CN208291091U - A kind of rearview mirror of rain-proof water adhesion - Google Patents
A kind of rearview mirror of rain-proof water adhesion Download PDFInfo
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- CN208291091U CN208291091U CN201820878655.2U CN201820878655U CN208291091U CN 208291091 U CN208291091 U CN 208291091U CN 201820878655 U CN201820878655 U CN 201820878655U CN 208291091 U CN208291091 U CN 208291091U
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Abstract
The utility model discloses a kind of rearview mirrors of rain-proof water adhesion, comprising: the eyeglass of rearview mirror, the front at least partly surface of the eyeglass coats hydrophobic coating, the hydrophobic coating includes the first hydrophobic layer and the second hydrophobic layer, on direction i.e. from reflecting optics front face surface to air, it is successively coated with the first hydrophobic layer and the second hydrophobic layer.After adopting the above technical scheme, hydrophobic coating contains bilayer hydrophobic coating in the utility model, after there is double-deck hydrophobic layer to be applied on rearview mirror of means of transportation this, raindrop fall in rear-view mirror on piece and will not adhere to, and accomplish that drop rain is non-sticky.The utility model uses this structure with bilayer hydrophobic layer, and super-hydrophobic effect is more preferable, applicability is wider.
Description
Technical field:
The utility model relates to rearview mirror product technical fields used for vehicle, refer in particular to a kind of backsight of rain-proof water adhesion
Mirror.
Background technique:
Rearview mirror on the vehicles is exposed to outside the vehicles, is very easy to adherency raindrop, dust, is caused rearview mirror
Sight it is unclear, very big puzzlement is especially caused to driver in the rainy day.There are many technologies, product or tips
Promote the problem of rainy day driving mirror does not see Chu.Common solution has following several:
1, the surface of rear view mirror lens is coated on perfumed soap, dish washing liquid, but this method duration is very short, usually passes through
Rainfall is crossed just without effect.
2, plastics rain eyebrow is installed on rearview mirror, raindrop are blocked by rain eyebrow, but rain eyebrow influences the integrated beauty of rearview mirror
It sees, still can also adhere to raindrop when raining heavily on the eyeglass of rearview mirror.
3, the hydrophobic coating for coating silicon fluoride type, although hydrophobic coating enables to raindrop to become hemispherical, view
Line clarity promotes amplitude very little, its advantage could be only embodied when raining heavily.
In addition, more and more vehicles are provided with rearview mirror electric heater unit in automobile market now, to low temperature defrosting, remove
Ice and demisting are very effective, but by way of heating evaporate raindrop to enhance the effect of rain-proof water adhesion and bad.To accelerate water
Pearl evaporation rate, the rearview mirror that electric heater unit has been arranged generally also are coated with hydrophilic coating in lens surface, make raindrop with more
Small contact angle is open and flat on eyeglass to be opened, and conducive to the disengagement area for increasing raindrop, accelerates to remove water speed.
Above-mentioned technology is not avoided that rearview mirror hangs raindrop.With the development of nano material technology, go out in the market in recent years
Showed a kind of spraying coating technique and product, the organic solvent comprising hydrophobic nano-particles be sprayed on eyeglass it is dry formed it is transparent
Super-hydrophobic coat.This super-hydrophobic coat may be implemented the non-sticky lotus leaf effect of drop rain really on common eyeglass, but
There is a problem in that: first, when raining heavily, raindrop impingemest coating is easily destroyed coating, and part is caused to hang raindrop；Second,
Hydrophilic rear-view mirror on piece, such as the rearview mirror of the eyeglass comprising electric heating and hydrophilic coating and certain new factory vehicles
On, this super-hydrophobic coat is easy to hang raindrop or durability substantially reduces.
In order to overcome the above problem, I proposes following technical scheme.
Utility model content:
Technical problem to be solved in the utility model is that overcome the deficiencies of the prior art and provide a kind of rainwater-proof viscous
Attached rearview mirror.
In order to solve the above-mentioned technical problem, the utility model uses following technical proposals: after a kind of rain-proof water adhesion
Visor includes: the eyeglass with rearview mirror, and the positive at least partly surface of the eyeglass is coated with hydrophobic coating, hydrophobic coating
Include the first hydrophobic layer and the second hydrophobic layer, on the direction on mirror front lens surface surface to air, it is hydrophobic to be successively coated with first
Layer and the second hydrophobic layer.
Furthermore, in above-mentioned technical proposal, first hydrophobic layer is not less than 20 ° to the contact angle of pure water, thickness
Degree is 0.5nm-10um.
Furthermore, in above-mentioned technical proposal, first hydrophobic layer is 30 ° -80 ° to the contact angle of pure water.
Furthermore, in above-mentioned technical proposal, second hydrophobic layer is not less than 150 ° to the contact angle of pure water.
Furthermore, in above-mentioned technical proposal, second hydrophobic layer is made of hydrophobic nano-particles, and particle
Partial size be less than 100nm.
Furthermore, in above-mentioned technical proposal, the visible light transmittance of first hydrophobic layer and the second hydrophobic layer
It is not less than 85%.
After adopting the above technical scheme, after the rearview mirror of the utility model is used for rearview mirror of means of transportation, have with
Down the utility model has the advantages that hydrophobic coating contains bilayer hydrophobic coating in the utility model, there is double-deck hydrophobic layer to be applied to friendship this
After on logical tool rearview mirror, raindrop fall in rear-view mirror on piece and will not adhere to, and accomplish that drop rain is non-sticky.The utility model is using this
Structure with bilayer hydrophobic layer, super-hydrophobic effect is more preferable, applicability is more preferable.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the operation principle schematic diagram of the utility model；
Fig. 3 is the operation principle schematic diagram of existing rearview mirror.
Specific embodiment:
The present invention will be further described with attached drawing combined with specific embodiments below.
The utility model is a kind of rearview mirror on the vehicles (such as automobile, motorcycle etc.), as shown in Figure 1,
The utility model includes: the eyeglass 1 and hydrophobic coating 2 of rearview mirror, and wherein hydrophobic coating 2 includes: the first hydrophobic layer 21 and second
Hydrophobic layer 22.
The surface nature of the eyeglass 1 of the rearview mirror determines rainwater in the adherency situation of rear-view mirror on piece.Generally
The hydrophobic and hydrophilic nmature of lens surface is assessed in the contact angle of lens surface with liquid.For conventional glass material backsight
Mirror eyeglass, since glass surface has been corroded, pure water contact angle is between 30-40 °.For the vehicle of certain new factory, after
Endoscopy glass surface is not corroded sufficiently also, and also in good hydrophily, pure water contact angle is lower than 30 °, even lower than
10°.In addition, being equipped with electric heating rearview mirror in more and more volume production vehicles in recent years, basic structure is: in rear-view mirror
The piece back side is bonded electric heater unit, coats hydrophilic coating, hydrophilic coating on rear view mirror lens front face surface at least partly surface
The surface layer contacted with air is atom or group with hydrophilic or even super hydrophilic ability (pure water contact angle is less than 10 °).Its work
Be as principle: electric heater unit be powered after generate heat eyeglass is heated, evaporation remove be attached to front lens surface ice,
Frost, mist and water droplet；Hydrophilic coating is coated in the front face surface (can also can coat completely with topical application) of eyeglass, so that rain
It is dropped in the water droplet for being easy to be expanded into large area on the surface of eyeglass, water droplet can be in the case where electric heater unit work
Faster speed volatilization.But, in the biggish situation of rainfall, the speed of electrified regulation evaporation raindrop is unable to catch up with raindrop adherency
Speed still can hang raindrop and influence sight, so the technical solution of this electric heating additional hydrophilic coating is to be not enough to thoroughly
Solve the problems, such as what rainy day driving mirror sight was not known.
In addition, the front face surface in eyeglass coats certain coatings that can change lens surface property, to change raindrop
In the adherency behavior of lens surface.Such as coating coupling agent containing fluoro alkyl-silane can increase lens surface pure water contact angle and may be up to
90 ° -108 °, raindrop presentation at this time is hemispherical to be adhered to lens surface, cannot tumble automatically；Such as coating is super-hydrophobic containing one layer
The coating of nanoparticle may make lens surface pure water contact angle to be up to 150 °, and raindrop tumble automatically, and drop rain is non-sticky.However, this
The single super-hydrophobic nano particle coating of kind has its apparent limitation, shows: first, on conventional mirror eyeglass,
It is easy greatly to be destroyed coating by raindrop impingemest in the rain, part hangs raindrop；Second, it is completely unsuitable for above-mentioned hydrophily rear view mirror lens
Surface.
So based on above explanation, the utility model hydrophobic coating 2 double-deck in the coating of 1 surface of eyeglass of rearview mirror,
It can enable common eyeglass 1 that can bear the impact of heavy rain raindrop in this way, improve service life；Simultaneously in hydrophilic 1 table of eyeglass
Face can not also adhere to raindrop, and drop rain is non-sticky.
The hydrophobic coating 2 includes: the first hydrophobic layer 21 and the second hydrophobic layer 22.First hydrophobic layer 21 is to pure
The contact angle of water is not less than 20 °, it is preferred that first hydrophobic layer 21 is 30 ° -80 ° to the contact angle of pure water.First is hydrophobic
Layer 21 with a thickness of 0.5nm-10um.Second hydrophobic layer 22 is not less than 150 ° to the contact angle of pure water.Second hydrophobic layer
22 are made of hydrophobic nano-particles, and the partial size of particle is less than 100nm.First hydrophobic layer 21 and the second hydrophobic layer 22
Visible light transmittance be not less than 85%.
The coating method of the first hydrophobic layer 21 and the second hydrophobic layer 22 is specifically described below.
The material of first hydrophobic coating 21 selects and coating method.
Following factor must be taken into consideration in the selection of first hydrophobic layer, 21 material:
1, hydrophobic ability.With medium hydrophobic ability, contact angle is required to exist with when this parameter measure of pure water contact angle
Between 20 ° -80 °, preferably between 30 ° -60 °.Contact angle is too low, and water droplet can not be prevented to expand from the fault location of the second hydrophobic layer 22
Exhibition；Contact angle is too high, and the hydrophobic nano-particles coating liquid in the second hydrophobic layer 22 can not be allowed in 21 surface spreading of the first hydrophobic layer
And uniform coated.
2, visible transparent.The transparent material of no visible absorption must be selected, to ensure not influence sight, it is desirable that visible
Light transmission rate is not less than 80%, and preferred visible transmission ratio is higher than 90%.
3, the stability of material preferably lasts for effective material between 1 month to 6 months.
4, other factors, including human safety, ease-to-operate, price etc..
The selection of the coating method of first hydrophobic layer 21 mainly considers ease-to-operate.The method of coating includes but unlimited
In: spraying, showering, dip-coating, wiping etc. are preferably sprayed and are wiped.Above-mentioned first hydrophobic layer, 21 material or its solution are coated in
It on rear view mirror lens 1, waits certain time to keep solution dry and curing reaction occurs, the waiting time is no more than 30 minutes, preferably
No more than 5 minutes.Finally extra coating material is wiped with dry towel or paper handkerchief and is removed, keeps rear view mirror lens completely bright.
The thickness of first hydrophobic layer 21 is mainly determined by coating method.Such as plated film liquid wiping backsight eyeglass 1 just
On the surface of face, after several minutes of dry solidification, then extra coating material wiping is removed with paper handkerchief and is only capable of leaving less than 100 nanometers
Thick coating material, such as tens nanometer or even theoretic throat only several nanometers of monolayer.And if using spraying, done
Dry cured method contains the equiatomic organic silicon coating of Si, C, H, O being formed on organic silicon sol coating backsight eyeglass 1,
Thickness can reach a few micrometers of even some tens of pm.
After considering above-mentioned requirements, the material candidate object that can be used as the first hydrophobic coating 21 is more, comprising: You Jicai
Material, inorganic material and organic/inorganic composite material.Candidate material includes but is not limited to: atoleine, palm oil, soybean oil, hydroxyl
Base silicone oil, methyltrimethoxysilane, propyl trimethoxy silicane, γ-(the third oxygen of 2,3- epoxy) propyl trimethoxy silicane,
γ-methacryloxypropyl trimethoxy silane, vinyltriethoxysilane, (the dioctylphyrophosphoric acid acyl of isopropyl three
Oxygroup) nano coating that is formed in 1 front face surface of eyeglass of titanate esters, three benzyl ester of aluminic acid, stearic acid etc. and its mixture is (preferably
Thickness is no more than 100nm) or what silane sol was formed in the front face surface of eyeglass 1 includes the equiatomic silicon of Si, C, H, O
Alkane coating (average thickness reaches a few micrometers).
After first hydrophobic layer 21 coats on eyeglass 1,1 entire surface of eyeglass can be made to be changed into table hydrophobic enough
Face, to promote the stability by molecular second hydrophobic layer 22 of nanoparticle.
The material of second hydrophobic coating 22 selects and coating method.
The second hydrophobic layer 22 is coated after completing the first hydrophobic layer 21 of coating.The main body of second hydrophobic layer 22 is surface
By the superfine nano particle (partial size < 100nm) that hydrophobization is modified, preferred nanoparticle is that fluorocarbon group or first are passed through in surface
The silicon oxide nanoparticle of base modification, initial size are less than 50nm；Common dispersion solvent includes alcohols, alcohol ethers, esters, alkane
Hydro carbons, ethers, ketone etc. and its mixture, preferred dispersion solvent are ethyl alcohol, isopropanol；Other auxiliary agents be may also contain with shape
At super-hydrophobic coat transparent and with certain binding force；The weight percent content of hydrophobic nano-particles in the solution is
0.1%-10%, preferably 0.5%-3%.
The production method that a kind of the second hydrophobic layer 22 with silicon oxide nanoparticle is provided below.It is hydrophobic SiO2 first
The preparation of nanoparticle.The methyl iso-butyl ketone (MIBK) of 50ml is dispersed in using 150 3g of gaseous oxidation silicon Aerosil of Ying Chuan company
In, the hexamethyldisilazane of 100ml is then added, 50 DEG C are stirred in nitrogen protection gas and is stirred 24 hours, second is then used
Ether wash particle and 5 minutes dry at 150 DEG C, obtains the hydrophobic SiO2 nanoparticle of methyl group modification, is dispersed in methyl
In isobutyl ketone.Then methyltriethoxysilane hydrolytic sol is prepared.The dense salt of 3ml is added in methyltriethoxysilane 15ml
Acid, 4.86ml water, 50ml dehydrated alcohol are sealed and are hydrolyzed 90 minutes at 60 DEG C.Then ammonium hydroxide is added in this colloidal sol to adjust
PH value 9.0 or so is added above-mentioned SiO2 nanoparticle and makes SiO2 solid content between 2%-3%, obtains super-hydrophobic coating liquid,
This coating liquid is just used as the second hydrophobic layer 22 in the utility model.It is sprayed on the first hydrophobic layer of rear view mirror lens 1
Behind 21 surfaces, drying is finished after room temperature 2 hours.The pure water contact angle of this second hydrophobic coating is up to 151 °, it is seen that light transmission
Than being up to 90%.
The coating method of second hydrophobic layer 22 includes but is not limited to spraying, showering, dip-coating and wiping, containing upper
The coating liquid for stating hydrophobic nano-particles and its dispersion solvent is covered on 21 surface of the first hydrophobic layer, and solvent can be in the first hydrophobic layer
21 surface spreading open forms leave hydrophobic nano-particles after dispersion solvent volatile dry and are covered on first at more uniform liquid level
31 surface of hydrophobic layer.Preferred coating method is spraying.
In conjunction with shown in Fig. 2, Fig. 3, the utility model and prior art working principle are compared, to the utility model into
Row further instruction.
Fig. 2 is the working principle of the utility model, and Fig. 3 is a kind of work of existing coated product using single layer of hydrophobic coating
Make schematic diagram.The front face surface of the eyeglass 4 of rearview mirror coats super-hydrophobic coat 41 in Fig. 3, its working principle is that surface is by dredging
In 4 surface alignment of eyeglass formation super-hydrophobic nano coating, (pure water contact angle is not less than 150 ° to the nanoparticle of water modification, and water droplet is straight
It connects and tumbles).But, it cannot play superhydrophobic characteristic when 4 surface of rear view mirror lens is hydrophily or be easy to be hit by raindrop
Break up bad, raindrop largely adhere to.Its failure mechanism is as shown in Figure 3.Super-hydrophobic nanoparticle hydrophobic coating 41 is applied directly to
On 4 surface of eyeglass, when raindrop 3 fall, contact with hydrophobic coating 41, if in the region that raindrop 3 are contacted with hydrophobic coating 41,
When nanoparticle arranges zero defect, is capable of 4 surface of eyeglass of completely obscured lower section in hydrophobic coating 41,3 appearance of raindrop is ball
Shape can be tumbled directly；But if in the region that raindrop 3 are contacted with hydrophobic coating 41, nanoparticle is arranged in hydrophobic coating 41
Defect, cannot completely obscured lower section 4 surface of eyeglass when, water droplet 3 may be contacted with lens surface 4.If 4 surface of eyeglass herein
Be it is hydrophilic, water droplet 3 is easy to be adsorbed and constantly extend along the interface on 4 surface of eyeglass and hydrophobic coating 41, eventually leads to rain
The hydrophobic coating 41 of drop adherency and large area is destroyed.
The utility model is directed to above-mentioned failure mechanism, proposes to use the coating structure comprising bilayer hydrophobic layer, in conjunction with Fig. 2 institute
Show, the utility model increases by the first hydrophobic layer 21 between 1 surface of eyeglass and the second hydrophobic layer 22, so that in the second hydrophobic layer 22
Rejected region raindrop 3 will not be spread penetrating, it is ensured that the second hydrophobic layer 22, which will not hang raindrop and improve, uses the longevity
Life.This structure can not only promote the service life of super-hydrophobic coat on conventional mirror, and heavy rain is avoided to wash away lower extension raindrop,
Also it is non-sticky that rain can be dripped in hydrophilic rear-view mirror on piece normal use.
In conclusion the utility model has the following beneficial effects: being applied due to containing bilayer hydrophobic on the eyeglass of rearview mirror
Layer, raindrop, which are fallen in, will not adhere to raindrop on rear view mirror lens 1, and it is non-sticky to be truly realized drop rain.
It certainly, is not to limit the utility model and implement the foregoing is merely specific embodiment of the utility model
Range, all equivalent change or modifications done according to structure, feature and principle described in present utility model application the scope of the patents, should all wrap
It includes in present utility model application the scope of the patents.
Claims (6)
1. a kind of rearview mirror of rain-proof water adhesion, the eyeglass (1) including rearview mirror, it is characterised in that: the eyeglass (1) is just
Face at least partly surface coating hydrophobic coating (2), hydrophobic coating (2) includes the first hydrophobic layer (21) and the second hydrophobic layer
(22), i.e., from eyeglass (1) to the direction of air, the first hydrophobic layer (21) and the second hydrophobic layer (22) are successively coated with.
2. a kind of rearview mirror of rain-proof water adhesion according to claim 1, it is characterised in that: first hydrophobic layer
(21) 20 ° are not less than to the contact angle of pure water, with a thickness of 0.5nm-10um.
3. a kind of rearview mirror of rain-proof water adhesion according to claim 2, it is characterised in that: first hydrophobic layer
It (21) is 30 ° -80 ° to the contact angle of pure water.
4. a kind of rearview mirror of rain-proof water adhesion according to claim 1, it is characterised in that: second hydrophobic layer
(22) 150 ° are not less than to the contact angle of pure water.
5. a kind of rearview mirror of rain-proof water adhesion according to claim 4, it is characterised in that: second hydrophobic layer
(22) it is made of hydrophobic nano-particles, and the partial size of particle is less than 100nm.
6. a kind of rearview mirror of rain-proof water adhesion described in any one of -5 according to claim 1, it is characterised in that: described
The visible light transmittance of first hydrophobic layer (21) and the second hydrophobic layer (22) is not less than 85%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820878655.2U CN208291091U (en) | 2018-06-07 | 2018-06-07 | A kind of rearview mirror of rain-proof water adhesion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820878655.2U CN208291091U (en) | 2018-06-07 | 2018-06-07 | A kind of rearview mirror of rain-proof water adhesion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108501813A (en) * | 2018-06-07 | 2018-09-07 | 东莞唯智美新材料科技有限公司 | A kind of rearview mirror of rain-proof water adhesion |
| CN110699668A (en) * | 2019-10-16 | 2020-01-17 | 湖北大学 | Composite coating body, preparation method and application thereof, and solar cell |
| CN112341897A (en) * | 2020-09-27 | 2021-02-09 | 鹰潭荣嘉集团医疗器械实业有限公司 | Preparation method of super-hydrophobic coating on inner surface of medical infusion apparatus |
-
2018
- 2018-06-07 CN CN201820878655.2U patent/CN208291091U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108501813A (en) * | 2018-06-07 | 2018-09-07 | 东莞唯智美新材料科技有限公司 | A kind of rearview mirror of rain-proof water adhesion |
| CN110699668A (en) * | 2019-10-16 | 2020-01-17 | 湖北大学 | Composite coating body, preparation method and application thereof, and solar cell |
| CN110699668B (en) * | 2019-10-16 | 2022-01-25 | 湖北大学 | Composite coating body, preparation method and application thereof, and solar cell |
| CN112341897A (en) * | 2020-09-27 | 2021-02-09 | 鹰潭荣嘉集团医疗器械实业有限公司 | Preparation method of super-hydrophobic coating on inner surface of medical infusion apparatus |
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