CN102690593A - Nanometer water-based paint compound - Google Patents
Nanometer water-based paint compound Download PDFInfo
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- CN102690593A CN102690593A CN2012101796739A CN201210179673A CN102690593A CN 102690593 A CN102690593 A CN 102690593A CN 2012101796739 A CN2012101796739 A CN 2012101796739A CN 201210179673 A CN201210179673 A CN 201210179673A CN 102690593 A CN102690593 A CN 102690593A
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Abstract
The invention provides a nanometer water-based paint compound which comprises a polyurethane polymer containing a carboxylic acid group, a cross-linking agent, a wetting agent, a lubricating additive, a UV (Ultraviolet) stabilizing agent, a non-photosensitive nanometer grain and a surface modifier composed of a surface active agent. A coating prepared by using the nanometer water-based paint compound has the advantages of high-speed and uniform drying, excellent decontaminating and self-cleaning properties, long-lasting durability, lower surface friction, flexibility at low temperature and adhesive force for a substrate with low surface energy. The invention also provides a preparing method for the substrate coated with the nanometer water-based paint compound. The nanometer water-based paint compound is used for supplying a protecting coating with a low-friction surface applied to an automobile weather strip.
Description
Technical field
The present invention relates to the method on a kind of nano-waterborne coating compsn and the paint base material thereof, relate in particular to a kind ofly comprise polyether polyols with reduced unsaturation, linking agent, increase sliding auxiliary agent, wetting aid and the nano-waterborne coating compsn of UV suppressor factor and nano particle and the method on the paint base material thereof.
Background technology
Because small-size effect, surface effects, quantum size effect and the macro quanta tunnel effect etc. of nanoparticle make them present the characteristic that conventional material does not possess at aspects such as magnetic, light, electricity, sensitivities.Therefore nanoparticle has broad application prospects at aspects such as the sintering of magneticsubstance, electronic material, optical material, high compactedness material, catalysis, sensing, ceramic toughenings.Because nano material has special propertys such as surface effects, small-size effect, optical effect, quantum size effect, macroscopic quantum dimensional effect, can make coating obtain new function.
For example: granularity gets into nanoscale, and increasing of material surface active site can improve its chemical catalysis and light-catalysed response capacity, under the effect of ultraviolet ray and oxygen, gives precoat automatically cleaning ability; Time chemical bond can take place with the functional group of filmogen and combine in the surfactivity center, increases the rigidity and the intensity of coating greatly, thereby improves the scratch resistance of coating; The nano-material surface of high surface energy can obtain hydrophobic and lipophobic characteristic simultaneously through modification, is used for coating for internal and external wall and can significantly improves the pollution resistance of coating and can improve weathering resistance; Some particle diameter is less than the nano material of 100nm,, gamma ray had absorb and scattering process, can improve the radiation-resistant ability of coating, in coating for internal and external wall, can play the effect of anti-radon gas; Nano material is used in the priming paint, can increases the sticking power of priming paint and base material, improve physical strength, and the pretending firmly and filling effect of nano level pigment and priming paint, help to improve the interface combination of priming paint one coating; Nano material can play the surface and fill and bright and clean effect in finish paint, improve the gloss of finish paint, reduces resistance; Nano silicon adds the scrub resistance that can improve coating in the exterior coating to; Nano titanium oxide adds in the building external paint, can the weathering resistance of rubber-emulsion paint be brought up to a new grade, and the ageing-resistant performance of rubber-emulsion paint is improved a lot; Nano zine oxide adds in the exterior coating, can make coating have shielding ultraviolet rays, absorb infrared rays and the anti-toxic action of sterilization.
A kind of coating that is used for is disclosed like CN 1232593C, coating composition, the material of method and goods, it comprises nanoparticle system, or uses it that panoramic no life crust is carried out surface-treated.In some embodiments, the dispersion of nano particle in the mounting medium that is fit to is used to form coating composition, method and the goods that the multi-usage effect can be provided for modifying hard surfaces.These surface-treateds can produce persistent or semi-permanent multi-usage effect.But the snappiness of the coating that this invention provided and bounding force remain further to be improved.
U.S. patent 5,115, and 007 discloses the coating composition that is used to be prepared in wear-resistant, the low-friction coating on the EPDM rubber.Disclosed coating composition comprises the sealing polyurethane prepolymer that contains the blocked isocyanate base, with the linking agent of blocked isocyanate base coreaction, and consistency silicone oil and non-reactive solvent such as toluene.Coating composition is applied on the base material, solidifies the coating that contains polyether polyols with reduced unsaturation with formation then.This coating composition can be applied on the EPDM rubber, need not apply priming paint in advance or carry out the surface treatment of EPDM rubber.Yet this reference does not openly contain the waterborne compositions of polyether polyols with reduced unsaturation.
Summary of the invention
The object of the present invention is to provide a kind of nano-waterborne coating compsn, it provides the abrasion-resistant coatings with low surface friction and has been suitable on the paint EPDM rubber.In addition, this nano-waterborne coating compsn can the untreated EPDM rubber of paint on, so that the coating that untreated EPDM rubber is had good adhesion to be provided.The nano-waterborne coating compsn can be used for being provided for the protective coating with low-friction surface of automobile weather strip (weatherstrip).Coating composition provided by the present invention is not only dry fast, evenly, has decontamination, self-cleaning premium properties, and has long weather resistance and have, snappiness at low temperatures and the bounding force of low surface energy substrates than low surface friction.
Nano-waterborne coating compsn provided by the present invention comprises based on the weight of said nano-waterborne coating compsn:
(a) at least a polyether polyols with reduced unsaturation of 10-70wt%, wherein said polyether polyols with reduced unsaturation contains at least two carboxylic acid groups;
(b) at least a linking agent of 1-60wt%;
(c) at least a wetting agent of 0.01-4wt%;
(d) 0.1-15wt% at least a increases sliding auxiliary agent;
(e) the UV stablizer of 0.01-20wt%; With
(f) surface-modifying agent of the non-photosensitivity nano particle of significant quantity and a kind of tensio-active agent composition; Said nano particle exists so that remaining hydrophilic coating to be provided from the teeth outwards with effective amount, and wherein said non-photosensitivity nano particle is selected from inorganic, metal oxide, natural clay, artificial clay and its mixture.
The polyether polyols with reduced unsaturation that in nano-waterborne coating compsn of the present invention, contains comprises aliphatic urethane polymkeric substance and aromatic polyurethane polymkeric substance.Polyether polyols with reduced unsaturation contains the carboxylic acid group so that the reactive structure division that is fit to the functional group reactions of linking agent to be provided.Polyether polyols with reduced unsaturation must contain the carboxylic acid group of the minimum level that provides full cross-linked so that obtain to have the coating of sufficient weather resistance.The carboxylic acid group of excessive level can influence the wet fastness by the coating of the coating composition preparation that contains polyether polyols with reduced unsaturation unfriendly in polyether polyols with reduced unsaturation.
The polyether polyols with reduced unsaturation that is suitable for this coating composition can contain with acid number in the 5-50 scope, preferably in the 10-40 scope, and more preferably is the carboxylic acid content of characteristic in the 20-40 scope.In addition, polyether polyols with reduced unsaturation can have 20,000-2, and the scope more than 000,000, preferably 50,000-2, the scope more than 000,000 and more preferably 100,000-2, the weight-average molecular weight of the scope more than 000,000, i.e. Mw.Polyether polyols with reduced unsaturation can be the form of aqueous dispersion, and it contains mean diameter at 20nm-1, in the scope of 000nm, and preferably in the 30nm-500nm scope, the more preferably polyether polyols with reduced unsaturation particle in the 40nm-300nm scope.Contain polyether polyols with reduced unsaturation particulate aqueous medium and also can contain the water miscibility organic solvent, like 1-Methyl-2-Pyrrolidone and methyl ethyl ketone.Preferably, the aqueous dispersion that contains polyether polyols with reduced unsaturation does not contain organic solvent.The nano-waterborne coating compsn can contain 10-70wt%, and preferably 20-60wt% and more preferably 30-50wt% polyether polyols with reduced unsaturation are based on the weight of nano-waterborne coating compsn.
Nano-waterborne coating compsn of the present invention also contains linking agent.Linking agent is polymkeric substance or the non-polymer that contains at least two functional groups can reacting with the carboxylic acid group of polyether polyols with reduced unsaturation.The functional group that is fit to comprises epoxide ， oxazoline, melamine, carbodiimide and stable isocyanic ester such as blocked isocyanate in water.The preferred Shi of functional group oxazoline and melamine.Zui You selects De Shi oxazoline as functional group.The skeleton that is suitable as the polymkeric substance with side extension functional group of linking agent comprises propenoate, methacrylic ester, styrene butadiene, styrene-acrylate and vinylchlorid.The non-polymer that contains at least two functional groups comprises for example phenyl glycidyl ether, melamine monomer and di-epoxy compounds.Linking agent can be clean solid or liquid, perhaps in addition can be dissolved or be dispersed in organic solvent or the water-bearing media.Preferred cross-linking agents is to dissolve in or be scattered in clean solid or the liquid in the water.Other preferred cross-linking agents is the aqueous dispersion of the polymkeric substance of Ju You oxazoline, epoxide or blocked isocyanate base.In one embodiment, linking agent is the aqueous dispersion of the styrene-propene acid based copolymer of Han You oxazolinyl.Nano-waterborne coating compsn of the present invention contains 1-60wt%, and preferably 3-45wt% and more preferably 5-35wt% linking agent are based on the weight of nano-waterborne coating compsn.
In nano-waterborne coating compsn of the present invention; The carboxylic acid group of in polyether polyols with reduced unsaturation, containing number is 10 with the ratio of the number of the functional group of in linking agent, containing: 1-1: in 10 the scope; Preferably 5: 1-1: in 5 the scope and more preferably 3: 1-1: in 3 the scope.
Another component of nano-waterborne coating compsn is a wetting agent.Wetting agent reduces the surface tension of nano-waterborne coating compsn, to increase the ability on nano-waterborne coating compsn surface of wetting base material (base material that especially has low-energy surface) in applying process.For the 0.01wt% solution of wetting agent in water, the surface tension that employed here wetting agent reduces water is higher than 1 dynes per centimeter.The wetting agent that is fit to comprises siloxane surface additive such as ZGK 5, comprises polyether-modified polydimethyl ZGK 5, the YSR 3286 of polyester modification; Fluorochemical surfactant such as Zonyl
TMFluorochemical surfactant (Zonyl is the trade mark of E.I.du Pont de Nemours and Co.); The tensio-active agent such as the Surfynol that are the basis with acetylene alcohol, divalent alcohol and terepthaloyl moietie chemical
TM61 tensio-active agents and Dynol
TM604 tensio-active agents (Surfynol and Dynol are Air Products and Chemicals, the trade mark of Inc.) and their mixture.The nano-waterborne coating compsn can contain 0.01-4wt%, preferred 0.1-4wt%, and more preferably 0.5-4wt% wetting agent is based on the weight of nano-waterborne coating compsn.
Nano-waterborne coating compsn of the present invention also contains 0.1-15wt% at least aly increases sliding auxiliary agent, based on the weight of nano-waterborne coating compsn.Increase the aqueous phase that sliding auxiliary agent can be dispersed or dissolved in the nano-waterborne coating compsn.Increase sliding auxiliary agent and help to reduce friction by the surface of the coating of waterborne compositions preparation.It is the dynamic friction coefficient below 3 or 3 that surface with low friction used herein has the value of measuring through ASTM D 1894 to glass.The nano-waterborne coating compsn preferably provides the coating with low-friction surface.Preferably, having value from the surface of the coating of this nano-waterborne coating preparation of compositions is the frictional coefficient below 1.5 or 1.5, and more preferably value is the frictional coefficient below 1.1 or 1.1.
Variously increase sliding auxiliary agent and be suitable for comprising wax, silicone additives in the nano-waterborne coating compsn, fluorinated additives and their mixture.The wax that is fit to comprises polyethylene wax, Poly Propylene Wax and paraffin wax.In one embodiment, the nano-waterborne coating compsn contains oxidized polyolefin waxes, as through at US6, and those of disclosed method preparation in 169,148.The silicone additives that is fit to comprises ZGK 5, modified polyorganosiloxane such as polyether-modified polydimethyl ZGK 5, the polydimethyl ZGK 5 of polyester modification; The hydroxyl-functional siloxanes.The fluorinated additives that is fit to comprises tetrafluoroethylene wax or contains the blend such as Fluo HT (the Micro Powders of tetrafluoroethylene wax; Inc.), and Aqua Polysilk 19 waxes (Micro Powders, Inc.); With Microspersion HT (Micro Powders, Inc.).Wax, silicone additives and fluorinated additives can be used as solution, dispersion-s or emulsion such as negatively charged ion wax emulsion, negatively charged ion paraffinic hydrocarbons/polyethylene emulsion or provide as powder such as polyethylene powders and modification synthetic wax powder.Binding substances or the mixture that can use wax, silicone additives and fluorinated additives are to provide the coating with low-friction surface and other desired properties.
Use from the external world of the coating of nano-waterborne coating preparation of compositions to cause being exposed to UV-light (UV), have the light that is lower than the 380nm wavelength especially, this can reduce the weather resistance of coating.In order to protect the destruction that is not received to be harmful to UV light by the coating of coating preparation of the present invention, the nano-waterborne coating compsn also contains UV light stabilizing agent, is referred to as " UV stablizer " here.The UV stablizer is to reduce or eliminate the material of UV light to the harmful effect of coating.The UV stablizer can absorption, scattering or reflection UV light.The UV stablizer can be that UV absorbs molecule such as bulky amine, substituted hydroxy-phenyl benzotriazole, benzotriazole, benzophenone, substituted vinyl cyanide, perhaps phenol-nickel composite; Perhaps pigment such as carbon black or titanium oxide.Other pigment that is fit to comprises solid bead and the microspheroidal pigment that contains space and vesica.The instance of solid bead pigment comprises PS and SE bead.The instance of microspheroidal pigment comprises the polymer beads that contains one or more spaces and the vesica polymer beads arranged, and they are disclosed in U.S.4,427,835; U.S.4,920,160; U.S.4,594,363; U.S.4,469,825; U.S.4,468,498; U.S.4,880,842; U.S.4,985,064; U.S.5,157,084; U.S.5,041,464; U.S.5,036,109; U.S.5,409,776; And U.S.5, in 510,422.Water-borne coatings of the present invention can contain the UV stablizer of 0.01-20wt%, and preferably the UV stablizer of 0.02-15wt% and more preferably the UV stablizer of 0.03-10wt% are based on the weight of nano-waterborne coating compsn.
Nano-waterborne coating compsn of the present invention also contains the non-photosensitivity nano particle of significant quantity and the surface-modifying agent that a kind of tensio-active agent is formed, and said nano particle exists so that remaining hydrophilic coating to be provided from the teeth outwards with effective amount.Nanoparticle system can comprise and be used for common crust modification purpose to produce the material of the multi-usage effect of hoping; Compsn, equipment, apparatus; Program; Method, condition etc., said effect comprise that moistening and thin layer formation property, rapid drying, even drying, decontamination, automatically cleaning, surface friction modification, the actives of raising discharge, alleviate the functions such as transparency of wear-out failure and raising.Non-photosensitivity nano particle according to the invention is selected from inorganic, metal oxide, natural clay, artificial clay and its mixture.Wherein said artificial clay is selected from stratiform hydrosilicate, silicofluoride, mica-polynite, and hydrotalcite, lithium magnesium silicate or its mixture, described stratiform hydrosilicate is moisture layer aluminium silicate.
The non-photosensitivity nano particle of described significant quantity is less than or equal to the 5wt% of said compsn, preferably is less than or equal to the 1wt% of said compsn.The add-on of nano particle is controlled at the significant quantity within 5%, controls production cost on the one hand, also can reach the premium properties that nano paint should possess simultaneously.
Nano particle, being defined as diameter is about 400 nanometers or littler particle, is very important technically, very little because their grain husk grain is formed size, has novel and member, coating and equipment beneficial property so be used to make.Can produce the nano particle of particle diameter economically for the about 400nm of about 1nm-.In the present invention, the size-grade distribution of nano particle can drop on about 1nm or littler-less than about 400nm, perhaps from about 1nm-less than about 100nm, perhaps from about 1nm less than in about 50nm scope Anywhere.For example, the artificial silicate of stratiform can have the median size of about 25 nanometers, and its size-grade distribution can change between the about 40nm of about 10nm-usually.Perhaps, nanometer is drawn and also can be comprised and draw the footpath to be about 1nm or littler-Yue 100nm, perhaps from crystal or the amorphous particle of the about 50nm of about 1nm-.Nanotube can comprise that up to 1 cm long perhaps particle diameter is the structure of about 1nm or littler-Yue 50nm.
The nano-waterborne coating compsn can be chosen wantonly and contain pigment.The nano-waterborne coating compsn can contain 0-25wt% pigment, and the preferably pigment of 0.5-15wt% and the more preferably pigment of 1-10wt% are based on the weight of nano-waterborne coating compsn.The pigment that is fit to comprises carbon black; Titanium oxide; Iron pigment such as solid oxidation iron; Weisspiessglanz pigment; Barium pigment; Calcium pigment; Zirconium pigment; Chrome pigment; Magnesium pigment; Lead pigments; Zinc sulphide; Lithopone; Phthalocyanine blue (phthalo blue); Phthalocyanine green (phthalo green); Metallic pigment such as aluminium; Pearly pigment; Opalescence pigment; Luster pigment; With solid bead and the microspheroidal pigment of plastic pigment as containing space and vesica.
Optional is can flatting agent be joined in the nano-waterborne coating compsn so that the coating with low-level glossiness to be provided.The nano-waterborne coating compsn can contain the 0-20wt% flatting agent, and preferably 0.5-15wt% flatting agent and more preferably 1-10wt% flatting agent are based on the weight of nano-waterborne coating compsn.The flatting agent that is fit to comprises silica, talcum, pottery, clay, heavy-metal soap, zeyssatite, glass sphere and their mixture.In one embodiment, the nano-waterborne coating compsn contains the silica flatting agent of 2-10wt%, based on the weight of nano-waterborne coating compsn.
The nano-waterborne coating compsn can be chosen wantonly and contain catalyzer with the crosslinking reaction between the functional group of the carboxylic acid group that promotes at polyether polyols with reduced unsaturation and linking agent.Can in mixing step, catalyzer be joined in the nano-waterborne coating compsn to prepare the nano-waterborne coating compsn or can before being about to the paint base material, join in the nano-waterborne coating compsn.
The solids content of nano-waterborne coating compsn generally is in 20-50wt% solid scope, based on the weight of nano-waterborne coating compsn.Can prepare the nano-waterborne coating compsn with high content of solid, be condition with the availability with highly filled component with applying required viscosity.Also can use the solids content that is lower than 20wt%, but need a large amount of water of evaporation with the drying nano water-based paint compositions.
The pH of nano-waterborne coating compsn generally is in the scope of 6.5-10; Preferably in the scope of 7-9; More preferably in the scope of 8-9, with increase polyether polyols with reduced unsaturation in the nano-waterborne coating compsn stability and make the carboxylic acid group of the polyether polyols with reduced unsaturation before applying and the crosslinking reaction between the linking agent reduce to minimum.Can use volatile alkali to regulate the pH of nano-waterborne coating compsn.The volatile alkali that is fit to comprises ammoniacal liquor, low-grade alkylamine, trolamine, 2-dimethylaminoethanol, N-methylmorpholine, quadrol and morpholine.
The nano-waterborne coating compsn can be chosen wantonly and contain common coatings additive(s) such as biocide, coalescing agent, filler, rheology modifier or thickening material, tensio-active agent, buffer reagent, neutralizing agent, freeze thawing additive, wet limit auxiliary agent, wetting agent, antifoams, dispersion agent and inhibitor.
The nano-waterborne coating compsn can prepare through merging various components simultaneously at blended.The interpolation order of component is not important.In the mixing step of various components, the pH of mixture preferably remains on the value more than 6.5 or 6.5.PH can be through adding acid or alkali is regulated.Preferably, pH raises with volatile alkali.
One of the object of the invention also is to provide a kind of method for preparing coated substrate, may further comprise the steps:
A) preparation contains each described nano paint compsn of claim 1 ~ 7;
B) said nano-waterborne coating compsn is applied on the base material;
C) dry said nano-waterborne coating compsn or make himself drying so that the precrosslink coated substrate to be provided; With
D) solidifying said precrosslink coated substrate or make himself solidifies so that said coated substrate to be provided.。
Can use this nano-waterborne coating compsn to apply various base materials, comprise plastics, elastomerics, rubber, timber, metal, paper, concrete, masonry, concrete, leather and textiles.The nano-waterborne coating compsn is particularly suitable for elastomer or rubber substrate such as rubber, comprises acrylic-nitrile rubber, butyl rubber, neoprene, chlorosulfonated polyethylene rubber, ethylene-propylene rubber, ethylene-propylene-elastoprene, halobutyl rubber, halogenation paracril, synthetic polyisoprene, tree elastomer, X 050, paracril, polyacrylic rubber; Polyurethane elastomer; Thermoplastic elastomer such as polyamide block copolymer, polyester block copolymer, polystyrene block copolymer, block polymers of polyurethane and polypropylene/ethylene-propylene copolymer blend; TPO; Polysulphide; Epoxypropane polymer; Epichlorohydrin polymers; With the phosphonitrile fluoroelastomer.Base material preferentially is selected from chlorosulfonated polyethylene rubber, ethylene-propylene rubber, ethylene-propylene-elastoprene, halogenation paracril, thermoplastic elastomer, TPO, epoxypropane polymer or epichlorohydrin polymers.Ethylene-propylene-elastoprene is special preferred substrate.
Base material with low-energy surface as EPDM through applying primer base, being exposed to UV light, corona discharge or plasma body and carrying out pre-treatment to increase surface energy.Compsn of the present invention can be applied over base material with pretreating surface or the base material with untreated low-energy surface.
Common method of application like brushing, roller coat, blade coating, dip-coating, curtain coating and spraying method, can use like air atomizing spraying, the spraying of air boosting, vigour spraying, the spraying of high volume, low pressure and the Airless spraying of air boosting in the method for the invention.The wet coat-thickness of the nano-waterborne coating compsn that is applied can be 5um-150um.The nano-waterborne coating compsn can be used as on single coating or the overbrushing layer paint base material.Preferably, apply the nano-waterborne coating compsn of single coating.Institute's nano-waterborne coating compsn that applies can come drying through heating, or as selection, the nano-waterborne coating compsn oneself that can be applied at one's discretion is dry.Can use the wet coating of convection current, conduction and radiant heating drying nano water-based paint compositions.The suitable temperature of the dry nano-waterborne coating compsn that is applied is 10-120 ℃.The base material that comprises the dry coating of nano-waterborne coating compsn is called as " coated substrate of precrosslink ", can solidify so that coated substrate of the present invention to be provided through the coated substrate of heating precrosslink.Be suitable for crosslinked temperature and be included in the temperature in the 20-300 ℃ of scope.Can change the heat-up time of crosslinked usefulness according to the type of linking agent, the thickness and the crosslinking temperature of coating.Can be lower than 1 minute in greater than 1 hour scope the typical heat-up time of crosslinked usefulness.In addition, the nano-waterborne coating compsn that is applied can carry out drying and crosslinked simultaneously.
The invention provides coating with low-friction surface.Low-friction surface used herein is meant the surface with low-friction coefficient.In many application of the coating that comprises the weather strip that for example is used for automobile, the coating with low-friction surface is an ideal.Weather strip in automobile can be used for being provided at the sealing between two assemblies of car body.For example, the weather strip that is provided at the sealing between window-glass and the doorframe generally has the coating of low-friction surface so that under the situation of least resistance, reduce or the rising window-glass.Coating on weather strip also provides the resistivity from the degraded that wearing and tearing produced of moving of window-glass.In addition, also must in wide region, temperature keep flexible in the coating on the weather strip so that under-40 ℃ temperature, sealing is provided.
Embodiment
In one embodiment, nano-waterborne coating compsn paint is comprised on the elastomer substrates of EPDM rubber drying and crosslinked.The elastomer substrates that applies can be used as the weather strip of vehicle such as car and truck.Other purposes of elastomer base material comprises the pad or the packing ring of family expenses weather strip, industrial weather strip, windshield wiper blade and various goods such as luggage.
Embodiment 1-nano-waterborne coating preparation of compositions
Prepare nano-waterborne coating compsn of the present invention through being blended in the material of table 1.1 in enumerating, keep the pH more than 6.5 through adding ammoniacal liquor simultaneously.The nano-waterborne coating compsn has 42% solids content and 8.0 pH.
The composition of table 1. nano-waterborne coating compsn
The applying and testing of embodiment 2-nano-waterborne coating compsn
Through using the wire-wound rod blade coating, the nano-waterborne coating compsn of embodiment 1 is applied on untreated 15cm * 15cm moulding EPDM rubber substrate.The temperature coat-thickness is 75um.Dry sample solidifies 2 minutes so that coated substrate of the present invention to be provided at 245 ℃.
Estimate the performance of coated substrate according to following TP.
Come and go the weather resistance that scrub test SP TP88 (Standard Products) estimates coated substrate according to toluene.At curing test in back 24 hours coated substrate.Receivable weather resistance is 200 or is higher than 200 round-robin values.
Low temperature flexibility according to Ford WSB-M2D49A2 test evaluation coated substrate.Coated substrate is exposed to-40 ℃ temperature and reaches 16 hours.Receivable low temperature flexibility is not have crack or forfeiture bounding force.
The TP of measuring frictional coefficient is ASTM D 1894.
Comparative Examples is carried out above-mentioned applying and testing with the disclosed coating of CN 1232593C.Have following test-results:
Test-results shows, nano-waterborne coating compsn of the present invention provides and have more IMAGE, better snappiness at low temperatures and low-friction surface the base material of (characterizing to be lower than 3 frictional coefficient).The nano-waterborne coating compsn has untreated EPDM rubber, i.e. the good bounding force of low-energy surface.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. nano-waterborne coating compsn comprises based on the weight of said nano-waterborne coating compsn:
(a) at least a polyether polyols with reduced unsaturation of 10-70wt%, wherein said polyether polyols with reduced unsaturation contains at least two carboxylic acid groups;
(b) at least a linking agent of 1-60wt%;
(c) at least a wetting agent of 0.01-4wt%;
(d) 0.1-15wt% at least a increases sliding auxiliary agent;
(e) the UV stablizer of 0.01-20wt%; With
(f) surface-modifying agent of the non-photosensitivity nano particle of significant quantity and a kind of tensio-active agent composition; Said nano particle exists so that remaining hydrophilic coating to be provided from the teeth outwards with effective amount, and wherein said non-photosensitivity nano particle is selected from inorganic, metal oxide, natural clay, artificial clay and its mixture.
2. compsn according to claim 1, wherein said polyether polyols with reduced unsaturation has the acid number in the 5-50 scope.
3. compsn according to claim 1 further comprises the flatting agent of 0.5-20wt%.
4. compsn according to claim 1, wherein said linking agent Han You oxazolinyl.
5. compsn according to claim 1, the non-photosensitivity nano particle of wherein said significant quantity is less than or equal to the 5wt% of said compsn, preferably is less than or equal to the 1wt% of said compsn;
Preferably, the size-grade distribution of said non-photosensitivity nano particle is 1nm ~ 400nm, preferred 1nm ~ 10nm, further preferred 2nm ~ 50nm.
6. compsn according to claim 1, wherein said artificial clay is selected from the variant and the isomorphous substitution thing of kaolin, polynite/terre verte, illite, said artificial clay family, or its mixture.
7. compsn according to claim 1, wherein said tensio-active agent are selected from AS, cats product, nonionogenic tenside, amphoterics, zwitterionics and its mixture.
8. method for preparing coated substrate may further comprise the steps:
A) preparation contains each described nano paint compsn of claim 1 ~ 7;
B) said nano water-based paint compositions is applied on the base material;
C) dry said nano water-based paint compositions or make himself drying so that the precrosslink coated substrate to be provided; With
D) solidifying said precrosslink coated substrate or make himself solidifies so that said coated substrate to be provided.
9. method according to claim 8, wherein said base material are selected from chlorosulfonated polyethylene rubber, ethylene-propylene rubber, ethylene-propylene-elastoprene, halogenation paracril, thermoplastic elastomer, TPO, epoxypropane polymer and epichlorohydrin polymers.
10. method according to claim 8, wherein said coated substrate have the frictional coefficient below 3 or 3.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277696A (en) * | 2014-10-29 | 2015-01-14 | 安徽朗凯奇建材有限公司 | High-weather-resistance self-cleaning waterproof coating and preparation method thereof |
| CN105722734A (en) * | 2013-11-18 | 2016-06-29 | 罗伯特·博世有限公司 | Windscreen wiper device for a vehicle |
| CN106148579A (en) * | 2016-08-30 | 2016-11-23 | 晋江市永建皮革制品有限公司 | A kind of antibacterial leather of resistance to wet rubbing and processing technology thereof |
| CN106232752A (en) * | 2014-05-15 | 2016-12-14 | 关西涂料株式会社 | Aluminium base aqueous primer composition |
| CN107955486A (en) * | 2017-12-13 | 2018-04-24 | 苏州赛斯德工程设备有限公司 | A kind of antifouling water-based paint compositions and preparation method thereof |
| JP2018144267A (en) * | 2017-03-01 | 2018-09-20 | 凸版印刷株式会社 | Decorative sheet, transparent resin sheet, and method for producing them |
| CN109561786A (en) * | 2016-08-04 | 2019-04-02 | 德隆吉器具有限公司 | Syringe unit for coffee machine |
| CN112480728A (en) * | 2020-12-01 | 2021-03-12 | 东莞大宝化工制品有限公司 | Preparation method of inorganic coating |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105722734A (en) * | 2013-11-18 | 2016-06-29 | 罗伯特·博世有限公司 | Windscreen wiper device for a vehicle |
| CN106232752A (en) * | 2014-05-15 | 2016-12-14 | 关西涂料株式会社 | Aluminium base aqueous primer composition |
| CN104277696A (en) * | 2014-10-29 | 2015-01-14 | 安徽朗凯奇建材有限公司 | High-weather-resistance self-cleaning waterproof coating and preparation method thereof |
| CN109561786A (en) * | 2016-08-04 | 2019-04-02 | 德隆吉器具有限公司 | Syringe unit for coffee machine |
| CN106148579A (en) * | 2016-08-30 | 2016-11-23 | 晋江市永建皮革制品有限公司 | A kind of antibacterial leather of resistance to wet rubbing and processing technology thereof |
| JP2018144267A (en) * | 2017-03-01 | 2018-09-20 | 凸版印刷株式会社 | Decorative sheet, transparent resin sheet, and method for producing them |
| JP7007546B2 (en) | 2017-03-01 | 2022-01-24 | 凸版印刷株式会社 | Decorative sheets and transparent resin sheets, and their manufacturing methods |
| CN107955486A (en) * | 2017-12-13 | 2018-04-24 | 苏州赛斯德工程设备有限公司 | A kind of antifouling water-based paint compositions and preparation method thereof |
| CN112480728A (en) * | 2020-12-01 | 2021-03-12 | 东莞大宝化工制品有限公司 | Preparation method of inorganic coating |
| CN112480728B (en) * | 2020-12-01 | 2021-12-28 | 东莞大宝化工制品有限公司 | Preparation method of inorganic coating |
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