CN109306225A - A kind of high adhesion force super hydrophobic coating and its preparation method and application - Google Patents
A kind of high adhesion force super hydrophobic coating and its preparation method and application Download PDFInfo
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- CN109306225A CN109306225A CN201810969493.8A CN201810969493A CN109306225A CN 109306225 A CN109306225 A CN 109306225A CN 201810969493 A CN201810969493 A CN 201810969493A CN 109306225 A CN109306225 A CN 109306225A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a kind of high adhesion force super hydrophobic coatings and its preparation method and application, the coating includes the raw material of following parts by weight: 0.8-1.2 parts of epoxy resin, 0.25-0.6 parts of curing agent, 10-20 parts of solvent, 0.6-5 parts of silane coupler modified nano silicon dioxide sol, 0.5-5 parts of nano-titanium dioxide；Preparation method includes: that epoxy resin and curing agent are dissolved in solvent, stirs, adds modified silicon dioxide sol and nano-titanium dioxide, be stirred at room temperature to obtain the final product；The adhesive force of gained coating is national standard zero level, and pencil hardness is greater than national standard H grades, and hydrophobic contact angle is greater than 150 °.The present invention passes through modified silicon dioxide sol and nano-titanium dioxide modified synergic, the multiple dimensioned coarse structure of coating surface is moulded, hydrophobic performance is excellent and stablizes, while having both good high temperature resistance, ageing-resistant performance and mechanical performance, preparation method is simple, has a extensive future.
Description
Technical field
The present invention relates to technical field of paint preparation, more particularly to a kind of high adhesion force super hydrophobic coating and its system
Preparation Method and application.
Background technique
Super-hydrophobic automatic cleaning surface, which refers to, is greater than 150 ° and surface of the roll angle less than 10 ° with the contact angle of water droplet, has
The material of super hydrophobic surface has extensive practical application in industrial and agricultural production and daily life, such as preventing for glass surface
Mist, the anti-icing of ultra-high-tension power transmission line, automatically cleaning construction material, the anti-corrosion of submerged structure and sail body, fabric it is antifouling and micro-
Fluid transport etc..
In recent years, with the further investigation to super-hydrophobic coat, the preparation method of super-hydrophobic bionic coating emerges one after another, this
Outside, it is unfolded about the research of the preparation method of super-hydrophobic coat mainly around following two points: is on the one hand how to mould solid table
On the other hand the multiple dimensioned coarse structure in face is then how to reduce the surface energy of the surface of solids.
So far, existing due to many although there are many material system of super-hydrophobic bionic coating and preparation method
The hydrophobicity of some super hydrophobic coatings and generally not good enough in the adhesive force of substrate surface, and preparation process is complicated；In addition, scene fortune
Row experience have shown that, the problems such as existing super hydrophobic coating is easily lost there is also bad mechanical property and hydrophobicity, comprehensive performance needs
It further increases.
In conclusion, by selecting suitable material system, improving preparation process how on existing Research foundation, mentioning
For a kind of preparation method is simple, technique is controllable, low in cost and have both excellent hydrophobic performance, adhesive force, mechanical strength and resistance to
The super hydrophobic coating and preparation method thereof of performance is waited, there is important theoretical and practical significance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of high adhesion force super hydrophobic coating and preparation method thereof and answer
With.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of high adhesion force super hydrophobic coating is provided according to an aspect of the present invention, the raw material including following parts by weight:
0.8-1.2 parts of epoxy resin, 0.25-0.6 parts of curing agent, 10-20 parts of solvent, modified silicon dioxide sol 0.6-5
Part, 0.5-5 parts of nano-titanium dioxide.
Wherein, the modified silicon dioxide sol is the silane coupler modified nano silica of partial size 10-150nm
Colloidal sol, the partial size of the nano-titanium dioxide are 10-200nm.
In the above-mentioned technical solutions, the partial size of the modified silicon dioxide sol is 25-80nm.
Preferably, in the above-mentioned technical solutions, the solid content of the modified silicon dioxide sol is 5-50%.
Preferably, in the above-mentioned technical solutions, the solvent of the modified silicon dioxide sol is toluene, dimethylbenzene and first and second
One of ketone.
Further, in the above-mentioned technical solutions, the partial size of the nano-titanium dioxide is 20-120nm.
Still further, in the above-mentioned technical solutions, the curing agent is ethylenediamine, m-phenylene diamine (MPD), T31 curing agent, 650
One of curing agent and 593 curing agent are a variety of.
In the above-mentioned technical solutions, the epoxy resin is one of E20, E44 and E51 or a variety of.
Preferably, in the above-mentioned technical solutions, the solvent is acetone, methyl ethyl ketone, toluene, dimethylbenzene, ethyl acetate, second
One of acid butyl ester is a variety of.
In the above-mentioned technical solutions, the high adhesion force super hydrophobic coating includes the raw material of following parts by weight:
0.85-1.0 parts of epoxy resin, 0.35-0.42 parts of curing agent, 15-17.5 parts of solvent, modified silicon dioxide sol
1.8-2.0 part, 2.4-2.6 parts of nano-titanium dioxide.
Wherein, the epoxy resin is made of 25-35%E20,20-28%E44 and 37-55%E51 by mass percentage,
The curing agent is m-phenylene diamine (MPD) or 650 curing agent, and the modified silicon dioxide sol is solid content 28-35% and partial size 30-
The silane coupler modified nano silicon dioxide sol of 55nm, the partial size of the nano-titanium dioxide are 25-55nm.
Further, in the above-mentioned technical solutions, the modified silicon dioxide sol the preparation method is as follows: with positive silicic acid
Ethyl ester is silicon source, is added in methanol, and ammonium hydroxide is then added as catalyst, stirs evenly, the nanometer two of surface hydroxyl is made
Silica sol；It is eventually adding silane coupling agent to be modified, obtains modified silicon dioxide sol.
A kind of preparation method of above-mentioned super hydrophobic coating is provided according to a further aspect of the invention, comprising:
S1, epoxy resin and curing agent are dissolved in solvent according to the ratio, the epoxy resin that crosslinking is made is stirred at room temperature
Solution；
S2, the ring that modified silicon dioxide sol and nano-titanium dioxide are added to crosslinking obtained in step S1 in proportion
In oxygen resin solution, it is stirred at room temperature to obtain the final product.
In the above-mentioned technical solutions, in step S2, the mixing time is 90-120min.
Another aspect provides a kind of high adhesion force super-hydrophobic coating material according to the present invention, and the high adhesion force is super-hydrophobic
Coating material is made of above-mentioned coating or above-mentioned preparation method, and the adhesive force of the coating is national standard zero level, and pencil hardness is big
In H grades of national standard, hydrophobic contact angle is greater than 150 °.
Advantages of the present invention:
(1) high adhesion force super hydrophobic coating provided by the present invention using through silane coupler modified hydrophobicity by receiving
Rice silicon dioxide gel and nano-titanium dioxide modified synergic epoxy resin, the hydrophobic performance of obtained coating material is excellent,
And performance is stablized, the adhesive force with higher especially between a variety of substrates, while having both good high temperature resistance, resistance to old
Change performance and mechanical performance, comprehensive performance are substantially better than epoxy coating；
(2) preparation method of high adhesion force super hydrophobic coating provided by the present invention passes through using through silane coupler modified
Hydrophobic nano-silica colloidal sol and nano-titanium dioxide collaboration mould the multiple dimensioned coarse of super-hydrophobic coating material surface
Structure substantially increases the hydrophobicity on coating material surface, further, since nano-titanium dioxide surface hydroxyl is more, it may
Water suction, and this disadvantage then can be just overcome through silane coupler modified hydrophobic nano-silica colloidal sol, moreover it is possible to increase
Add its super-hydrophobic stability, further increases its self-cleaning ability；
(3) the preparation method condition of high adhesion force super hydrophobic coating provided by the present invention is simple, and technique is controllable, required to set
Standby is common device, and used raw material is easy to get and cheap, high production efficiency, is suitble to scale industrial production, and make
Adhesive force with higher between the coating and a variety of substrates obtained, the excellent combination property of the coating coated, application prospect
Wide, theoretical and practical significance is great.
Specific embodiment
Combined with specific embodiments below, specific embodiments of the present invention will be described in further detail.
Following embodiment is only used for further illustrating the contents of the present invention, should not be construed as limiting the invention.Not
In the case where spirit of that invention and essence, to modifications or substitutions made by the method for the present invention, step or condition, this is belonged to
The range of invention.
Unless otherwise specified, experiment reagent used in the embodiment of the present invention and material etc. are commercially available.
If not particularly pointing out, technological means used in the embodiment of the present invention is well known to the skilled person normal
Rule means.
Embodiment 1
The embodiment of the invention provides a kind of high adhesion force super hydrophobic coating, the raw material comprising following parts by weight:
1.05 parts of epoxy resin, 0.35 part of curing agent, 15 parts of solvent, 2.8 parts of modified silicon dioxide sol, nanometer titanium dioxide
2.5 parts of titanium；
Specifically, the epoxy resin is E44, and the curing agent is T31 curing agent, and the solvent is dimethylbenzene, described
Modified silicon dioxide sol is solid content 5-50% and the silane coupler modified nano silica of partial size 25-80nm is molten
Glue, the partial size of the nano-titanium dioxide are 20-120nm.
The preparation method of above-mentioned high adhesion force super hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in two
In toluene solvant, under room temperature, 90min is stirred, the epoxy resin solution of crosslinking is made；
S2, modified silicon dioxide sol and nano-titanium dioxide are weighed respectively according to the above ratio, is added in step S1 and makes
In the epoxy resin solution of the crosslinking obtained, 110min, high adhesion force super hydrophobic coating is stirred at room temperature.
Embodiment 2
The embodiment of the invention provides a kind of high adhesion force super hydrophobic coating, the raw material comprising following parts by weight:
0.95 part of epoxy resin, 0.35 part of curing agent, 15 parts of solvent, 2.5 parts of modified silicon dioxide sol, nanometer titanium dioxide
2.2 parts of titanium；
Specifically, the epoxy resin is E51, and the curing agent is 650 curing agent, and the solvent is acetone, described to change
Property silicon dioxide gel be partial size 10-150nm silane coupler modified nano silicon dioxide sol, the nanometer titanium dioxide
The partial size of titanium is 10-200nm.
The preparation method of above-mentioned high adhesion force super hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in third
In ketone solvent, under room temperature, 40min is stirred, the epoxy resin solution of crosslinking is made；
S2, modified silicon dioxide sol and nano-titanium dioxide are weighed respectively according to the above ratio, is added in step S1 and makes
In the epoxy resin solution of the crosslinking obtained, 85min is stirred at room temperature to get high adhesion force super hydrophobic coating.
Embodiment 3
The embodiment of the invention provides a kind of high adhesion force super hydrophobic coating, the raw material comprising following parts by weight:
0.92 part of epoxy resin, 0.38 part of curing agent, 16.5 parts of solvent, 1.92 parts of modified silicon dioxide sol, nanometer two
2.48 parts of titanium oxide；
Wherein, the epoxy resin is made of 28%E20,25.5%E44 and 46.5%E51 by mass percentage, described
Curing agent is m-phenylene diamine (MPD) or 650 curing agent, and the solvent is ethyl acetate, and the modified silicon dioxide sol is solid content
The silane coupler modified nano silicon dioxide sol of 28-35% and partial size 30-55nm, the partial size of the nano-titanium dioxide
For 25-55nm.
The preparation method of above-mentioned high adhesion force super hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in second
In acetoacetic ester solvent, under room temperature, 100min is stirred, the epoxy resin solution of crosslinking is made；
S2, modified silicon dioxide sol and nano-titanium dioxide are weighed respectively according to the above ratio, is added in step S1 and makes
In the epoxy resin solution of the crosslinking obtained, 100min, high adhesion force super hydrophobic coating is stirred at room temperature.
Comparative example 1
Comparative example of the present invention provides a kind of coating, the raw material comprising following parts by weight:
0.92 part of epoxy resin, 0.38 part of curing agent, 16.5 parts of solvent.
Wherein, the epoxy resin is made of 28%E20,25.5%E44 and 46.5%E51 by mass percentage,
The curing agent is m-phenylene diamine (MPD) or 650 curing agent, and the solvent is ethyl acetate.
The preparation method of above-mentioned coating includes: to weigh epoxy resin, curing agent and solvent respectively according to the above ratio, and by ring
Oxygen resin and curing agent are dissolved in solvent, under room temperature, stir 80min to get.
Comparative example 2
Comparative example of the present invention provides a kind of hydrophobic coating, the raw material comprising following parts by weight:
0.95 part of epoxy resin, 0.35 part of curing agent, 15 parts of solvent, 2.5 parts of modified silicon dioxide sol.
Specifically, the epoxy resin is E51, and the curing agent is 650 curing agent, and the solvent is acetone, described to change
Property silicon dioxide gel be partial size 10-150nm silane coupler modified nano silicon dioxide sol.
The preparation method of above-mentioned hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in third
In ketone solvent, under room temperature, 55min is stirred, the epoxy resin solution of crosslinking is made；
S2, modified silicon dioxide sol is weighed according to the above ratio, be added to the epoxy resin of crosslinking obtained in step S1
In solution, be stirred at room temperature 120min to get.
Comparative example 3
Comparative example of the present invention provides a kind of hydrophobic coating, the raw material comprising following parts by weight:
0.95 part of epoxy resin, 0.35 part of curing agent, 15 parts of solvent, 2.2 parts of nano-titanium dioxide；
Specifically, the epoxy resin is E51, and the curing agent is 650 curing agent, and the solvent is acetone, described to receive
The partial size of rice titanium dioxide is 10-200nm.
The preparation method of above-mentioned hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in third
In ketone solvent, under room temperature, 50min is stirred, the epoxy resin solution of crosslinking is made；
S2, nano-titanium dioxide is weighed according to the above ratio, be added to the epoxy resin solution of crosslinking obtained in step S1
In, be stirred at room temperature 85min to get.
Comparative example 4
Comparative example of the present invention provides a kind of high adhesion force hydrophobic coating, the raw material comprising following parts by weight:
1.05 parts of epoxy resin, 0.35 part of curing agent, 15 parts of solvent, 0.25 part of modified silicon dioxide sol, nano-silica
Change 2.8 parts of titanium；
Specifically, the epoxy resin is E44, and the curing agent is T31 curing agent, and the solvent is dimethylbenzene, described
Modified silicon dioxide sol is solid content 5-50% and the silane coupler modified nano silica of partial size 25-80nm is molten
Glue, the partial size of the nano-titanium dioxide are 20-120nm.
The preparation method of above-mentioned high adhesion force hydrophobic coating the following steps are included:
S1, epoxy resin, curing agent and solvent are weighed respectively according to the above ratio, and epoxy resin and curing agent is dissolved in two
In toluene solvant, under room temperature, 90min is stirred, the epoxy resin solution of crosslinking is made；
S2, modified silicon dioxide sol and nano-titanium dioxide are weighed respectively according to the above ratio, is added in step S1 and makes
In the epoxy resin solution of the crosslinking obtained, 110min is stirred at room temperature to get high adhesion force hydrophobic coating is arrived.
Meanwhile by applying coating made from the various embodiments described above and comparative example on different substrate, and test its performance.
Referring to standard GB/T/T 9286-1998 " frame of paint and varnish paint film is tested ", tested using cross-hatching
Super-hydrophobic coating material is stated in glass plate, polycarbonate plate, polymethyl methacrylate plate, polyvinyl chloride panel, aluminium sheet, stainless steel
The adhesive force of plate surface.
Referring to standard GB/T/T 6739-2006 " paint and varnish pencil method measures hardness of paint film ", super-hydrophobic painting is tested
The pencil hardness of layer material.
Test water droplet super-hydrophobic coating material surface contact angle and coating material under 80 DEG C of high temperature aging 30 days
Contact angle afterwards.
Test result is as follows shown in table 1.
The performance test results of prepared coating in 1 embodiment of the present invention of table and comparative example
Comparative analysis above-described embodiment and comparative example results, it can be seen that obtained by comparative example 1 between coating and substrate
Adhesive force is preferable, and it is identical as embodiment 3 that adhesive force tests grade；But due to there is no that modified silicon dioxide sol and nanometer is added
Titanium dioxide, coating surface does not form multiple dimensioned coarse structure, therefore contact angle on surface of coating is smaller, and coating surface does not have
There is super-hydrophobicity；In addition, the addition of inorganic nano-particle can improve the hardness of coating to a certain extent.
Adhesive force is preferable between coating and substrate obtained by comparative example 3, and it is identical as embodiment 1 that adhesive force tests grade；
The addition of proper amount of nano-titanium dioxide can also mould the fine multiple dimensioned coarse structure of coating surface, coating surface
With super-hydrophobicity, but since there is the presence of great amount of hydroxy group on nano-titania particle surface, nano-titanium dioxide is substantially easy
Water suction, therefore persistently (after i.e. coating and drop contact time have been grown, coating surface can not lose gradually the super-hydrophobicity of coating surface
Go super-hydrophobicity)；In addition, the addition of nano-titanium dioxide can improve the hardness of coating to a certain extent.
Adhesive force is preferable between coating and substrate obtained by comparative example 4, and it is identical as embodiment 2 that adhesive force tests grade；
Alkyl-modified nano silica is only used only, coating surface essence can not be moulded since it is very good with epoxy resin compatibility
Thin multiple dimensioned coarse structure, in addition, nano-titanium dioxide is only used only, although can also mould fine multiple dimensioned of coating surface
Coarse structure, but because nano-titanium dioxide is substantially hygroscopic, the super-hydrophobicity of coating surface is not lasting, therefore, proper ratio
Modified manometer silicon dioxide colloidal sol and nano-titanium dioxide modified synergic epoxy resin best performance.Improved silica is molten
The additive amount of glue and nano-titanium dioxide is improper, it may appear that because super-hydrophobicity or hydrophilic is not enough not achieved in Coating Surface Roughness
Phenomena such as nano-titanium dioxide dosage of property excessively causes the super-hydrophobicity of coating surface not lasting.
To sum up, it can be seen that preparation method provided by the embodiment of the present invention is by utilizing hydrophobic nano-silica
With nano-titanium dioxide modified synergic epoxy resin, the hydrophobic performance of obtained coating material is excellent, and performance is stablized, and more
Adhesive force all with higher between kind substrate, while good high temperature resistance, ageing-resistant performance and mechanical performance are had both, it is comprehensive
Performance is substantially better than epoxy coating, moulds super-hydrophobic painting using hydrophobic nano-silica and nano-titanium dioxide collaboration
The multiple dimensioned coarse structure on layer material surface, substantially increases the hydrophobicity of coating material, in glass plate, polycarbonate plate, gathers
A variety of substrate surfaces such as methyl methacrylate plate, polyvinyl chloride panel, aluminium sheet, stainless steel plate adhesive force with higher (reaches 0
Grade standard), preferable hardness (be greater than H grade) and excellent hydrophobic performance (150 ° of contact angle >), meet the requirement of functionization, and
Under 80 DEG C of hot environments after aging 30 days, coating material still has super-hydrophobicity, therefore the super-hydrophobic coating material prepared
With good high temperature resistant and ageing-resistant performance, long service life；Simultaneously as nano-titanium dioxide surface hydroxyl is more, it can
It can absorb water, and the introducing of hydrophobic nano-silica not only can solve this problem, moreover it is possible to increase its super-hydrophobic stabilization
Property, further increase its self-cleaning ability.The method for preparing super-hydrophobic coat is suitable for industrial mass production, has strong
The big market competitiveness；Above-mentioned preparation method condition is simple, and technique is controllable, and required equipment is common device, used original
Material is easy to get and cheap, high production efficiency, is suitble to scale industrial production, and coating obtained is suitable for a variety of substrates, applies
The excellent combination property of the coating covered, has a extensive future, and theoretical and practical significance is great.
Finally, being not intended to limit the scope of the present invention the above is only preferred embodiment of the invention.It is all this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of high adhesion force super hydrophobic coating, which is characterized in that the raw material including following parts by weight:
It 0.8-1.2 parts of epoxy resin, 0.25-0.6 parts of curing agent, 10-20 parts of solvent, 0.6-5 parts of modified silicon dioxide sol, receives
0.5-5 parts of titanium dioxide of rice；
Wherein, the modified silicon dioxide sol is that the silane coupler modified nano silica of partial size 10-150nm is molten
Glue, the partial size of the nano-titanium dioxide are 10-200nm.
2. high adhesion force super hydrophobic coating according to claim 1, which is characterized in that
The partial size of the modified silicon dioxide sol is 25-80nm；
And/or the solid content of the modified silicon dioxide sol is 5-50%；
And/or the solvent of the modified silicon dioxide sol is one of toluene, dimethylbenzene and methyl ethyl ketone.
3. high adhesion force super hydrophobic coating according to claim 1 or 2, which is characterized in that the nano-titanium dioxide
Partial size is 20-120nm.
4. high adhesion force super hydrophobic coating according to claim 1-3, which is characterized in that the curing agent is second
One of diamines, m-phenylene diamine (MPD), T31 curing agent, 650 curing agent and 593 curing agent are a variety of.
5. high adhesion force super hydrophobic coating according to claim 1, which is characterized in that
The epoxy resin is one of E20, E44 and E51 or a variety of；
And/or the solvent is one of acetone, methyl ethyl ketone, toluene, dimethylbenzene, ethyl acetate, butyl acetate or a variety of.
6. high adhesion force super hydrophobic coating according to claim 1, which is characterized in that the raw material including following parts by weight:
0.85-1.0 parts of epoxy resin, 0.35-0.42 parts of curing agent, 15-17.5 parts of solvent, modified silicon dioxide sol 1.8-
2.0 parts, 2.4-2.6 parts of nano-titanium dioxide；
Wherein, the epoxy resin is made of 25-35%E20,20-28%E44 and 37-55%E51 by mass percentage, described
Curing agent is m-phenylene diamine (MPD) or 650 curing agent, and the modified silicon dioxide sol is solid content 28-35% and partial size 30-55nm
Silane coupler modified nano silicon dioxide sol, the partial size of the nano-titanium dioxide is 25-55nm.
7. high adhesion force super hydrophobic coating according to claim 1-6, which is characterized in that the modified titanium dioxide
Silica solution the preparation method is as follows: using ethyl orthosilicate as silicon source, be added in methanol, ammonium hydroxide be then added as catalyst, stirs
It mixes uniformly, the nano silicon dioxide sol of surface hydroxyl is made；It is eventually adding silane coupling agent to be modified, obtains modified two
Silica sol.
8. a kind of preparation method of such as described in any item high adhesion force super hydrophobic coatings of claim 1-7, which is characterized in that packet
It includes:
S1, epoxy resin and curing agent are dissolved in solvent according to the ratio, the epoxy resin solution that crosslinking is made is stirred at room temperature；
S2, the asphalt mixtures modified by epoxy resin that modified silicon dioxide sol and nano-titanium dioxide are added to crosslinking obtained in step S1 in proportion
In lipoprotein solution, it is stirred at room temperature to obtain the final product.
9. preparation method according to claim 8, which is characterized in that in step S2, the mixing time is 90-
120min。
10. a kind of high adhesion force super-hydrophobic coating material, which is characterized in that use the described in any item coating of claim 1-8
Or preparation method as claimed in claim 9 is made, the adhesive force of the coating is national standard zero level, and pencil hardness is greater than national standard H grades,
Hydrophobic contact angle is greater than 150 °.
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Application publication date: 20190205 |