CN107573810B - Self-repairing waterborne epoxy elastic composite coating material and preparation method thereof - Google Patents
Self-repairing waterborne epoxy elastic composite coating material and preparation method thereof Download PDFInfo
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- CN107573810B CN107573810B CN201710813293.9A CN201710813293A CN107573810B CN 107573810 B CN107573810 B CN 107573810B CN 201710813293 A CN201710813293 A CN 201710813293A CN 107573810 B CN107573810 B CN 107573810B
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 58
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 100
- 239000003094 microcapsule Substances 0.000 claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical class O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000002250 absorbent Substances 0.000 claims abstract description 60
- 230000002745 absorbent Effects 0.000 claims abstract description 60
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 41
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- 239000006185 dispersion Substances 0.000 claims abstract description 38
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 239000003822 epoxy resin Substances 0.000 claims abstract description 22
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 22
- 239000012188 paraffin wax Substances 0.000 claims abstract description 20
- -1 alcohol amine Chemical group 0.000 claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 239000000839 emulsion Substances 0.000 claims description 44
- 229920000642 polymer Polymers 0.000 claims description 36
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 32
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 29
- 239000006210 lotion Substances 0.000 claims description 29
- 230000004224 protection Effects 0.000 claims description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 24
- 229920002635 polyurethane Polymers 0.000 claims description 22
- 239000004814 polyurethane Substances 0.000 claims description 22
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- 239000002562 thickening agent Substances 0.000 claims description 21
- 239000006096 absorbing agent Substances 0.000 claims description 20
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 20
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 16
- 235000010215 titanium dioxide Nutrition 0.000 claims description 16
- 238000010792 warming Methods 0.000 claims description 16
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- 150000003077 polyols Chemical class 0.000 claims description 15
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- 239000003963 antioxidant agent Substances 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
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- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 238000007598 dipping method Methods 0.000 claims description 8
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- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
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- 229920001038 ethylene copolymer Polymers 0.000 claims description 4
- PYBNTRWJKQJDRE-UHFFFAOYSA-L dodecanoate;tin(2+) Chemical compound [Sn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O PYBNTRWJKQJDRE-UHFFFAOYSA-L 0.000 claims description 3
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
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- 238000001179 sorption measurement Methods 0.000 abstract 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 14
- 239000002775 capsule Substances 0.000 description 11
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- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 6
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
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- 238000004132 cross linking Methods 0.000 description 2
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 2
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 2
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Landscapes
- Paints Or Removers (AREA)
Abstract
A self-repairing waterborne epoxy elastic composite coating material and a preparation method thereof belong to the technical field of coatings. And dispersing macroporous adsorption resin and a high water absorbent which adsorb a saturated HMDI prepolymer, a latent curing agent and a catalyst mixture into the paraffin wax melt to prepare macroporous adsorption resin high water absorbent microcapsules, and dispersing the macroporous adsorption resin high water absorbent microcapsules into water to form microcapsule dispersion liquid. Mixing the microcapsule dispersion liquid with water-based epoxy resin, water-based epoxy curing agent and the like, curing and forming a film to form the water-based epoxy elastic composite coating material with the self-repairing function. When the coating layer is scratched or the base material deforms to generate cracks, the high water absorbent in the microcapsules can absorb water in the air to expand, and the HMDI prepolymer and the latent curing agent can react quickly in the presence of moisture or water to generate groups such as alcohol amine and the like to generate a polyurethane urea condensate to repair the cracks cooperatively. The invention can be used in the field of highways such as tunnels, bridges, concrete protective walls, metal guardrails and the like, and has the functions of corrosion resistance, water resistance, attractive appearance, visual fatigue reduction and the like.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of selfreparing water-base epoxy elastic composite coating material and its
Preparation method.
Background technique
Highway in China mileage increased rapidly in recent years, protected to the anti-corrosion and waterproof of highway concrete protecting wall, guardrail wires
It is particularly important.With the increase of highway service life, the erosion by rainwater, salt water, acid mist such as highway protecting wall, guardrail wires
Seriously, although some protecting walls, protective fence are painted with protective coating, wheel run at high speed the stone that has hit hit under meeting
Crack or micropore, the crackle or micropore rainwater, deicing salt salt water, acid mist erosion under, exposed concrete or metal
Part can gradually be corroded it is rotten, reduce intensity.In view of the above problems, the present invention proposes a kind of selfreparing water-base epoxy elastic composite
Coating material, using the high water absorbent containing HMDI performed polymer, latent curing agent and catalyst and macroporous absorbent resin as core material, with stone
Wax is wall material, generates microcapsules through atomization quickly cooling in the cold air lower than 7 DEG C.This microcapsules is dispersed in water-base epoxy and
In the ingredients such as its curing agent, VAE lotion, acrylic acid ester emulsion, auxiliary agent, selfreparing composite coating material is formed, after film-forming
Quick self-repair function with fracture or micropore.Since HMDI performed polymer and its solidfied material have the function of anti-xanthochromia, shape
At the lasting selfreparing coating material bright in luster of color inhibition, it can be applied to the fields such as highway, bridge, tunnel, civil buildings,
Play the role of waterproof, anti-corrosion, increasing colour, prolongs the service life.
Publication No. CN 105885679A disclose " one kind based on microcapsule-type review one's lessons by oneself rehydration super-hydrophobic coat and its
Preparation method ".Mainly by groups such as aqueous film-forming resin, microcapsules, tool photocatalytic activity nanoparticle, hydrophobic nano particles
At.When coating surface is after physically worn or organic pollution, microcapsules meeting under photocatalytic Degradation in coating
Rupture releases silicon fluoride and the impaired surface of self-healing, so that its ultra-hydrophobicity is restored, ensures that coating exists
Persistence when outdoor use.It is more demanding to repairing condition using light-catalyzed reaction type microcapsules, and preparation process is more multiple
It is miscellaneous, it is slower to the reparation speed of slight crack.
Publication No. CN 105038502A discloses a kind of " selfreparing epoxide powder coating and its system containing microcapsules
Preparation Method ".Mainly it is made of micro-crack selfreparing capsule, catalyst, epoxy powder resin matrix etc..The capsule of self-repairing microcapsule
Wall is urea and Lauxite, and capsule-core is dicyclopentadiene.When crackle occurs for coating, microcapsules rupture, two polycyclopentadithio.henes
Alkene can rapidly permeate into crackle, encounter catalyst action and generate polymerization crosslinking, to achieve the purpose that reparation.It is equally to utilize response type
Microcapsules, under the action of catalyst repair crack.The only change on raw material, has no that solve complex process, selfreparing slow
The problem of.
Publication No. CN 105400390A discloses " a kind of selfreparing polyurethane matt varnish ".Mainly by modified rouge
Fat acid resin, nitrocellulose, microcapsules selfreparing particle, delustering agent, auxiliary agent, solvent, curing agent.Microcapsules selfreparing particle
It is a kind of thermoplastic acrylic resin sandwich microballoon.Using acrylic resin come repair crack, after needing equal its sufficiently to dry
Effective coating can just be formed.Its repair time grows up for 24 hours, and preparation process is complicated.
Publication No. CN 104449336A discloses " selfreparing aqueous wooden ware finishing coat ".Mainly changed by self-crosslinking acrylic
Property the composition such as polyurethane resin, pigment, nanometer selfreparing auxiliary agent, Nano silicon dioxide dispersion, coalescing agent, function additive.
The fine crack selfreparing of woodenware surface may be implemented, extend the service life of woodenware, while avoiding manually repairing.Nanometer selfreparing
Auxiliary agent, Nano silicon dioxide dispersion etc. are limited to the reparation of crackle, and the main or hardness by improving paint film reduces crackle
Generation.
Publication No. CN 105536657A discloses " a kind of synthetic method of photic self-repairing microcapsule ".Microcapsules capsule
Using neopelex as surfactant, the core materials of the based compound of acyl function containing cinnamic acid have core material
There is photosensitive property, can crosslink reaction in the case where light is triggered and induced, microcrack is repaired.And cyst material
It is urea/melamine/formaldehyde condensation copolymerization resin, it is environmentally friendly.Crack repairing is carried out using light triggering microcapsules.It is made
Standby complex process is repaired relatively slow high to the condition requirement of reparation simultaneously.
Publication No. CN 106010188A discloses " polyurethane water-proof paint of selfreparing and preparation method thereof ".Mainly
Including polyurethane waterproof material, microencapsulation material.It is tiny because rising-heat contracting-cold and hydrated cementitious generate to building concrete base
Crack has good self-healing to act on, and greatly improves the effectiveness of waterproof material.It is mainly used in cement concrete material, utilization is micro-
Capsule repair crack.
Above-described various self-healing coatings, are mostly repaired using chemical reaction type microcapsules as the renovation agent of coating damage
Multiple speed is slower, does not have quick good protective effect to substrate or price is higher is not suitable in the big face in highway field
Product uses.
Summary of the invention
The drawbacks of in order to make up existing self-healing coatings, problem to be solved by this invention are to provide one kind quickly certainly
Repair water-base epoxy elastic composite coating material and preparation method thereof.
A kind of selfreparing water-base epoxy elastic composite coating material of the present invention, composition and content press mass fraction are as follows:
Component A: 20~25 parts of aqueous epoxy resin emulsion, 7~5 parts of VAE lotion, 8~5 parts of acrylic acid ester emulsion；
B component: 20~25 parts of aqueous epoxy curing agent, 5~3 parts of talcum powder, 20~15 parts of rutile type titanium white, aqueous
0.6~0.3 part of polyurethane thickener, 0.5~0.1 part of defoaming agent, 0.6~0.2 part of levelling agent, ultraviolet absorbing agent 0.4~0.2
Part, 0.4~0.2 part of antioxidant, 17.5~21 parts of industry water；
Component C: 15~22 parts of micro-capsule dispersion liquid；
Wherein the micro-capsule dispersion liquid specific the preparation method is as follows:
The first step, the preparation of HMDI pre-polymer mixture:
(1) it weighs 25 parts of N220 polyoxypropylene polyol to be placed in reactor, under conditions of 120 DEG C, -0.09Mpa
Dehydration 2 hours is added 75 parts of HMDI, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react after being cooled to 50 DEG C
After 3.0 hours, under the vacuum condition of -0.09Mpa deaeration 1 hour to get-NCO group mass content be 23% HMDI it is pre-
Aggressiveness；
(2) then under the protection of dry nitrogen, latent curing agent and tin dilaurate are added in the performed polymer that (1) obtains
Dibutyl tin catalyst is stirred 20 minutes, obtains the HMDI pre-polymer mixture containing latent curing agent and catalyst, dry
It is sealed under nitrogen protection；Wherein the additive amount of the latent curing agent is according to the active hydrogen equivalent weight and HMDI of this kind of latent curing agent
In performed polymer-NCO group mass content specifically determines；Wherein, the additive amount of catalyst is the HMDI pre-polymer mixture
The 0.5% of gross mass.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent, 70 parts of macroporous absorbent resin, in the HMDI of step (2) preparation
Dipping reaches saturation in pre-polymer mixture, then is dispersed in paraffin molten mass, after filtering out extra melt paraffin,
The microcapsules containing HMDI pre-polymer mixture of parafilm wrap are generated in drying cold air lower than 7 DEG C through atomization quickly cooling.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds step 2 and prepare the mixed containing HMDI performed polymer of parafilm wrap
150 parts of microcapsules for closing object are simultaneously uniformly dispersed, be made solid content be 60% it is micro- containing high water absorbent and macroporous absorbent resin
The micro-capsule dispersion liquid component of capsule.
Further preferred embodiment, the aqueous epoxy resin emulsion be epoxide number be 0.21~0.23mol/100g, admittedly contain
The non-ionic water epoxy emulsion that amount is 50%；The aqueous epoxy curing agent is that amine value is 0.22~0.24mol/100g,
The aqueous epoxy curing agent that solid content is 50%；The VAE lotion is commercially available the non-ionic acetic acid second that solid content is 50%
Enester-ethylene copolymer emulsion；It is poly- that the acrylic acid ester emulsion is commercially available the anionic acrylic ester that solid content is 50%
Close object lotion.
Further preferred embodiment, the ultraviolet absorbing agent, aqueous polyurethane thickener, antioxidant, defoaming agent, levelling
Agent is water-soluble compound；
Further preferred embodiment, the HMDI be purity >=99.5% ,-NCO group mass fraction be 31.8~
32.1% 4,4'- dicyclohexyl methyl hydride diisocyanate；The polyoxypropylene polyol is that relative molecular mass is
2000, the polyoxypropylene polyol N220 that degree of functionality is 2；The latent curing agent refer to LCA-3000 type latent curing agent or
ALT-101 latent curing agent.
The high water absorbent is the super absorbent resin of partial size≤40 μm；The macroporous absorbent resin is that granularity is
200 purposes are free of cation exchange groups and have the preparation of macroporous structure.
A method of above-mentioned reparation water-base epoxy elastic composite coating material is prepared, is completed as follows:
The first step, by above-mentioned 20~25 parts of aqueous epoxy resin emulsion, 7~5 parts of VAE lotion, acrylic acid ester emulsion 8~
5 parts composition component As with 20~25 parts of aqueous epoxy curing agent, 5~3 parts of talcum powder, 20~15 parts of rutile type titanium white, water
0.6~0.3 part of polyurethane thickener of property, 0.5~0.1 part of defoaming agent, 0.6~0.2 part of levelling agent, ultraviolet absorbing agent 0.4~
0.2 part, 0.4~0.2 part of antioxidant, the B component of 17.5~21 parts of industry water compositions is uniformly mixed；
Second step, then be uniformly mixed with 15~22 parts of micro-capsule dispersion liquid of component C obtained, it obtains and reviews one's lessons by oneself rehydration
Epoxy elastic composite coating material.
Further preferred embodiment, the aqueous epoxy resin emulsion be epoxide number be 0.21~0.23mol/100g, admittedly contain
The non-ion aqueous epoxy emulsion that amount is 50%；The aqueous epoxy curing agent is that amine value is 0.22~0.24mol/
100g, the aqueous epoxy curing agent that solid content is 50%；The VAE lotion is commercially available the non-ionic vinegar that solid content is 50%
Vinyl acetate-ethylene copolymer emulsion；The acrylic acid ester emulsion is commercially available the anionic acrylic that solid content is 50%
Ester polymer lotion.
Further preferred embodiment, the defoaming agent, aqueous polyurethane thickener, levelling agent, ultraviolet absorbing agent, antioxygen
Agent is water-soluble compound.
Selfreparing water-base epoxy elastic composite coating material, which is made, in the present invention can be used the method use of spraying or brushing, apply
The control of brushing number can be used in film thickness≤200 μm, thickness.
Further preferred embodiment, the ultraviolet absorbing agent are the BYK-3840 or Huizhou fluorescent of Bi Ke company, Germany
Any one in the UV-2 of plastic pigment Co., Ltd；Antioxidant is the KL- of Guangzhou Zhuo Hou Chemical Industry Science Co., Ltd production
1061 or Nanjing Datang chemical industry Co., Ltd production antioxidant 264 in any one；The defoaming agent is
The DC-71 of Air Prod & Chem, the U.S. or Tech-365W of Shanghai Tag Polymer Sciences Ltd or Germany Bi Ke
Any one in the BYK-019 of company；The levelling agent is that the DC-57 of Air Prod & Chem, the U.S. or Germany finish
Any one in the BYK-333 of gram company；The aqueous polyurethane thickener is raw for Nantong City Han Tai Chemical Co., Ltd.
The TEGO that the HT-820 aqueous polyurethane thickener or trade Co., Ltd of three liters, Shunde District of Foshan City of production provide
3030 aqueous polyurethane thickener of ViscoPlus.
Further preferred embodiment, the HMDI be purity >=99.5% ,-NCO group mass fraction be 31.8~
32.1% 4,4'- dicyclohexyl methyl hydride diisocyanate；The polyoxypropylene polyol is that relative molecular mass is
2000, the polyoxypropylene polyol N220 that degree of functionality is 2；The latent curing agent refer to LCA-3000 type latent curing agent or
ALT-101 latent curing agent.
Further preferred embodiment, the high water absorbent are the super absorbent resins of partial size≤40 μm；The macropore is inhaled
Attached resin is commercially available macroporous absorbent resin and is processed into the macroporous absorbent resin micro mist that granularity is 200 mesh certainly.
The present invention adds one using HMDI and polyoxypropylene polyol N220 as Material synthesis HMDI performed polymer, according to calculating
Quantitative latent curing agent and catalyst form HMDI pre-polymer mixture.It, will using high water absorbent and macroporous absorbent resin as core material
They are impregnated in the mixture of HMDI performed polymer, latent curing agent and dibutyltin dilaurate catalyst reaches saturation, then
The high water absorbent and macroporous absorbent resin point of HMDI performed polymer, latent curing agent and dibutyltin dilaurate catalyst will be adsorbed with
It is dispersed in paraffin molten mass, generates paraffin through atomization quickly cooling in the drying cold air lower than 7 DEG C after filtering out extra paraffin
The microcapsules containing HMDI performed polymer, latent curing agent and dibutyltin dilaurate catalyst of package, this microcapsules is dispersed
In water, the micro-capsule dispersion liquid component of the microcapsules containing high water absorbent and macroporous absorbent resin is formed.Finally by microcapsules
Dispersion liquid and the component A based on aqueous epoxy resins, the mixing cured film forming of the B component based on aqueous epoxy curing agent are formed
Water-base epoxy elastic composite coating material with self-repair function.When the coating that the coating material is formed is scratched or by substrate
It expands with heat and contract with cold and cracks or when micropore, the moisture content that the high water absorbent of exposure can adsorb in air first in microcapsules is swollen rapidly
Swollen, first fracture is blocked, then in the HMDI performed polymer in macroporous absorbent resin or high water absorbent-NCO group can be with
The groups such as the latent curing agent hydramine that gas or water generate in case of wet, which react rapidly, generates polyurethane-urea cured film, and dual synergistic effect is total
Coating at crack is connected as one by same repair crack, quickly repairs crack to reach, effectively prevention acid mist, salt water, water
The further erosion of concrete or metal base, reaches waterproof, corrosion-resistant purpose at the fractures such as part.Since HMDI performed polymer is solid
Compound has the function of anti-xanthochromia, can form the lasting self-healing coatings bright in luster of color inhibition, which can
Protective coating as the concrete protections wall such as highway, bridge, tunnel and guardrail wires etc. uses, and plays waterproof, anti-corrosion, beauty
It sees, the effect of durable.
Compared with prior art, advantage and good effect are as follows:
1. a kind of selfreparing water-base epoxy elastic composite coating material prepared by the present invention, coating is scratched or external force is wounded
Crack or micropore after, the microcapsules in coating can rupture immediately, gas or the water meeting in case of wet of the super absorbent resin in microcapsules
Expansion first blocks crack rapidly, in subsequent macroporous absorbent resin and in MHDI performed polymer contained in high water absorbent-
NCO group can meet the alcohol amine groups of water generation under dibutyltin dilaurate catalyst effect with latent curing agent, reaction rapidly
Polyurethane-urea macromolecular chain is generated, water absorbent granule independent at crack, macroporous absorbent resin and fracture coating are connected and to be formed
One Integral net shaped membrane structure reaches good selfreparing purpose, reviews one's lessons by oneself that complex velocity is fast, and repairing effect is good.
2. a kind of selfreparing water-base epoxy elastic composite coating material prepared by the present invention, only the high of exposure is inhaled at scuffing
Repair occurs for the MHDI performed polymer fracture in aqua and macroporous absorbent resin, and the intact part of remaining of coating will not occur
Phenomena such as swelling, bubbling.
3. the presence of latent curing agent and dibutyltin dilaurate catalyst can improve reparation speed, when latent curing agent in case of wet
It can be reacted rapidly when gas or water and generate alcamines active group, in hydramine active group meeting and MHDI performed polymer-NCO group
Reaction rapidly generates ammonia ester bond or urea bond, reaction speed be faster than in MHDI performed polymer-reaction speed of NCO group and water, from
And CO is generated when avoiding MHDI performed polymer and water reaction2The phenomenon that, CO2Presence can make occur a small amount of gas at the crack repaired
Bubble makes the reduction of repair layer density.
4. a kind of selfreparing water-base epoxy elastic composite coating material prepared by the present invention is colourless after molding or can foundation
Need to add the coating material that different mill bases form different colours, since MHDI performed polymer solidfied material has the function of anti-xanthochromia,
With other base-materials it is mixing cured after can form lasting self-healing coatings bright in luster, can be used for highway concrete porotective wall,
Bridge revetment, Super Long Tunnel colour Landscape Region, metal protection Lan Deng highway field or residential construction area, play durable water resistant,
Anti-corrosion, increasing colour reduce visual fatigue effect.
5. a kind of selfreparing water-base epoxy elastic composite coating material prepared by the present invention, using water as diluent, to environment
Close friend belongs to green product to operator's fanout free region.
Specific embodiment
It makes an explanation below to a specific embodiment of the invention.
Embodiment 1
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 20 parts of aqueous epoxy resin emulsion, 7 parts of VAE lotion, 8 parts of acrylic acid ester emulsion；
B component: 20 parts of aqueous epoxy curing agent, 5 parts of talcum powder, 20 parts of rutile type titanium white, TEGO ViscoPlus
3030 0.6 part of aqueous polyurethane thickeners, 0.5 part of BYK-019 defoaming agent, 0.6 part of DC-57 levelling agent, BYK-3840 ultraviolet light
0.4 part, 0.4 part antioxidant 264 of absorbent, 17.5 parts of industry water；
Component C: 15 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa HMDI pre-polymerization
Body.
Then under the protection of dry nitrogen, 60.2 parts of LCA-3000 latent curing agents and 0.81 part are added in above-mentioned performed polymer
Dibutyltin dilaurate catalyst is stirred 20 minutes, obtains containing LCA-3000 latent curing agent and T-12 tin dilaurate
The HMDI pre-polymer mixture of dibutyl tin catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high hydroscopic resin of partial size≤40 μm, the macroporous absorbent resin 70 of 200 mesh
Part, dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters
Contain HMDI pre-polymerization through atomization quickly cooling generation parafilm wrap in the drying cold air lower than 7 DEG C after falling extra melt paraffin
The microcapsules of body mixture.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
150 parts of capsule, after being uniformly dispersed, the micro- glue for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Capsule dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 20 parts of aqueous epoxy resin emulsion, 7 parts of VAE lotion, 8 parts of acrylic acid ester emulsion be mixed evenly A be made
Component；
Weigh 20 parts of aqueous epoxy curing agent, 5 parts of talcum powder, 20 parts of rutile type titanium white, HT-820 aqueous polyurethane
0.6 part of thickener, 0.5 part of BYK-019 defoaming agent, 0.6 part of DC-57 levelling agent, 0.4 part of BYK-3840 ultraviolet absorbing agent, 0.4
Part antioxidant 264,17.5 parts of industry water be mixed evenly B component be made；
Component C is 15 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Embodiment 2
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 25 parts of aqueous epoxy resin emulsion, 5 parts of VAE lotion, 5 parts of acrylic acid ester emulsion；
B component: 25 parts of aqueous epoxy curing agent, 3 parts of talcum powder, 15 parts of rutile type titanium white, the aqueous poly- ammonia of HT-820
0.3 part of ester thickener, 0.1 part of Tech-365W defoaming agent, 0.2 part of BYK-333 levelling agent, 0.2 part of UV-2 ultraviolet absorbing agent,
0.2 part of KL-1061 antioxidant, 21 parts of industry water；
Component C: 22 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa HMDI pre-polymerization
Body.
Then under the protection of dry nitrogen, 65.7 parts of LCA-3000 latent curing agents and 0.83 2 are added in above-mentioned performed polymer
Dibutyl tin laurate catalyst is stirred 20 minutes, obtains containing LCA-3000 latent curing agent and di lauric dibutyl
The HMDI pre-polymer mixture of tin catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent of partial size≤40 μm, 70 parts of the macroporous absorbent resin of 200 mesh,
Dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters out
Contain HMDI performed polymer through atomization quickly cooling generation parafilm wrap in the drying cold air lower than 7 DEG C after extra melt paraffin
The microcapsules of mixture.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
It 150 parts of capsule, is uniformly dispersed, the microcapsules for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 25 parts of aqueous epoxy resin emulsion, 5 parts of VAE lotion, 5 parts of acrylic acid ester emulsion be mixed evenly A be made
Component；
Weigh 25 parts of aqueous epoxy curing agent, 3 parts of talcum powder, 15 parts of rutile type titanium white, aqueous polyurethane thickener
0.3 part, 0.1 part of Tech-365W defoaming agent, 0.2 part of BYK-333 levelling agent, 0.2 part of UV-2 ultraviolet absorbing agent, KL-1061 it is anti-
0.2 part of oxygen agent, 21 parts of industry water be mixed evenly B component be made；
Component C is 22 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Embodiment 3
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 21 parts of aqueous epoxy resin emulsion, 7 parts of VAE lotion, 7 parts of acrylic acid ester emulsion；
B component: 21 parts of aqueous epoxy curing agent, 4.5 parts of talcum powder, 19 parts of rutile type titanium white, TEGO
0.6 part of ViscoPlus3030 aqueous polyurethane thickener, 0.5 part of DC-71 defoaming agent, 0.6 part of DC-57 levelling agent, BYK-3840
0.4 part, 0.4 part DBPC 2,6 ditertiary butyl p cresol antioxidant of ultraviolet absorbing agent, 18 parts of industry water；
Component C: 17 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa HMDI pre-polymerization
Body.
Then under the protection of dry nitrogen, 78.2 parts of ALT-101 latent curing agents and 0.90 2 are added in above-mentioned performed polymer
Dibutyl tin laurate catalyst is stirred 20 minutes, obtains containing ALT-101 latent curing agent and dibutyl tin dilaurate
The HMDI pre-polymer mixture of catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent of partial size≤40 μm, 70 parts of the macroporous absorbent resin of 200 mesh,
Dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters out
Contain HMDI performed polymer through atomization quickly cooling generation parafilm wrap in the drying cold air lower than 7 DEG C after extra melt paraffin
The microcapsules of mixture.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
It 150 parts of capsule, is uniformly dispersed, the microcapsules for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 21 parts of aqueous epoxy resin emulsion, 7 parts of VAE lotion, 7 parts of acrylic acid ester emulsion be mixed evenly A be made
Component；
Weigh 21 parts of aqueous epoxy curing agent, 4.5 parts of talcum powder, 19 parts of rutile type titanium white, aqueous polyurethane thickening
0.4 part, 0.4 part 0.6 part of agent, 0.5 part of DC-71 defoaming agent, 0.6 part of DC-57 levelling agent, BYK-3840 ultraviolet absorbing agent antioxygen
Agent 264,18 parts of industry water be mixed evenly B component be made；
Component C is 17 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Embodiment 4
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 22 parts of aqueous epoxy resin emulsion, 6.5 parts of VAE lotion, 6.5 parts of acrylic acid ester emulsion；
B component: 22 parts of aqueous epoxy curing agent, 4.5 parts of talcum powder, 18 parts of rutile type titanium white, HT-820 are aqueous poly-
0.5 part of urethane thickener, 0.4 part of BYK-019 defoaming agent, 0.5 part of BYK-333 levelling agent, 0.3 part of UV-2 ultraviolet absorbing agent,
0.3 part of KL-1061 antioxidant, 18.5 parts of industry water；
Component C: 18 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa HMDI pre-polymerization
Body.
Then under the protection of dry nitrogen, 78.2 parts of LCA-3000 latent curing agents and 0.90 2 are added in above-mentioned performed polymer
Dibutyl tin laurate catalyst is stirred 20 minutes, obtains containing LCA-3000 latent curing agent and di lauric dibutyl
The HMDI pre-polymer mixture of tin catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent of partial size≤40 μm, 70 parts of the macroporous absorbent resin of 200 mesh,
Dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters out
Contain HMDI performed polymer through atomization quickly cooling generation parafilm wrap in the drying cold air lower than 7 DEG C after extra melt paraffin
The microcapsules of mixture.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
It 150 parts of capsule, is uniformly dispersed, the microcapsules for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 22 parts of aqueous epoxy resin emulsion, 6.5 parts of VAE lotion, 6.5 parts of acrylic acid ester emulsion system is mixed evenly
At component A；
Weigh 22 parts of aqueous epoxy curing agent, 4.5 parts of talcum powder, 18 parts of rutile type titanium white, aqueous polyurethane thickening
0.5 part of agent, 0.4 part of BYK-019 defoaming agent, 0.5 part of BYK-333 levelling agent, 0.3 part of UV-2 ultraviolet absorbing agent, KL-1061 are anti-
0.3 part of oxygen agent, 18.5 parts of industry water be mixed evenly B component be made；
Component C is 18 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Embodiment 5
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 23 parts of aqueous epoxy resin emulsion, 6 parts of VAE lotion, 6 parts of acrylic acid ester emulsion；
B component: 23 parts of aqueous epoxy curing agent, 4 parts of talcum powder, 17 parts of rutile type titanium white, TEGO ViscoPlus
3030 0.5 part of aqueous polyurethane thickeners, 0.3 part of Tech-365W defoaming agent, 0.4 part of DC-57 levelling agent, BYK-3840 are ultraviolet
0.3 part, 0.3 part antioxidant 264 of light absorbers, 19.2 parts of industry water；
Component C: 19 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa HMDI pre-polymerization
Body.
Then under the protection of dry nitrogen, 57.5 parts of LCA-3000 latent curing agents and 0.79 2 are added in above-mentioned performed polymer
Dibutyl tin laurate catalyst is stirred 20 minutes, obtains containing LCA-3000 latent curing agent and di lauric dibutyl
The HMDI pre-polymer mixture of tin catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent of partial size≤40 μm, 70 parts of the macroporous absorbent resin of 200 mesh,
Dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters out
Contain HMDI performed polymer through atomization quickly cooling generation parafilm wrap in the drying cold air lower than 7 DEG C after extra melt paraffin
The microcapsules of mixture.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
It 150 parts of capsule, is uniformly dispersed, the microcapsules for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 23 parts of aqueous epoxy resin emulsion, 6 parts of VAE lotion, 6 parts of acrylic acid ester emulsion be mixed evenly A be made
Component；
Weigh 23 parts of aqueous epoxy curing agent, 4 parts of talcum powder, 17 parts of rutile type titanium white, aqueous polyurethane thickener
0.5 part, 0.3 part of Tech-365W defoaming agent, 0.4 part of DC-57 levelling agent, 0.3 part of BYK-3840 ultraviolet absorbing agent, 0.3 part it is anti-
Oxygen agent 264,19.2 parts of industry water be mixed evenly B component be made；
Component C is 19 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Embodiment 6
A kind of selfreparing water-base epoxy elastic composite coating material, the raw material including following mass fraction described in the present embodiment
Composition:
Component A: 24 parts of aqueous epoxy resin emulsion, 5.5 parts of VAE lotion, 5.5 parts of acrylic acid ester emulsion；
B component: 24 parts of aqueous epoxy curing agent, 3 parts of talcum powder, 16 parts of rutile type titanium white, the aqueous poly- ammonia of HT-820
0.4 part of ester thickener, 0.2 part of DC-71 defoaming agent, 0.3 part of DC-51 levelling agent, 0.2 part of UV-2 ultraviolet absorbing agent, 0.2 part it is anti-
20.7 parts of oxygen agent 264, industry water；
Component C: 20 parts of micro-capsule dispersion liquid.
The wherein preparation method of the micro-capsule dispersion liquid is completed according to the following steps:
The first step, the preparation of HMDI performed polymer:
It weighs 25 parts of polyoxypropylene polyol N220 to be placed in reactor, be dehydrated under conditions of 120 DEG C, -0.09Mpa
2 hours, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, be then warming up at 80 DEG C and react 3.0
After hour, deaeration 1 hour is 23% to get-NCO mass content under the vacuum condition of -0.09Mpa HMDI performed polymer.
Then under the protection of dry nitrogen, 78.2 parts of ALT-101 latent curing agents and 0.90 2 are added in above-mentioned performed polymer
Dibutyl tin laurate catalyst is stirred 20 minutes, obtains containing ALT-101 latent curing agent and dibutyl tin dilaurate
The HMDI pre-polymer mixture of catalyst is sealed under drying nitrogen protection.
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent of partial size≤40 μm, 70 parts of the macroporous absorbent resin of 200 mesh,
Dipping reaches saturation in the HMDI pre-polymer mixture of second step preparation, then is dispersed in paraffin molten mass, filters out
Mixing containing HMDI performed polymer for parafilm wrap is generated through atomization quickly cooling in the cold air lower than 7 DEG C after extra melt paraffin
The microcapsules of object.
Third step, the preparation of micro-capsule dispersion liquid:
It weighs 100 parts of water to be placed in dispersing apparatus, adds micro- glue containing HMDI pre-polymer mixture of parafilm wrap
It 150 parts of capsule, is uniformly dispersed, the microcapsules for the microcapsules containing high water absorbent and macroporous absorbent resin that solid content is 60% is made
Dispersed liquid component.
A kind of preparation method of selfreparing water-base epoxy elastic composite coating material, complete as follows described in the present embodiment
At:
Weigh 24 parts of aqueous epoxy resin emulsion, 5.5 parts of VAE lotion, 5.5 parts of acrylic acid ester emulsion system is mixed evenly
At component A；
Weigh 24 parts of aqueous epoxy curing agent, 3 parts of talcum powder, 16 parts of rutile type titanium white, aqueous polyurethane thickener
0.4 part, 0.2 part of DC-71 defoaming agent, 0.3 part of DC-51 levelling agent, 0.2 part, 0.2 part antioxidant 264 of UV-2 ultraviolet absorbing agent,
20.7 parts of industry water are mixed evenly B component are made；
Component C is 20 parts of micro-capsule dispersion liquid.
Tri- components of above-mentioned A, B, C are thoroughly mixed and obtain selfreparing water-base epoxy elastic composite coating material,
It can be sprayed or be brushed in the surface of protected object, coating layer thickness≤200 μm, the control of brushing number can be used in thickness.
Selfreparing water-base epoxy elastic composite applies coating material referring to " JGT 335-2011 concrete structure protection film forming
Type coating ", " GB/T 1720-1979 paint film adhesion measuring method ", " GB/T 1731-1993 paint film flexibility measuring method ",
The standard testings such as " GB/T1732-1993 paint film impact resistance measuring method ", " GB/T 1733-1993 paint film water resistance measuring method " its
Properties are as shown in table 1:
1. selfreparing water-base epoxy elastic composite coating material coating performance index of table
Claims (8)
1. a kind of selfreparing water-base epoxy elastic composite coating material, characterized in that it is formed and content presses mass fraction are as follows:
Component A: 20~25 parts of aqueous epoxy resin emulsion, 7~5 parts of VAE lotion, 8~5 parts of acrylic acid ester emulsion；
B component: 20~25 parts of aqueous epoxy curing agent, 5~3 parts of talcum powder, 20~15 parts of rutile type titanium white, aqueous poly- ammonia
0.6~0.3 part of ester thickener, 0.5~0.1 part of defoaming agent, 0.6~0.2 part of levelling agent, 0.4~0.2 part of ultraviolet absorbing agent,
0.4~0.2 part of antioxidant, 17.5~21 parts of industry water；
Component C: 15~22 parts of micro-capsule dispersion liquid；
Wherein the micro-capsule dispersion liquid specific the preparation method is as follows:
The first step, the preparation of HMDI pre-polymer mixture:
(1) 25 parts of N220 polyoxypropylene polyol are weighed to be placed in reactor, is dehydrated 2 under conditions of 120 DEG C, -0.09Mpa
Hour, 75 parts of HMDI are added after being cooled to 50 DEG C, is warming up at 60 DEG C and reacts 1 hour, it is small to be then warming up to reaction 3.0 at 80 DEG C
Shi Hou, the HMDI performed polymer that deaeration 1 hour is 23% to get-NCO group mass content under the vacuum condition of -0.09Mpa；
(2) then under the protection of dry nitrogen, latent curing agent and two fourth of tin dilaurate are added in the performed polymer that (1) obtains
Base tin catalyst is stirred 20 minutes, obtains the HMDI pre-polymer mixture containing latent curing agent and catalyst, drying nitrogen
It is sealed under protection；Wherein active hydrogen equivalent weight and HMDI pre-polymerization of the additive amount of the latent curing agent according to this kind of latent curing agent
In body-NCO group mass content specifically determines；Wherein, the additive amount of catalyst is the total matter of HMDI pre-polymer mixture
The 0.5% of amount；
Second step, the preparation of microcapsules:
Under the protection of dry nitrogen, by 30 parts of high water absorbent, 70 parts of macroporous absorbent resin, in the HMDI pre-polymerization of step (2) preparation
Dipping reaches saturation in body mixture, then is dispersed in paraffin molten mass, after filtering out extra melt paraffin, is being lower than
The microcapsules containing HMDI pre-polymer mixture of parafilm wrap are generated in 7 DEG C of drying cold air through atomization quickly cooling；
Third step, the preparation of micro-capsule dispersion liquid:
100 parts of water are weighed to be placed in dispersing apparatus, add step 2 prepare parafilm wrap containing HMDI pre-polymer mixture
150 parts of microcapsules and be uniformly dispersed, be made solid content be 60% the microcapsules containing high water absorbent and macroporous absorbent resin
Micro-capsule dispersion liquid component；The high water absorbent is the super absorbent resin of partial size≤40 μm.
2. a kind of selfreparing water-base epoxy elastic composite coating material according to claim 1, it is characterized in that: described aqueous
Epoxy resin latex is that epoxide number is 0.21~0.23mol/100g, the non-ionic water epoxy emulsion that solid content is 50%；Institute
The aqueous epoxy curing agent stated is that amine value is 0.22~0.24mol/100g, the aqueous epoxy curing agent that solid content is 50%；Institute
It states VAE lotion and is commercially available the non-ionic vinyl acetate-ethylene copolymer lotion that solid content is 50%；The acrylate
Lotion is commercially available the anionic acrylic ester polymer lotion that solid content is 50%.
3. a kind of selfreparing water-base epoxy elastic composite coating material according to claim 1, it is characterized in that: the purple
Ultraviolet absorbers, aqueous polyurethane thickener, antioxidant, defoaming agent, levelling agent are water-soluble compound.
4. a kind of selfreparing water-base epoxy elastic composite coating material according to claim 1, it is characterized in that: described
HMDI is purity >=99.5%, the 4,4'- dicyclohexyl methyl hydride diisocyanate that-NCO group mass fraction is 31.8~32.1%
Ester；The polyoxypropylene polyol is that relative molecular mass is 2000, the polyoxypropylene polyol that degree of functionality is 2
N220；The latent curing agent refers to LCA-3000 type latent curing agent or ALT-101 latent curing agent.
5. a kind of selfreparing water-base epoxy elastic composite coating material according to claim 1, it is characterized in that: described is big
Macroporous adsorbent resin is that granularity is that 200 purposes are free of cation exchange groups and have the preparation of macroporous structure.
6. a kind of method for preparing selfreparing water-base epoxy elastic composite coating material described in any one of claim 1 to 5,
It is characterized in completing as follows:
The first step, by above-mentioned 20~25 parts of aqueous epoxy resin emulsion, 7~5 parts of VAE lotion, 8~5 parts of acrylic acid ester emulsion
The component A of composition with 20~25 parts of aqueous epoxy curing agent, 5~3 parts of talcum powder, it is 20~15 parts of rutile type titanium white, aqueous
0.6~0.3 part of polyurethane thickener, 0.5~0.1 part of defoaming agent, 0.6~0.2 part of levelling agent, ultraviolet absorbing agent 0.4~0.2
Part, 0.4~0.2 part of antioxidant, the B component of 17.5~21 parts of industry water compositions is uniformly mixed；
Second step, then be uniformly mixed with 15~22 parts of micro-capsule dispersion liquid of component C obtained, obtain selfreparing water-base epoxy
Elastic composite coating material.
7. the method for a kind of selfreparing water-base epoxy elastic composite coating material according to claim 6, it is characterized in that: institute
Stating aqueous epoxy resin emulsion is epoxide number for 0.21~0.23mol/100g, the non-ion aqueous epoxy that solid content is 50%
Lotion；The aqueous epoxy curing agent is that amine value is 0.22~0.24mol/100g, and the water-base epoxy that solid content is 50% is solid
Agent；The VAE lotion is commercially available the non-ionic vinyl acetate-ethylene copolymer lotion that solid content is 50%；It is described
Acrylic acid ester emulsion is commercially available the anionic acrylic ester polymer lotion that solid content is 50%.
8. the method for a kind of selfreparing water-base epoxy elastic composite coating material according to claim 6, it is characterized in that: institute
Defoaming agent, aqueous polyurethane thickener, levelling agent, ultraviolet absorbing agent, the antioxidant stated are water-soluble compound.
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| CN110343459A (en) * | 2019-06-12 | 2019-10-18 | 苏州科技大学 | A kind of selfreparing polyurethane water-proof paint, preparation method and application |
| CN110564257B (en) * | 2019-09-27 | 2021-08-31 | 孙民权 | Durable self-repairing building coating and preparation method thereof |
| CN111100568A (en) * | 2019-12-24 | 2020-05-05 | 深圳昌茂粘胶新材料有限公司 | Polyurethane rubber film with high weather resistance and preparation method thereof |
| JP2023519071A (en) * | 2020-01-03 | 2023-05-10 | オートノミック マテリアルズ、インコーポレイテッド | One-component water-based self-healing epoxy formulation |
| US11613668B2 (en) | 2020-01-03 | 2023-03-28 | Autonomic Materials, Inc. | One-component waterborne self-healing epoxy formulation |
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| CN113388227B (en) * | 2021-06-21 | 2023-08-04 | 高速铁路建造技术国家工程实验室 | Water-based epoxy resin and preparation method thereof |
| CN113861908A (en) * | 2021-10-12 | 2021-12-31 | 山西凝固力新型材料股份有限公司 | Epoxy resin crack pouring adhesive for repairing cement concrete cracks and preparation method thereof |
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