CN105482586A - Water-based bi-component white primer and preparation method thereof - Google Patents
Water-based bi-component white primer and preparation method thereof Download PDFInfo
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- CN105482586A CN105482586A CN201510998213.2A CN201510998213A CN105482586A CN 105482586 A CN105482586 A CN 105482586A CN 201510998213 A CN201510998213 A CN 201510998213A CN 105482586 A CN105482586 A CN 105482586A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides a water-based bi-component white primer. The water-based bi-component white primer comprises two components A and B, wherein the component A comprises the following components in parts by weight: 200-300 parts of water-based hydroxy acrylic resin, 1-4 parts of an in-tank fungicide, 10-25 parts of a wetting dispersant, 4-15 parts of a defoaming agent, 5-15 parts of a film-forming aid, 150-300 parts of wollastonite, 350-500 parts of fillings, 10-30 parts of a rheology controller, 5-10 parts of a base material wetting agent and 50-150 parts of water; the component B is a water-based polyisocyanate curing agent. The dually-curable water-based resin with high solid content and low hydroxyl value is utilized, is matched with the specific water-based polyisocyanate curing agent and is supplemented with the fillings including wollastonite and white barium powder to form a special thixotropic thickening system, so that the storage stability of products is improved, and the special thixotropic thickening system is excellent in construction performance, environmentally friendly and ultralow in VOC content and further has the characteristics of ultrahigh solid content, high drying speed and hardness, good collapse resistance, high crosslinking density, good solvent resistance and the like.
Description
Technical field
Coating composition field of the present invention, is specifically related to a kind of coating composition based on acrylic resin and preparation method thereof.
Background technology
White application is base material mainly with fiberboard, fiberboard has the features such as loose, easy oil suction, this just requires that coating used needs to have excellent filling properties, and the main coating system adopted mostly is solvent borne polyurethane (PU) paint and solvent-borne type unsaturated polyester (PE) paint at present.Such as application number be CN201410840886.0 patent discloses a kind of anti-sag resistance is good, smell is low, whiteness is high environmental protection clean taste PU height light based white primer, patent that the number of applying for a patent is CN201110234047.0 discloses a kind of novel high closeness unsaturated polyester based white primer and preparation method thereof, and application number is that the patent of CN201410660977.6 proposes a kind of cracking resistance unsaturated polyester based white primer.Although above-mentioned coating fillibility is good, all contain a large amount of organic solvents, the feature of environmental protection can not meet the demands for environment serious now and topsoil.
After solvent based coating application, the organic solvent of release is very many, very serious to environment and topsoil, especially puts into effect along with to the regulation of emission limit set, and coating industry is needed exploitation badly and discharged the less product of volatile solvent.
Water-borne coatings is a new force of coating industry, because its volatile organic compounds (VOC) content is extremely low and save the energy and become the main flow direction of modern coatings industrial development.Patent application (CN201010154767.1) a kind of multifunctional water-based white primer and preparation method thereof, patent application (CN201010529886.0) white waterborne wood base coat for medium density fiberboard and preparation technology thereof are proposed the water-based white primer of environment-friendly type, but solids content is less than 60%, fillibility is general, and hardness does not have PU to paint yet, can not accomplish to close for one time and directly do finish paint above afterwards.
At present, be used in product solids content fiberboard doing the application of Totally-enclosed-type white both at home and abroad and can only accomplish about 50%, can not accomplish that only construction priming paint directly can do the effect of finish paint; And rate of drying is general, within a lot of one day, can only constructs and paint for one time, from construction need the time of 2-3 days even longer to finish paint of having constructed.
Summary of the invention
For this area Problems existing, the invention provides the aqueous double-component based white primer and preparation method thereof of a kind of safety, environmental protection, the features such as this aqueous double-component based white primer also has ultra-high solids, fast drying, hardness is high, slump resistance is good, are mainly used in the real look application of density board.
The concrete technical scheme realizing the object of the invention is:
A kind of aqueous double-component based white primer, is made up of A, B two components,
Component A is made up of following component by weight: water based acrylic resin 200 ~ 300 parts, 1 ~ 4 part, sterilant in tank, wetting dispersing agent 10 ~ 25 parts, defoamer 4 ~ 15 parts, film coalescence aid 5 ~ 15 parts, wollastonite 150 ~ 300 parts, filler 350-500 part, rheology control agent 10 ~ 30 parts, substrate wetting agents 5-10 part, 50 ~ 150 parts, water; B component is water-based polyisocyanate curing agent;
Component A: the mass ratio of B component is 100:3 ~ 5.
Preferably, described water based acrylic resin is solid content 40 ~ 50%, hydroxy radical content is the water based acrylic resin of 1.0 ~ 2.0%.
The coating system that the present invention proposes, selects low hydroxyl value acrylic ester aquosity dispersion as the matrix resin of based white primer, and requires that this resin solid content is higher than 48%, so just can have better fillibility and high performance-price ratio; Hydroxy radical content, not higher than 2%, belongs to two curing type resin, both can be cured by self-crosslinking, can increase compact in paint film further again with linking agent reaction.
Wherein, in described tank, sterilant is selected from one or both in water-based chlormethylisothiazo,ine ketone (CMI), aqueous dimethylformamide isothiazolinone (MI) or the bronocot not containing N-/O-formal; Described wetting dispersing agent is one or both in the wetting dispersing agent of sodium polyacrylate salt, modified polypropene acid solution class or modified polycarboxylic acid salt; Described film coalescence aid be selected from dipropylene (DPnB), butyl (DB), 2,2,4-trimethylammonium-1,3 pentanediol mono isobutyrates or tripropylene glycol butyl ether (TPnB) one or both.
Wherein, described wollastonite is coating level wollastonite powder; Described filler is one or more in barium white powder, talcum powder, light calcium carbonate, water-ground limestone or transparent powder, the granularity of filler below 625 orders, more than 2000 orders.
The wollastonite of low oil absorption ferric can increase mechanicalness, and it mainly forms is CaSiO
3or CaOSiO
2, it is containing SiO
245 ~ 55%, CaO40 ~ 50%, Chang Hantie, manganese, magnesium.Wollastonite is a kind of triclinic(crystalline)system, thin platelike crystal, inorganic needle-like mineral, aggregate radially or threadiness.Have glass and pearliness, water absorbability is less than 4%.Oil absorbency is low, specific conductivity is low, insulativity is better.Hardness 4.5 ~ 5.5, density 2.75 ~ 3.10g/cm
3.Wollastonite is nontoxic, resistance to chemical attack, thermostability and dimensional stabilizing are good, mechanical property and electrical property excellent and there is certain strengthening action.There is very high whiteness simultaneously.Coating level wollastonite powder is applied to the toughness and wearing quality that can improve coating after in waterborne edge sealing paint, keep coating surface smooth with and good glossiness, improve anti-scrubbing and weathering resistance performance, reduce the oil number of coating and keep alkalescence, there is resistance to corrosion.Make coating can obtain better physical strength, increase weather resistance, increase adherence and corrosion resistance, also make aqueous double-component based white primer have good fraction of coverage and sticking power.The barium white powder that the present invention selects has fabulous opacifying power, collocation calcium carbonate and talcum powder, can not need to add titanium dioxide and namely can have excellent opacifying power, reduce the cost of product greatly, improve the cost performance of product, enhance one's market competitiveness.
Particularly, described filler is two kinds in barium white powder, talcum powder, water-ground limestone, and the mass ratio of two kinds of fillers is 1:0.8 ~ 1.2; Or be talcum powder, barium white powder and water-ground limestone, its mass ratio is 0.5 ~ 0.9:0.8 ~ 1.2:1.Barium white powder has good opacifying power, but grinability and fillibility are generally, and talcum powder oil number is large, can not add in a large number, but can well improve grinability; Calcium carbonate has certain opacifying power, fillibility, but grinability is bad; Two or three filler collocation uses, and serves the optimal effectiveness of polishing, covering, filling three equilibrium.
Wherein, described defoamer is selected from one or both in polysiloxane-polyether copolymer emulsion class, polypropylene glycols, polyoxyethylene glycol-hydrophobic solid-polysiloxane mixture class or mineral oil based defoamer; Described rheology control agent be selected from aqueous polyamide wax, water-based wilkinite or synthesizing flaky silicate one or both; Described substrate wetting agents is one or both in polydimethylsiloxane, polysiloxane-polyether copolymer, nonionic class tensio-active agent, fluorocarbon polymer class wetting agent.
Wherein, described water-based polyisocyanate curing agent is one or both in water-based hexamethylene diisocyanate (HDI) polymer, water-based isophorone diisocyanate (IPDI) polymer, water-based HDI/IPDI mixed polymerization body;
Further preferably, described component A is made up of following component by weight: water based acrylic resin 250 parts, 1 ~ 4 part, sterilant in tank, wetting dispersing agent 18-20 part, defoamer 4-6 part, film coalescence aid 8-10 part, wollastonite 180-220 part, filler 300-400 part, rheology control agent 15-18 part, substrate wetting agents 5-10 part, water 100-120 part.
The preparation method of the aqueous double-component based white primer that the present invention proposes, adopts following steps to prepare component A:
1) first sterilant, defoamer, wetting dispersing agent in 90 ~ 98% in water consumption, film coalescence aid, tank are weighed in dispersion cylinder, start to stir;
2) under agitation add wollastonite powder and filler, disperse 10 ~ 20 minutes;
3) under agitation add water based acrylic resin and substrate wetting agents, be then stirred to evenly;
4) add remaining water and rheology control agent, stir and adjust viscosity to 85 ~ 90KU/25 DEG C, obtaining component A;
According to component A during use: the ratio mixing of B component=100:3 ~ 5.
Wherein, described step 2) in, under the moderate-speed mixer of 800-1000 rev/min, add wollastonite powder and filler, then disperse 15 minutes under the high-speed stirring of 1001-1500 rev/min; Described step 3) in, after adding water-base resin and substrate wetting agents, stir 10 minutes under the middling speed of 800-1000 rev/min.
The present invention has the following advantages:
The aqueous double-component based white primer solids content that the present invention proposes is up to 70%, VOC (organic volatile compound) content is lower than 10 grams per liters, and the 120 minutes time of polishing, dry 24 hours hardness can reach HB, within 48 hours, hardness can reach H, and after dry, paint film is smooth does not subside.Density board does not need seal coat of constructing, and only need thick painting this invention based white primer to get final product good closed substrate, drying can there will not be at upper surface construction PU, NC equal solvent type coating end problem of stinging in 24 hours, has good solvent resistance.
The present invention adopt can dual cure highly filled low hydroxyl value crosslinkable reaction water-base resin, two component cross-linking system products of the special polyisocyanate curing agent of collocation water-based, and be aided with wollastonite and barium white powder is filler, special thixotroping thickened systems, while improving product stock stability, there is excellent workability, thus reach this aqueous double-component based white primer in satisfied green, environmental protection, while zero VOC content, can also reach and there is ultra-high solids, fast drying, hardness is high, slump resistance is good, cross-linking density is high, the features such as solvent resistant model.The highly filled low hydroxyl value water-borne acrylic resin of dual cure have fast drying, grinability good, need the features such as polyisocyanate curing agent proportioning is few, and after reacting with polyisocyanate curing agent, can compact in paint film be increased, improve hardness, the solvent resistance of paint film.
1, the based white primer that the present invention proposes has ultralow VOC content, without free TDI, endangers minimum to environment and people and animals;
2, high solids content, high fillibility, hardness is excellent does not sink; Only need spraying can play filling properties one time, can finish paint covering with paint be carried out
3, aqueous double-component system, does not ftracture to good, the fabulous sticking power of base material closure, compact in paint film, can support the use with various finish paint;
4, quick-drying, easily polishing, not scab paper, easy construction.The preparation method of aqueous double-component based white primer of the present invention is simple, easily operates, and harmless to operator.Spraying application after only needing the water-based special curing agent of interpolation 3% ~ 5% to stir during use.
Embodiment
Following case study on implementation for illustration of the present invention, but is not used for limiting the scope of the invention.
Be to illustrate that raw material of the present invention has availability to the buying situation of various raw material below, and should be used for limiting scope of the present invention.
Water based acrylic resin is the NeoCrylXK-102 (non-volatile content 40% of DSM N. V., solid hydroxy radical content 1.5%), the Craymul2171 (non-volatile content 43% of Crayvalley company, solid hydroxy radical content 1.3%) or the AlberdingkAC31 (non-volatile content 50%, solid hydroxy radical content 1.9%) of AlberdingkBoley company;
Sterilant is selected from ParmetolA28 (its main component is CMI/MI and bronocot mixture), the ParmetolK20 (its main component is CMI/MI mixture) of German Shu Mei company or the LXE of ROHM AND HAAS or Britain Shu Er MV;
Wetting dispersing agent is Hydropalat640A (sodium polyacrylate salt), the TEGODispers750W (modified polypropene acid solution class) of German Di Gao Chemical Co., Ltd. production or the SokalanPA30CL (modified polycarboxylic acid salt) of German BASF Chemical Co., Ltd. production that Hai Chuan Chemical Co., Ltd. of Shenzhen produces.
Film coalescence aid is one or both in dipropylene (DPnB), butyl (DB), 2,2,4-trimethylammonium-1,3 pentanediol mono isobutyrates or tripropylene glycol butyl ether (TPnB); Be selected from the DALPADTMC (tripropylene glycol butyl ether) of Tao Shi or Yi Siman chemistry
ester alcohol;
Substrate wetting agents is BYK346, BYK348 (belonging to polyether-modified polydimethylsiloxane class) of German BYK company, the TEGOWetKL245 (belonging to polysiloxane-polyether copolymer class) of EVONIK company of Germany, the easy happy FS-204E of painting (acetylenic diols belongs to nonionic class) of the zonylFS-610 (belonging to fluorocarbon polymer class) of E.I.Du Pont Company, the Surfynol104E of U.S.'s aerochemistry or the luxuriant and rich with fragrance chemistry of match;
The BYK024 (polyoxyethylene glycol-hydrophobic solid-polysiloxane mixture class) that defoamer is the A10 (nano polysilicon oxygen alkane-copolyether emulsion class) of Kening Co., Ltd of the U.S., the SN-154 (polypropylene glycols) of Kening Co., Ltd, German Bi Ke chemistry (Asia-Pacific) private limited partnership produce or the Foamster309A (mineral oil base class) that Hai Chuan Chemical Co., Ltd. of Shenzhen produces.
Filler is CC800 (granularity 800 order), the barium white powder DG-F38 (D97 is 14.8 μm) of wound space chemical industry, the CMS-555 talcum powder (median size 12 μm) of Heshan chemical industry of Pingxiang City calcium carbonate Industrial Co., Ltd.;
Rheology control agent is the AQ870 aqueous polyamide wax of Supreme Being Si Balong company or the synthesizing flaky silicate LaponiteSL25 of Rockwood company;
Wollastonite is coating level wollastonite powder, purchased from the SC1250 of wide Fujian material.
Water-based polyisocyanate curing agent is the BayhydurXP2655 of Beyer Co., Ltd, the EASAQUA of Paasche holder company
tMthe BURNOCKDNW-5500 of XD803 or DIC company.
Embodiment 1:
The composition of aqueous double-component based white primer component A is in table 1.
Table 1, embodiment 1A component form:
| Composition | Weight (kg) |
| Neo Cryl XK-102 | 250 |
| DALPADTM C | 10 |
| MV | 2 |
| BYK024 | 5 |
| SN-154 | 6 |
| Hydropalat 640A | 20 |
| SC1250 wollastonite powder | 200 |
| CC800 calcium carbonate | 200 |
| CF-38F barium white powder | 180 |
| SL25 | 15 |
| FS204E | 5 |
| Deionized water | 107 |
Preparation method:
1) first 100kg water, 10kgDALPADTMC, 2kgMV, 5kgBYK024,6kgSN-154,20kgHydropalat640A are weighed in dispersion cylinder, start to stir;
2) under moderate-speed mixer, 180kgCF-38F barium white powder, 200kgSC1250 wollastonite powder, 200kgCC800 calcium carbonate is added, 1200 turns/min high speed dispersion 15 minutes;
3) under moderate-speed mixer, add 250kgNeoCrylXK-102 and 5kgFS204E, 800 turns/min moderate-speed mixer 10 minutes is to evenly;
4) add 15kgSL25 and 7kg deionized water, stir and adjust viscosity to 88KU/25 DEG C, continue moderate-speed mixer censorship after 5 minutes, filter and package after qualified.
B component: 30kgEASAQUA
tMxD803.
Embodiment 2: aqueous double-component based white primer component A
Table 2, embodiment 2A component form
Preparation method:
1) first 100kg water, 8kgTEXANOL, 3kgParmetolK20,4kgBYK024,8kgFoamster309A, 18kgSokalanPA30CL are weighed in dispersion cylinder, start to stir;
2) under moderate-speed mixer, 180kgCF-38F barium white powder, 210kgSC1250 wollastonite powder, 190kgCMS-555 talcum powder is added, 1500 turns/min high speed dispersion 15 minutes;
3) under moderate-speed mixer, add 250kgCraymul2171 and 5kgzonylFS-610,900 turns/min moderate-speed mixer 10 minutes is to evenly;
4) add 18kgSL25 and 6kg deionized water, stir and adjust viscosity to 90KU/25 DEG C, continue moderate-speed mixer censorship after 5 minutes, filter and package after qualified.
B component: 40kgBURNOCKDNW-5500;
Embodiment 3: aqueous double-component based white primer component A
Table 3, embodiment 3A component form:
Preparation method:
1) first 100kg water, 6kgDALPADTMC, 4kgDB, 2kgPParmetolA28,4kgBYK024,6kgSN-154,20kgTEGODispers750W are weighed in dispersion cylinder, start to stir;
2) under moderate-speed mixer, 180kgCF-38F barium white powder, 200kgSC1250 wollastonite powder, 50kgCMS-555 talcum powder, 150kgCC800 calcium carbonate is added, high speed dispersion 15 minutes;
3) under moderate-speed mixer, add 250kgAlberdingkAC31 and 6kgSurfynol104E, moderate-speed mixer 10 minutes is to evenly;
4) add 15kgAQ870 and 6kg deionized water, stir and adjust viscosity to 87KU/25 DEG C, continue moderate-speed mixer censorship after 5 minutes, filter and package after qualified.
B component: 30kgBayhydurXP2655;
Embodiment 4: aqueous double-component based white primer component A
The composition of table 4 embodiment 4A component
| Composition | Weight (kg) |
| Alberdingk AC 31 | 250 |
| DALPADTM C | 9 |
| MV | 2 |
| BYK024 | 5 |
| SN-154 | 5 |
| TEGO Dispers750W | 18 |
| SC1250 wollastonite powder | 180 |
| CMS-555 talcum powder | 90 |
| CF-38F barium white powder | 200 |
| CC800 calcium carbonate | 110 |
| AQ870 | 16 |
| Surfynol 104E | 8 |
| Deionized water | 107 |
Preparation method:
1) first 100kg water, 9kgDALPADTMC, 2kgMV, 5kgBYK024,5kgSN-154,18kgTEGODispers750W are weighed in dispersion cylinder, start to stir;
2) under moderate-speed mixer, 200kgCF-38F barium white powder, 180kgSC1250 wollastonite powder, 90kgCMS-555 talcum powder, 110kgCC800 calcium carbonate is added, high speed dispersion 15 minutes;
3) under moderate-speed mixer, add 250kgAlberdingkAC31 and 8kgSurfynol104E, moderate-speed mixer 10 minutes is to evenly;
4) add 16kgAQ870 and 6kg deionized water, stir and adjust viscosity to 88KU/25 DEG C, continue moderate-speed mixer censorship after 5 minutes, filter and package after qualified.
3, B component: 40kgBayhydurXP2655;
Test respectively embodiment 1-4 according to GB/T23999-2009 " indoor decorating use woodwork coating " standard, test result is as following table (table 5):
Table 5: standard testing result
Although above with general explanation, embodiment and test, the present invention is described in detail, and on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (10)
1. an aqueous double-component based white primer, is characterized in that, is made up of A, B two components,
Component A is made up of following component by weight: water based acrylic resin 200 ~ 300 parts, 1 ~ 4 part, sterilant in tank, wetting dispersing agent 10 ~ 25 parts, defoamer 4 ~ 15 parts, film coalescence aid 5 ~ 15 parts, wollastonite 150 ~ 300 parts, filler 350-500 part, rheology control agent 10 ~ 30 parts, substrate wetting agents 5-10 part, 50 ~ 150 parts, water; B component is water-based polyisocyanate curing agent;
Component A: the mass ratio of B component is 100:3 ~ 5.
2. aqueous double-component based white primer according to claim 1, is characterized in that, described water based acrylic resin is solid content 40 ~ 50%, hydroxy radical content is the water based acrylic resin of 1.0 ~ 2.0%.
3. aqueous double-component based white primer according to claim 1, it is characterized in that, in described tank, sterilant is selected from one or both in water-based chlormethylisothiazo,ine ketone (CMI), aqueous dimethylformamide isothiazolinone (MI) or the bronocot not containing N-/O-formal; Described wetting dispersing agent is one or both in the wetting dispersing agent of sodium polyacrylate salt, modified polypropene acid solution class or modified polycarboxylic acid salt; Described film coalescence aid be selected from dipropylene (DPnB), butyl (DB), 2,2,4-trimethylammonium-1,3 pentanediol mono isobutyrates or tripropylene glycol butyl ether (TPnB) one or both.
4. aqueous double-component based white primer according to claim 1, it is characterized in that, described wollastonite is coating level wollastonite powder, described filler is one or more in barium white powder, talcum powder, light calcium carbonate, water-ground limestone or transparent powder, and the granularity of filler is below 625 orders, more than 2000 orders.
5. aqueous double-component based white primer according to claim 4, is characterized in that, described filler is two kinds in barium white powder, talcum powder, water-ground limestone, and the mass ratio of two kinds of fillers is 1:0.8 ~ 1.2; Or be talcum powder, barium white powder and water-ground limestone, its mass ratio is 0.5 ~ 0.9:0.8 ~ 1.2:1.
6. aqueous double-component based white primer according to claim 1, it is characterized in that, described defoamer be selected from polysiloxane-polyether copolymer emulsion class, polypropylene glycols, polyoxyethylene glycol-hydrophobic solid-polysiloxane mixture class or mineral oil based defoamer one or both; Described rheology control agent be selected from aqueous polyamide wax, water-based wilkinite or synthesizing flaky silicate one or both; Described substrate wetting agents is one or both in polydimethylsiloxane, polysiloxane-polyether copolymer, nonionic class tensio-active agent, fluorocarbon polymer class wetting agent.
7. aqueous double-component based white primer according to claim 1, it is characterized in that, described water-based polyisocyanate curing agent is one or both in water-based hexamethylene diisocyanate (HDI) polymer, water-based isophorone diisocyanate (IPDI) polymer, water-based HDI/IPDI mixed polymerization body.
8. according to the arbitrary described aqueous double-component based white primer of claim 1 ~ 7, it is characterized in that, described component A is made up of following component by weight: water based acrylic resin 250 parts, 1 ~ 4 part, sterilant in tank, wetting dispersing agent 18-20 part, defoamer 4-6 part, film coalescence aid 8-10 part, wollastonite 180-220 part, filler 300-400 part, rheology control agent 15-18 part, substrate wetting agents 5-10 part, water 100-120 part.
9. the preparation method of the arbitrary described aqueous double-component based white primer of claim 1 ~ 8, is characterized in that, adopts following steps to prepare component A:
1) first sterilant, defoamer, wetting dispersing agent in 90 ~ 98% in water consumption, film coalescence aid, tank are weighed in dispersion cylinder, start to stir;
2) under agitation add wollastonite powder and filler, disperse 10 ~ 20 minutes;
3) under agitation add water based acrylic resin and substrate wetting agents, be then stirred to evenly;
4) add remaining water and rheology control agent, stir and adjust viscosity to 85 ~ 90KU/25 DEG C, obtaining component A;
According to component A during use: the ratio mixing of B component=100:3 ~ 5.
10. preparation method according to claim 9, is characterized in that, described step 2) in, under the moderate-speed mixer of 800-1000 rev/min, add wollastonite powder and filler, then disperse 15 minutes under the high-speed stirring of 1001-1500 rev/min; Described step 3) in, after adding water-base resin and substrate wetting agents, stir 10 minutes under the middling speed of 800-1000 rev/min.
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| CN106366804A (en) * | 2016-08-29 | 2017-02-01 | 广东花王涂料有限公司 | Double composition wash coat |
| CN106833327A (en) * | 2016-12-16 | 2017-06-13 | 吴中区穹窿山天仲高分子材料技术研究所 | A kind of bi-component waterborne antimicrobial paint and preparation method thereof |
| CN107286825A (en) * | 2017-05-09 | 2017-10-24 | 河北晨阳工贸集团有限公司 | Easy polishing aqueous two-component white priming paint and preparation method thereof |
| CN107987631A (en) * | 2017-11-16 | 2018-05-04 | 君子兰化工（上海）有限公司 | Anti- sagging high transparency aqueous double-component coating filler and preparation method thereof |
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| CN109897481A (en) * | 2017-12-07 | 2019-06-18 | 东莞丽利涂料有限公司 | It is used to form the water-based paint compositions, water base paint vehicle and the product containing the anti-muscle coating that rises of the anti-muscle coating that rises of wood substrate |
| CN110328126A (en) * | 2019-06-13 | 2019-10-15 | 厦门奈福电子有限公司 | A kind of aqueous carbon fiber coating and preparation method thereof and construction technology |
| CN111303747A (en) * | 2020-03-31 | 2020-06-19 | 广东华润涂料有限公司 | Two-component coating composition and articles made therefrom |
| CN112795294A (en) * | 2021-01-07 | 2021-05-14 | 湖南松井新材料股份有限公司 | Water-based paint, preparation method thereof, spraying method and product |
| CN113604096A (en) * | 2021-07-27 | 2021-11-05 | 上海深竹化工科技有限公司 | Fluorocarbon wetting agent compound system |
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| CN115960498B (en) * | 2022-09-21 | 2024-03-15 | 上海君子兰新材料股份有限公司 | Aqueous two-component solid color finishing paint for woodware and preparation method thereof |
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Application publication date: 20160413 |