CN109913109A - A kind of water-fast high pressure resistant water paint and preparation method thereof - Google Patents
A kind of water-fast high pressure resistant water paint and preparation method thereof Download PDFInfo
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- CN109913109A CN109913109A CN201910063159.0A CN201910063159A CN109913109A CN 109913109 A CN109913109 A CN 109913109A CN 201910063159 A CN201910063159 A CN 201910063159A CN 109913109 A CN109913109 A CN 109913109A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000003973 paint Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 30
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- 239000003822 epoxy resin Substances 0.000 claims abstract description 21
- 239000012948 isocyanate Substances 0.000 claims abstract description 21
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims abstract description 21
- 239000002562 thickening agent Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 18
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 15
- 239000000080 wetting agent Substances 0.000 claims abstract description 15
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000440 bentonite Substances 0.000 claims abstract description 14
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 14
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- -1 isocyanates ester Chemical class 0.000 claims description 6
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical group COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 125000000118 dimethyl group Polymers [H]C([H])([H])* 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 3
- 241000047703 Nonion Species 0.000 claims description 2
- 230000029936 alkylation Effects 0.000 claims description 2
- 238000005804 alkylation reaction Methods 0.000 claims description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical group CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000002791 soaking Methods 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 15
- 239000002585 base Substances 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- IDQBJILTOGBZCR-UHFFFAOYSA-N 1-butoxypropan-1-ol Chemical group CCCCOC(O)CC IDQBJILTOGBZCR-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical class O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 239000004890 Hydrophobing Agent Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
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- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
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- 239000006260 foam Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
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- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Landscapes
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of water-fast high pressure resistant water paints and preparation method thereof, the water-fast high pressure resistant water paint includes component A and B component, component A includes: epoxy-modified bisphenol A type epoxy resin 50-60%, water-based hydroxyl acrylic acid dispersion 4-6%, first environmentally friendly solvent 3-5%, substrate wetting agents 0.3-0.5%, defoaming agent 0.2-0.4%, bentonite 0.2-0.5%, anti-flash rusting agent 0.5-1%, thickener 1-2%, mill base 15-20%, silica solution 2-3%, hydrophobic auxiliary agent 1-2%, hydrophobic fumed silica 2-3% and deionized water 5-10%；The B component includes: isocyanate curing agent 70-80% and the second environmentally friendly solvent 20-30%.Water-fast high pressure resistant water paint provided by the invention has excellent water resistance and barotolerance, is especially suitable for the immersible pump of long period of soaking in water and uses, practical value with higher.
Description
Technical field
The present invention relates to technical field of coatings, more particularly to a kind of water-fast high pressure resistant water paint and preparation method thereof.
Background technique
Immersible pump is the important equipment of deep-well water lift, and when use, entire unit pulled the plug work, and underground water is extracted
Earth's surface is the important tool that domestic water, mine are speedily carried out rescue work, industry cooling, field irrigation, seawater lift, steamer tune carry, also can be used
In fountain landscape.By coating coating on the surface of submersible pump body and components, the pump housing and its components can be carried out
Protection, prolongs its service life.The country generally uses traditional solvent based coating, organic volatile (VOC) content at present
Height causes serious environmental pollution in production and coating process, endangers the health of the mankind.Compared with traditional solvent type coating,
Water paint replaces organic solvent with a large amount of water, and the volatile quantity of organic solvent is greatly reduced in production and work progress.With
Continuous propulsion of the whole society to low-carbon environment-friendly theory, water paint become paint industry future development an inexorable trend.
But in water due to immersible pump long period of soaking, to be not only subjected to exposing to the weather, salt fog corrodes, but also will be through
It is influenced by long-term hydraulic pressure, therefore the requirement to its coating is extremely stringent, in addition to antiseptic and rustproof, it is also desirable to have excellent water-fast
Property and barotolerance, it is water-fast require at least 30 days, traditional water paint is extremely difficult to require.Therefore, how the property developed
The excellent immersible pump of energy is always the insoluble technical problem in water paint field with water paint.
Summary of the invention
Aiming at the problem that water resistance and barotolerance of water paint in the prior art are extremely difficult to immersible pump coating requirement,
The present invention provides water-fast high pressure resistant water paint of one kind and preparation method thereof.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of water-fast high pressure resistant water paint, including component A and B component, the component A include following mass percent
Raw material components: epoxy-modified bisphenol A type epoxy resin 50%, water-based hydroxyl acrylic acid dispersion 6%, the first environmentally friendly solvent 3%,
Substrate wetting agents 0.3%, defoaming agent 0.3%, bentonite 0.3%, anti-flash rusting agent 1%, thickener 2%, mill base 15-20%, silicon
Colloidal sol 2-3%, hydrophobic auxiliary agent 1-2%, hydrophobic fumed silica 2-3% and deionized water 5-10%；
The B component includes the raw material components of following mass percent: the environmental protection of isocyanate curing agent 70-80% and second
Solvent 20-30%；
The mass ratio of the component A and B component is 3-5:1.
Compared with the existing technology, water-fast high pressure resistant water paint provided by the invention, epoxy-modified bisphenol A type epoxy resin
Introducing assign material excellent chemical-resistant and adhesive force so that containing enough characteristic groups in film forming matter；It is aqueous
The crosslink density of paint film can be improved in the introducing of hydroxyl acrylic aqueous dispersion, so that the compact in paint film of preparation is high, improves material
Water resistance and corrosion resistance；Silica solution can pass through chemical bond or electrostatic interaction and epoxy modified acrylic resin and water-based hydroxyl third
Olefin(e) acid dispersion combines, and forms Organic-inorganic composite lotion, realizes and has complementary advantages；Assist other water resistances, solvent resistance
The good auxiliary agent of energy and filler, so that the paint film comprehensive performance of preparation is good；By make epoxy-modified bisphenol A type epoxy resin and
Water-based hydroxyl acrylic acid dispersion and isocyanate curing agent are crosslinked, and make full use of bicomponent epoxy resin and dual-component polyurethane
The advantages of resin, improves the consistency of paint film, to improve its water resistance, corrosion resistance and durability to greatest extent.
Water-fast high pressure resistant water paint prepared by the present invention takes 80 DEG C of baking 30min that can be completely dried, and drying is fast
Speed, water resistance is up to 2400h, and acid resistance is up to 240h, and alkali resistance is up to 240h, and salt fog resistance is up to 480h, to various differences
Substrate such as cast iron, cold-rolled steel sheet, carbon steel, aluminium alloy, electrophoretic primer etc. has excellent adhesive force, and adhesive force is 0 grade reachable, and
VOC content is low, has broad application prospects and development potentiality.
Preferably, the epoxy-modified bisphenol A type epoxy resin is the solid bisphenol A epoxy resin of epoxy resin modification
Non-ion aqueous dispersion liquid, solid content 50-55%, epoxide equivalent 500-600g/eq, viscosity 1000-6000cP.
It is furthermore preferred that the non-ionic water-base epoxy dispersion that the epoxy-modified bisphenol A type epoxy resin is Hexion
Liquid Epikote 6520-WH-53.
Preferred epoxy-modified bisphenol A type epoxy resin, has good corrosion resistance and water resistance and quick-drying, can
Quickly the advantages of applying again, the overall performance characteristic of coating equilibrium can be assigned, and VOC content is low, hazardous air polluant content compared with
It is low.
Preferably, the water-based hydroxyl acrylic acid dispersion is the Antoke 2402 of ten thousand China's chemistry.
Preferred water-based hydroxyl acrylic acid dispersion hydroxyl value is higher, therefore crosslink density is higher, and the paint film of preparation can be made to cause
Close property is more preferable, assigns the performances such as paint film excellent water resistance and corrosion resistance.
Preferably, first environmentally friendly solvent is propandiol butyl ether.
Preferred solvent volatile quantity is small, has extremely strong dissolving power, and nontoxic low taste has improvement levelling, adjusting paint film dry
The characteristics of dry speed.
Preferably, the substrate wetting agents are polyether-modified dimethyl silicone polymer.
It is furthermore preferred that the substrate wetting agents are BYK-346.
Polyether-modified dimethyl silicone polymer has the advantages that two kinds of substances of ethers and organic silicon, has excellent ground
Wetability, excellent flowing promotion property, high-compatibility, and have and improve scratch resistance capability, shrinkage cavity and pigment loose colour can be prevented.
Preferably, the defoaming agent is organic silicon defoaming agent.
It is furthermore preferred that the defoaming agent is the mixture of the BYK-024 of the TEGO-901W and Bi Ke of Digao, the TEGO-
The mass ratio of 901W and BYK-024 is 1:0.8-1.2.
Preferred two kinds of defoaming agents are used in mixed way, and can obtain lasting defoaming foam inhibition effect, and to paint film appearance and
Even property is free from side effects, and the appearance of the phenomenon influential on paint film appearance such as flake, volcanic crater will not be caused.
Preferably, the bentonite is this BENTONE DE of hamming.
Preferred bentonite can make paint film have better holding one's breath property, elasticity and adhesive force, further mention as binder
The water resistance of high paint film.
Preferably, the thickener is association type polyurethane thickener.
It is furthermore preferred that the thickener be ROHM AND HAAS RM-8W and hamming this Rheolate 299 mixture, institute
The mass ratio for stating RM-8W and Rheolate 299 is 1:0.8-1.2.
Preferred thickener can produce pseudoplastic behavior flowing, can improve the sag resistance of paint film, increase the same of product viscosity
Shi Gaishan storage stability simultaneously reduces sedimentation.
Preferably, second environmentally friendly solvent is propylene glycol methyl ether acetate.
Preferred second environmentally friendly solvent can be such that isocyanate curing agent sufficiently dissolves, and it is solid to be conducive to dissolved isocyanates
Agent is sufficiently mixed with component A, crosslinking rate is improved, so as to shorten drying time.
Preferably, the silica solution is the nano silica hydrosol of surface alkylation processing, solid content 28-
32%, partial size 5-10nm.
It is furthermore preferred that the silica solution is the WV33 in Aksu.
Preferred silica solution and epoxy modified acrylic resin and water-based hydroxyl acrylic acid dispersion act synergistically, and can accelerate
Coating film forming improves coating hardness and reproducibility, and the property such as water resistance, weather-proof, washability, stain resistant for greatly improving coating
Energy.
Preferably, the anti-flash rusting agent is this ED-617F of hamming.
ED-617 is different from traditional anti-flash rusting agent, is the mixture by specially treated, not only has long-acting sudden strain of a muscle erosion suppression
The effect of preparation helps to improve dry paint Corrosion Protection, and the corrosion of later period substrate is inhibited to generate the effect with rust creepage；Also
Have the function to pigments and fillers wetting and dispersing, the additional amount of dispersing agent can be reduced, effectively improve water resistance.
Preferably, the hydrophobic auxiliary agent is the HY74-25 and Germany Silcona Phobe H-1022 of Shanghai Hu Yi trade
Mixture, wherein the mass ratio of the HY74-25 and Silcona Phobe H-1022 be 1:0.8-1.2.
Preferred hydrophobic auxiliary agent contains hydroxy functional group, and the crosslink density between coating composition, two kinds of hydrophobing agents can be improved
Collaboration is remarkably improved the hydrophobicity of surface of the paint film, effectively prevent moisture penetration, reduces the appearance of film cracking and water absorption issue,
The substrate wetting ability that coating also can be improved, reduces the usage amount of wetting agent.
Preferably, the hydrophobic fumed silica is Degussa R974.
R974 be by specific surface area be 200m/g hydrophily fumed silica based on, through dimethyldichlorosilane
The water resistance of paint film can be improved in hydrophobic type gas phase silica that treated, but the addition of fumed silica can make to paint
The gap of film increases, to influence the viscosity and chemical resistance of system, the present invention is by being added preferred thickener, defoaming
Agent, silica solution and bentonite minimize the adverse effect of fumed silica, so that the water resistance of the paint film of preparation
It is greatly improved.
Preferably, the Bayhydur 401-70 that the isocyanates ester curing agent is the HLXV of Japanese Tosoh and Cohan is created,
Wherein, the mass ratio of the HLXV and Bayhydur 401-70 is 6-8:1.
Isocyanate curing agent is good with Miscibility, isocyanate curing agent and water-based hydroxyl polyacrylic acid dispersion and
Epoxy-modified bisphenol A type epoxy resin crosslinking, can be improved the compactness and water resistance of paint film.Preferred curing agent is compatible with system
Property it is good, be easy stirring, be added so that preparation coating have good gloss and compactness.
The present invention also provides the preparation method of water-fast high pressure resistant water paint, the preparation method includes at least following step
It is rapid:
Step a weighs each component according to the design proportion of above-mentioned water-fast high pressure resistant water paint, will be weighed epoxy-modified
Bisphenol A type epoxy resin, water-based hydroxyl acrylic acid dispersion, the first environmentally friendly solvent and deionized water, stir evenly, and it is mixed to obtain first
Close material；
Step b, by weighed defoaming agent, substrate wetting agents, bentonite, anti-flash rusting agent, thickener, hydrophobic auxiliary agent, hydrophobic
Fumed silica and mill base are added in first mixed material, stir evenly, obtain component A；
Weighed isocyanate curing agent and the second environmentally friendly solvent are uniformly mixed, obtain B component by step c；
A, B component are mixed according to design proportion, obtain water-fast high pressure resistant water paint by step e.
Heretofore described mill base can also be commercially available mill base for self-control mill base, as long as can be good with coating system compatibility
, specific color can be selected according to customer demand.
Above-mentioned preparation method is easy to operate, no complicated procedures of forming, at low cost without special equipment, is suitble to industrialization big
The water-fast high pressure resistant water paint of large-scale production, preparation has the performances such as excellent water resistance, high pressure resistant and salt fog resistance, has
Vast market prospect.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The embodiment of the present invention provides a kind of water-fast high pressure resistant water paint, including component A and B component, the component A include
The raw material components of following mass percent: epoxy-modified bisphenol A type epoxy resin 50%, water-based hydroxyl acrylic acid dispersion 6%,
Propandiol butyl ether 3%, substrate wetting agents 0.3%, defoaming agent 0.3%, bentonite 0.3%, anti-flash rusting agent 1%, thickener 2%,
Mill base 20%, silica solution 3%, hydrophobic auxiliary agent 1.1%, hydrophobic fumed silica 3% and deionized water 10%；
The B component includes the raw material components of following mass percent: isocyanate curing agent 70% and propylene glycol monomethyl ether
Acetate 30%；
The mass ratio of the component A and B component is 3:1.
The epoxy-modified bisphenol A type epoxy resin is the Epikote 6520-WH-53 of Hexion；It is described aqueous
Hydroxyl acrylic aqueous dispersion is the A2402 of ten thousand China's chemistry；The substrate wetting agents are BYK-346；The defoaming agent is enlightening
The mass ratio of the mixture of the BYK-024 of high TEGO-901W and Bi Ke, the TEGO-901W and BYK-024 are 1:1；It is described
Bentonite is this BENTONE DE of hamming；The anti-flash rusting agent is this ED-617F of hamming；The thickener is ROHM AND HAAS
RM-8W and hamming this Rheolate 299 mixture, the mass ratio of the RM-8W and Rheolate 299 are 1:1；Institute
State the WV33 that silica solution is Aksu；The hydrophobic auxiliary agent is the HY74-25 and Germany Silcona Phobe of Shanghai Hu Yi trade
The mixture of H-1022, wherein the mass ratio of the HY74-25 and Silcona Phobe H-1022 is 1:1；The hydrophobic gas
Aerosil is Degussa R974；The isocyanates ester curing agent is the HLXV of Japanese Tosoh and the Bayhydur of Cohan wound
401-70, wherein the mass ratio of the HLXV and Bayhydur 401-70 is 7:1.
The preparation step of above-mentioned water-fast high pressure resistant water paint is as follows:
Step a weighs each component according to the design proportion of the water-fast high pressure resistant water paint, will be weighed epoxy-modified
Bisphenol A type epoxy resin is added in stock pot, 5min is stirred with the speed of 500-600r/min, then by weighed water-based hydroxyl
Acrylic acid dispersion, the first environmentally friendly solvent and deionized water are added in stock pot, stir 10min with 600-800r/min, obtain the
One mixed material；
Step b, by weighed defoaming agent, substrate wetting agents, bentonite, anti-flash rusting agent, thickener, hydrophobic auxiliary agent, hydrophobic
Fumed silica and mill base are added in first mixed material, stir 30min with 900-1000r/min, obtain component A；
Weighed isocyanate curing agent and the second environmentally friendly solvent are uniformly mixed, obtain B component by step c；
A, B component are mixed according to design proportion, obtain water-fast high pressure resistant water paint by step d.
Embodiment 2
The embodiment of the present invention provides a kind of water-fast high pressure resistant water paint, including component A and B component, the component A include
The raw material components of following mass percent: epoxy-modified bisphenol A type epoxy resin 55%, water-based hydroxyl acrylic acid dispersion 5%,
Propandiol butyl ether 4%, substrate wetting agents 0.4%, defoaming agent 0.2%, bentonite 0.2%, anti-flash rusting agent 0.5%, thickener
1.7%, mill base 18%, silica solution 3%, hydrophobic auxiliary agent 1.5%, hydrophobic fumed silica 2.5% and deionized water 8%；
The B component includes the raw material components of following mass percent: isocyanate curing agent 75% and propylene glycol monomethyl ether
Acetate 25%；
The mass ratio of the component A and B component is 4:1.
The trade mark of above-mentioned each component is same as Example 1, unlike: the defoaming agent be Digao TEGO-901W and
The mass ratio of the mixture of the BYK-024 of Bi Ke, the TEGO-901W and BYK-024 are 0.8:1；The thickener is sieve door
The RM-8W and hamming of Haas this Rheolate 299 mixture, the mass ratio of the RM-8W and Rheolate 299 is
1.2:1；The hydrophobic auxiliary agent is the mixture of the HY74-25 and Germany Silcona Phobe H-1022 of Shanghai Hu Yi trade,
Wherein, the mass ratio of the HY74-25 and Silcona Phobe H-1022 is 1.2:1；The isocyanates ester curing agent is
The Bayhydur 401-70 of the HLXV of Japanese Tosoh and Cohan wound, wherein the quality of the HLXV and Bayhydur 401-70
Than for 6:1.
The preparation step of above-mentioned water-fast high pressure resistant water paint is same as Example 1, and details are not described herein again.
Embodiment 3
The embodiment of the present invention provides a kind of water-fast high pressure resistant water paint, including component A and B component, the component A include
The raw material components of following mass percent: epoxy-modified bisphenol A type epoxy resin 60%, water-based hydroxyl acrylic acid dispersion 4%,
Propandiol butyl ether 5%, substrate wetting agents 0.5%, defoaming agent 0.4%, bentonite 0.5%, anti-flash rusting agent 0.8%, thickener
1%, mill base 17.8%, silica solution 2%, hydrophobic auxiliary agent 1%, hydrophobic fumed silica 2% and deionized water 5%；
The B component includes the raw material components of following mass percent: isocyanate curing agent 80% and propylene glycol monomethyl ether
Acetate 20%；
The mass ratio of the component A and B component is 5:1.
The trade mark of above-mentioned each component is same as Example 1, unlike: the defoaming agent be Digao TEGO-901W and
The mass ratio of the mixture of the BYK-024 of Bi Ke, the TEGO-901W and BYK-024 are 1.2:1；The thickener is sieve door
The RM-8W and hamming of Haas this Rheolate 299 mixture, the mass ratio of the RM-8W and Rheolate 299 is
0.8:1；The hydrophobic auxiliary agent is the mixture of the HY74-25 and Germany Silcona Phobe H-1022 of Shanghai Hu Yi trade,
Wherein, the mass ratio of the HY74-25 and Silcona Phobe H-1022 is 0.8:1；The isocyanates ester curing agent is
The Bayhydur 401-70 of the HLXV of Japanese Tosoh and Cohan wound, wherein the quality of the HLXV and Bayhydur 401-70
Than for 8:1.
The preparation step of above-mentioned water-fast high pressure resistant water paint is same as Example 1, and details are not described herein again.
Embodiment 4
The embodiment of the present invention provides a kind of water-fast high pressure resistant water paint, including component A and B component, the component A include
The raw material components of following mass percent: epoxy-modified bisphenol A type epoxy resin 58%, water-based hydroxyl acrylic acid dispersion
5.1%, propandiol butyl ether 4.5%, substrate wetting agents 0.5%, defoaming agent 0.4%, bentonite 0.5%, anti-flash rusting agent 1%, increasing
Thick dose 1.5%, mill base 15%, silica solution 2.5%, hydrophobic auxiliary agent 2%, hydrophobic fumed silica 2% and deionized water 7%；
The B component includes the raw material components of following mass percent: isocyanate curing agent 78% and propylene glycol monomethyl ether
Acetate 22%；
The mass ratio of the component A and B component is 4.5:1.
The trade mark of above-mentioned each component is same as Example 1, unlike: the defoaming agent be Digao TEGO-901W and
The mass ratio of the mixture of the BYK-024 of Bi Ke, the TEGO-901W and BYK-024 are 0.9:1；The thickener is sieve door
The RM-8W and hamming of Haas this Rheolate 299 mixture, the mass ratio of the RM-8W and Rheolate 299 is
1.1:1；The hydrophobic auxiliary agent is the mixture of the HY74-25 and Germany Silcona Phobe H-1022 of Shanghai Hu Yi trade,
Wherein, the mass ratio of the HY74-25 and Silcona Phobe H-1022 is 1:1；The isocyanates ester curing agent is day
The Bayhydur 401-70 of the HLXV of this Tosoh and Cohan wound, wherein the mass ratio of the HLXV and Bayhydur 401-70
For 7.5:1.
Mill base used is self-control mill base in embodiment 1-4, and preparation step is as follows:
By the deionized water of 35wt%, the dark green toner of dispersant B YK190,57wt% of 15wt%, it is ground to fineness
< 25 μm prepare to get the mill base, other colors referring to this formula.
The preparation step of above-mentioned water-fast high pressure resistant water paint is same as Example 1, and details are not described herein again.
Water-fast high pressure resistant coating in the above various embodiments is tested for the property, the results are shown in Table 1.
Table 1
Note: high pressure resistant test is to press the water-fast high pressure resistant coating of embodiment 1-4 in the autoclave using water as medium
Power is impregnated 48 hours under conditions of being 80MPa, the phenomenon that blistering, crack and falling off does not occur.
In conclusion water-fast high pressure resistant water paint prepared by the present invention, can directly use on the substrate handled well, it is right
Various different substrate materials such as cast iron, cold-rolled steel sheet, carbon steel, aluminium alloy, electrophoretic primer etc. have excellent adhesive force, have excellent
Water resistance and barotolerance, rate of drying is fast after spraying, and VOC content is low, safety and environmental protection, is especially suitable for long period of soaking in water
Immersible pump use, practical value with higher.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of water-fast high pressure resistant water paint, including component A and B component, which is characterized in that the component A includes following matter
The raw material components of percentage: epoxy-modified bisphenol A type epoxy resin 50-60%, water-based hydroxyl acrylic acid dispersion 4-6% are measured,
First environmentally friendly solvent 3-5%, substrate wetting agents 0.3-0.5%, defoaming agent 0.2-0.4%, bentonite 0.2-0.5%, anti-flash rusting
Agent 0.5-1%, thickener 1-2%, mill base 15-20%, silica solution 2-3%, hydrophobic auxiliary agent 1-2%, hydrophobic fumed silica
2-3% and deionized water 5-10%；
The B component includes the raw material components of following mass percent: isocyanate curing agent 70-80% and the second environmentally friendly solvent
20-30%；
The mass ratio of the component A and B component is 3-5:1.
2. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that the epoxy-modified bisphenol type epoxy
Resin is the non-ion aqueous dispersion liquid of the solid bisphenol A epoxy resin of epoxy resin modification, solid content 50-55%, ring
Oxygen equivalent is 500-600g/eq, viscosity 1000-6000cP.
3. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that first environmentally friendly solvent is propylene glycol
Butyl ether；And/or
The substrate wetting agents are polyether-modified dimethyl silicone polymer；And/or
The defoaming agent is organic silicon defoaming agent.
4. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that the thickener is association type polyurethane
Thickener；And/or
Second environmentally friendly solvent is propylene glycol methyl ether acetate.
5. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that the silica solution is at the alkylation of surface
The nano silica hydrosol of reason, solid content 28-32%, partial size 5-10nm.
6. water-fast high pressure resistant water paint as claimed in claim 3, which is characterized in that the defoaming agent is the TEGO- of Digao
The mass ratio of the mixture of the BYK-024 of 901W and Bi Ke, the TEGO-901W and BYK-024 are 1:0.8-1.2；And/or
The anti-flash rusting agent is this ED-617F of hamming.
7. water-fast high pressure resistant water paint as claimed in claim 4, which is characterized in that the thickener is ROHM AND HAAS
RM-8W and hamming this Rheolate 299 mixture, the mass ratio of the RM-8W and Rheolate 299 are 1:0.8-
1.2。
8. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that the hydrophobic auxiliary agent is Shanghai Hu Yi trade
The mixture of easy HY74-25 and Germany Silcona Phobe H-1022, wherein HY74-25 the and Silcona Phobe
The mass ratio of H-1022 is 1:0.8-1.2.
9. water-fast high pressure resistant water paint as described in claim 1, which is characterized in that the isocyanates ester curing agent is day
The Bayhydur 401-70 of the HLXV of this Tosoh and Cohan wound, wherein the mass ratio of the HLXV and Bayhydur 401-70
For 6-8:1.
10. a kind of preparation method of water-fast high pressure resistant water paint, which is characterized in that at least include the following steps:
Step a weighs each component according to the design proportion of any one of the claim 1-9 water-fast high pressure resistant water paint, will
Weighed epoxy-modified bisphenol A type epoxy resin, water-based hydroxyl acrylic acid dispersion, the first environmentally friendly solvent and deionized water, are stirred
It mixes uniformly, obtains the first mixed material；
Step b, by weighed defoaming agent, substrate wetting agents, bentonite, anti-flash rusting agent, thickener, hydrophobic auxiliary agent, hydrophobic gas phase
Silica and mill base are added in first mixed material, stir evenly, obtain component A；
Weighed isocyanate curing agent and the second environmentally friendly solvent are uniformly mixed, obtain B component by step c；
A, B component are mixed according to design proportion, obtain water-fast high pressure resistant water paint by step d.
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