CN105585953B - A kind of preparation of long-acting lacquer painting water-repelling agent and its application method - Google Patents
A kind of preparation of long-acting lacquer painting water-repelling agent and its application method Download PDFInfo
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Abstract
The invention discloses a kind of preparation of long-acting lacquer painting water-repelling agent and its application method, belongs to lacquer painting processing hydrophobic coating technical field.The preparation method includes：1 10 parts of long chain organic silanes and 0.1 2 parts of acid catalysts are added in 80 95 parts of organic solvents, in 30 80 DEG C of 30min of return stirring 120, obtain mixed solution A；0.1 5 parts of short chain TMOSs and 0.1 5 parts of acid catalysts are added in 70 95 parts of organic solvents, 10 60min are stirred at room temperature, obtain mixed solution B；Before coating lacquer painting, by the mixed solution A and B according to volume ratio 2：1~1：1 is well mixed, and the long-acting lacquer painting water-repelling agent is made.Long-acting lacquer painting water-repelling agent prepared by the present invention forms firm hydrophobic film layer with lacquer painting by chemical bonds, and its low-surface-energy makes the globule, spot etc. be difficult to adhere to, and reaches self-cleaning purpose；And its method of preparation and use is simple, suitable for operational maintenance.
Description
Technical field
The present invention relates to lacquer painting to handle hydrophobic coating technical field, and it is hydrophobic to particularly relate to a kind of long-acting lacquer painting based on silane
The preparation of paint and its application method.
Background technology
Paint is decorating and protect the coating of article made of the raw materials such as iron oxide or resin.The lacquer painting of automobile is not
Vehicle body can be only protected, avoids vehicle body metal from suffering erosion, while makes car surface gloss beautiful.It is general on automobile finish at present
One layer of varnish can be covered, its main component is polyurethane resin or acrylic resin.Varnish face has certain hydrophobicity, but relatively
It is softer, easily there is scratch, spot etc., it is necessary to carry out periodic cleaning to surface of vehicle paint with safeguarding.Varnish table in use
Face can be over time extension varnish surface destroyed, glossiness can decline, and influence that vehicle body is attractive in appearance and the vehicle body life-span, Er Qie great
The cleaning process of amount can cause water resource pollution and waste.
Therefore, armor coated in automobile finish is very necessary.Lacquer painting maintenance in the market is big with cosmetics
Cause has three kinds：Wax, envelope glaze and plated film.The oxidizable spy with pollution environment be present due to the chemical property of itself in car wax and envelope glaze
Point, present time coating technique protection period are longer but expensive, it is important to which the operation of these three lacquer painting maintenance methods is all numerous
It is trivial time-consuming, be not suitable for being widely popularized.The hydrophobic technology of material surface is mainly used in glass baseplate at present, applied to car paint paint-based
The hydrophobic clean coating research of material is seldom, and main cause is that adhesion of the hydrophobic film layer on paint surface is inadequate, is easily destroyed.
Therefore a kind of focus that there is permanent hydrophobic self-cleaning and other effects surface of vehicle paint hydrophobic coating to be research is found.
The content of the invention
Have permanent hydrophobic self-cleaning and other effects long-acting lacquer painting hydrophobic the technical problem to be solved in the present invention is to provide a kind of
The preparation of agent and its application method, for improving the hydrophobic performance of automobile varnish layer.
In order to solve the above technical problems, the offer technical scheme of the present invention is as follows：
On the one hand, the present invention provides a kind of preparation method of long-acting lacquer painting water-repelling agent, including：
Step 1：1-10 parts long chain organic silanes and 0.1-2 part acid catalysts are added in 80-95 part organic solvents,
30-80 DEG C of return stirring 120-30min, obtains mixed solution A；
Step 2：0.1-5 part short chain TMOSs and 0.1-5 part acid catalysts, room are added in 70-95 part organic solvents
Temperature stirring 10-60min, obtains mixed solution B；
Step 3：Before coating lacquer painting, by mixed solution A and B according to volume ratio 2：1~1：1 ratio is well mixed, system
Obtain the long-acting lacquer painting water-repelling agent；
Wherein, the general structure of silane is represented by R (CH2)nSiX3；
The R of the long chain organic silanes is methyl, and n=11~20, X are one kind in chloro, methoxyl group, ethyoxyl；
The R of the short chain TMOS is amino, epoxy radicals, acryloyl group, one kind in γ-methylacryloyl or more
Kind, n=1~2, wherein X are one kind in methoxy or ethoxy.
Further, the long chain organic silanes be dodecyltrimethoxysilane, dodecyl triethoxysilane,
In dodecyltrichlorosilane, octadecyl trimethoxysilane, octadecyl trichlorosilane alkane, hexadecyl
One or more.
Preferably, the long chain organic silanes are dodecyltrimethoxysilane, one kind of octadecyl trichlorosilane alkane
Or two kinds；
Further, the short chain TMOS is γ-methacryloxypropyl trimethoxy silane, aminopropyl three
One or more in methoxy silane, aminopropyl triethoxysilane, γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane.
Preferably, the short chain TMOS is γ-methacryloxypropyl trimethoxy silane, aminopropyl front three
TMOS is one or two kinds of.
Further, the organic solvent is ethanol, methanol, isopropanol, ethyl acetate, one kind in n-hexane or more
Kind.
Further, the acid catalyst is the one or more in hydrochloric acid, nitric acid, sulfuric acid, acetic acid, hydrofluoric acid.
On the other hand, there is provided a kind of application method of long-acting lacquer painting water-repelling agent, including：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：By the long-acting lacquer painting water-repelling agent coated in the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 5-24h is wiped with clean rag.
Specifically, the coating method described in step 2 is spraying or wipe method.
Silane R (CH2)nSiX3Silanol R (CH are hydrolyzed to form in the presence of water2)nSi(OH)3, acid catalyst of the invention
In contain a certain amount of water, long chain organic silanes hydrolyze to form long chain silicone alcohol in mixed solution A, and be condensed formed it is a certain amount of
Long-chain siloxane oligomers, short chain TMOS forms short chain silanol in mixed solution B, and condensation forms short chain siloxane oligomerisation
After thing, mixed solution A and B mixing in obtained long-acting lacquer painting water-repelling agent, long-chain silanol and short chain silanol can occur part and pre-pay
Connection reaction.
After the long-acting lacquer painting water-repelling agent coating is come into varnish layer surface, organofunctional moieties' meeting of short chain Organosilicon Alcohol in Organic
Chemically reacted with the gas chromatography in layer of varnish, form a variety of chemical bonds, the organic functional of part long chain organic silanes
Group can also be chemically reacted with the organic matter of varnish layer surface, and the hydroxyl of silanol can also be sent out with the exposed hydroxyl on varnish surface
Raw condensation reaction, enhancing water-repelling agent and the bond strength of varnish layer surface, at the same long chain silicone alcohol and long chain silicone alcohol it
Between, between short chain silanol and short chain silanol, between long chain silicone alcohol and short chain silanol, siloxane oligomers and siloxanes oligomerisation
Reacted between hydroxyl and hydroxyl between thing, between siloxane oligomers and silanol, and further condensation forms three-dimensional netted knot
The macromolecular organosilicon of structure, with molecular weight increase viscosity increase, it is possible to provide the physisorption power of some strength is tied with improving
Close effect, it is not necessary to the can that is heating and curing strong bonded.In addition, the long-chain organo-functional group of long chain organic silanes makes siloxanes
The film layer that oligomer is formed has hydrophobic performance.This hydrophobic film layer is not oxidizable, can effective protective paint surface, keep gloss
Degree, scratch is reduced, so as to protect vehicle body.And it is possible to prevente effectively from water droplet, greasy dirt, dust, mud dirt etc. paint surface attachment, make
The secondary cleaning that surface must be painted is extremely convenient.Suitable for the varnish surface of automobile, common lacquer painting, furniture lacquer surface, floor paint table
The paint surface processing such as face, trim paint surface.
The invention has the advantages that：
1) present invention is by the way that long chain organic silanes and short chain TMOS are mixed, according to long chain organic silanes and short chain oxygen
The special construction and special reaction mechanism of base silane, couple with many kinds of substance chemical bond on varnish surface, form strong bonded
Diaphragm, be covered in paint surface avoid water, greasy dirt, dust and mud dirt etc. with paint surface directly contact, will not because of friction etc.
External force fails, and hydrophobic effect is lasting.
2) long-acting lacquer painting hydrophobic coating prepared by the present invention, has strong-hydrophobicity and low-surface-energy, makes the difficulties such as the globule, spot
With attachment, reach self-cleaning purpose.
3) long-acting lacquer painting water-repelling agent prepared by the present invention does not use fluorine-containing silanes raw material, and production is low with use cost,
It can be widely popularized and apply.
4) method of preparation and use of long-acting lacquer painting water-repelling agent of the invention is simple and convenient, without extra process, operates into
This is low, it is easy to accomplish, operational maintenance can be carried out to lacquer painting, be adapted to be widely popularized and apply.
Brief description of the drawings
Fig. 1 a- Fig. 1 b are respectively the static contact angle on the paint surface of common paint surface hydrophobicity before and after the processing；
Common lacquer painting static contact angle change after Fig. 2 a- Fig. 2 b are respectively processed by the invention or after comparative example processing is bent
Line；
Fig. 3 is that general-utility car varnish surface is placed in different time test in outdoor environment after the present invention or comparative example processing
Static contact angle data and curves.
Embodiment
To make embodiments of the invention technical problems to be solved, technical scheme and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.But the present invention is limited to absolutely not these examples.As described below is only that the present invention is preferable
Embodiment, only to explain the present invention, can not therefore and be interpreted as the limitation of the scope of the claims of the present invention.It should be understood that
It is that any modifications, equivalent replacements and improvementsmade within the spirit and principles of the invention, etc., should be included in the present invention
Protection domain within.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Embodiment one：
The preparation method of long-acting lacquer painting water-repelling agent：
A) 10g dodecyltrimethoxysilanes and 2g hydrochloric acid, 40 DEG C of return stirrings are added in 80g isopropanols
100min, obtain mixed solution A.
B) 5g γ-methacryloxypropyl trimethoxy silane and 5g nitric acid, room temperature are added in 85g absolute ethyl alcohols
60min is stirred, obtains mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 20h is wiped with clean rag.
Embodiment two：
The preparation method of long-acting lacquer painting water-repelling agent：
A) addition 1g octadecyl trichlorosilane alkanes and 0.1g hydrochloric acid in 95g absolute ethyl alcohols, 30 DEG C of return stirring 120min,
Obtain mixed solution A.
B) 0.1g γ-methacryloxypropyl trimethoxy silane and 0.1g nitric acid, room are added in 70g isopropanols
Temperature stirring 10min, obtains mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 24h is wiped with clean rag.
Embodiment three
The preparation method of long-acting lacquer painting water-repelling agent：
A) 5g dodecyl triethoxysilanes and 1g hydrochloric acid, 60 DEG C of return stirrings are added in 90g absolute ethyl alcohols
65min, obtain mixed solution A.
B) 2g aminopropyl triethoxysilanes and 1g sulfuric acid are added in 75g absolute ethyl alcohols, 40min is stirred at room temperature, obtains
Mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 12h is wiped with clean rag.
Example IV：
The preparation method of long-acting lacquer painting water-repelling agent：
A) 6g octadecyl trimethoxysilanes and 2g nitric acid, 50 DEG C of return stirrings are added in 80g ethyl acetate
70min, obtain mixed solution A.
B) add 3g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane in 90g isopropanols and 1g hydrochloric acid, room temperature are stirred
30min is mixed, obtains mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 1:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 4h is wiped with clean rag.
Embodiment five：
The preparation method of long-acting lacquer painting water-repelling agent：
A) 10g dodecyltrichlorosilanes and 2g hydrochloric acid are added in 85g methanol, 70 DEG C of return stirring 50min, is mixed
Close solution A.
B) 2g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane and 1g nitric acid, room temperature are added in 90g absolute ethyl alcohols
40min is stirred, obtains mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 1:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 8h is wiped with clean rag.
Embodiment six：
A) 6g hexadecyls and 2g hydrofluoric acid, 80 DEG C of return stirrings are added in 85g ethyl acetate
30min, obtain mixed solution A.
B) 4g aminopropyl trimethoxysilanes and 1g nitric acid are added in 85g isopropanols, 50min is stirred at room temperature, is mixed
Close solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 16h is wiped with clean rag.
Embodiment seven：
A) added in 85g absolute ethyl alcohols 3g dodecyl triethoxysilanes, 6g octadecyl trimethoxysilanes and
2g hydrofluoric acid, 50 DEG C of return stirring 70min, obtains mixed solution A.
B) 4g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane and 2g nitric acid, room temperature are added in 80g ethyl acetate
50min is stirred, obtains mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 1:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 18h is wiped with clean rag.
Embodiment eight：
A) added in 80g ethyl acetate 4g dodecyl trichloryl groups silane, 4g hexadecyls and
2g hydrofluoric acid, 60 DEG C of return stirring 65min, obtains mixed solution A.
B) 5g γ-methacryloxypropyl trimethoxy silane and 2g nitric acid are added in 80g methanol, is stirred at room temperature
60min, obtain mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 1:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 6h is wiped with clean rag.
Embodiment nine：
A) 4g hexadecyls and 2g hydrofluoric acid, 70 DEG C of return stirrings are added in 90g ethyl acetate
50min, obtain mixed solution A.
B) 0.1g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane, 3g γ-methyl-prop are added in 80g absolute ethyl alcohols
Alkene acryloxypropylethoxysilane trimethoxy silane and 2g nitric acid, are stirred at room temperature 50min, obtain mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 10h is wiped with clean rag.
Embodiment ten：
A) 2g dodecyltrimethoxysilanes, 3g octadecyl trichlorosilane alkanes, 2g 16 are added in 90g ethyl acetate
Alkyl triethoxysilane and 2g nitric acid, 40 DEG C of return stirring 100min, obtain mixed solution A.
B) 4g aminopropyl triethoxysilanes, 0.5g γ-methacryloxypropyl front three are added in 85g isopropanols
TMOS and 2g nitric acid, are stirred at room temperature 50min, obtain mixed solution B.
C) it is used for before coating lacquer painting, by mixed solution A and B according to 2:1 ratio is well mixed, and long-acting paint surface is made and dredges
Aqua.
The application method of long-acting lacquer painting water-repelling agent：
Step 1：Layer of varnish surface clean is clean, and holding surface is dried；
Step 2：Above-mentioned long-acting lacquer painting water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 14h is wiped with clean rag.
Comparative example one：
Step 1：5g dodecyl triethoxysilanes and 1g hydrochloric acid, 60 DEG C of return stirrings are added in 90g absolute ethyl alcohols
65min, obtain mixed solution A.
Step 2：2g aminopropyl triethoxysilanes and 1g sulfuric acid are added in 75g absolute ethyl alcohols, 40min is stirred at room temperature,
Obtain mixed solution B.
Step 3：Layer of varnish surface clean is clean, and holding surface is dried；
Step 4：Mixed solution B is sprayed on varnish surface, naturally dry 20min；Mixed solution A is sprayed into varnish again
Surface, naturally dry 5min；
Step 5：Coating is wiped into even, last room temperature 14h with clean rag.
Comparative example two：
Step 1：6g octadecyl trimethoxysilanes and 2g nitric acid, 50 DEG C of return stirrings are added in 80g ethyl acetate
70min, obtain mixed solution A.
Step 2：3g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane, 5g vinyl three are added in 90g isopropanols
Ethoxysilane and 1g hydrochloric acid, are stirred at room temperature 30min, obtain mixed solution B.
Step 3：Layer of varnish surface clean is clean, and holding surface is dried；
Step 4：Mixed solution B is coated in varnish surface, naturally dry 40min in a manner of scratching；Again by mixed solution A
Spray to varnish surface, room temperature 14h.
Comparative example three
Step 1：6g octadecyl trimethoxysilanes and 2g nitric acid, 50 DEG C of return stirrings are added in 80g ethyl acetate
70min, obtain mixed solution A.
Step 2：3g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane, 5g vinyl three are added in 90g isopropanols
Ethoxysilane and 1g hydrochloric acid, are stirred at room temperature 30min, obtain mixed solution B.
Step 3：Layer of varnish surface clean is clean, and holding surface is dried；
Step 4：Mixed solution B is coated in varnish surface, naturally dry 40min in a manner of scratching；Again by mixed solution A
Varnish surface is sprayed to, 120min is placed under 90 DEG C of environment.
Comparative example four：
Step 1：6g octadecyl trimethoxysilanes and 2g nitric acid, 50 DEG C of return stirrings are added in 80g ethyl acetate
70min, obtain mixed solution A.
Step 2：3g γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane, 5g vinyl three are added in 90g isopropanols
Ethoxysilane and 1g hydrochloric acid, are stirred at room temperature 30min, obtain mixed solution B.
Step 3：Before coating lacquer painting, by mixed solution A and B according to 1:1 ratio is well mixed, and water-repelling agent is made.
Step 4：Layer of varnish surface clean is clean, and holding surface is dried；
Step 5：Above-mentioned water-repelling agent is sprayed on the dry varnish layer surface of cleaning, naturally dry 5min；
Step 3：Even, last room temperature 4h is wiped with clean rag.
In order to further confirm the hydrophobic effect of the long-acting lacquer painting water-repelling agent of the invention prepared, after the present invention is to hydrophobic treatment
The static contact angle of lacquer painting sample and common lacquer painting sample measure to judge dredging for the long-acting lacquer painting water-repelling agent of the present invention
Water effect.
In order to further confirm that the long-acting water-repelling agent for preparing of the present invention has excellent durability, by through the present invention
The common lacquer painting sample of reason carries out circulating frictional experiment to simulate issuable loss, and with comparative example in actual use
First, two, three, four contrasted.The method of frictional experiment is：Sponge block is soaked completely in clear water, in load 1N situation
Under common lacquer painting sample is rubbed back and forth, one is considered as a rub cycle back and forth.After measuring different cycle-indexes
Common lacquer painting sample surfaces judge the static contact angle of water the wear-resisting intensity of hydrophobic coating.
Data of the automobile coating surface of the embodiment one to ten of table 1 processing in terms of hydrophobicity
Test result is found：Long-acting lacquer painting water-repelling agent described in the embodiment of the present invention one to ten is used to handle automobile varnish
Surface, the contact angle of before processing is 48.2~62.8 °, and the contact angle after handling is 106.1~111.7 °.Such as：Will be common
Automobile varnish face is contrasted with the automobile varnish surface after the processing of the embodiment of the present invention four, tests the result of static contact angle
It has been shown that, before processing contact angle are 48.6 ± 2.8 °, and are 111.5 ± 1.6 ° (as shown in accompanying drawing 1a- accompanying drawings 1b) after handling.Thus
Understand, by the processing of lacquer painting water-repelling agent produced by the present invention, varnish surface can form effective hydrophobic coating, and water droplet is beaten
Tumbled naturally on coating, moisture film will not be formed on varnish surface.
Also, the lacquer painting after the friction of the different cycle-indexes of measurement judges the resistance to of hydrophobic coating to the static contact angle of water
Grind intensity, the results showed that long-acting lacquer painting hydrophobic coating made from the embodiment of the present invention one to ten has higher wear-resisting intensity.Example
Such as, common lacquer painting sample is as depicted in figure 2, solid by long-acting lacquer painting water-repelling agent made from embodiment three and comparative example one, two
Square point curve is the lacquer painting contact angle after processed by the invention, it is seen that contact angle is hardly after multiple rub cycle
Change；And the lacquer painting contact angle that black circle curve is handled for example one by contrast, black triangle point curve is comparative example
The lacquer painting contact angles of two processing, comparative example one, two after 2000 circulation frictions its contact angle it is small by nearly 20%, illustrate it
The existing larger abrasion in surface, so as to illustrate that there is the surface hydrophobicity coating that mixed solution A and B are mixed to prepare before coating lacquer painting
More preferable wear-resisting intensity；In order to further verify that the method for the invention for preparing long-acting lacquer painting water-repelling agent is easier, in comparative example
2nd, VTES has been it is possible to additionally incorporate respectively in three, four, the static state of the circulation frictional experiment compared with example IV
For contact angle as shown in accompanying drawing 2b, closed square point curve is the lacquer painting contact angle of the invention handled, compared with comparative example four, explanation
The addition of VTES does not significantly improve the hydrophobic performance of surface hydrophobicity coating and wear-resisting intensity；With comparative example
Three compare, with reference to accompanying drawing 2a comparative example two illustrate VTES addition need be heating and curing can be only achieved compared with
Good wear-resisting intensity, further illustrate that the preparation of the long-acting lacquer painting water-repelling agent of the present invention and its application method are easier and be easy to
Realize, be more suitable for the operational maintenance of lacquer painting.
Secondly, influence of the preparation to common lacquer painting sample on hydrophobic coating, long-acting lacquer painting produced by the present invention of learning from else's experience
Water-repelling agent, water-repelling agent is dripped on common lacquer painting sample, lacquer painting change is observed after 3h, as a result surface, lacquer painting is without significant change.
In addition, the varnish face for the processing of the embodiment of the present invention one to ten of learning from else's experience is placed in outdoor environment, its surface of Timing measurement connects
Feeler judges the weather resistance of hydrophobic figure layer, the results showed that, after six months its contact angle compared to it is initial when substantially do not become
Change, for example, shown in accompanying drawing 3 be through example IV, comparative example three, comparative example four processing after varnish surface be placed in outdoor environment
The static contact angle of middle different time test, the contact angle of example IV are held nearly constant hydrophobic painting prepared by the explanation present invention
Layer has good weather resistance；And the contact angle of comparative example three, four in outdoor environments after 180 days is small by nearly 10%, illustrate paint
Surface receives certain destruction, further illustrates that hydrophobic coating prepared by the present invention has more preferable durability.
Therefore, the varnish surface hydrophobicity agent obtained by embodiment can pass through chemical bonded refractory with the gas chromatography on varnish surface
Close, the intrinsic property of long chain organic silanes and short chain organosilan acts synergistically the guarantor of the tridimensional network to form strong bonded
Cuticula, hydrophobic effect is lasting, can play significant self-cleaning action with rain-proof, oil-stain-preventing, antistatic.With stronger weatherability
Energy.Meanwhile this product does not influence lacquer painting quality, stronger weather resistance and permanent hydrophobic effect can persistently protect lacquer painting, and
And operational maintenance can be carried out to lacquer painting, reach the purpose for keeping lacquer painting glossiness and protecting vehicle body.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
- A kind of 1. preparation method of long-acting lacquer painting water-repelling agent, it is characterised in that including：Step 1：1-10 parts long chain organic silanes and 0.1-2 part acid catalysts are added in 80-95 part organic solvents, in 30-80 DEG C return stirring 120-30min, obtains mixed solution A；Step 2：0.1-5 part short chain TMOSs are added in 70-95 part organic solvents and 0.1-5 part acid catalysts, room temperature are stirred 10-60min is mixed, obtains mixed solution B；Step 3：Before coating lacquer painting, by the mixed solution A and B according to volume ratio 2：1~1：1 is well mixed, and institute is made State long-acting lacquer painting water-repelling agent；Wherein, the long chain organic silanes are dodecyltrimethoxysilane, dodecyl triethoxysilane, dodecyl One kind in trichlorosilane, octadecyl trimethoxysilane, octadecyl trichlorosilane alkane, hexadecyl or It is a variety of；The short chain TMOS is γ-methacryloxypropyl trimethoxy silane, aminopropyl trimethoxysilane, ammonia One or more in propyl-triethoxysilicane, γ-(2,3 the third oxygen of epoxy) propyl trimethoxy silicane.
- 2. preparation method according to claim 1, it is characterised in that the organic solvent be ethanol, methanol, isopropanol, One or more in ethyl acetate, n-hexane.
- 3. preparation method according to claim 1, it is characterised in that the acid catalyst is hydrochloric acid, nitric acid, sulfuric acid, second One or more in acid, hydrofluoric acid.
- 4. the application method of long-acting lacquer painting water-repelling agent made from any described preparation methods of claim 1-3, it is characterised in that Including：Step 1：Layer of varnish surface clean is clean, and holding surface is dried；Step 2：By the long-acting lacquer painting water-repelling agent coated in the dry varnish layer surface of cleaning, naturally dry 5min；Step 3：Even, last room temperature 5-24h is wiped with clean rag.
- 5. application method according to claim 4, it is characterised in that the coating method of the step 2 is spraying or wipes.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738903A (en) * | 1997-02-27 | 1998-04-14 | Diamond Seal, Inc. | Glass coating composition and method of application |
| CN103433188A (en) * | 2013-08-28 | 2013-12-11 | 奇瑞汽车股份有限公司 | Preparation method for easily-cleaned hydrophobic membrane used on surface of automotive body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738903A (en) * | 1997-02-27 | 1998-04-14 | Diamond Seal, Inc. | Glass coating composition and method of application |
| CN103433188A (en) * | 2013-08-28 | 2013-12-11 | 奇瑞汽车股份有限公司 | Preparation method for easily-cleaned hydrophobic membrane used on surface of automotive body |
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