CN118291031B - A coating composition with sunscreen and water repellent function - Google Patents
A coating composition with sunscreen and water repellent function Download PDFInfo
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- CN118291031B CN118291031B CN202410582605.XA CN202410582605A CN118291031B CN 118291031 B CN118291031 B CN 118291031B CN 202410582605 A CN202410582605 A CN 202410582605A CN 118291031 B CN118291031 B CN 118291031B
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- coating composition
- acrylate emulsion
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000008199 coating composition Substances 0.000 title claims abstract description 33
- 239000005871 repellent Substances 0.000 title claims abstract description 23
- 230000002940 repellent Effects 0.000 title claims description 12
- 230000000475 sunscreen effect Effects 0.000 title claims 10
- 239000000516 sunscreening agent Substances 0.000 title claims 10
- 239000000839 emulsion Substances 0.000 claims abstract description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 56
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 47
- 239000004814 polyurethane Substances 0.000 claims abstract description 47
- 229920002635 polyurethane Polymers 0.000 claims abstract description 47
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 28
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- 239000005058 Isophorone diisocyanate Substances 0.000 claims abstract description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 12
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 12
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000570 polyether Polymers 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 230000006750 UV protection Effects 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000002562 thickening agent Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 102
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 36
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 30
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 27
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 27
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 16
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 13
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 13
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 11
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 11
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 10
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 10
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 9
- 238000002390 rotary evaporation Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 2
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 2
- 230000000996 additive effect Effects 0.000 claims 2
- 150000002009 diols Chemical class 0.000 claims 2
- UDVRROYKHLBOPZ-UHFFFAOYSA-N 3,3-dihydroxy-2-methylpropanoic acid Chemical compound OC(O)C(C)C(O)=O UDVRROYKHLBOPZ-UHFFFAOYSA-N 0.000 claims 1
- 230000003020 moisturizing effect Effects 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 20
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract description 10
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 10
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 description 62
- 239000004753 textile Substances 0.000 description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 16
- 238000001035 drying Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 13
- 238000003756 stirring Methods 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 10
- 238000001514 detection method Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 9
- 239000004408 titanium dioxide Substances 0.000 description 9
- 230000035699 permeability Effects 0.000 description 8
- 238000007639 printing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- -1 titanium dioxide modified silica sol Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 2
- 239000003906 humectant Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67391—Salts or oxidising-compounds mixtures
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The application discloses a coating composition with sun-proof and water-repellent functions, and relates to the technical field of coating compositions. The coating composition comprises the following raw materials in parts by weight: 50-80 parts of organosilicon modified aqueous polyurethane acrylate emulsion, 10-25 parts of ultraviolet-proof auxiliary agent, 8 parts of auxiliary agent and 1-3 parts of thickener PTF; the preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion comprises the following steps: polyether glycol and isophorone diisocyanate are catalyzed by dibutyl tin dilaurate to prepare polyurethane prepolymer, and acrylic acid monomers are added to prepare aqueous polyurethane acrylate emulsion; and finally, blending the aqueous polyurethane acrylate emulsion and the silicon dioxide modified sol to obtain the organosilicon modified aqueous polyurethane acrylate emulsion. The coating composition prepared by the application is applied to fabrics to endow the fabrics with excellent water repellency and ultraviolet resistance.
Description
Technical Field
The invention relates to the technical field of coating compositions, in particular to a novel coating composition with sun-proof and water-repellent functions.
Background
With the gradual improvement of the living standard of substances, the requirements of people on textiles are correspondingly higher and higher. Textiles have gradually shifted from traditional warm-in-winter and cool-in-summer demands to sanitary, healthy, comfortable functional demands. Textiles are also required to have a variety of functions such as water and oil repellency, antistatic, launderable, antibacterial, flame retardant, and the like. Functional fabrics have been widely used in the fields of household textiles, environmental and health textiles, decorative and industrial textiles, national defense construction and sophisticated science. The development of functional fabrics not only relates to the textile, dyeing and finishing industries, but also relates to the chemical fiber and fine chemical industry, however, the basis is to develop materials with the functions, the development approaches mainly comprise two ways, namely, developing functional fibers, and then preparing functional textiles from the fibers; the other is to functionally finish the common textile to make it have functionality. In the textile printing industry, the functionalization of textiles is generally achieved by means of functional finishing, i.e. by means of functional finishing agents. The water-repellent finishing is to apply a water-repellent film which cannot be infiltrated by water on the fabric, but does not seal the pores of the fabric, so that the fabric has the characteristics of water repellency and air permeability. The ultraviolet ray resistant finishing can make the fabric absorb or reflect ultraviolet rays, thereby having protective effect on skin.
The fluorine-containing finishing agent for the three-proofing finishing of textiles is difficult to degrade, easy to accumulate in a human body and also has adverse environmental effects due to the release of fluorine compounds after finishing and neutralization. These non-environmentally friendly functional finishes are being challenged by environmental regulations as the awareness of human environmental protection increases. It has therefore been a great trend to find a safe and environmentally friendly finishing process to impart functionality to textiles.
Disclosure of Invention
The invention aims to provide a novel coating composition with sun-proof and water-repellent functions, which solves the following technical problems:
the existing coating composition imparts water repellency to fabrics by adding fluorine-containing compounds, and has adverse effects on human bodies and the environment.
The aim of the invention can be achieved by the following technical scheme:
A novel coating composition with sun-proof and water-repellent functions comprises the following raw materials in parts by weight: 50-80 parts of organosilicon modified aqueous polyurethane acrylate emulsion, 10-25 parts of ultraviolet-proof auxiliary agent, 8 parts of auxiliary agent and 1-3 parts of thickener PTF;
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion comprises the following steps:
a1: in nitrogen atmosphere, polyether glycol (average molecular weight 1000), isophorone diisocyanate and dibutyltin dilaurate are added into a reaction kettle, the temperature is controlled to be 80-90 ℃, the reaction is carried out for 1-3 hours in a heat preservation mode, dimethylolpropionic acid and acetone are added, the reaction is carried out for 1-3 hours in a heat preservation mode, the temperature is controlled to be 60-70 ℃, hydroxyethyl methacrylate is added, the reaction is carried out for 1-3 hours in a heat preservation mode, the temperature is controlled to be 65-75 ℃, the reaction is carried out for 1-3 hours in a heat preservation mode, the temperature is controlled to be 35-45 ℃, triethylamine is added, the reaction is carried out for 0.5-1 hour in a heat preservation mode, deionized water is added, the reaction is carried out for 1-3 hours in a heat preservation mode, and acetone is removed by rotary evaporation, so that the aqueous polyurethane acrylate emulsion is obtained;
A2: and (3) blending the aqueous polyurethane acrylate emulsion and the silicon dioxide modified sol to obtain the organosilicon modified aqueous polyurethane acrylate emulsion.
As a further aspect of the invention: the addition ratio of the polyether glycol, the isophorone diisocyanate, the dibutyltin dilaurate, the dimethylolpropionic acid, the acetone, the hydroxyethyl methacrylate, the triethylamine and the deionized water in the A1 is 10g:5-8g:0.3-0.4g:1-2g:25-50mL:5-8g:1.1-1.5g:30-60mL.
As a further aspect of the invention: the mass ratio of the aqueous polyurethane acrylate emulsion to the silicon dioxide modified sol in the A2 is 20-30:20-50.
As a further aspect of the invention: the preparation method of the silica modified sol comprises the following steps:
S1: adding nano titanium dioxide, 2, 4-toluene diisocyanate and toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to be 80-90 ℃, carrying out heat preservation and stirring for 6-12h, washing with absolute ethyl alcohol, and drying to obtain a component I;
s2: adding the component I, gamma-aminopropyl triethoxysilane and ethyl acetate into a reaction kettle, controlling the temperature to be 50-60 ℃, carrying out heat preservation reaction for 3-6 hours, adding absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 1-3 hours, filtering, and drying to obtain a component II;
S3: adding absolute ethyl alcohol, a second component and tetraethoxysilane into a reaction kettle, dispersing uniformly, dripping acetic acid solution, controlling the temperature to be 25-35 ℃, and carrying out heat preservation reaction for 6-12 hours to obtain a third component;
S4: adding the three components, tripropylene glycol diacrylate into a reaction kettle, dispersing uniformly, and distilling under reduced pressure to remove the solvent to obtain the silica modified sol.
As a further aspect of the invention: the addition ratio of the nano titanium dioxide to the 2, 4-toluene diisocyanate to the toluene in the S1 is 10g:10-15g:100-300mL.
As a further aspect of the invention: the addition ratio of the component I, the gamma-aminopropyl triethoxysilane, the ethyl acetate and the absolute ethyl alcohol in the S2 is 10g:15-20g:100-300mL:2-20mL.
As a further aspect of the invention: the acetic acid solution in the S3 is 0.2-0.3 mol/L acetic acid solution, and the adding ratio of absolute ethyl alcohol, component II, tetraethoxysilane and acetic acid solution is 15-25mL:10g:4-12.5g:10-25mL.
As a further aspect of the invention: and in S4, the mass ratio of the component three to the tripropylene glycol diacrylate is 1:0.3-0.6.
As a further aspect of the invention: the ultraviolet-proof auxiliary agent is benzotriazole ultraviolet absorber.
As a further aspect of the invention: the auxiliary agent comprises 0.2-0.5 part of dispersing agent, 0.5-1 part of defoaming agent, 2-4 parts of humectant, 5-8 parts of aqueous wax emulsion handfeel agent and 0.3-0.5 part of pH regulator
As a further aspect of the invention: a method of preparing a coating composition comprising the steps of:
a1: cleaning a dispersion cylinder, adding the organosilicon modified aqueous polyurethane acrylate emulsion and the ultraviolet-proof auxiliary agent into the cylinder, and uniformly dispersing to form a premix;
a2: adding an auxiliary agent into the premix while stirring to uniformly disperse;
a3: adding a thickener PTF, and uniformly dispersing to obtain the coating composition.
The novel coating composition with sun-proof and water-repellent functions prepared by any one of the above is applied to textile printing.
As a further aspect of the application: the fabric material suitable for the coating composition prepared by the application comprises wind cloth, pure cotton, spandex and polyester fabric.
As a further aspect of the invention: sun protection and water repellency effects the preparation method of the fabric comprises the following steps: the novel coating composition with sun-proof and water-repellent functions prepared by any one of the above steps is used as printing paste; 100% printing paste is directly printed (recommended mesh: 800-1000 meshes), dried by hot air, and baked for 2-3min at 150-160 ℃ to obtain the fabric with sun-proof and water-repellent effects.
The invention has the beneficial effects that:
(1) The application utilizes excessive 2, 4-toluene diisocyanate to modify the surface of titanium dioxide nano particles to synthesize functional titanium dioxide with-NCO groups on the surface as a component I; the isocyanate group on the component one reacts with the amino group of gamma-aminopropyl triethoxysilane to obtain nano titanium dioxide modified by a silane coupling agent as a component two; the component II and the tetraethoxysilane are used as precursors to synthesize titanium dioxide modified silica sol; and finally, performing secondary modification by using tripropylene glycol diacrylate to obtain the silica modified sol. The application prepares polyurethane prepolymer by using polyether glycol and isophorone diisocyanate under the catalysis of dibutyltin dilaurate, and prepares aqueous polyurethane acrylate emulsion by adding acrylic acid monomer; and finally, blending the aqueous polyurethane acrylate emulsion and the silicon dioxide modified sol to obtain the organosilicon modified aqueous polyurethane acrylate emulsion. The organosilicon modified aqueous polyurethane acrylate emulsion prepared by the application is used as a finishing agent and is assisted with other functional additives to prepare a coating composition, and the coating composition prepared by the application is used for finishing fabrics, so that the fabrics are endowed with excellent water repellency, moisture permeability, ultraviolet resistance and high washing fastness.
The application takes titanium dioxide as an initial material, carries out organosilicon treatment through isocyanate and silane coupling agent, introduces special molecular composition and molecular structure of organosiloxane on the surface of the titanium dioxide, integrates the characteristics of the organic matters and the functions of the inorganic matters, and has excellent water resistance and low surface tension; the long-chain aliphatic hydrocarbon siloxane is used as a water repellent agent to replace fluorine-containing compound to be grafted on the surface of titanium dioxide, and the silicon dioxide hydrosol prepared based on tetraethoxysilane is modified by utilizing the hydrolysis end of a silane coupling agent, so that the coating composition achieves similar water repellent effect after the fluorine-containing finishing agent is finished, the finishing process is economical and safe, the environment is good, and the requirements of green chemistry are met.
The application utilizes the silicon dioxide modified sol to modify the polyurethane-acrylic ester, is favorable for reducing the surface energy of the material, improves the water resistance of the material, ensures that the silicon dioxide is uniformly dispersed in the polyurethane-acrylic ester matrix and is tightly combined with a high molecular chain segment, fills the pores among the chain segments, ensures that water molecules are difficult to enter, reduces the degree of affinity with water, ensures that water drops can not moisten fabrics, and ensures that a large number of pores are still maintained among fibers and yarns in the fabrics, so that the fabrics have good water repellency and air and moisture permeability.
(2) The application takes organosilicon modified titanium dioxide and tetraethoxysilane as precursors, takes water as solvent to prepare titanium dioxide modified silicon dioxide hydrosol, and uses tripropylene glycol diacrylate to carry out secondary modification to obtain silicon dioxide modified sol; the silica modified sol and polyurethane-acrylic ester have stronger intermolecular force, the silica plays a role similar to a crosslinking point in a matrix, inorganic particles and polymers are connected into a crosslinking network through chemical bonds, the resistance of bending, rotating and moving molecular chains is increased, the thermal decomposition of the molecular chains is blocked, and the thermal stability of the coating is improved. The application organically modified titanium dioxide and silicon dioxide effectively solves the problem that the direct addition of titanium dioxide and silicon dioxide as inorganic matters has no binding force with fabric fibers and extremely poor washability. Titanium dioxide is filled in sol-gel of organic modified silane, which not only endows the fabric with ultraviolet resistance, but also improves the combination fastness with the fabric, enhances the durability, improves the washing fastness of a functional layer on the surface of the fabric, and can obtain good air permeability and soft hand feeling.
Detailed Description
The following description will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion of the embodiment 1 comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
a2: adding 10g of nano titanium dioxide, 10g of 2, 4-toluene diisocyanate and 100mL of toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to 80 ℃, preserving heat, stirring for 6 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
A3: adding 10g of the component I, 15g of gamma-aminopropyl triethoxysilane and 100mL of ethyl acetate into a reaction kettle, controlling the temperature to be 50 ℃, carrying out heat preservation reaction for 3 hours, adding 2mL of absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 1-hour, filtering, and drying to obtain a component II;
a4: adding 15mL of absolute ethyl alcohol, 10g of component II and 12.5g of tetraethoxysilane into a reaction kettle, uniformly dispersing, dropwise adding 25mL of 0.2 mL/L acetic acid solution, controlling the temperature to be 25 ℃, and carrying out heat preservation reaction for 6 hours to obtain a component III;
A5: adding 1g of component III and 0.6g of tripropylene glycol diacrylate into a reaction kettle, uniformly dispersing, and distilling under reduced pressure to remove a solvent to obtain silica modified sol;
A6: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
a2: adding 10g of nano titanium dioxide, 12g of 2, 4-toluene diisocyanate and 200mL of toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to be 85 ℃, preserving heat, stirring for 9 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
a3: adding 10g of the component I, 18g of gamma-aminopropyl triethoxysilane and 200mL of ethyl acetate into a reaction kettle, controlling the temperature to be 55 ℃, carrying out heat preservation reaction for 3 hours, adding 10mL of absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 2 hours, filtering, and drying to obtain a component II;
a4: adding 20mL of absolute ethyl alcohol, 10g of component II and 12.5g of tetraethoxysilane into a reaction kettle, uniformly dispersing, dropwise adding 20mL of 0.2 mL/L acetic acid solution, controlling the temperature to be 30 ℃, and carrying out heat preservation reaction for 9 hours to obtain a component III;
A5: adding 1g of component III and 0.6g of tripropylene glycol diacrylate into a reaction kettle, uniformly dispersing, and distilling under reduced pressure to remove a solvent to obtain silica modified sol;
A6: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
Example 3 the preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
A2: in a nitrogen atmosphere, adding 10g of nano titanium dioxide, 15g of 2, 4-toluene diisocyanate and 300mL of toluene into a reaction kettle, uniformly dispersing, controlling the temperature to 90 ℃, preserving heat, stirring for 12 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
A3: adding 10g of the component I, 20g of gamma-aminopropyl triethoxysilane and 300mL of ethyl acetate into a reaction kettle, controlling the temperature to be 60 ℃, carrying out heat preservation reaction for 6 hours, adding 20mL of absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 3 hours, filtering, and drying to obtain a component II;
A4: adding 25mL of absolute ethyl alcohol, 10g of component II and 12.5g of tetraethoxysilane into a reaction kettle, uniformly dispersing, dropwise adding 25mL of 0.2 mL/L acetic acid solution, controlling the temperature to be 35 ℃, and carrying out heat preservation reaction for 12 hours to obtain a component III;
a5: adding 1g of component III and 0.6g of tripropylene glycol diacrylate into a reaction kettle for uniform dispersion, and removing the solvent by reduced pressure distillation to obtain the silica modified sol.
A6: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
Example 4a method of preparing a coating composition comprising the steps of:
A1: cleaning a dispersing cylinder, adding 80 parts by weight of the organosilicon modified aqueous polyurethane acrylate emulsion prepared in the embodiment 1 and 10 parts by weight of an ultraviolet-proof auxiliary agent (Henschel model UV-FAST N2) into the cylinder, stirring at 200-300rpm for 10min, mixing and dispersing uniformly to form a premix;
A2: adding 0.2 weight parts of dispersing agent (model BG554 manufactured by Dongguan high chemical industry Co., ltd. Of sodium polyacrylate), 0.5 weight parts of defoaming agent (model LLT-DF-723 manufactured by Long Li chemical industry preparation Co., ltd., xinxiang Co., ltd.), 2 weight parts of humectant (propylene glycol), 5 weight parts of aqueous wax emulsion handfeel agent (model ENCOR7605 manufactured by Jining Hua Kai resin Co., ltd.) and 0.3 weight parts of ammonia pH regulator into the premix while stirring, and stirring at 400rpm for 20min;
a3: 3 parts by weight of a thickener PTF was added and dispersed at 600rpm for 20 minutes to obtain a coating composition.
Example 5 in comparison with example 4, example 5 replaced only the silicone-modified aqueous urethane acrylate emulsion prepared in example 1 added in example 4 by an equivalent amount of the silicone-modified aqueous urethane acrylate emulsion prepared in example 2, which was completely identical in composition and preparation method to example 4.
Example 6 in comparison with example 4, example 6 replaced the silicone-modified aqueous urethane acrylate emulsion prepared in example 1 added in example 4 by an equivalent amount of the silicone-modified aqueous urethane acrylate emulsion prepared in example 3, which was completely identical in composition and preparation method to example 4.
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion of comparative example 1 comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
a2: adding 10g of nano titanium dioxide, 10g of 2, 4-toluene diisocyanate and 100mL of toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to 80 ℃, preserving heat, stirring for 6 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
A3: adding 10g of the component I, 15g of gamma-aminopropyl triethoxysilane and 100mL of ethyl acetate into a reaction kettle, controlling the temperature to be 50 ℃, carrying out heat preservation reaction for 3 hours, adding 2mL of absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 1-hour, filtering, and drying to obtain a component II;
A4: adding 15mL of absolute ethyl alcohol and 12.5g of ethyl orthosilicate into a reaction kettle, dispersing uniformly, dripping 25mL of 0.2 mL/L acetic acid solution, controlling the temperature to 25 ℃, carrying out heat preservation reaction for 6 hours, filtering, drying, and adding 10g of component II to obtain a component III;
a5: adding 1g of component III and 0.6g of tripropylene glycol diacrylate into a reaction kettle for uniform dispersion, and removing the solvent by reduced pressure distillation to obtain the silica modified sol.
A6: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion of comparative example 2 comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
a2: adding 10g of nano titanium dioxide, 10g of 2, 4-toluene diisocyanate and 100mL of toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to 80 ℃, preserving heat, stirring for 6 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
A3: adding 10g of the component I, 15g of gamma-aminopropyl triethoxysilane and 100mL of ethyl acetate into a reaction kettle, controlling the temperature to be 50 ℃, carrying out heat preservation reaction for 3 hours, adding 2mL of absolute ethyl alcohol, uniformly dispersing, carrying out heat preservation reaction for 1-hour, filtering, and drying to obtain a component II;
A4: adding 15mL of absolute ethyl alcohol and 12.5g of ethyl orthosilicate into a reaction kettle, dispersing uniformly, dripping 25mL of 0.2 mL/L acetic acid solution, controlling the temperature to 25 ℃, carrying out heat preservation reaction for 6 hours, filtering, drying, and adding 10g of component II to obtain silica modified sol;
A5: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
The preparation method of the organosilicon modified aqueous polyurethane acrylate emulsion of comparative example 3 comprises the following steps:
A1: in a nitrogen atmosphere, adding 10g of polyether glycol (average molecular weight 1000), 5g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate into a reaction kettle, controlling the temperature to be 80 ℃, carrying out heat preservation reaction for 1h, adding 1g of dimethylolpropionic acid and 25mL of acetone, carrying out heat preservation reaction for 1h, controlling the temperature to be 60 ℃, adding 5g of hydroxyethyl methacrylate, carrying out heat preservation reaction for 1h, controlling the temperature to be 65 ℃, carrying out heat preservation reaction for 1h, controlling the temperature to be 35 ℃, adding 1.1g of triethylamine, carrying out heat preservation reaction for 0.5h, adding 30mL of deionized water, carrying out heat preservation for 1h, and carrying out rotary evaporation to remove the acetone to obtain aqueous polyurethane acrylate emulsion;
a2: adding 10g of nano titanium dioxide, 10g of 2, 4-toluene diisocyanate and 100mL of toluene into a reaction kettle in a nitrogen atmosphere, uniformly dispersing, controlling the temperature to 80 ℃, preserving heat, stirring for 6 hours, washing with absolute ethyl alcohol, and drying to obtain a component I;
a3: adding 15mL of absolute ethyl alcohol and 12.5g of ethyl orthosilicate into a reaction kettle, dispersing uniformly, dripping 25mL of 0.2 mL/L acetic acid solution, controlling the temperature to 25 ℃, carrying out heat preservation reaction for 6 hours, filtering, drying, and adding 10g of component one to obtain a component three;
A4: adding 1g of component III and 0.6g of tripropylene glycol diacrylate into a reaction kettle for uniform dispersion, and removing the solvent by reduced pressure distillation to obtain the silica modified sol.
A5: 30g of aqueous polyurethane acrylate emulsion and 50g of silica modified sol are blended to obtain organosilicon modified aqueous polyurethane acrylate emulsion.
Comparative example 4 in comparison with example 4, comparative example 4 merely replaced the silicone-modified aqueous urethane acrylate emulsion prepared in example 1 added in example 4 by the same amount as the silicone-modified aqueous urethane acrylate emulsion prepared in comparative example 1, which was completely identical in composition and preparation method to example 4.
Comparative example 5 in comparison with example 4, comparative example 5 merely replaced the silicone-modified aqueous urethane acrylate emulsion prepared in example 1 added in example 4 by an equivalent amount of the silicone-modified aqueous urethane acrylate emulsion prepared in comparative example 2, which was completely identical in composition and preparation method to example 4.
Comparative example 6 in comparison with example 4, comparative example 6 replaced the silicone-modified aqueous urethane acrylate emulsion prepared in example 1 added in example 4 by an equivalent amount of the silicone-modified aqueous urethane acrylate emulsion prepared in comparative example 3, which was completely identical in composition and preparation method to example 4.
Performance detection
Preparing a sample: the printing process comprises the following steps: the coating compositions prepared in examples 4 to 6 and comparative examples 4 to 6 were used as printing pastes; 100% printing paste is directly printed (recommended mesh: 800 meshes), dried by hot air, and baked for 3min at a high temperature of 150 ℃ to obtain a fabric with sun-proof and water-repellent effects;
(1) Ultraviolet protection coefficient: detection is carried out according to GB/T18830-2009 evaluation of ultraviolet resistance of textiles, and the detection results are shown in Table 2;
(2) Water repellency (water resistance) performance, namely, water repellency grades of samples are distinguished according to the water repellency grade standard of the table 1 according to detection according to GB/T4745-2012 water repellency test for determination of surface moisture resistance of textile fabrics, and the detection results are shown in table 2;
table 1: waterproof grade standard
| Level 1 | Full wetting of the showered surface |
| Level 2 | Half of the affected surface is wet |
| 3 Grade | The showered surface is only wetted by unconnected and small area |
| Grade 4 | The showered surface is not wetted, but the surface is stained with small water drops. |
| Grade 5 | The showered surface is not wetted, and the surface is not stained with small water drops |
(3) Fastness to washing: detection is carried out according to GB/T3921.1-2008 washing fastness of textile color fastness test, and the detection result is shown in Table 2;
(4) Moisture permeability: according to GB/T12704-1991 method for testing moisture permeability of fabrics, moisture permeability cup method: the method A is used for measurement, the detection result is shown in table 3, and the detection result is shown in table 2;
table 2: statistical table of performance test data for examples 4-6 and comparative examples 4-6
As is clear from Table 2, the coating composition prepared by the present application was used as a finishing agent to impart excellent water repellency and UV resistance to fabrics, and the water repellency was still 4 or more after multiple water washes, and the UPF level was still maintained at 50 +. The coating composition prepared by the application is applied to fabrics, and does not influence the moisture permeability of the fabrics while endowing the fabrics with excellent water repellency and ultraviolet resistance.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
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