular epoxy, the process not only needs a large amount of water-soluble curing agent, but also the emulsifier has great influence on the water resistance of the coating film, and finally the products are difficult to be used for metal corrosion prevention. On the basis of the discovery, the invention adopts high molecular weight epoxy resin for modified emulsification, takes 6520 as epoxy resin emulsion, adopts 6870 as aqueous epoxy curing agent (in a dissolved state or a self-emulsifying semi-dissolved state in use), adds hydrophilic design to the aqueous epoxy curing agent, reduces lipophilic alkyl chain in the molecular chain structure, correspondingly replaces the lipophilic alkyl chain by phenolic hydroxyl or phenolic aldehyde amine structure, and designs the hydrophilic and lipophilic structure of the molecular chain to obtain better self-emulsifying performance; meanwhile, antimony trioxide with specific content is matched with titanium dioxide as a flame retardant to be matched with epoxy resin emulsion for use, so that the flame retardant and fire resistant grade is B1 grade, the compatibility is good, and the storage stability of an emulsion system cannot be influenced; if used in a curative system, this can result in thickening, gelling of the curative and affect the curing properties of the curative. The composition of the raw materials and the mass part range are determined by a large number of tests of the inventor, and by adopting the technical scheme, the water-based epoxy coating with good construction performance, no toxicity, flame retardance and salt spray corrosion resistance is developed.
Preferably, the component A comprises the following preparation raw materials in parts by weight: 20-28 parts of water, 0.6-1.2 parts of water-based dispersant, 0.4-0.8 part of water-based wetting agent, 0.5-1.2 parts of water-based bentonite, 0.2-0.5 part of water-based defoamer, 22-35 parts of flame retardant, 6-10 parts of precipitated barium sulfate, 36-42 parts of epoxy resin emulsion, 4-8 parts of cosolvent, 0.2-0.5 part of preservative and 1-2 parts of thickening agent.
Preferably, the component B comprises the following preparation raw materials in parts by weight: 6-8 parts of propylene glycol phenyl ether, 78-85 parts of a waterborne epoxy curing agent, 8-12 parts of water and 0.4-0.8 part of an anti-flash rust agent.
Preferably, the flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: water 20, water dispersant 1, water wetting agent 0.5, water bentonite 0.8, water defoamer 0.3, flame retardant 26, precipitated barium sulfate 7, epoxy resin emulsion 38, cosolvent 5, preservative 0.4, thickener 1; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, water-based epoxy curing agent 83, water 9.5 and anti-flash rust agent 0.5.
Preferably, the epoxy resin emulsion is 6520, the epoxy equivalent is 500-600g/eq, the viscosity is 1000-6000 cp.s, and the solid content is 52% -55%; the flame retardant consists of 10-18 parts of antimony trioxide and 10-18 parts of titanium dioxide R996.
Preferably, the waterborne epoxy curing agent is 6870, the amine value is 235-265mg/g, the viscosity is 5000-11000 cp.s, and the solid content is 51% -54%.
Preferably, the aqueous dispersant is V-D01, the aqueous wetting agent is V-W01, the aqueous bentonite is V-R06, the aqueous defoaming agent is V-F03, the cosolvent is propylene glycol monomethyl ether, the preservative is BEK-500, the thickener is V-R04, and the flash rust inhibitor is nitrite-based liquid flash rust inhibitor FA 179.
Correspondingly, the invention also provides a preparation method of the flame-retardant waterborne epoxy coating, which comprises the steps of respectively preparing the component A and the component B, and mixing to obtain the flame-retardant waterborne epoxy coating;
the preparation of the component A comprises the following steps:
1) adding water with the total amount of 70-85%, adding a water-based dispersing agent and a water-based wetting agent, uniformly stirring by using a dispersing machine, adding water-based bentonite and a water-based defoaming agent, and uniformly stirring to obtain an intermediate I;
2) adding a flame retardant and precipitated barium sulfate into the intermediate I, uniformly stirring by using a dispersion machine, and grinding by using a grinder until the fineness is less than or equal to 30 micrometers to obtain an intermediate II;
3) adding the intermediate II, transferring the intermediate II to a paint mixing machine, adding the epoxy resin emulsion, the cosolvent, the preservative, the thickening agent and the rest water, and uniformly stirring to obtain a component A;
the preparation of the component B comprises the following steps: adding propylene glycol phenyl ether, a water-based epoxy curing agent, water and a flash rust inhibitor, and uniformly stirring by using a dispersion machine to obtain a component B.
Preferably, the stirring speed in the step 1) is 100-300 r/min; the stirring speed in the step 2) is 400-800 r/min; the stirring speed in the step 3) is 300-500 r/min.
In addition, the invention also provides application of the flame-retardant water-based epoxy coating in ship anticorrosion decoration.
Compared with the prior art, the invention has the beneficial effects that: the modified 6520 of the invention is used as epoxy resin emulsion, the 6870 with optimized hydrophilic and oleophilic structure is used as water-based epoxy curing agent, meanwhile, antimony trioxide with specific content is adopted to match with titanium dioxide as fire retardant, the compatibility is good, the water-based epoxy coating with good construction performance, nontoxicity, fire resistance and salt mist corrosion resistance is provided, the water-based epoxy coating has good room temperature curing performance, good storage stability, fire resistance and fire resistance level B1, the VOC content is low, and the water-based epoxy coating can be widely used for the corrosion-resistant decoration construction of metal surfaces of ship cargo holds, engine rooms and living cabins. The flame-retardant water-based epoxy coating prepared by the preparation method provided by the invention has excellent performance and stable quality, and can be widely applied to ship anticorrosion decoration.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
In the present invention, all the raw materials are conventional commercial products, or can be obtained by conventional technical means in the field. For example: epoxy resin emulsion 6520 was purchased from Vast chemical Limited, USA; waterborne epoxy curing agent 6870 was purchased from Vast chemical Limited, USA; aqueous dispersant V-D01 was purchased from Mount Taiger Polymer technology, Inc.; the aqueous wetting agent V-W01 was obtained from the Dragon sea chemical Co., Ltd, Dongguan; thickener V-R04 is available from Haimax (Shanghai) New materials, Inc. In the present invention, the content means a mass percentage content unless otherwise specified.
Example A flame retardant waterborne epoxy coating
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: water 20, water dispersant V-D011, water wetting agent V-W010.5, water bentonite V-R060.8, water defoamer V-F030.3, flame retardant 26, precipitated barium sulfate 7, epoxy resin emulsion 652038, cosolvent 5, preservative BEK-5000.4 and thickener V-R041; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, water-based epoxy curing agent 687083, water 9.5 and flash rust inhibitor 0.5; the flame retardant consists of 14 parts of antimony trioxide and 12 parts of titanium dioxide R996; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
The preparation method of the flame-retardant water-based epoxy coating comprises the following steps: respectively preparing a component A and a component B, and mixing to obtain the flame-retardant water-based epoxy coating;
the preparation of the component A comprises the following steps:
1) adding water with the total amount of 80%, adding an aqueous dispersant and an aqueous wetting agent, uniformly stirring by using a dispersion machine, adding aqueous bentonite and an aqueous defoaming agent, and uniformly stirring to obtain an intermediate I; the stirring speed is 200 r/min;
2) adding a flame retardant and precipitated barium sulfate into the intermediate I, uniformly stirring by using a dispersion machine, and grinding by using a grinder until the fineness is less than or equal to 30 micrometers to obtain an intermediate II; the stirring speed is 600 r/min;
3) adding the intermediate II, transferring the intermediate II to a paint mixing machine, adding the epoxy resin emulsion, the cosolvent, the preservative, the thickening agent and the rest water, and uniformly stirring to obtain a component A; the stirring speed is 400 r/min.
The preparation of the component B comprises the following steps: adding propylene glycol phenyl ether, a water-based epoxy curing agent, water and an anti-flash rust agent, and uniformly stirring by using a dispersion machine at the stirring speed of 200r/min to obtain a component B.
EXAMPLE two flame retardant waterborne epoxy coating
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: 26 parts of water, 26 parts of water-based dispersant V-D011.2 parts of water-based wetting agent V-W010.6 parts of water-based bentonite V-R061.0 parts of water-based antifoaming agent V-F030.4 parts of water-based antifoaming agent, 23 parts of flame retardant, 6 parts of precipitated barium sulfate, 652036 parts of epoxy resin emulsion, 4 parts of cosolvent, BEK-5000.5 parts of preservative and V-R041.3 parts of thickening agent; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 6, water-based epoxy curing agent 687080, water 13.4 and flash rust inhibitor 0.6; the flame retardant consists of 12 parts of antimony trioxide and 11 parts of titanium dioxide R996; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
The preparation method of the flame-retardant water-based epoxy coating is similar to the embodiment.
EXAMPLE three flame retardant waterborne epoxy coatings
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 8: 1; the component A comprises the following preparation raw materials in parts by weight: 26 parts of water, V-D010.8 parts of water-based dispersant, V-W010.8 parts of water-based wetting agent, V-R060.5 parts of water-based bentonite, V-F030.4 parts of water-based antifoaming agent, 23 parts of flame retardant, 6 parts of precipitated barium sulfate, 652037 parts of epoxy resin emulsion, 4 parts of cosolvent, BEK-5000.5 parts of preservative and V-R041 parts of thickener; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 8, waterborne epoxy curing agent 687078, water 13.5 and flash rust inhibitor 0.5; the flame retardant consists of 12 parts of antimony trioxide and 11 parts of titanium white R996; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
The preparation method of the flame-retardant water-based epoxy coating is similar to the embodiment.
Comparative example 1
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: 20 parts of water, V-D011 parts of water-based dispersant, V-W010.5 parts of water-based wetting agent, V-R060.8 parts of water-based bentonite, V-F030.3 parts of water-based defoamer, 26 parts of flame retardant, 7 parts of precipitated barium sulfate, WE 821738 parts of non-ionic water-based bisphenol A epoxy resin, 5 parts of cosolvent, BEK-5000.4 parts of preservative and V-R041 parts of thickener; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, water-based epoxy curing agent 687083, water 9.5 and flash rust inhibitor 0.5; the flame retardant consists of 14 parts of antimony trioxide and 12 parts of titanium dioxide R996; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
Comparative example 1 differs from example one in that: the epoxy resin composition is different.
Comparative example 2
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: water 20, water dispersant V-D011, water wetting agent V-W010.5, water bentonite V-R060.8, water defoamer V-F030.3, flame retardant 26, precipitated barium sulfate 7, epoxy resin emulsion 652038, cosolvent 5, preservative BEK-5000.4 and thickener V-R041; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, non-emulsifying water-based epoxy curing agent MH 627083, water 9.5 and flash rust inhibitor 0.5; the flame retardant consists of 14 parts of antimony trioxide and 12 parts of titanium dioxide R996; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
Comparative example 2 differs from example one in that: the epoxy curing agent is different in composition.
Comparative example 3
The flame-retardant water-based epoxy coating is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: water 20, water dispersant V-D011, water wetting agent V-W010.5, water bentonite V-R060.8, water defoamer V-F030.3, flame retardant 26, precipitated barium sulfate 7, epoxy resin emulsion 652038, cosolvent 5, preservative BEK-5000.4 and thickener V-R041; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, water-based epoxy curing agent 687083, water 9.5 and flash rust inhibitor 0.5; the flame retardant is antimony trioxide; the cosolvent is propylene glycol methyl ether, and the flash rust inhibitor is FA 179.
Comparative example 3 differs from example one in that: the flame retardant is different in composition.
Test example
Relevant criteria involved include: HG/T4759 2014 waterborne epoxy resin anticorrosive paint; GB/T6748-2008 antirust paint for ships; GB/T9262-2008 'cargo space paint for ship'; GB38469-2019 Limit of harmful substances in marine coatings; GB8624-2012 'Classification of Combustion Properties of building materials and products'; international fire resistance test procedure application rules of 2010 annex 1 part 5 surface flammability test (surface material and deck base dressing test).
The related device comprises: the device comprises a digital display high-speed dispersion machine, an oven, an analytical balance, a coating thickness gauge, a solid content rapid measuring instrument, a hydrometer, a paint film impact resistance tester, a rotary viscometer, a pull-off method adhesion tester, air spraying equipment, a salt spray tester and high-temperature combustion equipment.
The flame retardant waterborne epoxy coatings provided in the first to third examples were tested, respectively, and the results are shown in table 1 below.
TABLE 1 test results
| Item | Index (I) |
| In the container state | Is normal and normal |
| Paint film appearance | Is normal |
| Nonvolatile content (%) | ≥45 |
| Drying time (h) | The surface dryness is less than or equal to 4; not more than 24 of full stem |
| Bending Property (mm) | ≤3 |
| Impact resistance (cm) | ≥40 |
| Grid test (grade) | ≤1 |
| Storage stability (50 ℃ C. + -. 2 ℃ C., 14d) | Is normal |
| VOC(g/L) | ≤200 |
| Flash rust inhibitive property | Is normal |
| Water resistance (240h) | No bubbling, no peeling, no rustiness and no cracking |
| Salt spray resistance (500h) | No bubbling, no peeling, no rustiness and no cracking |
| Fire resistance rating, B1(B-Sl, d0) grade | Conform to |
| Abrasion resistance (500g/500r) mg | ≤100 |
The first to third examples have good impact resistance, water resistance, salt spray resistance, wear resistance and other properties, the fire resistance grade reaches B1 grade, and the VOC content is low. Wherein, the first embodiment has the best comprehensive performance, and the VOC content is as low as 85 g/L.
In addition, the flame retardant waterborne epoxy coatings of comparative example 1, comparative example 2 and comparative example 3 were tested under the same conditions, and the results were: the salt fog resistance of comparative example 1 is 300h, the paint film is foamed, rusted and cracked, the fire resistance rating is B1 grade, the fire resistance rating of comparative example 2 is B2 grade, and the fire resistance rating of comparative example 3 is B2 grade. Therefore, the performance of the flame-retardant waterborne epoxy coating provided by the embodiment of the invention is superior to that of comparative examples 1 to 3, and the epoxy resin emulsion, the epoxy curing agent and the flame retardant in the formula play a vital role in the performance of the flame-retardant waterborne epoxy coating.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A flame-retardant water-based epoxy coating is characterized in that: the paint is prepared from a component A and a component B according to a mass ratio of 8-10: 1; the component A comprises the following preparation raw materials in parts by weight: 18-30 parts of water, 0.5-1.5 parts of water-based dispersing agent, 0.3-1.0 part of water-based wetting agent, 0.3-1.5 parts of water-based bentonite, 0.1-0.8 part of water-based defoaming agent, 20-38 parts of flame retardant, 4-12 parts of precipitated barium sulfate, 35-45 parts of epoxy resin emulsion, 3-8 parts of cosolvent, 0.1-0.8 part of preservative and 0.5-3 parts of thickening agent; the component B comprises the following preparation raw materials in parts by weight: 5-10 parts of propylene glycol phenyl ether, 75-90 parts of water-based epoxy curing agent, 6-15 parts of water and 0.3-1.0 part of anti-flash rust agent.
2. The flame retardant waterborne epoxy coating of claim 1, characterized in that: the component A comprises the following preparation raw materials in parts by weight: 20-28 parts of water, 0.6-1.2 parts of water-based dispersant, 0.4-0.8 part of water-based wetting agent, 0.5-1.2 parts of water-based bentonite, 0.2-0.5 part of water-based defoamer, 22-35 parts of flame retardant, 6-10 parts of precipitated barium sulfate, 36-42 parts of epoxy resin emulsion, 4-8 parts of cosolvent, 0.2-0.5 part of preservative and 1-2 parts of thickening agent.
3. The flame retardant waterborne epoxy coating of claim 1, characterized in that: the component B comprises the following preparation raw materials in parts by weight: 6-8 parts of propylene glycol phenyl ether, 78-85 parts of water-based epoxy curing agent, 8-12 parts of water and 0.4-0.8 part of anti-flash rust agent.
4. The flame retardant waterborne epoxy coating according to any of claims 1 to 3, characterized in that: the composition is prepared from a component A and a component B according to the mass ratio of 9: 1; the component A comprises the following preparation raw materials in parts by weight: water 20, water dispersant 1, water wetting agent 0.5, water bentonite 0.8, water defoamer 0.3, flame retardant 26, precipitated barium sulfate 7, epoxy resin emulsion 38, cosolvent 5, preservative 0.4, thickener 1; the component B comprises the following preparation raw materials in parts by weight: propylene glycol phenyl ether 7, water-based epoxy curing agent 83, water 9.5 and anti-flash rust agent 0.5.
5. The flame retardant waterborne epoxy coating according to any of claims 1 to 3, characterized in that: 6520 of the epoxy resin emulsion, 600g/eq of epoxy equivalent, 1000-6000 cp.s of viscosity and 52-55 percent of solid content; the flame retardant consists of 10-18 parts of antimony trioxide and 10-18 parts of titanium dioxide R996.
6. The flame retardant waterborne epoxy coating according to any of claims 1 to 3, characterized in that: the waterborne epoxy curing agent is 6870, the amine value is 235-265mg/g, the viscosity is 5000-11000 cp.s, and the solid content is 51% -54%.
7. The flame retardant waterborne epoxy coating according to any of claims 1 to 3, characterized in that: the water-based dispersing agent is V-D01, the water-based wetting agent is V-W01, the water-based bentonite is V-R06, the water-based antifoaming agent is V-F03, the cosolvent is propylene glycol monomethyl ether, the preservative is BEK-500, the thickening agent is V-R04, and the flash rust inhibitor is FA 179.
8. The method for preparing a flame-retardant aqueous epoxy coating according to any one of claims 1 to 7, characterized in that: respectively preparing a component A and a component B, and mixing to obtain the flame-retardant water-based epoxy coating;
the preparation of the component A comprises the following steps:
1) adding water with the total amount of 70-85%, adding a water-based dispersing agent and a water-based wetting agent, uniformly stirring by using a dispersing machine, adding water-based bentonite and a water-based defoaming agent, and uniformly stirring to obtain an intermediate I;
2) adding a flame retardant and precipitated barium sulfate into the intermediate I, uniformly stirring by using a dispersion machine, and grinding by using a grinder until the fineness is less than or equal to 30 micrometers to obtain an intermediate II;
3) adding the intermediate II, transferring the intermediate II to a paint mixing machine, adding the epoxy resin emulsion, the cosolvent, the preservative, the thickening agent and the rest water, and uniformly stirring to obtain a component A;
the preparation of the component B comprises the following steps: adding propylene glycol phenyl ether, a waterborne epoxy curing agent, water and a flash rust inhibitor, and uniformly stirring by using a dispersion machine to obtain a component B.
9. The method for preparing the flame-retardant waterborne epoxy coating according to claim 8, wherein the method comprises the following steps: the stirring speed in the step 1) is 100-300 r/min; the stirring speed in the step 2) is 400-800 r/min; the stirring speed in the step 3) is 300-500 r/min.
10. Use of the flame retardant waterborne epoxy coating according to any one of claims 1 to 7 in marine anticorrosive decoration.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019425A (en) * | 2019-12-06 | 2020-04-17 | 上海金力泰化工股份有限公司 | Water-based bi-component epoxy paint and preparation method thereof |
| CN113999592A (en) * | 2021-11-29 | 2022-02-01 | 国网山东省电力公司电力科学研究院 | Waterborne epoxy rusty anticorrosive paint, and preparation method and application thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019425A (en) * | 2019-12-06 | 2020-04-17 | 上海金力泰化工股份有限公司 | Water-based bi-component epoxy paint and preparation method thereof |
| CN113999592A (en) * | 2021-11-29 | 2022-02-01 | 国网山东省电力公司电力科学研究院 | Waterborne epoxy rusty anticorrosive paint, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
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| 张泽江等: ""纳米无机阻燃剂的研究进展"", 《化学进展》, vol. 16, no. 4, pages 508 - 515 * |
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