CN109627944A - A kind of abrasion-resistance water coating and preparation method thereof - Google Patents
A kind of abrasion-resistance water coating and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The present invention discloses a kind of abrasion-resistance water coating and preparation method thereof, including component A and B component, the component A includes following materials by weight: hydroxy acrylic acid secondary breakup body resin 50-70%, antiwear assistant 2-10%, dispersing agent 0.2-1%, wetting agent 0.1-0.6%, defoaming agent 0.1-0.5%, pigment 10-25%, levelling agent 0.1-0.5%, thickener 0.3-1.0% and deionized water 5-15%；The B component is water-based isocyanate curing agent；Wherein, the antiwear assistant is the modified Nano SiC or modified Nano CaCO modified through titanate coupling agent surface3Middle one or two.Coating provided by the invention has excellent wearability, and abrasion resistance, water resistance, acid-proof alkaline are excellent, and VOC content is low, safety and environmental protection, practical value with higher.
Description
Technical field
The present invention relates to technical field of coatings more particularly to a kind of abrasion-resistance water coating and preparation method thereof.
Background technique
Coating belongs to fine chemical product as a kind of material, and this material can be coated in different construction technologies
Object surface, formation adherency is secured, has some strength and continuous solid film, and wear-resistant paint is a kind of with specific function
New function coating, there is preferable wear resistance, such as wear-resistant coating is plated on glass and eyeglass, glass and eyeglass are not
There can be scratch again, wear-resisting functions coating is the core in new coating field, is played to the development of modern coatings industry and technology
Important promotion and supporting role.In the research field of global modern coatings industry and technology, wear-resisting functions coating accounts for 25-
35%, it has also become the emphasis of countries in the world new coating area research development and the industry of countries in the world modern coatings and technology
The hot spot of Strategic Competition in development.
Environmental Protective Water-paint is more and more currently on the market, and application range is also increasingly wider, but with solvent based coating phase
Than the generally existing hardness of water paint is low, the problem of wearing no resistance, to limit a wide range of popularization of water paint.Especially
It is double-component polyurethane water-based paint, the requirement of solvent based coating is much not achieved in hardness and wearability.Therefore, it prepares a kind of resistance to
Mill is had excellent performance, long service life, and coating at low cost has a very important significance.
Summary of the invention
Low for water paint hardness in the prior art, the problem of wear-resisting property difference, the present invention provides a kind of abrasion-resistance water
Coating and preparation method thereof.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of abrasion-resistance water coating, including component A and B component, the component A include the raw material group of following weight percent
Point: hydroxy acrylic acid secondary breakup body resin 50-70%, antiwear assistant 2-10%, dispersing agent 0.2-1%, wetting agent 0.1-
0.6%, defoaming agent 0.1-0.5%, pigment 10-25%, levelling agent 0.1-0.5%, thickener 0.3-1.0% and deionized water 5-
15%；
The B component is water-based isocyanate curing agent；
Wherein, the antiwear assistant is the modified Nano SiC or modified Nano CaCO modified through titanate coupling agent surface3
Middle one or two.
Compared with the existing technology, abrasion-resistance water coating provided by the invention selects hydroxy acrylic acid secondary breakup body resin,
Hardness, chemical-resistant and the salt fog resistance of coating can be improved；It is received through titanate esters through the modified modification in titanate coupling agent surface
Rice SiC or modified Nano CaCO3The active group on surface is crosslinked in can carrying out with hydroxy acrylic acid secondary breakup body resin, enhancing
Inorganic nano SiC or CaCO3With the binding force of hydroxy acrylic acid secondary breakup body resin, compatibility is improved, to significantly improve
The hardness and chemical-resistant of coating；Pass through NCO key in isocyanate curing agent and hydroxy acrylic acid secondary breakup body resin
The external crosslinking of hydroxyl group forms fine and close paint film, the General Promotion hardness of paint film, stain resistance and chemical-resistant.This hair
It acts synergistically between bright middle each component, significantly improves Wear Resistance of Coating and corrosion resistance, and nontoxic to people, be applicable in
Stronger, the application easy to spread of property.
Preferably, the solid content of the hydroxy acrylic acid secondary breakup body resin is 45-47%, hydroxy radical content 3.3-
4.2%.
Preferably, the viscosity of the hydroxy acrylic acid secondary breakup body resin is 300-3000mPas, pH value 7.0-
9.0。
Hardness, chemical-resistant and the salt fog resistance of coating can be improved in preferred hydroxy acrylic acid secondary breakup body resin,
It can also make coating gloss high simultaneously, assign the good appearance of coating.
Preferably, the modified Nano SiC or modified Nano CaCO3Dosage be 2-3%.
The dosage of preferred modified Nano SiC or modificated nano-CaCO_3 can be obviously improved aqueous polyurethane coating with bi component
Hardness and wearability.
Preferably, the modified Nano SiC or modified Nano CaCO3Preparation method include the following steps:
Step 1: by nano SiC or Nano-meter CaCO33It is dried 20-25h under vacuum condition, is scattered in dehydrated alcohol
In, obtain nano SiC or Nano-meter CaCO33Dispersion liquid；
Step 2: titanate coupling agent is soluble in water, obtain titanate coupling agent solution；
Step 3: the nano SiC or Nano-meter CaCO3 is added in the titanate coupling agent solution3In dispersion liquid, magnetic force
50-70min is stirred, then ultrasonic disperse 20-40min, in 10-30 DEG C of standing 1.5-3h, washed, dry, grinding must be modified and receive
Rice SiC or Nano-meter CaCO33。
Titanate coupling agent can be made sufficiently to combine or be adsorbed onto nano SiC or Nano-meter CaCO3 by above-mentioned preparation method3Table
Face, to enhance modified Nano SiC or Nano-meter CaCO33With the compatibility of other components, enhances the hardness of coating, improve coating
Wearability.
Preferably, the titanate coupling agent is isopropoxy three (dioctylphosphoric acid ester) titanate esters.
Titanate coupling agent can indicate with following general formula, (RO) m-Ti- (OX-R '-Y) n, in formula: 1≤m≤4, m ± n
≤6.R represents short carbon chain alkyl, and R ' represents Long carbon chain alkyl, and X represents the elements such as C, N, P, S, and Y represents hydroxyl, amino, ring
Oxygroup, double bond isoreactivity group.
Currently preferred three (dioctylphosphoric acid ester) titanate coupling agent of isopropoxy by alkoxy grp and nano SiC or
Nano-meter CaCO33The micro hydroxyl or proton of adsorption chemically react, and are coupled to its surface and form monolayer.Isopropyl oxygen
Long aliphatic carbon chain in base three (dioctylphosphoric acid ester) titanate coupling agent is softer, can be with hydroxy acrylic acid secondary breakup body
Resin carries out bending winding, enhances modified Nano SiC or modified Nano CaCO3With the binding force of film-forming resin, theirs are improved
Compatibility, while the crosslink density of paint film can also be improved, thus further increase the Saline alkali tolerance of paint film, weatherability and hardness,
The performances such as wear-resistant.
Preferably, the dosage of the titanate coupling agent is the nano SiC or Nano-meter CaCO33The 2.5-3.5% of quality
The dosage of preferred titanate coupling agent can make nano SiC or Nano-meter CaCO33It sufficiently combines or absorption titanate esters is even
Join agent.
Preferably, the dispersing agent is the high molecular weight block copolymer solution with pigment affinity groups.
High molecular weight block copolymer dispersing agent can make pigment solution flocculate by steric hindrance, the granules of pigments after solution flocculation
Seldom, thus the glossiness and intensity of paint film can be enhanced.
Preferably, the wetting agent is polyether silicone analog copolymer.
Polyether siloxane copolymer has the advantages that two kinds of substances of ethers and organic silicon, soaks with excellent ground
Property, excellent flowing promotion property, high-compatibility, and have and improve scratch resistance capability, coating surface layer tension and permeability can be improved
Can, ground is preferably soaked, and then enhance the adhesive force of coating.
Preferably, the defoaming agent is non-silicon class defoaming agent.
Preferred defoaming agent can effectively remove the micro-bubble in coating, keep coating even closer in conjunction with substrate, more have
Effect ground closed base material, prevents the substances such as water, oxygen from causing to corrode by bubble contact substrate.
Preferably, the levelling agent is esters of acrylic acid levelling agent.
Preferred levelling agent can substantially reduced construction when splashing, while improving and brush dragged to feel and film forming, it is final really
Protecting paint film has perfect levelling effect.
Preferably, the thickener is nonionic polyurethane thickener.
Preferred thickener can improve the sag resistance of coating, improve storage stability simultaneously while increasing product viscosity
Sedimentation is reduced, makes coating that there is preferable flowing and levelability, uniform filming performance, showing property of gloss and high thickening efficiency.
Preferably, the solid content of the isocyanate curing agent is 98-100%, NCO content 23-24%, and viscosity is
400-500mPa·s。
The preferred low viscosity aliphatic polymeric isocyanate resin of the present invention, it is good with Miscibility, it is easy stirring, is added
So that the coating of preparation has good gloss and compactness.
By select hydroxy radical content for 3.3-4.2% water-based hydroxyl polyacrylate dispersion and NCO content be 23-
24% water-based isocyanate forms a film after being crosslinked under special ratios, can get more fine and close paint film, makes the hardness, resistance to of paint film
Corrosivity and abrasion resistance properties are largely increased.
The present invention also provides the preparation methods of above-mentioned abrasion-resistance water coating, at least include the following steps:
Step a weighs each component according to the design proportion of above-mentioned abrasion-resistance water coating, by weighed deionized water, dispersion
Agent, defoaming agent, pigment and antiwear assistant stir evenly, and are ground to fineness≤15 μm, obtain aqueous color paste；
The aqueous color paste is added in water-based hydroxyl acrylic acid secondary breakup body resin by step b, is uniformly mixed, so
After sequentially add levelling agent, wetting agent and thickener, -4 glasss of viscosity of painting of adjustment viscosity to 25 DEG C are 80-100s, obtain component A；
A, B component are uniformly mixed by step c, obtain abrasion-resistance water coating.
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 wear-resistant paint of large-scale production, preparation is suitable for all various places, has a vast market foreground.
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 abrasion-resistance water coating, including component A and B component, and the component A includes following weight
Measure the raw material components of percentage: hydroxy acrylic acid secondary breakup body resin 50%, antiwear assistant 7.4%, dispersing agent 1%, wetting
Agent 0.3%, defoaming agent 0.5%, pigment 25%, levelling agent 0.5%, thickener 0.3% and deionized water 15%；
The B component is water-based isocyanate curing agent,
Wherein, the antiwear assistant is the modified Nano SiC modified through titanate coupling agent surface.
The modified Nano SiC's the preparation method is as follows:
Step 1: nano SiC is dried 20h in 110 DEG C of vacuum ovens, it is scattered in dehydrated alcohol, impregnates
30 minutes, ultrasonic disperse 30min, obtained nano SiC dispersion liquid under mechanical stirring；
Step 2: isopropoxy three (dioctylphosphoric acid ester) titanate esters for weighing nano SiC quality 2.5% are soluble in water, surpass
Sound disperses 20min, obtains titanate coupling agent solution；
Step 3: the titanate coupling agent solution is added in the nano SiC dispersion liquid, magnetic agitation 50min, so
Ultrasonic disperse 20min afterwards is filtered, washed in 10 DEG C of standing 3h and is placed on 110 DEG C of dryings of vacuum oven for 24 hours, and grinding must change
Property nano SiC.
Above-mentioned hydroxy acrylic acid secondary breakup body resin is Wan Hua chemical groups Co., Ltd2033；Dispersion
Agent is the BYK-190 of Germany Bi Ke；Wetting agent is the Tego270 of Digao；Defoaming agent is the Tego830 of Digao；Levelling agent is method
The PW336 that state first creates；Thickener is the PUR40 of the bright icepro of Germany；Pigment is the MA-100 carbon black of Mitsubishi；Water-based isocyanate
The TLA-100 of Asahi Chemical Industry, curing agent Japan.
The preparation step of above-mentioned abrasion-resistance water coating is as follows:
Step a weighs each component according to the design proportion of the abrasion-resistance water coating, by weighed deionized water, dispersion
Agent, defoaming agent, pigment and antiwear assistant are added in proportion container, are stirred 15 minutes and are uniformly dispersed with the speed of 1000r/min, ground
Fineness≤15 μm are milled to, aqueous color paste is obtained；
Weighed hydroxy acrylic acid secondary breakup body resin is added in paint mixing tank step b, in the stirring speed of 500r/min
Under degree, aqueous color paste is added in hydroxy acrylic acid secondary breakup body resin, stirring 10 minutes is continued with the speed of 1000r/min
It is uniformly mixed it, then adjusting revolving speed is 600r/min, sequentially adds levelling agent and wetting agent, continues stirring 10 minutes, adds
Enter thickener, -4 glasss of viscosity of painting of adjustment viscosity to 25 DEG C are 80s；
Step c, in use, A, B component are mixed, and the mass ratio of the component A and the B component is 4:1.
Embodiment 2
The embodiment of the present invention provides a kind of abrasion-resistance water coating, including component A and B component, and the component A includes following weight
Measure the raw material components of percentage: hydroxy acrylic acid secondary breakup body resin 65%, antiwear assistant 8%, dispersing agent 0.6%, wetting
Agent 0.1%, defoaming agent 0.3%, pigment 17%, levelling agent 0.4%, thickener 0.6% and deionized water 8%；
The B component is water-based isocyanate curing agent,
Wherein, the antiwear assistant is the modified Nano CaCO modified through titanate coupling agent surface3。
The modified Nano CaCO3The preparation method is as follows:
Step 1: by Nano-meter CaCO33It is dried 23h in 110 DEG C of vacuum ovens, is scattered in dehydrated alcohol, is soaked
Bubble 30 minutes, ultrasonic disperse 30min, obtains nano SiC dispersion liquid under mechanical stirring；
Step 2: weighing Nano-meter CaCO33Isopropoxy three (dioctylphosphoric acid ester) titanate esters of quality 3% are soluble in water, surpass
Sound disperses 20min, obtains titanate coupling agent solution；
Step 3: the titanate coupling agent solution is added in the nano SiC dispersion liquid, magnetic agitation 60min, so
Ultrasonic disperse 30min afterwards is filtered, washed in 20 DEG C of standing 2h and is placed on 110 DEG C of dryings of vacuum oven for 24 hours, and grinding must change
Property Nano-meter CaCO33。
Above-mentioned hydroxy acrylic acid secondary breakup body resin is Wan Hua chemical groups Co., Ltd2042；Dispersion
Agent is the BYK-194 of Germany Bi Ke；Wetting agent is the BYK-346 of Germany Bi Ke；Defoaming agent is the BYK- of the German Bi Ke of Digao
011；Levelling agent is the PW336 that France first creates；Thickener isGel 0620；Pigment is the MA-100 of Mitsubishi
Carbon black；The TLA-100 of Asahi Chemical Industry, water-based isocyanate curing agent Japan.
The preparation step of above-mentioned abrasion-resistance water coating is as follows:
Step a weighs each component according to the design proportion of the abrasion-resistance water coating, by weighed deionized water, dispersion
Agent, defoaming agent, pigment and antiwear assistant are added in proportion container, are stirred 15 minutes and are uniformly dispersed with the speed of 1000r/min, ground
Fineness≤15 μm are milled to, aqueous color paste is obtained；
Weighed hydroxy acrylic acid secondary breakup body resin is added in paint mixing tank step b, in the stirring speed of 500r/min
Under degree, aqueous color paste is added in hydroxy acrylic acid secondary breakup body resin, stirring 10 minutes is continued with the speed of 1000r/min
It is uniformly mixed it, then adjusting revolving speed is 600r/min, sequentially adds levelling agent and wetting agent, continues stirring 10 minutes, adds
Enter thickener, -4 glasss of viscosity of painting of adjustment viscosity to 25 DEG C are 90s；
Step c, in use, A, B component are mixed, and the mass ratio of the component A and the B component is 5:1.
Embodiment 3
The embodiment of the present invention provides a kind of abrasion-resistance water coating, including component A and B component, and the component A includes following weight
Measure the raw material components of percentage: hydroxy acrylic acid secondary breakup body resin 70%, antiwear assistant 10%, dispersing agent 0.2%, wetting
Agent 0.6%, defoaming agent 0.1%, pigment 13%, levelling agent 0.1%, thickener 1% and deionized water 5%；
The B component is water-based isocyanate curing agent,
Wherein, the antiwear assistant is through the modified modified Nano SiC in titanate coupling agent surface and modified CaCO3It is mixed
Object is closed, the mass ratio of the two is 1:1.
The modified Nano SiC or modified CaCO3The preparation method is as follows:
Step 1: by nano SiC or CaCO3It is dried 25h in 110 DEG C of vacuum ovens, is scattered in dehydrated alcohol
In, it impregnates 30 minutes, ultrasonic disperse 30min, obtains nano SiC dispersion liquid under mechanical stirring；
Step 2: weighing nano SiC or Nano-meter CaCO33Isopropoxy three (dioctylphosphoric acid ester) titanate esters of quality 3.5%
Soluble in water, ultrasonic disperse 20min obtains titanate coupling agent solution；
Step 3: the nano SiC or Nano-meter CaCO3 is added in the titanate coupling agent solution3In dispersion liquid, magnetic force
70min is stirred, then ultrasonic disperse 40min is filtered, washed in 30 DEG C of standing 1.5h and is placed on 110 DEG C of dryings of vacuum oven
For 24 hours, it grinds, obtains modified Nano SiC or modified Nano CaCO3。
Above-mentioned hydroxy acrylic acid secondary breakup body resin is Wan Hua chemical groups Co., Ltd Antkote2033；Dispersing agent
For the BYK-190 of German Bi Ke；Wetting agent is the Tego270 of Digao；Defoaming agent is the Tego830's and Germany Bi Ke of Digao
The mixture of BYK-011, wherein the mass ratio of Tego830 and BYK-011 is 1:2；Levelling agent is the PW336 that France first creates；Increase
Thick dose for the bright icepro of Germany PUR40 andThe mixture of Gel 0620, the mass ratio of the two are 1:1；Pigment is Japan
The MA-100 carbon black of Mitsubishi；The TLA-100 of Asahi Chemical Industry, water-based isocyanate curing agent Japan.
The preparation step of above-mentioned abrasion-resistance water coating is as follows:
Step a weighs each component according to the design proportion of the abrasion-resistance water coating, by weighed deionized water, dispersion
Agent, defoaming agent, pigment and antiwear assistant are added in proportion container, are stirred 15 minutes and are uniformly dispersed with the speed of 1000r/min, ground
Fineness≤15 μm are milled to, aqueous color paste is obtained；
Weighed hydroxy acrylic acid secondary breakup body resin is added in paint mixing tank step b, in the stirring speed of 500r/min
Under degree, aqueous color paste is added in hydroxy acrylic acid secondary breakup body resin, stirring 10 minutes is continued with the speed of 1000r/min
It is uniformly mixed it, then adjusting revolving speed is 600r/min, sequentially adds levelling agent and wetting agent, continues stirring 10 minutes, adds
Enter thickener, -4 glasss of viscosity of painting of adjustment viscosity to 25 DEG C are 100s；
Step c, in use, A, B component are mixed, and the mass ratio of the component A and the B component is 6:1.
Embodiment 4
The embodiment of the present invention provides a kind of abrasion-resistance water coating, including component A and B component, and the component A includes following weight
Measure the raw material components of percentage: hydroxy acrylic acid secondary breakup body resin 70%, antiwear assistant 2%, dispersing agent 1%, wetting agent
0.6%, defoaming agent 0.5%, pigment 10%, levelling agent 0.2%, thickener 0.7% and deionized water 15%；
The B component is water-based isocyanate curing agent,
Wherein, the antiwear assistant is through the modified modified Nano SiC in titanate coupling agent surface and modified CaCO3It is mixed
Object is closed, the mass ratio of the two is 2:1.
The modified Nano SiC's the preparation method is as follows:
Step 1: by nano SiC or Nano-meter CaCO33It is dried 20h in 110 DEG C of vacuum ovens, is scattered in anhydrous
In ethyl alcohol, impregnate 30 minutes, ultrasonic disperse 30min, obtains nano SiC dispersion liquid under mechanical stirring；
Step 2: weighing nano SiC or Nano-meter CaCO33Isopropoxy three (dioctylphosphoric acid ester) titanate esters of quality 3% are molten
Yu Shuizhong, ultrasonic disperse 20min obtain titanate coupling agent solution；
Step 3: the nano SiC or Nano-meter CaCO3 is added in the titanate coupling agent solution3In dispersion liquid, magnetic force
60min is stirred, then ultrasonic disperse 30min is filtered, washed in 25 DEG C of standing 2h and is placed on 110 DEG C of dryings of vacuum oven
For 24 hours, it grinds, obtains modified Nano SiC or modified Nano CaCO3。
Above-mentioned hydroxy acrylic acid secondary breakup body resin is Wan Hua chemical groups Co., Ltd2042 Hes2033 mixture, the mass ratio of the two are 1:1；Dispersing agent is the BYK-190's and BYK-194 of Germany Bi Ke
Mixture, wherein the mass ratio of BYK-190 and BYK-194 is 2:1；Wetting agent is the Tego270 of Digao；Defoaming agent is Digao
Tego830；Levelling agent is the PW336 that France first creates；Thickener is the PUR40 of the bright icepro of Germany；Pigment is the MA- of Mitsubishi
100 carbon blacks；The TLA-100 of Asahi Chemical Industry, water-based isocyanate curing agent Japan.
The preparation step of above-mentioned abrasion-resistance water coating is as follows:
Step a weighs each component according to the design proportion of the abrasion-resistance water coating, by weighed deionized water, dispersion
Agent, defoaming agent, pigment and antiwear assistant are added in proportion container, are stirred 15 minutes and are uniformly dispersed with the speed of 1000r/min, ground
Fineness≤15 μm are milled to, aqueous color paste is obtained；
Weighed hydroxy acrylic acid secondary breakup body resin is added in paint mixing tank step b, in the stirring speed of 500r/min
Under degree, aqueous color paste is added in hydroxy acrylic acid secondary breakup body resin, stirring 10 minutes is continued with the speed of 1000r/min
It is uniformly mixed it, then adjusting revolving speed is 600r/min, sequentially adds levelling agent and wetting agent, continues stirring 10 minutes, adds
Enter thickener, -4 glasss of viscosity of painting of adjustment viscosity to 25 DEG C are 90s；
Step c, in use, A, B component are mixed, and the mass ratio of the component A and the B component is 5:1.
The embodiment 1-4 modified Nano SiC being prepared and modificated nano-CaCO_3 are subjected to Fourier's infrared analysis, warp
The nano SiC of coupling agent treatment is in 1113cm-1There is the characteristic peak of long-chain Si-O-Si, and 916cm in place-1Place's Si-C key is stretched
The enhancing of contracting vibration peak can thus be concluded that, titanate coupling agent passes through the micro hydroxyl of alkoxy grp and nano SiC adsorption
It chemically reacts, the success of nano SiC coupling processing.
After before modified, Nano-meter CaCO33In 459cm-1、873cm-1And 713cm-1There is very strong infrared absorption at place, this is main
It is attributed to the stretching vibration and bending vibration of Ca-O.Compared with before modified, modified calcium carbonate is in 2 855cm of wave number-1,
2925cm-1, 2958cm-1There is a C-H group absorptions band at place, the absorption band be due to caused by the chain alkyl in metatitanic acid ester structure, by
This is it can be concluded that show that titanate coupling agent generates Hydrogenbond, Nano-meter CaCO3 with calcium carbonate3Coupling processing success.
Abrasion-resistance water coating manufactured in the present embodiment is subjected to quality testing according to professional standard, the results are shown in Table 1.
Table 1
Note: wear-resisting property test is according to the People's Republic of China's building industry professional standard-synthetic resin emulsion interior wall
In coating, the measurement standard of the 9266 building coating coating abrasion resistance of GB/T provided is tested, wherein scrub resistance number
>=300 be qualified product, and scrub resistance number >=1000 are Grade A, and scrub resistance number >=5000 are high-class product.
In conclusion the present invention is by the synergistic effect between each component so that the abrasion-resistance water coating of preparation is with excellent
Wearability, and abrasion resistance, water resistance, acid-proof alkaline are excellent, and VOC content is low, safety and environmental protection, practical valence with higher
Value.
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 abrasion-resistance water coating, including component A and B component, which is characterized in that the component A includes following weight percent
The raw material components of ratio: hydroxy acrylic acid secondary breakup body resin 50-70%, antiwear assistant 2-10%, dispersing agent 0.2-1%, profit
It humectant 0.1-0.6%, defoaming agent 0.1-0.5%, pigment 10-25%, levelling agent 0.1-0.5%, thickener 0.3-1.0% and goes
Ionized water 5-15%；
The B component is water-based isocyanate curing agent；
Wherein, the antiwear assistant is the modified Nano SiC or modified Nano CaCO modified through titanate coupling agent surface3In one
Kind or two kinds.
The mass ratio of component A and B component is 4-6:1.
2. abrasion-resistance water coating as described in claim 1, which is characterized in that the hydroxy acrylic acid secondary breakup body resin
Solid content is 45-47%, hydroxy radical content 3.3-4.2%.
3. abrasion-resistance water coating as claimed in claim 2, which is characterized in that the hydroxy acrylic acid secondary breakup body resin
Viscosity is 300-3000mPas, pH value 7.0-9.0.
4. abrasion-resistance water coating as described in claim 1, which is characterized in that the modified Nano SiC or modified Nano CaCO3
Preparation method include the following steps:
Step 1: by nano SiC or Nano-meter CaCO33It is dried 20-25h under vacuum condition, is scattered in dehydrated alcohol, is obtained
Nano SiC or Nano-meter CaCO33Dispersion liquid；
Step 2: titanate coupling agent is soluble in water, obtain titanate coupling agent solution；
Step 3: the nano SiC or Nano-meter CaCO3 is added in the titanate coupling agent solution3In dispersion liquid, magnetic agitation
50-70min, then ultrasonic disperse 20-40min is washed in 10-30 DEG C of standing 1.5-3h, dry, and grinding obtains modified Nano
SiC or Nano-meter CaCO33。
5. abrasion-resistance water coating as described in claim 1 or 4, which is characterized in that the titanate coupling agent is isopropoxy
Three (dioctylphosphoric acid ester) titanate esters.
6. abrasion-resistance water coating as claimed in claim 4, which is characterized in that the dosage of the titanate coupling agent is described receives
Rice SiC or Nano-meter CaCO33The 2.5-3.5% of quality.
7. abrasion-resistance water coating as described in claim 1, which is characterized in that the dispersing agent is the height with pigment affinity groups
Molecular weight block copolymer solution；And/or
The wetting agent is polyether silicone analog copolymer；And/or
The defoaming agent is non-silicon class defoaming agent.
8. abrasion-resistance water coating as described in claim 1, which is characterized in that the levelling agent is esters of acrylic acid levelling agent；
And/or
The thickener is nonionic polyurethane thickener.
9. abrasion-resistance water coating as described in claim 1, which is characterized in that the solid content of the isocyanate curing agent is
98-100%, NCO content 23-24%, viscosity 400-500mPas.
10. a kind of preparation method of abrasion-resistance water coating, 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 abrasion-resistance water coating, will be weighed
Deionized water, dispersing agent, defoaming agent, pigment and antiwear assistant stir evenly, and are ground to fineness≤15 μm, obtain aqueous color paste；
The aqueous color paste is added in water-based hydroxyl acrylic acid secondary breakup body resin by step b, be uniformly mixed, then according to
- 4 glasss of viscosity of painting of secondary addition levelling agent, wetting agent and thickener, adjustment viscosity to 25 DEG C are 80-100s, obtain component A；
A, B component are uniformly mixed by step c, obtain abrasion-resistance water coating.
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Application publication date: 20190416 |