CN101368020B - Composition for coating wiper blade rubbers, coating method using the same, and wiper blade rubbers made therefrom - Google Patents
Composition for coating wiper blade rubbers, coating method using the same, and wiper blade rubbers made therefrom Download PDFInfo
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- CN101368020B CN101368020B CN 200810007685 CN200810007685A CN101368020B CN 101368020 B CN101368020 B CN 101368020B CN 200810007685 CN200810007685 CN 200810007685 CN 200810007685 A CN200810007685 A CN 200810007685A CN 101368020 B CN101368020 B CN 101368020B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/38—Wiper blades
- B60S2001/3827—Wiper blades characterised by the squeegee or blade rubber or wiping element
- B60S2001/3829—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by the material of the squeegee or coating thereof
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Abstract
The present invention relates to a composition, which can be used for coatin g (painting) wiper blade rubbers to improve endurance and resistance to frictional forces of the blade rubbers, and coating method using the same. The coating composition of the present invention is used for coating wiper blade rubbers and consists of nano-sized PTFE (Teflon), polyurethane, silicone resin, graphite, tungsten, molybdenum, a carbon lubricant, a water-based resin, distilled water as a solvent and additives for paint.
Description
Technical field:
The present invention relates to a kind of coating composition that is used for coating wiper blade rubbers, relate in particular to a kind of in order to improve weather resistance and the patience of frictional force to be applied and have the special teflon compsn, its coating method of nanometer size and the wiper blade rubbers through this method preparation to wiper blade rubbers.
Background technology:
General automobile is to drive the windscreen wiper India-rubber strip that is combined on the wiper through the windscreen wiper arm on the vehicle.The windscreen wiper India-rubber strip horizontally slips on the glass port of vehicle through said drive unit and foreign matters such as rain, snow, dust is removed, thereby guarantees the visual field of navigating mate.Because the part that contacts with glass surface in the said wiper is strip (strip-shaped), therefore be called the wiper blade rubbers bar, and abbreviate it as wiper blade rubbers or windscreen wiper rubber, so the present invention will obscures use to these two kinds of terms.
The windscreen wiper rubber that on the carriage of above-mentioned wiper, is used in combination is made up of resilient material, and this windscreen wiper rubber is divided into head and windscreen wiper sheet wedge portion (wedge) just.Said head combines with the support of wiper, and said windscreen wiper sheet contacts with the glass surface of automobile.Said head and wedge portion are assembled into it when the wiping vehicle glass, and be folding to the opposite direction of glass wiping direction according to the frictional force that produces between glass and the windscreen wiper rubber, thereby windscreen wiper rubber can keep even wiping and non-slip.
The elastomeric material of above-mentioned wiper not only should have mechanical characteristics but also should have and requirement condition to the relevant complicacy of the stability of external influence.The windscreen wiper elastomeric material should have flexible; And on vehicle glazing (windshield), can lubricate slip; And, especially should have weather resistance to the pharmaceutical chemicals that comprises in oxidation (ozone decomposition), oil (mineral oil) or the scavenging solution to externalities.
The windscreen wiper elastomeric material generally is a rubber, more specifically is to add sulphur tree elastomer or viton.Yet in order to improve the sliding properties of rubber, the present invention's suggestion such as the surface to windscreen wiper rubber applies processing, chlorination and perhaps plates lubricated powder such as moly-sulfide.
The windscreen wiper rubber that discloses among the DE-C-35 27 093 mainly is made up of EPDM (Ethylene Propylene Diene Monomer, terpolymer EP rubber), but the unsaturated position of EPDM is positioned at the outside of polymer main ring.Therefore, EPDM is not by halogenation, and it does not have weather resistance to the pharmaceutical chemicals that comprises in oil and the scavenging solution.In order to improve the sliding properties and the weather resistance of most of windscreen wiper rubber of forming by EPDM; Suitably use EPDM according to DE-C-35 27 093; And on the matrix of forming by EPDM, on the zone of glass port surface slip, dispose at least by chlorating polydiene monolithic.Said windscreen wiper rubber exists its different elastomeric material layers to have the shortcoming of more complicated structure.
For addressing the above problem, international publication number is that WO 1999/39948 (the open communique of corresponding Korea S's patent of invention 10-2001-0015914 number) has disclosed the state that the head of windscreen wiper rubber and wedge portion material are separated respectively.At this, because the head of polydiene can halogenation, so sliding capability is good, and wiper easily near and the zone of the spring guide rail interlock of support bar and metal supporting frames, and can make the surface firmer.In addition; The Bridge of wiper and wedge portion use chloroprene (chloroprene; CR) rubber; This chloroprene has outstanding mechanical characteristics, and ugly weather, aging, pharmaceutical chemicals, Influence of Temperature are had very high weather resistance, therefore can reach excellent cleaning effect with simple and economic method.Though this chloroprene has very high weather resistance to influences such as ugly weather, aging, pharmaceutical chemicals, temperature, the patience of the frictional force that produces between glass and the windscreen wiper rubber etc. had certain limitation.
In addition, the patent of the open communique of Korea S's patent of invention 10-2005-006677 number disclosed the wiper coating composition with and coating method.Wherein employed coating composition is necessary composition with graphite and dimethyl silicone oil (Dimethyl silicone oil), and under the condition that solvent exists, comprises the resin of from polyol resin, urethane resin, the fluoro-resin that contains hydroxyl, epoxy resin and silicone resin, selecting.When the wiper that uses this coating composition to apply operates, can on the front glass of vehicle, form the outstanding drying film of weather resistance on automobile, and can prevent that wiper from producing noise and jitter phenomenon.Yet; Employed solvent is selected from butanone (methylethyl ketone), toluene, YLENE and the butylacetate as organic solvent in this existing invention; And employed resin is not confined to water-base resin yet, therefore can cause problem of environmental pollution.
Technology contents:
To the problems referred to above, the present invention provides a kind of special teflon coating composition that is used to apply windscreen wiper rubber and environmentally safe.Said compsn is coated on the windscreen wiper rubber, makes it have good weather resistance to influences such as ugly weather, pharmaceutical chemicals, temperature, and has promoted the patience to frictional force.In addition, the present invention also provides a kind of coating excellent that has, and can keep the coating composition of drying performance for a long time.Coating composition of the present invention uses small-particle littler than conventional coating particle, that have nanometer unit to apply; Thereby compare with the coating composition of record in above-mentioned Korea S publication communique 10-2005-006677 number; Apply excellent, and can keep the drying performance for a long time.
Above-mentioned purpose of the present invention is to realize through the coating composition that is used for coating wiper blade rubbers.Said compsn comprises under the condition that solvent exists: the special teflon of 3.5-15 weight %; 3.2-9.6 the urethanum of weight % (Urethane); 1.6-6.0 the silicone resin of weight %; 5.0-25.0 the water-base resin of weight %, and these compositions-Te teflon, urethanum, silicone resin, water-base resin size are the 50-500 nanometer, and preferably use zero(ppm) water (water) as solvent.
In one embodiment of the invention, said coating composition can comprise: the silver-colored composition below the 0.16-0.24 weight %; The perhaps graphite of 3.5-15 weight % (Graphite) or carbon black; Perhaps said silver-colored composition and graphite composition.Said composition size is the 50-500 nanometer.
The rubber that uses among the present invention can be conventional rubber, that is to say and can also use tree elastomer or the viton that adds sulphur, however preferential polydiene or the neoprene that uses in above-mentioned prior art exemplified.Especially, said polydiene is tree elastomer or divinyl rubber, styrene-butadiene rubber(SBR), EPDM (Ethylene Propylene Diene Monomer) rubber preferably, also can use Zylox according to different demands.
In addition, above-mentioned purpose of the present invention can also be through using said coating composition to come the method for coating wiper blade rubbers and using the wiper of this method preparation to realize.Especially, in order to improve drying performance and weather resistance, said coating is carried out applying the second time after carrying out applying the first time through intermediate medium again.When carrying out applying the second time, preferably employed rubber surface is preheating to and can makes its expansible temperature, under rubber surface expansible state, apply with spray regime.
Be the trade(brand)name of polytetrafluoroethylene (PTFE) representative in fluorine synthetic resins as the employed special teflon of core composition among the present invention; Said special teflon has as crystalline resins can be 260 ℃ of long-time thermotolerances of using; And as having resistance to chemical reagents, electrical insulating property; Non-adhesive, frictional coefficient is low etc., and special synthetic resins is widely known.Especially, this PTFE is 327 ℃ a crystalline polymer as fusing point, and use temperature is 260 ℃ continuously, and can be in low temperature (268 ℃) stable use in the high temperature range, and this also is well-known.
And it is best that the resistance to chemical reagents of special teflon is considered in organic materials.Especially, it is not etched in acid, alkali and all kinds of SOLVENTS completely, only just is etched under the mal-condition in special medicine such as fluorine gas, molten alkali metal, therefore is used in liner, packing, the various sealing agents etc.And the maximum characteristics of special teflon in mechanical characteristics are that frictional coefficient is little, and available various packing materials are strengthened, and also have the bigger characteristics of non-adhesive as said special teflon, in the coating of frying pan or various steel pipes etc., are considered to best synthetic resins.
If utilize physics, chemical property and the mechanical characteristics of this special teflon; Come windscreen wiper rubber is applied with the compsn that includes special teflon; Just can make windscreen wiper rubber that ugly weather, aging, pharmaceutical chemicals and Influence of Temperature are had good weather resistance, and can promote patience the friction that produces between glass and the windscreen wiper rubber.The present invention is conceived to this mechanism and accomplishes.
Based on the total amount of compsn, said special teflon can be 3.5-15 weight % in coating composition, if exceed this scope, just can't reach the coating effect of expection.The composition of said special teflon is preferably 7-8 weight %.
The urethanum that uses among the present invention is to carry out the synthetic macromolecular compound that the polyaddition reaction of urethane bonds generates repeatedly through diisocyanate and divalent alcohol, in its main chain, includes urethane bonds.Said urethanum can use usually any at the water urethane of market sale.
Based on the total amount of compsn, said urethanum can use 3.2-9.6 weight % in coating composition.If exceed said scope, just can't reach the coating effect of expection.The composition of said urethanum is preferably 5-7 weight %.
The silicone resin (silicone resin) that the present invention uses is the organic derivative polymer of silicon, is also referred to as silicone resin.The molecular structure of said silicone resin is the structure of the siloxane bond (Si-O key) that intersects of silicon and oxygen and is skeleton with silicon.Said silicone resin is the thermoplasticity synthetic resins that in silicon, is added with methyl, phenyl, hydroxyl etc.This silicone resin has the effect that defoams in most of solvent, especially, owing to have water-repellancy (characteristic that dabbles) at inorganics and organism, and so be used in the compsn of the present invention.The silicone resin that the present invention uses is preferably and gathers hydrogen monomethyl siloxanes (polyhydromonomethylsiloxane) oil or resin so long as the silicone resin of selling on the market promptly can use.
In coating composition based on the total amount of compsn; Said silicone resin can use 1.6-6.0 weight %; If use the above silicone resin of 6 weight %; The tunica albuginea phenomenon will be occurred on the glass surface, therefore its intended purposes can't be reached, if said silicone resin also same phenomenon can occur below 1.6 weight %.The composition of said silicone resin is preferably 2-3 weight %.
In addition; Though used silicone resin for the water-repellancy of promoting coating composition of the present invention; But except this water-repellancy, in order to give necessary other physics, chemical property to wiper, if can the water-base resin of selling on the market (water based resin) be added in the coating composition of the present invention; Aqueous thermosetting resin is preferable so, preferably urethane resin (urethane regin).
Based on the total amount of compsn, said water-base resin can use 5-25 weight % in coating composition, if exceed this scope, just can't reach expected effect of the present invention.The composition of said water-base resin is preferably about 20 weight %.
In addition, in order to give the favorable mechanical characteristic for coating composition of the present invention and to the height weather resistance of external influence etc., the present invention can also add graphite or the carbon black of selling on the market.
In addition, silver (silver) is considered to have beyond the characteristic of antibiotic, sterilization, increase weather resistance, can also promote chemical property.Because the characteristic of this silver-colored composition is that wiper of the present invention is necessary, therefore can use in the present invention.This silver-colored composition adds on a small quantity in coating composition and gets final product, and therefore can use 0.16-0.5 weight % based on the total amount of compsn.If exceed said scope, just possibly can't get a desired effect or cause economy to descend.
The present invention also adds graphite (graphite) or carbon black except silicone resin.This be for, make silicon composition on the coated wiper blade rubbers at first through the swinging of windscreen wiper sheet, the drying composition is transferred on the vehicle glass, thereby is made glass have the drying performance.But,, when the windscreen wiper sheet carries out wiping, cause noise or shake because this drying composition makes frictional coefficient become big.Therefore, in order to prevent the generation of said phenomenon, the graphite or the carbon black that add the coefficient of reducing friction prepare coating composition.Based on the total amount of compsn, this graphite or carbon black composition can use 3.5-15 weight % in coating composition, if exceed said scope, just can't get a desired effect perhaps to make economy descend.
Coating composition of the present invention not only can comprise easy preparation compsn or the thorough drying of compsn is played the dispersion agent of positive booster action, but also can further comprise the additive of auxiliary coating properties such as tranquilizer, siccative, thickening material, skimmer.Because this dispersion agent and additive are just enough on a small quantity, be that benchmark can use the amount that is less than or equal to 0.5 weight % respectively therefore with the total amount.
At last, as the solvent that is used to prepare coating composition, it can use multiple organic solvent, but because said organic solvent produces the material of contaminate environment, so preferably use the zero(ppm) water of environmentally safe.Yet,, can also use a spot of paint thinner and zero(ppm) water blended mixture if only use zero(ppm) water can not fully dissolve said each composition at short notice.The paint thinner that the present invention uses is the mixed solvent of the routine when applying, used for the viscosity that reduces coating, and can buy easily on the market.
Coating composition of the present invention has used, and small-particle littler than existing particle, that have nanometer unit applies; For preparing this nanoparticle coating composition; At first each composition is processed the small-particle of 50-500 nanometer; Then said composition is dissolved in the zero(ppm) water solvent, thus the preparation coating composition.At this, the preferential product that uses below about 300 nanometers of special teflon composition, other composition preferably uses about 400 nanometer size product.
The engineering of using the compsn of said nanometer size to apply is with the rubber surface preheating and make under its expansible state, to said rubber surface spray paint compsn in 60-100 ℃ of TR.Though preheating temperature is different with the different in kind of rubber, can make employed rubber surface expansible temperature be generally 80 ℃ more suitable.Said warm is different with existing coating method, has used the material of nanometer unit to apply.So not only rubber surface is coated, and apply the inside that composition can be penetrated into rubber surface.Therefore, coating composition of the present invention is compared with existing coating combination, has the advantage that applies excellent, can keep the drying performance for a long time.
Wiper blade rubbers of the present invention can be through conventional method preparation; But put down in writing like above-mentioned prior art document; Preferably diene-elastic caoutchouc and chloroprene-elastic caoutchouc coextrusion (coextrusion) are prepared, at first make the cross-sectional shape with regulation, the India-rubber strip that is not added sulphur in this process.Then wiper blade rubbers is carried out sulfur adding treatment, and preferably use as required such as hypochlorite (hypo chlorite) or trichlorocyanuric acid (trichlorocyanuric acid) and carry out chlorination.
Compsn of the present invention carries out the coating method that graphite applying carries out the double effects of silicon coating afterwards again owing to include graphite or carbon black and silicon composition so can use primary coating to reach; With cause endurance issues because special composition descends adhesive power, so carry out applying after the pre-treatment method of upper track.
The wiper of the special teflon of coating of the present invention, because its wiping properties is outstanding, frictional coefficient is little, so the vehicle noise that the windscreen wiper sheet causes is little, and the shake (chattering) that the windscreen wiper sheet causes is also few.In order further to confirm said effect, utilize by following examples prepared coating compsn and carry out wiping properties test, drying coating PT, frictional force test.
Description of drawings:
Fig. 1 is the cross-sectional view of the existing windscreen wiper rubber that combines of head that is formed with the inner elastomeric guide rail and the wedge portion that contacts with the vehicle glass face.
Fig. 22 windscreen wiper rubber that to be the head that is formed with outside elastic guide be integrally formed with wedge portion with the contact of vehicle glass face each other in the face of and the cross-sectional view of 2 windscreen wiper rubber of the present invention of slightly being connected.
Fig. 3 is the graphic representation of under the state that does not carry out the wet towel construction of drying in advance, the drying test-results of the wiper of applying coatings compsn being represented with drying rate (%) and test number (TN).
Fig. 4 and Fig. 5 are the automobile front glass window photos that is presented at the initial stage drying rate state of comparison other product under the different round number of times (product sold on the market) and product of the present invention (NTPS15) respectively.
Fig. 6 is the graphic representation of constructing and afterwards the drying test-results being represented with drying rate (%) and test number (TN) with the wet towel of drying in advance.
Fig. 7 be show in advance construct with the wet towel of drying after under different round number of times the automobile front glass window photo of the durable drying rate of comparison other product (product sold on the market).
Fig. 8 and Fig. 9 be show respectively in advance construct with the wet towel of drying after under different round number of times the automobile front glass window photo of the durable drying rate state of product of the present invention (NTPS15).
Figure 10 is the graphic representation photo that shows the frictional coefficient of comparison other product (product sold on the market) under dry (DRY) and moistening (WET) state that does not carry out the wet towel construction of drying in advance respectively.
Figure 11 is the graphic representation photo that shows the frictional coefficient of product of the present invention (NTPS15) under dry (DRY) and moistening (WET) state that does not carry out the wet towel construction of drying in advance respectively.
Embodiment:
Following prepare coating composition with reference to specific embodiment after, coating process is described simply.
Embodiment 1:
In as the zero(ppm) water (water) of solvent, add special teflon, the urethane resin of 25 weight %, the silicone resin of 1 weight %, the carbon black of 1 weight %, the silver of 2 weight % and the paint additive of surplus of 25 weight %; Wherein said special teflon is processed about 300 nanometers size, the small-particle that other composition is processed about 400 nanometers size prepares the big or small coating composition of nanometer.
The cross-sectional view of Fig. 1 existing windscreen wiper rubber that to be head 13 that is formed with inner elastomeric guide rail 10 and the wedge portion 15 that contacts with the vehicle glass face combine through Bridge 17.On the contrary, Fig. 22 windscreen wiper rubber that to be the head 33 that is formed with outside elastic guide 30 be integrally formed with wedge portion 35 with the contact of vehicle glass face each other in the face of and the cross-sectional view of 2 windscreen wiper rubber of the present invention of slightly being connected through connection section 40.
The present invention can also use the coating composition of above-mentioned preparation to apply existing windscreen wiper rubber shown in Figure 1.Though the existing wiper blade rubbers bar not shown, that the present invention combines or is combined as a whole through Bridge applicable to the head that is formed with the inner elastomeric guide rail and the wedge portion that contacts with the vehicle glass face equally.
But, as shown in Figure 2,2 windscreen wiper rubber of the present invention with the state forming that combines at connection section 40 after, cut with cutter at said connection section 40 places but incomplete cut-off uses intermediate medium to carry out the pre-treatment process then carry out smoothly so that apply.Secondly, apply with the integral body of spray regime with the compsn that has prepared wiper blade rubbers.Afterwards, cut off the middle of connection section 40, just can obtain 2 wiper blade rubbers, use respectively then with cutter.
Embodiment 2:
In as the zero(ppm) water (water) of solvent, add special teflon, the urethane resin of 20 weight %, the graphite of 7 weight %, the silver of 2 weight % and the various paint additives of surplus of 18 weight %; Said special teflon is processed about 300 nanometers size, and the small-particle that other composition is processed about 400 nanometers size prepares nanometer size coating composition.
Utilize the coating composition of present embodiment 2 to come the coating method of coating wiper blade rubbers can be suitable for the method for explanation among the embodiment 1 equally.
Embodiment 3:
In the zero(ppm) water (water) that uses as solvent, add special teflon, the urethane resin of 20 weight %, the graphite of 9 weight %, the silver of 2 weight % and the various paint additives of surplus of 8 weight %; Said special teflon is processed about 300 nanometers size, and the small-particle that other composition is processed about 400 nanometers size prepares the big or small coating composition of nanometer.
Utilize the coating composition of present embodiment 3 to come the coating method of coating wiper blade rubbers can be suitable for the method for explanation among the embodiment 1 equally.
Test 1: wiping properties test
By the wiping properties test basis KS R3015 of the prepared wiper blade rubbers of the foregoing description, the testing apparatus that is used for wiper performance evaluation of RS R 0031 regulation has shown the wiping mark.This evaluation method is, water is spread across on the vehicle glass, actually then drives the windscreen wiper sheet, and is the perceptual evaluation method that benchmark is estimated according to score graph with 10 full marks.
At first, test and Selection by embodiment 1 prepared coating compsn, and selected the Hyundai Motor of vehicle model for " EF Sonata ", be that 28.3 ℃, humidity are to be divided into benchmark with 10 under 74% the condition wiping properties is estimated at temperature.Each mark is illustrated respectively in the following table, and wherein (1-1) table 1 shows the test-results of using the windscreen wiper rubber that does not have the applying coatings compsn, and (1-2) table 2 shows the test-results of the windscreen wiper rubber that uses the applying coatings compsn.
Table 1 (test-results on rubber before the coating composition)
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | On average | |
| up | 6 | 6 | 7 | 6 | 5 | 7 | 5 | 4 | 6 | 6 | 5 | 7 | 6 | 6 | 5.9 |
| down | 7 | 7 | 7 | 6 | 5 | 6 | 4 | 5 | 5 | 6 | 5 | 5 | 5 | 6 | 5.6 |
Table 2 (test-results on rubber after the coating composition)
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | On average | |
| up | 9 | 9 | 9 | 9 | 8 | 10 | 8 | 8 | 9 | 9 | 10 | 9 | 10 | 10 | 9.1 |
| down | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 9 | 10 | 8 | 9 | 10 | 8.9 |
Table 1 and table 2 are compared and can draw, the wiper blade rubbers on rubber before the coating composition, MV was 5.9 when its wiping properties made progress (UP) at wiper, MV is 5.6 when downward (DOWN).On the contrary, the wiper blade rubbers after applying, MV was 9.1 when its wiping properties made progress (UP) at wiper, MV is 8.9 when downward (DOWN).Wiper blade rubbers wiping properties after in the perception evaluation of described wiping properties, also can learning coating composition is than outstanding about about 2 times of the wiper blade rubbers wiping properties before the coating composition.
Test 2: drying applies test
(the drying rate is to carry out under the state of in JIS D5710, stipulating %) to the drying weather resistance, and the drying test that applies according to wiper is divided into, and (1) uses the wiper of the coating composition that is coated with embodiment 1 to carry out the drying test; (2) use the wet towel of drying to construct in advance, and then use the wiper of the coating composition that is coated with embodiment 1 to carry out the drying test.At this, the wet towel construction of drying is meant the process of using the simple wiping of drying wet tissue special of selling on the market.Owing to be stained with drying liquid on the wet towel of drying,, has the advantage that can obtain the drying effect so that construction in advance can make drying adhere to night is on glass.
The test comparison other is a product sold on the market, and promptly the drying of Korea S ' CAREX ' company applies windscreen wiper sheet (being expressed as ' product sold on the market '), and product of the present invention is expressed as ' NTP815 '.' product sold on the market ' used toluene as solvent, as the objectionable impuritiess such as YLENE of water-base resin; ' NTP815 ' but of the present invention but used harmless zero(ppm) water to use urethane resin as solvent and as water-base resin, and therefore product of the present invention is a kind of free of contamination environmentfriendly products.
The drying rate of (2-1) not carrying out the wet towel construction of drying is tested
The round test number (TN) of windscreen wiper sheet has been selected 4, is respectively 114 times, 228 times, 380 times and 5,380 times, and its result is illustrated in the following table 3.The curve representation of these drying rates x test number (TN) in Fig. 3, and is illustrated in the test-results photo of reality among Fig. 4 and Fig. 5.
(table three)
Analysis through his-and-hers watches three can find out that with the result that the state that does not carry out the wet towel construction of drying carries out initial stage drying rate test, the initial stage drying rate of product of the present invention is owing to increased by about 12% area, and therefore initial stage drying power of the present invention is improved.
The drying rate of (2-2) carrying out in advance after the wet towel of drying is constructed is tested
The round test number (TN) of windscreen wiper sheet has been selected 15, and its result is illustrated in the following table 4.With the curve representation of these drying rates x test number (TN) in Fig. 6, and with actual tests as a result photo be illustrated among Fig. 7 and Fig. 9.
(table four)
Result through his-and-hers watches four analyzes and can draw, and carries out the drying rate test-results after the wet towel of drying is constructed, and durable drying rate of the present invention is owing to increased by about 18% area, and therefore initial stage drying rate of the present invention is improved.
Test 3: (frictional force test)
The have no basis test code of any standard of frictional force test carries out, but has judged the size of frictional force through the amount of electric current, estimates with this.At this, be not the constant resistance value as the employed resistance value of the yardstick of frictional force, but as can compare one of windscreen wiper rubber friction power etc. relatively yardstick use.That is to say when the windscreen wiper sheet drives, to have certain voltage, and current change, if the frictional force on surface is little, the magnitude of current is just few; If frictional force is big, the magnitude of current is just many, and the present invention does according to this principle.
Do not carry out the wet towel construction of drying to initial stage drying rate test; Frictional coefficient is tested comparing object product (' listing product ') and product of the present invention (' NTP815 ') in dryness (DRY) and moisture state (WET), and its result is illustrated in Figure 10 and Figure 11.
Its result, with regard to the comparison other product, (1) is 1.17-2.5A when dryness, (2) are 1.17-2.5A when moisture state; And for the purpose of the present invention, (1) is 1.19-2.7A when dryness, is 1.17-2.0A during (2) moisture state.Can know that by above-mentioned test-results frictional coefficient cannot quantitative analysis, and come only can analyze relative friction forces through the size of electric current relatively.Product of the present invention is compared with the comparison other product, has than higher current value, therefore can judge that product of the present invention has good patience to frictional force.
In addition, when the coating composition of use embodiment 2 and embodiment 3 makes an experiment, also obtained and the proximate result of The above results, so omitted concrete comparative graph among the present invention.
Claims (7)
1. special teflon coating composition that is used for coating wiper blade rubbers, it is characterised in that under the condition that solvent exists:
(1) said compsn comprises the special teflon of 3.5-15 weight %, the urethanum of 3.2-9.6 weight %; 1.6-6.0 the silicone resin of weight %; 5.0-25.0 the water urethane resin of weight %;
(2) said compsn also comprises the silver-colored composition of 0.16-0.5 weight % and graphite or the carbon black of 3.5-15 weight %;
(3) said solvent is a zero(ppm) water, and based on the total amount of compsn, said zero(ppm) water is residuals weight % in coating composition; And
(4) all said compositions all are dissolved in the zero(ppm) water and size is the 50-500 nanometer;
Said urethanum is to carry out the synthetic macromolecular compound that the polyaddition reaction of urethane bonds generates repeatedly through diisocyanate and divalent alcohol, in its main chain, includes urethane bonds.
2. coating composition according to claim 1, wherein: the size of said special teflon composition is below 300 nanometers, the size of said other composition is 400 nanometers.
3. coating composition according to claim 1, wherein:
Said silicone resin is to gather hydrogen monomethyl siloxanes (polyhydromonomethylsiloxane) oil or resin.
4. according to any one described coating composition in the claim 1 to 3, wherein:
Said rubber is tree elastomer, divinyl rubber, styrene-butadiene rubber(SBR), terpolymer EP rubber, neoprene or Zylox.
5. coating method that utilizes any one described coating composition in the claim 1 to 4 to come coating wiper blade rubbers.
6. coating method according to claim 5, wherein:
Said rubber is tree elastomer, divinyl rubber, styrene-butadiene rubber(SBR), terpolymer EP rubber, neoprene or Zylox.
7. according to claim 5 or 6 described coating methods, wherein:
For coating is carried out smoothly, use intermediate medium to carry out after the pre-treatment employed rubber surface being heated to the temperature that can make its superficial expansion, and under said rubber surface expansible state, apply said compsn with spray regime.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070083002A KR20090018515A (en) | 2007-08-17 | 2007-08-17 | Tefron composition for coating a rubber of wiper blade and its coating method |
| KR1020070083002 | 2007-08-17 | ||
| KR10-2007-0083002 | 2007-08-17 | ||
| KR1020070132644 | 2007-12-17 | ||
| KR10-2007-0132644 | 2007-12-17 | ||
| KR1020070132644A KR100988533B1 (en) | 2007-12-17 | 2007-12-17 | Composition for coating a rubber of wiper blade, its coating method and a rubber for wiper blade prepared from the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101368020A CN101368020A (en) | 2009-02-18 |
| CN101368020B true CN101368020B (en) | 2012-03-14 |
Family
ID=40374857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810007685 Expired - Fee Related CN101368020B (en) | 2007-08-17 | 2008-03-06 | Composition for coating wiper blade rubbers, coating method using the same, and wiper blade rubbers made therefrom |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20090018515A (en) |
| CN (1) | CN101368020B (en) |
| CA (1) | CA2607647A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2969078B1 (en) | 2010-12-15 | 2013-04-12 | Valeo Systemes Dessuyage | ELASTOMER-BASED MATERIAL WIPING DEVICE (S) SUR-RETICLE |
| WO2012080367A1 (en) * | 2010-12-15 | 2012-06-21 | Valeo Systemes D'essuyage | Windscreen wiper blade treatment process |
| CN103788819A (en) * | 2014-01-20 | 2014-05-14 | 苏州苏万万向节有限公司 | Oil-resistant waterproof coating for universal joints |
| CN105482458A (en) * | 2016-01-05 | 2016-04-13 | 浙江源创电子科技有限公司 | Silicone rubber strip for windscreen wiper and preparation method thereof |
| CN105802366B (en) * | 2016-04-08 | 2017-04-05 | 北京凯瑞捷成新材料科技有限公司 | The aqueouss politef rain brush coating of coating composition and its preparation |
| FR3051168B1 (en) * | 2016-05-13 | 2019-05-10 | Valeo Systemes D'essuyage | WIPER BLADE FOR WIPER BLADE |
| CN109562743B (en) * | 2016-08-09 | 2022-02-18 | 株式会社富国 | Wiper blade rubber |
| WO2018030046A1 (en) * | 2016-08-09 | 2018-02-15 | 株式会社フコク | Wiper blade rubber |
-
2007
- 2007-08-17 KR KR1020070083002A patent/KR20090018515A/en not_active Application Discontinuation
- 2007-10-24 CA CA 2607647 patent/CA2607647A1/en not_active Abandoned
-
2008
- 2008-03-06 CN CN 200810007685 patent/CN101368020B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101368020A (en) | 2009-02-18 |
| KR20090018515A (en) | 2009-02-20 |
| CA2607647A1 (en) | 2009-02-17 |
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