CN106046980B - A kind of surface of stainless steel processing and anti-fouling method - Google Patents

A kind of surface of stainless steel processing and anti-fouling method Download PDF

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CN106046980B
CN106046980B CN201610489625.8A CN201610489625A CN106046980B CN 106046980 B CN106046980 B CN 106046980B CN 201610489625 A CN201610489625 A CN 201610489625A CN 106046980 B CN106046980 B CN 106046980B
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stainless steel
water
fouling
reaction
steel processing
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CN106046980A (en
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王力
赵欢
周圣文
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances
    • C08K9/06Ingredients treated with organic substances with silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1687Use of special additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives

Abstract

The invention discloses a kind of processing of surface of stainless steel and anti-fouling method, by preparing micron silica powder, construct to form micro-/ nano pattern in matrix surface using the water soluble acrylic acid composite coating doped with amination modified micron silica, without destroying substrate material surface, composite coating further is strengthened to form micro-/ nano hierarchy with stearic acid reaction, make surface that there is ultra-hydrophobicity, obtained stainless steel substrates contact angle on surface of coating can reach 152.8 °, roll angle is 8 °, shows excellent antifouling property.The inventive method is simple and practical, and raw material sources are extensive, cheap, has extensive industrial application value.

Description

A kind of surface of stainless steel processing and anti-fouling method
Technical field
The invention belongs to Treatment of Metal Surface and technical field of modification, and in particular to a kind of processing of surface of stainless steel and Anti-fouling method.
Background technology
In the industry such as chemical industry, petrochemical industry, atomic energy, metal erosion not only causes surprising economic loss, also The health of the people may be endangered, some even can cause serious consequence for a long time.Metal erosion is metal by surrounding medium Chemical change occurs for effect, wherein main medium is exactly water.Therefore, assigning metal surface superhydrophobic performance will effectively slow down Corrosion of metal.Super-hydrophobic phenomenon is substantially shown on the body of plant surface and some animals and insect in daily life, Such as lotus leaf, rice leaf, the eyes of mosquito, the wing of butterfly, the leg of water skipper, the eyes of moth.It is biological in by nature The inspiration of body ultra-hydrophobicity, the design and development of artificial super hydrophobic surface receive much concern always, and metal super-hydrophobic surface removes Have outside Corrosion Protection, also with the characteristic such as automatically cleaning, drag reduction, anti-freeze.As metal material is wide in workers and peasants' industry General application, metallic matrix super hydrophobic surface are also had developed extensively in basic research and commercial Application.
Early in 1997, Barthlott and Neinhuis investigated the surface characteristics of 200 various hydrophobic plant species, knot Fruit shows that " lotus leaf effect " originates from the combination of structure of micro-/ nano composite and the hydrophobic wax of low-surface-energy.Opened by this Hair, two classes can be simply divided into by preparing the technical method of super hydrophobic surface in recent years:One kind is by with low-surface-energy Base material on construct coarse structure;Another kind of is to modify rough surface by using low-surface-energy material.To most metals base material For example for magnesium, aluminium, iron and its alloy etc., their smooth surfaces are hydrophilic.Therefore, to assign metallic substrates super-hydrophobic Property, on the one hand on the other hand also it must carry out surface modification with low-surface energy substance in surface construction coarse structure.This two side Face can both be carried out simultaneously, can also point multistep carry out.
Metal super-hydrophobic surface has many valuable characteristics, is achieved in terms of basic research and commercial Application certain Progress, but it is all more or less there is defect and deficiency for preparing the method for super-hydrophobic metal surface, and also these are lacked The application for limiting it to a certain extent in the industry is trapped in, metal super-hydrophobic surface is successfully applied in industrial production, Need to also from it is following some explored:
1) preparation technology of super hydrophobic surface is optimized:Prepare in theory super hydrophobic surface should try one's best technique it is simple and environmentally-friendly, Cost is cheap.Spraying process is simple to operate, and cost benefit is high, and preparation condition requires not harsh, but is needed again in terms of practical application Miscellaneous preparation.In addition, etching process would generally continue a few minutes to several days, complex technical process.
2) super hydrophobic surface thin layer durability and stability have much room for improvement:The deficiency of surface durability and stability is also One common weakness of most of super hydrophobic surfaces, thus limit its application prospect out of doors.Many metal super-hydrophobics Surface easily loses super-hydrophobicity after adverse circumstances particularly organic solvent and the liquid of heat, illustrates its chemical stability Difference;It is most of to report that the super-hydrophobic coat for spraying production is poor to substrate adhesion, it may be possible to by the loosening of grit and that Caused by independence between this.The method for being used for improving adhesiveness between sprayed coating and substrate at present substantially has two kinds:It is a kind of It is to add a kind of binding agent after spray coating, this method can improve the physical stability of coating, but can cause hydrophobicity Decline, another method is to form mixture with selected materials and adhesive first, is then sprayed on substrate, this method Good effect has been obtained in some nearest researchs.
3) metal surface treatment process is easy to mass produce and is easy to construct:In terms of metal is used for industrial side Face, complicated, bulky, the Specific construction process to super hydrophobic surface brings no small challenge, portion of techniques such as electrification Learn technique and higher is required to construction equipment, be not suitable for large area operation;Metal component surface is easy to repair and work progress can not Permanent damage is caused to matrix.Chemical corrosion method and plasma treatment technique are easy to permanent to metal base generation Damage.
4) broad applicability of the metal surface treatment process to different metal substrate is further expanded:It is required that metal surface system Standby technique applicable performance is strong, has broad applicability to different metallic substrates.Super-hydrophobic metal surface prepared at this stage A kind of or a limited number of kind of metallic substrates are only applicable to mostly, and applicability is weaker;The metal watch for the super-hydrophobicity being successfully prepared Its ultra-hydrophobicity is not lost still after assembled and transformation in face.
The content of the invention
It is an object of the invention in view of the deficienciess of the prior art, proposing a kind of surface of stainless steel processing and preventing Dirty method, antifouling process is carried out using super hydrophobic surface.
The present invention is carried out especially by following technical scheme:
A kind of surface of stainless steel processing and anti-fouling method, specifically include following steps:
Step 1:The modification of nano silicon
1.1 are placed in drying nano silicon-dioxide powdery in absolute ethyl alcohol, ultrasonic disperse 30min, and dispersion liquid a is made;
1.2 are added to silane resin acceptor kh-550 in the mixed solution of second alcohol and water, with watery hydrochloric acid adjust pH to 3-5 it Between, magnetic agitation 0.5h under normal temperature, hydrolyzate b is made;
1.3 are added dropwise to hydrolyzate b in the three-necked flask equipped with dispersion liquid a, are placed in constant temperature magnetic force water-bath, rise Temperature is washed 3 times to 70 DEG C, back flow reaction 6h with absolute ethyl alcohol, is ground after 2h is dried in 110 DEG C of baking ovens, by the powder after grinding End is distributed to ultrasonic vibration 10min in distilled water, takes lower sediment thing after 6h is dried in 110 DEG C of baking ovens, ground 400 mesh sieve Obtain modified micron silica powder.
Step 2:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings
2.1 add distilled water in water-borne acrylic coatings is diluted, and magnetic agitation 10min obtains uniform dilution;
2.2 are added to Modified Micron grade silicon dioxide in dilution, ultrasonic disperse 30min, make its fully dispersed;
Stainless steel substrates surface is polished and uses acetone oil removing by 2.3, and absolute ethyl alcohol removes water, finally by acrylic acid/micron dioxy SiClx coating is coated in sheet surface, solidifies 2h at 50 DEG C, and stainless steel substrates coating sample is made.
Step 3:The self-assembling reaction of stearic acid solution
The stainless steel substrates coating sample prepared is immersed in stearic acid ethanol solution and carries out self-assembling reaction, during reaction Between be 3h, washed respectively with ethanol and distilled water again after completion of the reaction, under normal temperature dry.
Further:
The mass volume ratio of silicon-dioxide powdery and absolute ethyl alcohol described in step 1.1 of the present invention is 1:4g/ml.
The mass fraction of silane resin acceptor kh-550 described in step 1.2 of the present invention is the 10% of silicon-dioxide powdery.
It is 3 by volume in the mixed solution of second alcohol and water described in step 1.2 of the present invention:1 configuration.
The mass ratio of water-borne acrylic coatings and distilled water described in step 2.1 of the present invention is 10:1.
Modified Micron grade silicon dioxide described in step 2.2 of the present invention is added in dilution with 1.2% mass ratio.
Stearic acid ethanol solution concentration described in step 3 of the present invention is 10%.
Beneficial effects of the present invention:Technical solution of the present invention utilizes the water doped with amination modified micron silica Property acrylic acid composite coating construct to form micro-/ nano pattern in matrix surface, without destroy substrate material surface, by composite coating Further strengthen to form micro-/ nano hierarchy with stearic acid reaction, make surface that there are ultra-hydrophobicity, obtained stainless steel substrates Contact angle on surface of coating can reach 152.8 °, and roll angle is 8 °, shows excellent antifouling property.
Embodiment
With reference to embodiment, the present invention is described further, as described below, is only the preferable implementation to the present invention Example, is not limited the present invention, any person skilled in the art is possibly also with the disclosure above Technology contents be changed to the equivalent embodiment changed on an equal basis.It is every of the invention without departing from the present invention program content, foundation Technical spirit any simple modification that following examples are made or equivalent variations, all fall within protection scope of the present invention.
The invention discloses a kind of processing of surface of stainless steel and anti-fouling method, using doped with amination modified micron The water soluble acrylic acid composite coating of grade silicon dioxide is constructed to form micro-/ nano pattern in matrix surface, without destroying matrix material Surface, composite coating further is strengthened to form micro-/ nano hierarchy with stearic acid reaction, makes surface that there is super-hydrophobicity Energy.
Concrete technical scheme is:
Part I:The modification of nano silicon.
The drying nano silicon-dioxide powdery of certain mass is placed in absolute ethyl alcohol, silicon-dioxide powdery and absolute ethyl alcohol Mass volume ratio be 1:4g/ml, ultrasonic disperse 30min, dispersion liquid a is made;By silane resin acceptor kh-550, (mass fraction is 10%) silicon-dioxide powdery is added in the mixed solution of second alcohol and water (about 12ml liquid, volume ratio 3:1), with dilute salt To between 3-5 magnetic agitation 0.5h under normal temperature, hydrolyzate b is made in acid for adjusting pH;Hydrolyzate b is added dropwise to equipped with scattered In liquid a three-necked flask, be placed in constant temperature magnetic force water-bath, be warming up to 70 DEG C, back flow reaction 6h, after with absolute ethyl alcohol wash 3 It is secondary, ground after 2h is dried in 110 DEG C of baking ovens, the powder after grinding is distributed to ultrasonic vibration 10min in distilled water, removes layer For sediment after 6h is dried in 110 DEG C of baking ovens, ground 400 mesh sieve obtains modified micron silica powder.
Part II:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings.
Distilled water (mass fraction is the 10% of water-borne acrylic coatings) is added in water-borne acrylic coatings to be diluted, The mass ratio of water-borne acrylic coatings and distilled water is 10:1, magnetic agitation 10min obtains uniform dilution;By Modified Micron level Silica is added to wherein with 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2% mass ratio, ultrasonic disperse 30min, make its fully dispersed.Stainless steel substrates surface is polished and uses acetone oil removing, absolute ethyl alcohol removes water, finally by acrylic acid/ Micron silica coating is coated in sheet surface, solidifies 2h at 50 DEG C, and stainless steel substrates coating sample is made.
Part III:The self-assembling reaction of stearic acid solution.
By the stainless steel substrates coating sample prepared be immersed in concentration be 3%, 5%, 8%, 10%, 12%, 15% it is hard Self-assembling reaction is carried out in resin acid ethanol solution, the reaction time is respectively 1h, 2h, 3h, 5h, 10h, 15h, 20h, 24h, 48h.Instead Washed with ethanol and distilled water after answering, dried under normal temperature respectively again.
Embodiment 1
A kind of surface of stainless steel processing and anti-fouling method, specifically include following steps:
Part I:The modification of nano silicon.
The drying nano silicon-dioxide powdery of certain mass (5g) is placed in 20ml absolute ethyl alcohols, ultrasonic disperse 30min, Dispersion liquid a is made;Silane resin acceptor kh-550 (mass fraction is the 10% of silicon-dioxide powdery) is added to second alcohol and water (about 12ml liquid, volume ratio 3 in mixed solution:1) pH, is adjusted between 3-5 with watery hydrochloric acid, magnetic agitation under normal temperature 0.5h, hydrolyzate b is made;Hydrolyzate b is added dropwise in the three-necked flask equipped with dispersion liquid a, is placed in constant temperature magnetic force water-bath Pot in, be warming up to 70 DEG C, back flow reaction 6h, after wash 3 times with absolute ethyl alcohol, in 110 DEG C of baking ovens drying 2h after grind, will grind Powder after mill is distributed to ultrasonic vibration 10min in distilled water, takes lower sediment thing after 6h is dried in 110 DEG C of baking ovens, grinding Cross 400 mesh sieves and obtain modified micron silica powder.
Part II:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings.
0.5g distilled water (mass fraction is the 10% of water-borne acrylic coatings) is added in 5g water-borne acrylic coatings to enter Row dilution, magnetic agitation 10min obtain uniform dilution;Modified Micron grade silicon dioxide is added to 1.2% mass ratio Wherein, ultrasonic disperse 30min, make its fully dispersed.Stainless steel substrates surface to be polished and uses acetone oil removing, absolute ethyl alcohol removes water, Acrylic acid/micron silica coating is finally coated in sheet surface, solidifies 2h at 50 DEG C, stainless steel substrates coating is made Sample.
Part III:The self-assembling reaction of stearic acid solution.
The stainless steel substrates coating sample prepared is immersed in the stearic acid ethanol solution that concentration is 10% and carried out from group Reaction cartridge, reaction time are respectively 3h.Washed with ethanol and distilled water, be drying to obtain under normal temperature respectively again after completion of the reaction.
Embodiment 2
A kind of surface of stainless steel processing and anti-fouling method, specifically include following steps:
Part I:The modification of nano silicon.
The drying nano silicon-dioxide powdery of certain mass (10g) is placed in 40ml absolute ethyl alcohols, ultrasonic disperse 30min, dispersion liquid a is made;Silane resin acceptor kh-550 (mass fraction is the 10% of silicon-dioxide powdery) is added to ethanol With (about 12ml liquid, volume ratio 3 in the mixed solution of water:1) pH, is adjusted between 3-5 with watery hydrochloric acid, and magnetic force stirs under normal temperature 0.5h is mixed, hydrolyzate b is made;Hydrolyzate b is added dropwise in the three-necked flask equipped with dispersion liquid a, is placed in constant temperature magnetic force water In bath, be warming up to 70 DEG C, back flow reaction 6h, after washed 3 times with absolute ethyl alcohol, in 110 DEG C of baking ovens dry 2h after grind, will Powder after grinding is distributed to ultrasonic vibration 10min in distilled water, takes lower sediment thing to be ground after 6h is dried in 110 DEG C of baking ovens Honed 400 mesh sieve obtains modified micron silica powder.
Part II:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings.
1g distilled water (mass fraction is the 10% of water-borne acrylic coatings) is added in 10g water-borne acrylic coatings to carry out Dilution, magnetic agitation 10min obtain uniform dilution;Modified Micron grade silicon dioxide is added to wherein with 1% mass ratio, Ultrasonic disperse 30min, make its fully dispersed.Stainless steel substrates surface is polished and uses acetone oil removing, absolute ethyl alcohol removes water, finally will Acrylic acid/micron silica coating is coated in sheet surface, solidifies 2h at 50 DEG C, and stainless steel substrates coating sample is made.
Part III:The self-assembling reaction of stearic acid solution.
The stainless steel substrates coating sample prepared is immersed in the stearic acid ethanol solution that concentration is 8% and carries out self assembly Reaction, the reaction time is respectively 2h.Washed with ethanol and distilled water, be drying to obtain under normal temperature respectively again after completion of the reaction.
Embodiment 3
A kind of surface of stainless steel processing and anti-fouling method, specifically include following steps:
Part I:The modification of nano silicon.
The drying nano silicon-dioxide powdery of certain mass (5g) is placed in 20ml absolute ethyl alcohols, ultrasonic disperse 30min, Dispersion liquid a is made;Silane resin acceptor kh-550 (mass fraction is the 10% of silicon-dioxide powdery) is added to second alcohol and water (about 12ml liquid, volume ratio 3 in mixed solution:1) pH, is adjusted between 3-5 with watery hydrochloric acid, magnetic agitation under normal temperature 0.5h, hydrolyzate b is made;Hydrolyzate b is added dropwise in the three-necked flask equipped with dispersion liquid a, is placed in constant temperature magnetic force water-bath Pot in, be warming up to 70 DEG C, back flow reaction 6h, after wash 3 times with absolute ethyl alcohol, in 110 DEG C of baking ovens drying 2h after grind, will grind Powder after mill is distributed to ultrasonic vibration 10min in distilled water, takes lower sediment thing after 6h is dried in 110 DEG C of baking ovens, grinding Cross 400 mesh sieves and obtain modified micron silica powder.
Part II:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings.
0.5g distilled water (mass fraction is the 10% of water-borne acrylic coatings) is added in 5g water-borne acrylic coatings to enter Row dilution, magnetic agitation 10min obtain uniform dilution;Modified Micron grade silicon dioxide is added to 1.5% mass ratio Wherein, ultrasonic disperse 30min, make its fully dispersed.Stainless steel substrates surface to be polished and uses acetone oil removing, absolute ethyl alcohol removes water, Acrylic acid/micron silica coating is finally coated in sheet surface, solidifies 2h at 50 DEG C, stainless steel substrates coating is made Sample.
Part III:The self-assembling reaction of stearic acid solution.
The stainless steel substrates coating sample prepared is immersed in the stearic acid ethanol solution that concentration is 12% and carried out from group Reaction cartridge, reaction time are respectively 5h.Washed with ethanol and distilled water, be drying to obtain under normal temperature respectively again after completion of the reaction.
Embodiment 4
A kind of surface of stainless steel processing and anti-fouling method, specifically include following steps:
Part I:The modification of nano silicon.
The drying nano silicon-dioxide powdery of certain mass (5g) is placed in 20ml absolute ethyl alcohols, ultrasonic disperse 30min, Dispersion liquid a is made;Silane resin acceptor kh-550 (mass fraction is the 10% of silicon-dioxide powdery) is added to second alcohol and water (about 12ml liquid, volume ratio 3 in mixed solution:1) pH, is adjusted between 3-5 with watery hydrochloric acid, magnetic agitation under normal temperature 0.5h, hydrolyzate b is made;Hydrolyzate b is added dropwise in the three-necked flask equipped with dispersion liquid a, is placed in constant temperature magnetic force water-bath Pot in, be warming up to 70 DEG C, back flow reaction 6h, after wash 3 times with absolute ethyl alcohol, in 110 DEG C of baking ovens drying 2h after grind, will grind Powder after mill is distributed to ultrasonic vibration 10min in distilled water, takes lower sediment thing after 6h is dried in 110 DEG C of baking ovens, grinding Cross 400 mesh sieves and obtain modified micron silica powder.
Part II:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings.
0.5g distilled water (mass fraction is the 10% of water-borne acrylic coatings) is added in 5g water-borne acrylic coatings to enter Row dilution, magnetic agitation 10min obtain uniform dilution;Modified Micron grade silicon dioxide is added to 0.5% mass ratio Wherein, ultrasonic disperse 30min, make its fully dispersed.Stainless steel substrates surface to be polished and uses acetone oil removing, absolute ethyl alcohol removes water, Acrylic acid/micron silica coating is finally coated in sheet surface, solidifies 2h at 50 DEG C, stainless steel substrates coating is made Sample.
Part III:The self-assembling reaction of stearic acid solution.
The stainless steel substrates coating sample prepared is immersed in the stearic acid ethanol solution that concentration is 3% and carries out self assembly Reaction, the reaction time is respectively 1h.Washed with ethanol and distilled water, be drying to obtain under normal temperature respectively again after completion of the reaction.
Embodiment 5
A kind of surface of stainless steel processing and anti-fouling method, with embodiment 4, difference is modification preparation process Micron silica is added in the dilution of acrylic coating with 0.8% mass ratio;The stainless steel substrates prepared are applied Layer sample is immersed in the stearic acid ethanol solution that concentration is 5% and carries out self-assembling reaction, reaction time 2h.
Embodiment 6
A kind of surface of stainless steel processing and anti-fouling method, with embodiment 2, difference is modification preparation process Micron silica is added in the dilution of acrylic coating with 1.8% mass ratio;The stainless steel substrates prepared are applied Layer sample is immersed in the stearic acid ethanol solution that concentration is 15% and carries out self-assembling reaction, reaction time 10h.
Embodiment 7
A kind of surface of stainless steel processing and anti-fouling method, with embodiment 2, difference is modification preparation process Micron silica is added in the dilution of acrylic coating with 2% mass ratio;The stainless steel substrates coating that will be prepared Sample is immersed in the stearic acid ethanol solution that concentration is 12% and carries out self-assembling reaction, reaction time 15h.
Embodiment 8
A kind of surface of stainless steel processing and anti-fouling method, with embodiment 2, difference is modification preparation process Micron silica is added in the dilution of acrylic coating with 3% mass ratio;The stainless steel substrates coating that will be prepared Sample is immersed in the stearic acid ethanol solution that concentration is 10% and carries out self-assembling reaction, reaction time 20h.
The contrast test of embodiment 9
The factor of processing method of the present invention will be influenceed:The addition of silicon dioxide granule, stearic acid ethanol solution concentration, from Reaction time progress single factor analysis is assembled, specific data are shown in Table 1~3.
When stearic acid concentration is 10%, when the self-assembling reaction time is 3h, contact angle is with micron silica particle Addition delta data is as follows:
The contact angle of table 1 changes with the addition of micron silica particle
Addition 0.5% 0.8% 1% 1.2% 1.5% 1.8% 2% 3%
Contact angle 106.1° 138.2° 144.6° 152.8° 140.2° 133.3° 120.3° 115.1
When the addition of micron silica particle is 1.2%, when the self-assembling reaction time is 3h, contact angle is with tristearin Sour ethanol solution concentration delta data is as follows:
The contact angle of table 2 changes with stearic acid ethanol solution concentration
Concentration 3% 5% 8% 10% 12% 15%
Contact angle 130.2° 138.2° 141.5° 152.8° 120.3° 118.9°
When stearic acid concentration is 10%, the addition of micron silica particle is 1.2%, and contact angle is anti-with self assembly Answer the data of time change as follows:
The contact angle of table 3 is with self-assembling reaction time change
Time 1h 2h 3h 5h 10h 15h 20h 24h 48h
Contact angle 135.5° 144.8° 152.8° 130.2° 100.6° 99.9° 96.1° 98.7° 94.0°
Considered by the aggregation of data of table 1~3, optimum condition of the invention is this Modified Micron grade silicon dioxide with 1.2% Mass ratio is added in dilution;Stearic acid ethanol solution concentration is 10%;The self assembly immersion reaction time is 3h.

Claims (7)

1. a kind of surface of stainless steel processing and anti-fouling method, it is characterised in that comprise the following steps:
Step 1:The modification of nano silicon
1.1 are placed in drying nano silicon-dioxide powdery in absolute ethyl alcohol, ultrasonic disperse 30min, and dispersion liquid a is made;
1.2 are added to silane resin acceptor kh-550 in the mixed solution of second alcohol and water, and pH is adjusted between 3-5 with watery hydrochloric acid, Magnetic agitation 0.5h under normal temperature, hydrolyzate b is made;
1.3 are added dropwise to hydrolyzate b in the three-necked flask equipped with dispersion liquid a, are placed in constant temperature magnetic force water-bath, are warming up to 70 DEG C, back flow reaction 6h, washed 3 times with absolute ethyl alcohol, ground after 2h is dried in 110 DEG C of baking ovens, by the powder after grinding point Ultrasonic vibration 10min in distilled water is scattered to, taking lower sediment thing, ground 400 mesh sieve obtains after 6h is dried in 110 DEG C of baking ovens Modified micron silica powder;
Step 2:Modified Micron grade silicon dioxide is scattered in water-borne acrylic coatings
2.1 add distilled water in water-borne acrylic coatings is diluted, and magnetic agitation 10min obtains uniform dilution;
2.2 are added to Modified Micron grade silicon dioxide in dilution, ultrasonic disperse 30min, make its fully dispersed;
Stainless steel substrates surface is polished and uses acetone oil removing by 2.3, and absolute ethyl alcohol removes water, finally will
Acrylic acid and micron silica coating are coated in sheet surface, solidify 2h at 50 DEG C, and stainless steel substrates coating is made Sample;
Step 3:The self-assembling reaction of stearic acid solution
The stainless steel substrates coating sample prepared is immersed in stearic acid ethanol solution and carries out self-assembling reaction, the reaction time is 3h, washed with ethanol and distilled water, dried under normal temperature respectively again after completion of the reaction.
2. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that step 1.1 Described in silicon-dioxide powdery and absolute ethyl alcohol mass volume ratio be 1:4g/ml.
3. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that step 1.2 Described in silane resin acceptor kh-550 mass fraction be silicon-dioxide powdery 10%.
4. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that step 1.2 Described in second alcohol and water mixed solution in by volume be 3:1 configuration.
5. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that step 2.1 Described in water-borne acrylic coatings and distilled water mass ratio be 10:1.
6. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that step 2.2 Described in Modified Micron grade silicon dioxide be added to 1.2% mass ratio in dilution.
7. a kind of surface of stainless steel processing according to claim 1 and anti-fouling method, it is characterised in that in step 3 Described stearic acid ethanol solution concentration is 10%.
CN201610489625.8A 2016-06-28 2016-06-28 A kind of surface of stainless steel processing and anti-fouling method Expired - Fee Related CN106046980B (en)

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CN102898885A (en) * 2012-10-23 2013-01-30 中国科学技术大学 Cheap modified paint self-cleaning coating with super-hydrophobicity and preparation method and application thereof
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