CN116376418A - Water-based multi-component full-dumb skin-scratch-resistant clear finishing paint and preparation method thereof - Google Patents
Water-based multi-component full-dumb skin-scratch-resistant clear finishing paint and preparation method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003973 paint Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 74
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 239000004327 boric acid Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 23
- -1 sulfonate modified HDI trimer Chemical class 0.000 claims abstract description 22
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 21
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 20
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 19
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 19
- 239000002562 thickening agent Substances 0.000 claims abstract description 19
- 239000002966 varnish Substances 0.000 claims abstract description 15
- 239000000080 wetting agent Substances 0.000 claims abstract description 15
- 230000003678 scratch resistant effect Effects 0.000 claims abstract description 14
- 239000003607 modifier Substances 0.000 claims abstract description 9
- 125000005619 boric acid group Chemical group 0.000 claims abstract description 5
- 239000013530 defoamer Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 25
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- 229920013731 Dowsil Polymers 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 7
- DMKSVUSAATWOCU-HROMYWEYSA-N loteprednol etabonate Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)OCCl)(OC(=O)OCC)[C@@]1(C)C[C@@H]2O DMKSVUSAATWOCU-HROMYWEYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 239000000230 xanthan gum Substances 0.000 claims description 4
- 229920001285 xanthan gum Polymers 0.000 claims description 4
- 235000010493 xanthan gum Nutrition 0.000 claims description 4
- 229940082509 xanthan gum Drugs 0.000 claims description 4
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 3
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920002907 Guar gum Polymers 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 229940071826 hydroxyethyl cellulose Drugs 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000008033 biological extinction Effects 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of paint, and relates to a water-based multi-component full-matt skin scratch-resistant clear finishing paint and a preparation method thereof, wherein the clear finishing paint consists of a hydroxyl component, a curing agent component and a gloss regulator, and the molar ratio of-OH in the hydroxyl component to-NCO in the curing agent component is 1.5:1, the weight ratio of the hydroxyl component to the gloss modifier is 1: (1-3.5%); the hydroxyl component is: 70-80% of aqueous hydroxy polycarbonate resin, 10-20% of aqueous polyurethane resin, 2-4% of film forming auxiliary agent, 0.5-1% of defoamer, 0.3-0.5% of wetting agent, 0.2-0.5% of handfeel auxiliary agent, 0.4-0.8% of thickener and water which are added to 100%; the curing agent component is sulfonate modified HDI trimer; the gloss modifier is boric acid. The varnish can be used for extinction without adding extinction powder or wax powder, has good transparency, and the surface of a paint film is fine and smooth and has certain elasticity, and has the advantages of super-dumb property, scratch resistance and the like.
Description
Technical Field
The invention belongs to the technical field of coatings, relates to an environment-friendly coating, and in particular relates to an aqueous multi-component full-dumb skin scratch resistance clear finishing paint and a preparation method thereof.
Background
In recent years, environmental protection regulations are successively formulated for the emission of Volatile Organic Compounds (VOCs) in various countries, and national standards GB18581-2020 in China have strict standard requirements on the emission of VOCs in the paint. The VOC emission of the water paint is low, and meets the environmental protection requirements of the current country. In the aspect of adopting paint to decorate and beautify life, the aesthetic of modern people starts to change from the past high light to the matte, even ultra-low light effect. For common water paint, the paint film is matted to gloss of 1-3 degrees by common silica matting powder or wax powder, so that the paint film has poor transparency, the surface of the paint film is easily scratched by external scratch, the matting powder or wax powder layer is scratched, bright marks with different degrees are left on the surface of the matt coating, the surface of the paint film is damaged, the aesthetic property and the decorative effect of the coating are seriously affected, and the sensory experience of people is poor. Therefore, there is a need to develop a clear finish that achieves a matting effect without matting or wax powder.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a water-based multi-component full-matt scratch-resistant varnish and a preparation method thereof, wherein the water-based multi-component full-matt scratch-resistant varnish can be matted without adding matting powder or wax powder, has good transparency, is fine and smooth, and has certain elasticity; the varnish has the gloss of 2-3.5%, can not leave bright marks when the nail is scratched on the surface of a paint film, and has the advantages of super-dumb, scratch resistance, elasticity and the like.
The technical scheme of the invention is as follows:
the water-based multi-component full-matt scratch-resistant clear top coat consists of a hydroxyl component, a curing agent component and a gloss regulator, wherein the molar ratio of-OH in the hydroxyl component to-NCO in the curing agent component is 1.5:1, wherein the weight ratio of the hydroxyl component to the gloss modifier is 1: (1-3.5%);
the formula of the hydroxyl component comprises the following components in percentage by weight:
the curing agent component is sulfonate modified HDI trimer;
the gloss modifier is boric acid.
Preferably, the clear paint comprises a hydroxyl component, a curing agent component and a gloss modifier, wherein the hydroxyl component comprises the following components in percentage by weight: 73-77% of aqueous hydroxyl polycarbonate resin, 13-17% of aqueous polyurethane resin, 2.5-3.5% of film forming auxiliary agent, 0.5-0.8% of defoaming agent, 0.3-0.4% of wetting agent, 0.3-0.4% of handfeel auxiliary agent, 0.5-0.7% of thickening agent and water which are filled up to 100%; the curing agent component is sulfonate modified HDI trimer, and the hydroxyl component and the curing agent component are in accordance with n -NCO ：n -OH =1: 1.5, i.e., the molar ratio of-NCO functional groups in the hardener component to-OH functional groups in the hydroxyl component is 1:1.5; the gloss modifier is boric acid, and the weight ratio of hydroxyl component to boric acid is 1: (0.01-0.035).
Further, the solid content of the aqueous hydroxy polycarbonate resin is 40+/-1%, the pH value is 7-9, and the emulsion particle size is below 80 microns.
Preferably, the aqueous hydroxy polycarbonate resin is S7800 of the Zhendechen paint group Co., ltd.
Further, the solid content of the aqueous polyurethane resin is 40+/-1%, the pH value is 7-9, the minimum film forming temperature is 44 ℃, and the fineness is below 30 microns.
Preferably, the aqueous polyurethane resin is manufactured by Wanhua chemical Co., ltd, and the brand name is Lacper 4210.
Further, the film forming auxiliary agent is selected from one or more of BCS, DPM, DPNB; wherein BCS, purchased from DOW.
Further, the defoamer is one or two of Airex 902W or Foamex 825, wherein Airex 902W is purchased from Digao (Tego); the main component of Airex 902W and Foamex 825 is polyether polysiloxane copolymer emulsion.
Further, the wetting agent is Tain 4100, purchased from Tego; the wetting agent is a siloxane-based gemini surfactant, and the main component of Twain 4100 is a polysiloxane mixture.
Furthermore, the handfeel aid is Dowsil 211S, which is purchased from DOW in the United states; the main component of Dowsil 211S is an ultra-high molecular weight silicone aqueous dispersion.
Further, the thickener is at least one of hydroxymethyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, hydroxyethyl cellulose, guar gum, xanthan gum and associative polyurethane thickener; wherein the associative polyurethane thickener is polyether polyurethane associative thickener, rhoalate 299 is selected from Elements.
The formula component design of the water-based multi-component full-matt scratch-resistant varnish aims at solving the defects of poor transparency, easy scratch and the like of the matt varnish. Adding water-soluble boric acid into the hydroxyl component, coordinating the boric acid with hydroxyl in thickening agents such as cellulose, xanthan gum and the like after the boric acid is dissolved in water, and crosslinking the boric acid to coarsen the particle size of the emulsion; in addition, when boric acid is blended with hydroxyl groups in the aqueous hydroxyl polycarbonate resin, hydrogen ions (H) + ) The pH value of the emulsion is gradually reduced, so that the surrounding aqueous polyurethane or hydroxy polycarbonate resin molecular chains are agglomerated to form large particle particles to make the coating extinction, and therefore, the varnish coating can be made to extinction under the condition of not adding extinction powder or wax powder additionally. In addition, as no extinction powder or wax powder is added in the formula system, the coating can not leave light marks under the scraping action of external force, and the decorative and aesthetic properties of the finished coating are improved; in addition, the aqueous hydroxyl polycarbonate resin component in the formula enables the formed paint film to have certain elasticity, and the paint film can recover after being subjected to external pressure.
The invention also provides a preparation method of the water-based multi-component full-dumb scratch-resistant skin-feel varnish, which comprises the following steps of:
(1) Weighing the components according to the proportion, sequentially adding the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin, and stirring for 5 minutes at the rotating speed of 400 rpm; raising the stirring speed to 600-800 rpm, sequentially adding the defoaming agent, the wetting agent, the film forming auxiliary agent and the handfeel auxiliary agent, then adjusting the rotating speed to 1000-1200 rpm, and stirring for 15-25 min; then reducing the stirring speed to a medium speed of 600-800 rpm, adding a thickening agent and water to adjust the viscosity to 80-85 KU/25 ℃, and filtering to obtain a hydroxyl component;
the filtering is to filter out the water-based resin of the paint component, impurities of other components or large particles entering the paint in the production process so as to avoid influencing the hand feeling of the surface of the paint film after construction;
(2) Filtering the sulfonate modified HDI trimer with 200 meshes to obtain a curing agent component;
sulfonate modified HDI trimer belongs to the common practice in the field, is mainly beneficial to hand stirring during site construction, and is packaged after filtration;
(3) And (3) preparing the prepared hydroxyl component and curing agent component according to a molar ratio, adding boric acid powder, mixing, and standing for 12-18 min to obtain the water-based multi-component full-matt scratch-resistant skin-feel varnish.
The invention has the beneficial effects that:
(1) The refractive index of the extinction powder or the wax powder is different from that of the water-based resin, so that the obtained paint film has poor transparency; the water-based multi-component full-matt scratch-resistant clear top coat prepared by the invention is not added with extinction powder or wax powder, so that refractive index differences among various components are avoided, and the obtained paint film has good transparency.
(2) The aqueous multi-component full-dumb skin-scratch-resistant clear finishing paint provided by the invention depends on the change of the solubility of film forming substances (namely aqueous hydroxy polycarbonate resin and aqueous polyurethane resin in components) in water to form large-diameter particles, and after the large-diameter emulsion particles are solidified, the large-diameter emulsion particles are protruded out of the surface of a coating to cause light to have diffuse reflection effect, so that the coating is matted; when the extinction coating is scratched by the outside, the surface of the coating is not damaged and a bright mark is left.
(3) The water-based multi-component full-dumb skin-scratch-resistant clear finishing paint prepared by the invention has the advantages of fine and smooth surface, certain elasticity, no bright mark left when the paint is scratched on the surface of a paint film, good decorative property and excellent comprehensive mechanical property.
Detailed Description
For a further understanding of the present invention, the technical aspects of the present invention will be clearly and fully described below in connection with the following examples, and it is apparent that the described examples are only some, but not all, examples of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a water-based multi-component full-dumb skin scratch resistance clear top coat, which consists of a hydroxyl component, a curing agent component and a gloss regulator; wherein the curing agent component is sulfonate modified HDI trimer, and the sulfonate modified HDI trimer and the hydroxyl component are mixed according to n -NCO ：n -OH =1: 1.5, wherein the gloss modifier is boric acid, and the weight ratio of the boric acid to the hydroxyl component is 1:0.035;
the hydroxyl component comprises the following components in percentage by weight (the sum of the total weight percentages is 100%): 80% of aqueous hydroxy polycarbonate resin; 10% of aqueous polyurethane resin; 2% of a film forming auxiliary agent; 0.5% of defoaming agent; 0.5% of wetting agent; 0.5% of handfeel auxiliary agent; 0.4% of a thickener; the balance being water.
The preparation method comprises the following steps:
firstly, weighing the components according to a proportion, sequentially filtering the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin into a clean stainless steel dispersion cylinder by using a 150-mesh filter screen, stirring for 5 minutes at the rotation speed of 400rpm, increasing the stirring speed to 700rpm, sequentially adding an antifoaming agent Airex 902W, a wetting agent Tain 4100, a film-forming auxiliary agent BCS and a handfeel auxiliary agent Dowsil 211S, then adjusting the rotation speed to 1100rpm, and stirring for 20 minutes until no shrinkage cavity exists; then reducing the stirring speed to a medium speed of 700rpm, adding a thickening agent, namely hydroxymethyl cellulose and water, adjusting the viscosity to 82KU/25 ℃, and filtering to obtain a hydroxyl component;
adding sulfonate modified HDI trimer into a dispersion tank, and filtering with 200 meshes to obtain a curing agent component;
the obtained hydroxyl component and curing agent component are packaged respectively, and are used according to n -NCO :n -OH =1: 1.5, adding 3.5% boric acid powder, mixing, and standing for 15min to obtain the water-based multi-component full-matt anti-scratch skin feel varnish.
Example 2
The embodiment provides a water-based multi-component full-dumb skin scratch resistance clear top coat, which consists of a hydroxyl component, a sulfonate modified HDI trimer and boric acid; wherein sulfonate modified HDI trimer and hydroxyl component are combined according to n -NCO ：n -OH =1: 1.5, the weight ratio of boric acid to hydroxyl component is 1:0.03;
the hydroxyl component comprises the following components in percentage by weight (the sum of the total weight percentages is 100%):
80% of aqueous hydroxy polycarbonate resin; 10% of aqueous polyurethane resin; film forming aid 4%; 0.8% of defoaming agent; 0.4% of wetting agent; 0.5% of handfeel auxiliary agent; 0.5% of a thickener; the balance being water.
The preparation method comprises the following steps:
firstly, weighing the components according to a proportion, sequentially filtering the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin into a clean stainless steel dispersion cylinder by using a 150-mesh filter screen, stirring for 5 minutes at the rotation speed of 400rpm, increasing the stirring speed to 600rpm, sequentially adding a defoaming agent Foamex 825, a wetting agent Tain 4100, a film-forming additive DPM and a handfeel additive Dowsil 211S, then adjusting the rotation speed to 1000rpm, and stirring for 15 minutes until no shrinkage cavity exists; then reducing the stirring speed to a medium speed of 600rpm, adding a thickening agent xanthan gum and water to adjust the viscosity to 83KU/25 ℃, and filtering to obtain a hydroxyl component;
adding sulfonate modified HDI trimer into a dispersion tank, and filtering with 200 meshes to obtain a curing agent component;
the obtained hydroxyl component and curing agent component are packaged respectively, and are used according to n -NCO :n -OH =1: 1.5 NCO/OH molar ratio and then adding 3% boric acid powder, mixing, and standing for 15 min.
Example 3
The embodiment provides a water-based multi-component full-dumb skin scratch resistance clear top coat, which consists of a hydroxyl component, a sulfonate modified HDI trimer and boric acid; wherein sulfonate modified HDI trimer and hydroxyl component are combined according to n -NCO ：n -OH =1: 1.5, the weight ratio of boric acid to hydroxyl component is 1:0.02;
the hydroxyl component comprises the following components in percentage by weight (the sum of the total weight percentages is 100%):
75% of an aqueous hydroxy polycarbonate resin; 15% of aqueous polyurethane resin; 3% of a film forming auxiliary agent; 1% of a defoaming agent; 0.3% of wetting agent; 0.2% of handfeel auxiliary agent; 0.8% of a thickener; the balance being water.
The preparation method comprises the following steps:
firstly, weighing the components according to a proportion, sequentially filtering the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin into a clean stainless steel dispersion cylinder by using a 150-mesh filter screen, stirring for 5 minutes at the rotation speed of 400rpm, increasing the stirring speed to 800rpm, sequentially adding an antifoaming agent Airex 902W, a wetting agent Tain 4100, a film-forming additive DPNB and a handfeel additive Dowsil 211S, adjusting the rotation speed to 1200rpm, and stirring for 25 minutes until no shrinkage cavity exists; then reducing the stirring speed to a medium speed of 800rpm, adding a thickening agent Rhoalate 299 and water to adjust the viscosity to 85KU/25 ℃, and filtering to obtain a hydroxyl component;
adding sulfonate modified HDI trimer into a dispersion tank, and filtering with 200 meshes to obtain a curing agent component;
the obtained hydroxyl component and curing agent component are packaged respectively, and are used according to n -NCO :n -OH =1: 1.5 of NCO/OH molar ratio, then adding 2% boric acid powder, mixing, and standing for 18 min.
Example 4
The embodiment provides a water-based multi-component full-dumb skin scratch resistance clear top coat, which consists of a hydroxyl component, a sulfonate modified HDI trimer and boric acid; wherein the sulfonate modified HDI trimer and the hydroxyl component are as followsIllumination n -NCO ：n -OH =1: 1.5, the weight ratio of boric acid to hydroxyl component is 1:0.01;
the hydroxyl component comprises the following components in percentage by weight (the sum of the total weight percentages is 100%):
70% of an aqueous hydroxy polycarbonate resin; 20% of aqueous polyurethane resin; 3% of a film forming auxiliary agent; 0.5% of defoaming agent; 0.4% of wetting agent; 0.5% of handfeel auxiliary agent; 0.5% of a thickener; the balance being water.
The preparation method comprises the following steps:
firstly, weighing the components according to a proportion, sequentially filtering the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin into a clean stainless steel dispersion cylinder by using a 150-mesh filter screen, stirring for 5 minutes at the rotation speed of 400rpm, increasing the stirring speed to 700rpm, sequentially adding a defoaming agent Foamex 825, a wetting agent Tain 4100, a film-forming auxiliary agent BCS and a handfeel auxiliary agent Dowsil 211S, then adjusting the rotation speed to 1100rpm, and stirring for 20 minutes until no shrinkage cavity exists; then reducing the stirring speed to a medium speed of 700rpm, adding a thickening agent hydroxyethyl cellulose and water to adjust the viscosity to 80KU/25 ℃, and filtering to obtain a hydroxyl component;
adding sulfonate modified HDI trimer into a dispersion tank, and filtering with 200 meshes to obtain a curing agent component;
the obtained hydroxyl component and curing agent component are packaged respectively, and are used according to n -NCO :n -OH =1: 1.5 of NCO/OH molar ratio, then adding 1% boric acid powder, mixing, and standing for 15 min.
Comparative example 1
The comparative example provides a water-based multi-component full-dumb skin scratch resistance clear top coat which also comprises a hydroxyl component, a curing agent component and a gloss regulator;
the difference from example 1 is that the aqueous hydroxy polyurethane resin content in the hydroxy component is 85% and the aqueous polyurethane resin content is 5%.
The preparation method is the same as in example 1.
Comparative example 2
The comparative example provides a water-based multi-component full-dumb skin scratch resistance clear top coat which also comprises a hydroxyl component, a curing agent component and a gloss regulator;
the difference from example 1 was that the aqueous hydroxy polyurethane resin content of the hydroxy component was 82% and the aqueous polyurethane resin content was 8%.
The preparation method is the same as in example 1.
Test examples
Each performance test was performed on the aqueous multi-component full-matt scratch-resistant clear top coats prepared in examples 1-4 and comparative examples 1-2, respectively. The resistance test is carried out according to the water-based national standard GB/T23999-2009, and other tests adopt visual inspection and touch of multiple persons to carry out test experiments. The results of the resistance index test for each coating are shown in table 1 below:
TABLE 1 results of testing various indices of the paint
Note that: the numbers 1-5 in the table represent level 1 to level 5, with level 1 being the best and level 5 being the worst.
The experimental results show that the coatings prepared in the examples 1-4 have good resistance, matt luster, good elasticity, no bright mark or recoverable slight bright mark on the surface and excellent quality; and the proportion of the components of the aqueous hydroxyl polyurethane resin is increased in comparative examples 1-2, the elasticity is increased, but the scratch of the paint film is easy to break, and the quality is poor.
The foregoing description is only a preferred embodiment of the present invention and is not intended to limit the present invention, but although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof. Any modification, equivalent replacement, variation, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The water-based multi-component full-matt scratch-resistant clear finishing paint is characterized by comprising a hydroxyl component, a curing agent component and a gloss regulator, wherein the molar ratio of-OH in the hydroxyl component to-NCO in the curing agent component is 1.5:1, wherein the weight ratio of the hydroxyl component to the gloss modifier is 1: (1-3.5%);
the formula of the hydroxyl component comprises the following components in percentage by weight:
the curing agent component is sulfonate modified HDI trimer;
the gloss modifier is boric acid.
2. The aqueous multi-component full-matt skin-scratch-resistant clear topcoat composition according to claim 1, wherein the aqueous hydroxy polycarbonate resin has a solids content of 40±1%, a pH of 7 to 9, and an emulsion particle size of 80 microns or less.
3. The aqueous multi-component full-matt skin-scratch-resistant clear top coat according to claim 1, wherein the aqueous polyurethane resin has a solid content of 40+/-1%, a pH value of 7-9, a minimum film forming temperature of 44 ℃ and a fineness of below 30 microns.
4. The aqueous multi-component full-matt skin-scratch-resistant top coat according to claim 1, wherein said film forming aid is selected from one or more of BCS, DPM, DPNB.
5. The aqueous multi-component full-dummy anti-scratch skin feel varnish according to claim 1, wherein the defoamer is dyad Airex 902W or Foamex 825 or a mixture of Airex 902W and Foamex 825.
6. The aqueous multi-component full-matt scratch-resistant skin feel varnish according to claim 1, wherein the wetting agent is dihomo Twin 4100.
7. The aqueous multi-component full-matt scratch-resistant skin feel varnish according to claim 1, wherein the hand feel aid is Dowsil 211S, dow.
8. The aqueous multi-component full-matt skin-scratch-resistant top-coat paint according to claim 1, wherein said thickener is at least one of hydroxymethyl cellulose, hydroxypropyl methylcellulose, sodium carboxymethyl cellulose, hydroxyethyl cellulose, guar gum, xanthan gum, associative polyurethane thickener.
9. A method for preparing the aqueous multi-component full-matt scratch-resistant varnish according to any of claims 1-8, comprising the steps of:
(1) Weighing the components according to the proportion, sequentially adding the aqueous hydroxy polycarbonate resin and the aqueous polyurethane resin, and stirring for 5 minutes at the rotating speed of 400 rpm; raising the stirring speed to 600-800 rpm, sequentially adding the defoaming agent, the wetting agent, the film forming auxiliary agent and the handfeel auxiliary agent, then adjusting the rotating speed to 1000-1200 rpm, and stirring for 15-25 min; then reducing the stirring speed to a medium speed of 600-800 rpm, adding a thickening agent and water to adjust the viscosity to 80-85 KU/25 ℃, and filtering to obtain a hydroxyl component;
(2) Filtering the sulfonate modified HDI trimer with 200 meshes to obtain a curing agent component;
(3) And (3) preparing the prepared hydroxyl component and curing agent component according to a molar ratio, adding boric acid powder, mixing, and standing for 12-18 min to obtain the water-based multi-component full-matt scratch-resistant skin-feel varnish.
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| CN117247728A (en) * | 2023-11-01 | 2023-12-19 | 广东百川化工有限公司 | Water-based two-component high-permeability scratch-resistant paint and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007308587A (en) * | 2006-05-18 | 2007-11-29 | Dai Ichi Kogyo Seiyaku Co Ltd | Resin composition for matte coating and matte coating |
| CN114181602A (en) * | 2021-12-27 | 2022-03-15 | 濮阳展辰新材料有限公司 | Water-based double-component clear finishing paint and preparation method thereof |
| CN115286986A (en) * | 2022-06-28 | 2022-11-04 | 上海嘉宝莉涂料有限公司 | Skin-feel matte clear finish paint for woodware, and preparation method and application thereof |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007308587A (en) * | 2006-05-18 | 2007-11-29 | Dai Ichi Kogyo Seiyaku Co Ltd | Resin composition for matte coating and matte coating |
| CN114181602A (en) * | 2021-12-27 | 2022-03-15 | 濮阳展辰新材料有限公司 | Water-based double-component clear finishing paint and preparation method thereof |
| CN115286986A (en) * | 2022-06-28 | 2022-11-04 | 上海嘉宝莉涂料有限公司 | Skin-feel matte clear finish paint for woodware, and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117247728A (en) * | 2023-11-01 | 2023-12-19 | 广东百川化工有限公司 | Water-based two-component high-permeability scratch-resistant paint and preparation method thereof |
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