CN110452604A - A kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade - Google Patents
A kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade Download PDFInfo
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Abstract
The invention discloses a kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade, by surface modifier and dehydrated alcohol mixed dissolution, calcium sulfate crystal whiskers, nano silica stirring in water bath, the modified calcium sulfate crystal whiskers-nano silica in filtering, dry surface is added；Graphene oxide and sodium taurocholate are mixed, adds deionized water ultrasonic disperse, adds hydration hydrazine reaction, benzotriazole aqueous solution and sodium benzoate is added to mix, stands, remove supernatant, be centrifugated, wash to obtain compound corrosion inhibitor；Modified calcium sulfate crystal whiskers-the nano silica in epoxy resin, surface, heptadecafluorodecyl triethoxysilane are mixed, bi-component addition type silica gel and compound corrosion inhibitor is added to mix, add mixed solvent, Ricinate, high speed grinding after dispersion machine dispersion, add levelling agent, curing agent, high speed grinding filters to obtain hydrophobic antifreeze viscous corrosion inhibition coating, fan blade surface is applied over by the way of compressed air spraying, room temperature curing obtains hydrophobic antifreeze viscous corrosion inhibiting coating.
Description
Technical field
The invention belongs to fan blade fields, and in particular to a kind of spraying modification side of hydrophobic antifreeze viscous inhibition fan blade
Method.
Background technique
Wind-power electricity generation refers to that the kinetic energy kept watch switchs to electric energy.Wind energy is a kind of to clean non-harmful renewable energy energy
Source is utilized by people very early, is mainly drawn water by windmill, flour milling etc., and present, and interested people are how to utilize
Wind generates electricity.It is very environmentally friendly using wind-power electricity generation, and the wind energy amount of accumulateing is huge, therefore is increasingly subject to the attention of countries in the world.
Wind power plant is the equipment produced electricl energy using wind energy.Currently, China Wind Power generating equipment computer system market is just
As other industry, the threat from other rivals inside itself industry is not only born, and to be watched out for potential
The competition of incomer, substitute from related industry, while industrial profit will also be by upstream supplier and downstream client
It squeezes.Initially wind power equipment industry under policy " umbrella " is just placed oneself in the midst of in starting, nowadays will be welcome more open more fair competing
Strive environment.
If fan blade surface occurs to freeze viscous phenomenon, wind power generating set normal operation will affect, so antifreeze viscous technology
Extensive concern is caused.Antifreeze viscous technology mainly includes anti-icing technology and easy clearing ice technology.Anti-icing technology is to pass through spray
Antifreeze stick coating is applied to improve the hydrophobicity of body surface, so as to prevent body surface from freezing.Under normal circumstances, object table
Face still can freeze, so developing easy clearing ice technology is also current research hotspot.Current deicing mode is broadly divided into machinery
Deicing, chemical deicing and coating deicing.Mechanical deicing, chemical deicing mode labor intensity is high, energy consumption is high.And coating deicing mode
Have the characteristics that labor intensity is low, energy consumption is small.Therefore carrying out antifreeze viscous technology relevant to coating has important theory significance
And practical value.Coating deicing is to construct coating in body surface, changes the wetability of body surface by coating and surface is tied
Structure, to achieve the purpose that with the less energy of lesser power or consumption come deicing, so research is suitble in cryogenic conditions herein
Under the antifreeze stick coating that uses of fan blade.It is viscous to harm caused by object that jelly is avoided or reduced as far as possible, is provided and is suitble to it
The antifreeze stick coating of requirement reduces anti-icing and deicing difficulty.
But commercially available fan blade is there are hydrophobic antifreeze viscosity, rust inhibition is insufficient, the application is by being modified sulfuric acid for surface
Calcium pyroborate-nano silica, compound corrosion inhibitor are spiked into epoxy resin and bi-component addition type silica gel, are prepared for hydrophobic anti-
Freeze viscous corrosion inhibition coating, then hydrophobic antifreeze viscous corrosion inhibiting coating is prepared for using the modified method of spraying, gained fan blade has excellent
Different hydrophobic antifreeze viscosity energy and corrosion inhibition.
Summary of the invention
The purpose of the present invention is being directed to existing problem, the spraying for providing a kind of hydrophobic antifreeze viscous inhibition fan blade changes
Property method, according to the modified fan blade of this method have excellent hydrophobic antifreeze viscosity can and corrosion inhibition.
The present invention is achieved by the following technical solutions:
A kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade, includes the following steps, following raw materials by weight:
(1) calcium sulfate crystal whiskers-nano silica surface is modified:
0.16-0.24 parts of surface modifiers and 15-20 parts of dehydrated alcohol mixed dissolutions are uniform, 2-3 parts of calcium sulfate crystal whiskers of addition,
2-3 parts of nano silicas, in 90-95 DEG C of stirred in water bath 15-25min, filtering is dried in vacuo to obtain surface at 70-75 DEG C
Modified calcium sulfate crystal whiskers-nano silica；
It the use of odium stearate is that modifying agent is modified to calcium sulfate crystal whiskers, nano silica progress surface, prepared by sodium ion
Cheng Zhonghui enters whisker, and modifying agent mainly exists in the form of chemisorption on whisker surface, and with a small amount of physical absorption
Hydrophobic layer, modified hydrophobic effect is good, is spiked into epoxy resin and prepares hydrophobic antifreeze stick coating, can improve blower by spraying
The hydrophobic antifreeze sticky energy of blade；
(2) preparation of compound corrosion inhibitor:
0.05-0.1 parts of graphene oxides and 0.1-0.2 parts of sodium taurocholates are mixed, 50-100 parts of deionized water ultrasonic disperses are added
Afterwards, 0.02-0.04 parts of hydrazine hydrates are added, suspension is reacted to obtain at 80-85 DEG C, is slowly added to 1-2 parts of three nitrogen of benzo thereto
Azoles aqueous solution and 1-2 parts of sodium benzoates mix, and stand, remove supernatant, centrifuge separation, washing obtain compound corrosion inhibitor；
First pass through and redox graphene-sodium taurocholate composite suspension liquid obtained using reducing agent hydrazine hydrate reduction, dispersibility and
Stability is excellent, and sodium taurocholate is adsorbed on redox graphene by hydrogen bond action and strong Van der Waals force, due to oxygen reduction fossil
The lamellar structure of black alkene-sodium taurocholate, the micropore and redox graphene-sodium taurocholate for plugging epoxy resin well are in ring
Good dispersibility in oxygen resin；Benzotriazole is a kind of important chemical products, is had in terms of metal rust preventing, inhibition important
Using institute's nitrogen atom has very strong electron-withdrawing ability, is easy to be bonded with the oxygen-containing functional group on graphene oxide；Benzo three
Nitrogen azoles has more stable structure compared with sodium benzoate, and corrosion inhibiter passes through N, O atom and copper surface respectively and forms coordinate bond,
The coordinate bond wherein generated between benzoate anion and copper is more stable, and benzotriazole is then mainly covered on by physical absorption
Metal surface, corrosion inhibiter pass through physical-chemical and reduce the area contacted between the surface Cu and corrosive medium by way of depositing, from
And inhibition efficiency is improved, embody certain synergistic effect；
(3) spraying of fan blade is modified:
By the modified calcium sulfate crystal whiskers-nano silica in gained surface in 80-100 parts of epoxy resin, (1), 0.8-1 part 17
Fluorine ruthenium triethoxysilane is uniformly mixed, and is added gained compound corrosion inhibitor in 9-15 parts of bi-component addition type silica gel and (2) and is filled
Divide and mix, 16-20 parts of mixed solvents, 0.8-1 parts of Ricinates are added, with high speed grinding 1- after dispersion machine dispersion 30-50min
1.6-2 parts of levelling agents, 8-10 parts of curing agent are added in 2h, and high speed grinding 10-20min filters to obtain hydrophobic antifreeze viscous corrosion inhibition coating,
The coating is applied over fan blade surface by the way of compressed air spraying, room temperature curing 3-4h is made hydrophobic antifreeze viscous
Corrosion inhibiting coating；
By the way that the modified calcium sulfate crystal whiskers-nano silica in surface, compound corrosion inhibitor are added to epoxy resin, the 17 fluorine last of the ten Heavenly stems
In ethyl triethoxy silicane alkane and bi-component addition type silica gel, it is prepared for hydrophobic antifreeze viscous corrosion inhibition coating, it will by the way of spraying
Coating is applied over fan blade surface, coarse since silica gel-epoxy binary system split-phase causes Coating Surface Roughness to increase
The increase of degree improves the contact angle of coating surface, obtains hydrophobic antifreeze viscous corrosion inhibiting coating；
Further, surface modifier is odium stearate in step (1).
Further, concentration of hydrazine hydrate is 70-80% in step (2), and benzotriazole concentration of aqueous solution is 0.05-
0.1mol/L。
Further, epoxy resin is epoxy resin E51 in step (3)；Bi-component addition type silica gel refers to E642A/
The mass ratio of E642B silica gel is A:B=1:1；Mixed solvent is dimethylbenzene, petroleum ether 2:1 in mass ratio preparation；Wet dispersion
Agent is Ricinate 110；Levelling agent is levelling agent 354.
Further, the pressure of compressed air is 0.5-0.7MPa in step (3), gun slot and wind-driven generator surface away from
From for 15-25cm, movement speed is about 1-3cm/s when spraying, and the spraying number of plies is 2 layers, coating layer thickness 0.06-0.08mm.
The present invention has the advantage that compared with prior art
It (1) the use of odium stearate is that modifying agent is modified to calcium sulfate crystal whiskers, nano silica progress surface, prepared by sodium ion
Whisker can be entered in the process, modifying agent mainly exists in the form of chemisorption on whisker surface, and with a small amount of physical absorption
Hydrophobic layer, modified hydrophobic effect is good, be spiked into epoxy resin and prepare hydrophobic antifreeze stick coating, by spraying can improve wind
The hydrophobic antifreeze sticky energy of machine blade.
Mechanism of modification analysis: in calcium sulfate crystal whiskers and the ethanol solution of nano silica, nano silica
There are a small amount of Ca with whisker surface2+, the anion of surface modifier migrates to nano silica and whisker surface, and
Nano silica and whisker surface generate chemisorption；It is adsorbed on the modifying agent anion on nano silica and whisker surface
With Ca in nano silica and whisker2+Complex reaction occurs, generate the lesser complex of solubility product and is deposited on nanometer
Silica and whisker surface, in the Ca close to nano silica and whisker surface one end2+Match since chemical bond connects
The hydrophilic radical of position compound, while hydrophobic grouping makes nano silica and whisker show hydrophobicity towards outside；With
The increase of surface modifier dosage, more and more complexes are gradually deposited at nanometer due to the influence of chemisorption
Silica and whisker surface form matching for monolayer by the mutual winding between hydrocarbon chain molecule long in surface modifier
Position compound film；After monolayer complex film is formed, complex reaction constantly carries out making excessive surface modified
Agent ion continues, long hydrocarbon chain intermolecular association generation physical absorption close to nano silica and whisker surface.
(2) it first passes through and redox graphene-sodium taurocholate composite suspension liquid is obtained using reducing agent hydrazine hydrate reduction, point
It dissipates property and stability is excellent, sodium taurocholate is adsorbed on redox graphene by hydrogen bond action and strong Van der Waals force, due to reduction
Graphene oxide-sodium taurocholate lamellar structure plugs the micropore and redox graphene-cholic acid of epoxy resin well
Sodium good dispersibility in the epoxy；Benzotriazole is a kind of important chemical products, in terms of metal rust preventing, inhibition
There is important application, institute's nitrogen atom has very strong electron-withdrawing ability, is easy to be bonded with the oxygen-containing functional group on graphene oxide；
Benzotriazole has more stable structure compared with sodium benzoate, and corrosion inhibiter passes through N, O atom and the formation of copper surface respectively and matches
Position key, the coordinate bond wherein generated between benzoate anion and copper is more stable, and benzotriazole then mainly passes through physical absorption
It is covered on metal surface, corrosion inhibiter passes through physical-chemical and makes the area contacted between the surface Cu and corrosive medium by way of depositing
Reduce, to improve inhibition efficiency, embodies certain synergistic effect；Compound corrosion inhibitor addition significantly improves epoxy resin painting
The corrosion protection performance of layer, inhibitor efficiency are high.
(3) by by the modified calcium sulfate crystal whiskers-nano silica in surface, compound corrosion inhibitor be added to epoxy resin,
In heptadecafluorodecyl triethoxysilane and bi-component addition type silica gel, it is prepared for hydrophobic antifreeze viscous corrosion inhibition coating, using spraying
Mode coating is applied over fan blade surface, since silica gel-epoxy binary system split-phase leads to Coating Surface Roughness
Increase, the increase of roughness improves the contact angle of coating surface, obtains hydrophobic antifreeze viscous corrosion inhibiting coating.
Specific embodiment
Embodiment 1
A kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade, which is characterized in that include the following steps, following raw materials
By weight:
(1) calcium sulfate crystal whiskers-nano silica surface is modified:
0.16 part of surface modifier and 15 parts of dehydrated alcohol mixed dissolutions is uniform, 2 parts of calcium sulfate crystal whiskers, 2 parts of nanometers two are added
Silica, in 90 DEG C of stirred in water bath 15min, filtering is dried in vacuo to obtain the modified calcium sulfate crystal whiskers-nanometer in surface at 70 DEG C
Silica；
Wherein, surface modifier is odium stearate；
(2) preparation of compound corrosion inhibitor:
0.05 part of graphene oxide and 0.1 part of sodium taurocholate are mixed, after 50 parts of deionized water ultrasonic disperses are added, are added 0.02 part
Hydrazine hydrate, reacts to obtain suspension at 80 DEG C, is slowly added to 1 part of benzotriazole aqueous solution thereto and 1 part of sodium benzoate is mixed
It is even, it stands, remove supernatant, centrifuge separation, washing obtain compound corrosion inhibitor；
Wherein, concentration of hydrazine hydrate 70%, benzotriazole concentration of aqueous solution are 0.05mol/L；
(3) spraying of fan blade is modified:
By the modified calcium sulfate crystal whiskers-nano silica in gained surface in 80 parts of epoxy resin, (1), 0.8 part of 17 fluorine decyl
Triethoxysilane is uniformly mixed, and is added gained compound corrosion inhibitor in 9 parts of bi-component addition type silica gel and (2) and is mixed well, adds
Enter 16 parts of mixed solvents, 0.8 part of Ricinate, with dispersion machine disperse 30min after high speed grinding 1h, be added 1.6 parts of levelling agents,
8 parts of curing agent, high speed grinding 10min filter to obtain hydrophobic antifreeze viscous corrosion inhibition coating, by the painting by the way of compressed air spraying
Material is applied over fan blade surface, and hydrophobic antifreeze viscous corrosion inhibiting coating is made in room temperature curing 3h；
Wherein, epoxy resin is epoxy resin E51；Bi-component addition type silica gel refers to that the mass ratio of E642A/E642B silica gel is
A:B=1:1；Mixed solvent is dimethylbenzene, petroleum ether 2:1 in mass ratio preparation；Ricinate is Ricinate 110；Stream
Flat agent is levelling agent 354；
The pressure of compressed air is 0.5MPa, and gun slot and wind-driven generator surface distance are 15cm, and movement speed is about when spraying
For 1cm/s, spraying the number of plies is 2 layers, coating layer thickness 0.06mm.
Embodiment 2
A kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade, which is characterized in that include the following steps, following raw materials
By weight:
(1) calcium sulfate crystal whiskers-nano silica surface is modified:
0.24 part of surface modifier and 20 parts of dehydrated alcohol mixed dissolutions is uniform, 3 parts of calcium sulfate crystal whiskers, 3 parts of nanometers two are added
Silica, in 95 DEG C of stirred in water bath 25min, filtering is dried in vacuo to obtain the modified calcium sulfate crystal whiskers-nanometer in surface at 75 DEG C
Silica；
Wherein, surface modifier is odium stearate；
(2) preparation of compound corrosion inhibitor:
0.1 part of graphene oxide and 0.2 part of sodium taurocholate are mixed, after 100 parts of deionized water ultrasonic disperses are added, are added 0.04 part
Hydrazine hydrate, reacts to obtain suspension at 85 DEG C, is slowly added to 2 parts of benzotriazole aqueous solutions thereto and 2 parts of sodium benzoates are mixed
It is even, it stands, remove supernatant, centrifuge separation, washing obtain compound corrosion inhibitor；
Wherein, concentration of hydrazine hydrate 80%, benzotriazole concentration of aqueous solution are 0.1mol/L；
(3) spraying of fan blade is modified:
By the modified calcium sulfate crystal whiskers-nano silica in gained surface in 100 parts of epoxy resin, (1), 1 part of 17 fluorine decyl
Triethoxysilane is uniformly mixed, and is added gained compound corrosion inhibitor in 15 parts of bi-component addition type silica gel and (2) and is mixed well, adds
Enter 20 parts of mixed solvents, 1 part of Ricinate, with high speed grinding 2h after dispersion machine dispersion 50min, 2 parts of levelling agents, 10 parts are added
Curing agent, high speed grinding 20min filter to obtain hydrophobic antifreeze viscous corrosion inhibition coating, by the coating by the way of compressed air spraying
It is applied over fan blade surface, hydrophobic antifreeze viscous corrosion inhibiting coating is made in room temperature curing 4h；
Wherein, epoxy resin is epoxy resin E51；Bi-component addition type silica gel refers to that the mass ratio of E642A/E642B silica gel is
A:B=1:1；Mixed solvent is dimethylbenzene, petroleum ether 2:1 in mass ratio preparation；Ricinate is Ricinate 110；Stream
Flat agent is levelling agent 354；
The pressure of compressed air is 0.7MPa, and gun slot and wind-driven generator surface distance are 25cm, and movement speed is about when spraying
For 3cm/s, spraying the number of plies is 2 layers, coating layer thickness 0.08mm.
Comparative example 1
This comparative example 1 compared with Example 1, does not carry out surface to calcium sulfate crystal whiskers-nano silica in step (1)
Modified, method and step in addition to this is all the same.
Comparative example 2
This comparative example 2 compared with Example 2, is not added in step (3) using compound corrosion inhibitor, method step in addition to this
It is rapid all the same.
Fan blade of the control group without any modification
In order to compare the performance prepared by the present invention for spraying modified wind blade, above-described embodiment 1, embodiment 2, comparison are implemented
Example 1,2 method of comparative example corresponding obtained modified fan blade and control group are corresponding without any modification
Blank fan blade carries out performance detection according to professional standard, and specific correlation data is as shown in table 1 below:
Fan blade used in the embodiment of the present application is what Anhui state produced at downwind wind power Co., Ltd；
Coating adhesion test is carried out according to method as defined in GB/T 5210-2006 9.4.3；
Influence to contact angle on surface of coating: using the contact angle of Drop Shape Analyzer measurement coating, when test, by blower leaf
Piece coating sample is entirely placed on sample stage, makees test fluid with deionized water, by water droplet in coating surface, to water droplet in coating
After surface is steady, image is captured immediately, is made tangent line and is read contact angle degree；The contact angle size of coating can reflect the table of coating
The height of face energy；
The influence of viscosity energy antifreeze to coating: the antifreeze viscosity energy in order to study antifreeze adhesive coating layer is carried out with tangential stripping method
Freeze viscous force test, tested with tangential stripping method, the icing intensity of tangential stripping method measurement material surface be at present compared at
Test block by sealing is tipped upside down on coating surface, and inject suitable water thereto by ripe and approved means of testing,
40 are freezed in the environment of being placed in -30 DEG C of machine of programmable constant temperature and moisture test
Minute, apply horizontal tangential pulling force after sample is taken out, the registration of tensiometer when record ice and coating are just detached from；Inhibition
Property: fan blade coating is impregnated for 24 hours in 3.5%NaCl solution, observes optical surface image,
Obtain inhibitor efficiency；
Table 1
There is excellent hydrophobic antifreeze viscosity energy and corrosion inhibition according to the modified fan blade of present invention method spraying,
Fan blade coating is not less than -30 DEG C in temperature, and the time is within 40 minutes after starting to freeze, at this point, coating has preferably
Deicing effect；Coating adhesion is 1 grade, is suitble to the requirement and use environment of fan blade；
Surface is not carried out to calcium sulfate crystal whiskers-nano silica in comparative example 1 to be modified, and leads to fan blade coating
Contact angle becomes smaller, Freezing adhesive strength increases, but the blank fan blade still better than control group without any modification is thin
Aqueous energy and antifreeze sticky energy；The inhibition for leading to fan blade coating using compound corrosion inhibitor is not added in comparative example 2
Efficiency reduces, but the corrosion inhibition of the blank fan blade still better than control group without any modification.
Claims (5)
1. a kind of spraying method of modifying of hydrophobic antifreeze viscous inhibition fan blade, which is characterized in that include the following steps, Xia Shuyuan
Expect by weight:
Calcium sulfate crystal whiskers-nano silica surface is modified:
0.16-0.24 parts of surface modifiers and 15-20 parts of dehydrated alcohol mixed dissolutions are uniform, 2-3 parts of calcium sulfate crystal whiskers of addition,
2-3 parts of nano silicas, in 90-95 DEG C of stirred in water bath 15-25min, filtering is dried in vacuo to obtain surface at 70-75 DEG C
Modified calcium sulfate crystal whiskers-nano silica；
The preparation of compound corrosion inhibitor:
0.05-0.1 parts of graphene oxides and 0.1-0.2 parts of sodium taurocholates are mixed, 50-100 parts of deionized water ultrasonic disperses are added
Afterwards, 0.02-0.04 parts of hydrazine hydrates are added, suspension is reacted to obtain at 80-85 DEG C, is slowly added to 1-2 parts of three nitrogen of benzo thereto
Azoles aqueous solution and 1-2 parts of sodium benzoates mix, and stand, remove supernatant, centrifuge separation, washing obtain compound corrosion inhibitor；
(3) spraying of fan blade is modified:
By the modified calcium sulfate crystal whiskers-nano silica in gained surface in 80-100 parts of epoxy resin, (1), 0.8-1 part 17
Fluorine ruthenium triethoxysilane is uniformly mixed, and is added gained compound corrosion inhibitor in 9-15 parts of bi-component addition type silica gel and (2) and is filled
Divide and mix, 16-20 parts of mixed solvents, 0.8-1 parts of Ricinates are added, with high speed grinding 1- after dispersion machine dispersion 30-50min
1.6-2 parts of levelling agents, 8-10 parts of curing agent are added in 2h, and high speed grinding 10-20min filters to obtain hydrophobic antifreeze viscous corrosion inhibition coating,
The coating is applied over fan blade surface by the way of compressed air spraying, room temperature curing 3-4h is made hydrophobic antifreeze viscous
Corrosion inhibiting coating.
2. the spraying method of modifying of the hydrophobic antifreeze viscous inhibition fan blade of one kind according to claim 1, which is characterized in that
Surface modifier is odium stearate in step (1).
3. the spraying method of modifying of the hydrophobic antifreeze viscous inhibition fan blade of one kind according to claim 1, which is characterized in that
Concentration of hydrazine hydrate is 70-80% in step (2), and benzotriazole concentration of aqueous solution is 0.05-0.1mol/L.
4. the spraying method of modifying of the hydrophobic antifreeze viscous inhibition fan blade of one kind according to claim 1, which is characterized in that
Epoxy resin is epoxy resin E51 in step (3)；Bi-component addition type silica gel refers to that the mass ratio of E642A/E642B silica gel is
A:B=1:1；Mixed solvent is dimethylbenzene, petroleum ether 2:1 in mass ratio preparation；Ricinate is Ricinate 110；Stream
Flat agent is levelling agent 354.
5. the spraying method of modifying of the hydrophobic antifreeze viscous inhibition fan blade of one kind according to claim 1, which is characterized in that
The pressure of compressed air is 0.5-0.7MPa in step (3), and gun slot and wind-driven generator surface distance are 15-25cm, spraying
When movement speed be about 1-3cm/s, spraying the number of plies be 2 layers, coating layer thickness 0.06-0.08mm.
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