CN116478612A - Nylon glass fiber high-hardness super-weather-resistant environment-friendly paint and preparation method thereof - Google Patents
Nylon glass fiber high-hardness super-weather-resistant environment-friendly paint and preparation method thereof Download PDFInfo
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- CN116478612A CN116478612A CN202310556820.8A CN202310556820A CN116478612A CN 116478612 A CN116478612 A CN 116478612A CN 202310556820 A CN202310556820 A CN 202310556820A CN 116478612 A CN116478612 A CN 116478612A
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- glass fiber
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- 239000003973 paint Substances 0.000 title claims abstract description 108
- 239000004677 Nylon Substances 0.000 title claims abstract description 98
- 229920001778 nylon Polymers 0.000 title claims abstract description 98
- 239000003365 glass fiber Substances 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title claims abstract description 54
- 239000000839 emulsion Substances 0.000 claims abstract description 110
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229920002635 polyurethane Polymers 0.000 claims abstract description 44
- 239000004814 polyurethane Substances 0.000 claims abstract description 44
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 25
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 24
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000003755 preservative agent Substances 0.000 claims abstract description 17
- 230000002335 preservative effect Effects 0.000 claims abstract description 17
- 239000003513 alkali Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 9
- 230000008961 swelling Effects 0.000 claims abstract description 9
- 239000002562 thickening agent Substances 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 229920001661 Chitosan Polymers 0.000 claims description 46
- 239000000243 solution Substances 0.000 claims description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 12
- 230000004048 modification Effects 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 229960000583 acetic acid Drugs 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000012362 glacial acetic acid Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- LCPUCXXYIYXLJY-UHFFFAOYSA-N 1,1,2,4,4,4-hexafluorobutyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(F)(F)C(F)CC(F)(F)F LCPUCXXYIYXLJY-UHFFFAOYSA-N 0.000 claims description 4
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 4
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000004945 emulsification Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 45
- 230000008859 change Effects 0.000 description 50
- 239000011248 coating agent Substances 0.000 description 38
- 230000000052 comparative effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 12
- 230000000704 physical effect Effects 0.000 description 9
- 239000002585 base Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical group CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229920005749 polyurethane resin Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229920002101 Chitin Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006264 polyurethane film Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- PEIANZNHTIDHQE-UHFFFAOYSA-N trimethyl(3,3,3-trifluoropropyl)silane Chemical compound C[Si](C)(C)CCC(F)(F)F PEIANZNHTIDHQE-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
-
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The application relates to the field of coatings, and particularly discloses nylon glass fiber high-hardness super-weather-resistant environment-friendly paint and a preparation method thereof. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint comprises the following raw materials in parts by weight: 400-500 parts of polyurethane emulsion, 200-255 parts of acrylic emulsion, 100-200 parts of carbohydroxy modified polydimethylsiloxane emulsion, 1-2 parts of long-acting preservative, 40-50 parts of film forming auxiliary agent, 23-25 parts of antifreezing agent, 1-2 parts of multifunctional auxiliary agent, 2-5 parts of anti-aging agent, 1-3 parts of alkali swelling thickener, 1-2 parts of preservative, 10-12 parts of filler and 30-42 parts of nylon glass fiber. The paint prepared by the application has the advantages of high hardness of a formed paint film and good weather resistance.
Description
Technical Field
The application relates to the field of paint, in particular to nylon glass fiber high-hardness super-weather-resistant environment-friendly paint and a preparation method thereof.
Background
The water paint is prepared with synthetic resin emulsion as base material, pigment, stuffing and other assistant. With the continuous improvement of the environmental protection consciousness of consumers, VOC emission limit standards are issued in various provinces in China, the use of non-solvent type paint is encouraged, and the development of environmental protection paint such as water paint is opportunistic. Although the traditional paint still occupies a larger market share, the water paint is a green industry, is a direction of the future development of the paint, and domestic and indigenous water paint tap enterprises are rising.
However, the physical properties of the existing water-based paint are general, the overall mechanical and weather-proof qualities of the paint cannot meet the requirements, and if the water-based paint is researched and developed on the basis of the prior art, the research and development of the environment-friendly paint with good physical properties and weather resistance has positive significance.
Disclosure of Invention
In order to obtain an environment-friendly paint with good physical properties and good weather resistance, the application provides a nylon glass fiber high-hardness super weather-resistant environment-friendly paint and a preparation method thereof.
The application provides a nylon glass fiber high-hardness super-weather-resistant environment-friendly paint and a preparation method thereof, and adopts the following technical scheme:
in a first aspect, the application provides a nylon glass fiber high-hardness super-weather-resistant environment-friendly paint, which adopts the following technical scheme:
the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint comprises the following raw materials in parts by weight: 400-500 parts of polyurethane emulsion, 200-255 parts of acrylic emulsion, 100-200 parts of carbohydroxy modified polydimethylsiloxane emulsion, 1-2 parts of long-acting preservative, 40-50 parts of film forming auxiliary agent, 23-25 parts of antifreezing agent, 1-2 parts of multifunctional auxiliary agent, 2-5 parts of anti-aging agent, 1-3 parts of alkali swelling thickener, 1-2 parts of preservative, 10-12 parts of filler and 30-42 parts of modified nylon glass fiber.
By adopting the technical scheme, the application adopts polyurethane emulsion, acrylic emulsion and carbon hydroxyl modified polydimethylsiloxane emulsion as base solution, and the aqueous acrylic resin and the aqueous polyurethane resin have the advantages of safety, incombustibility, innocuity, no environmental pollution and the like compared with solvent-type products. The acrylic resin emulsion has the advantages of quick drying, good transparency, good gloss and color retention, and good adhesive force, luster, hardness and weather resistance, and has the disadvantages of high minimum film forming temperature, poor film forming property and flexibility, poor water resistance and solvent resistance, and hot adhesion and cold brittleness; the polyurethane molecular structure has a chain segment structure composed of a hard chain segment and a soft chain segment, the unique properties of hardness and flexibility are determined, the two-phase structure of the polyurethane emulsion enables the aqueous polyurethane emulsion to have excellent low-temperature film forming property, leveling property, flexibility and heat-resistant back viscosity, and the polyurethane emulsion has wear resistance and high hardness due to the existence of hydrogen bonds, but has the defects in stability, self-thickening property, solid content, gloss retention and the like. Therefore, the water-based acrylic resin and the water-based polyurethane resin are matched with each other, so that the physical property and weather resistance of the coating can be improved, in addition, the carbon hydroxyl modified polydimethylsiloxane emulsion has an active carbon hydroxyl structure, and carbon hydroxyl reacts with active groups in the polyurethane emulsion and the acrylic emulsion, so that the hydrophobicity, heat resistance, cold resistance and weather resistance of the coating are improved;
the nylon glass fiber is a composite fiber, has the advantages of high temperature resistance, good dimensional stability, good toughness, good insulativity, good corrosion resistance and high mechanical strength, and can improve the hardness, wear resistance, crack resistance and weather resistance of the coating when being added into the coating.
Preferably, the nylon glass fiber is modified to obtain a modified nylon glass fiber, and the preparation of the modified nylon glass fiber comprises the following steps:
s1: dissolving chitosan into glacial acetic acid solution with the mass concentration of 1-2% to obtain chitosan solution, wherein the mass ratio of the chitosan to the glacial acetic acid solution is 1: (50-80);
s2: and soaking the nylon Long Bo fiber in chitosan solution, filtering out the nylon glass fiber, and drying to obtain the modified nylon glass fiber.
By adopting the technical scheme, the chitosan modified nylon glass fiber is adopted, a layer of uneven chitosan film is formed on the surface of the nylon glass fiber by the chitosan film, hydrophilic groups such as hydroxyl groups, amino groups and the like are added on the surface of the nylon glass fiber by covering the chitosan film on the nylon glass fiber, the compatibility of the nylon glass fiber and a system is improved, and meanwhile, the meshing force of the fiber and a coating base layer is improved, so that the physical property and weather resistance of the coating are improved; in the second aspect, the shrinkage of the chitosan film in the drying process also enables the surface of the chitosan film to form a plurality of fine scores, so that the surface roughness of the nylon glass fiber is increased, the binding force between the nylon glass fiber and the system is increased, and the physical property and the weather resistance of the coating are further improved; in the third aspect, the chitosan has a plurality of active hydroxyl groups and amino groups, can promote the crosslinking among polyurethane emulsion, acrylic emulsion, carbon hydroxyl modified polydimethylsiloxane emulsion and filler, and is favorable for forming an organic-inorganic three-dimensional network structure, so that the coating has better stability and weather resistance.
Preferably, the molecular weight of the chitosan is 300000-400000D.
By adopting the technical scheme, the chitosan with the molecular weight of 300000-400000D forms a rough structure on the surface of the nylon glass fiber, so that the bonding capability with a matrix and a coating system is strong, and the mechanical property and weather resistance of the coating are further enhanced.
Preferably, the length of the nylon glass fiber is 2-10mm.
By adopting the technical scheme, when the length of the nylon glass fiber is 2-10mm, the three-dimensional network structure formed in the coating system is more stable, and the mechanical property and weather resistance of the coating are improved.
Preferably, the polyurethane emulsion is further subjected to a modification step to obtain a modified polyurethane emulsion, and the modified polyurethane emulsion comprises the following preparation steps:
s1: preparing a prepolymer by taking 2, 6-toluene diisocyanate, polyether glycol, 1, 4-butanediol, dimethylolpropionic acid and cyanuric acid epoxy resin as raw materials;
s2: adding hydroxyethyl acrylate to end-cap the terminal-NCO of the prepolymer, and reacting for 30-50min; cooling to 40-55deg.C, adding triethylamine to perform neutralization reaction to generate salt, and reacting for 5-10min; adding deionized water for emulsification for 40-80min, and cooling to room temperature to obtain modified polyurethane emulsion.
Through adopting above-mentioned technical scheme, this application forms network structure with epoxy and polyurethane reaction back part to improve the mechanical properties and heat resistance, water resistance and the solvent resistance etc. comprehensiveness of waterborne polyurethane film, further improve the urgent write performance and the weatherability of the fine super weather-proof environmental protection paint of nylon glass in this application.
Preferably, the acrylic emulsion is further subjected to a modification step to obtain a modified acrylic emulsion, and the modified acrylic emulsion comprises the following preparation steps:
s1: methyl methacrylate, butyl acrylate, acrylic acid, vinyl triethoxysilane and hexafluorobutyl methacrylate are mixed and stirred uniformly to obtain a mixed solution;
s2: heating the mixed solution to 100 ℃ in a nitrogen atmosphere, dripping azodiisobutyronitrile into the mixed solution, and preserving the temperature for 20-30min to obtain the modified acrylic emulsion.
Through adopting above-mentioned technical scheme, carry out fluorine silicon modification with acrylic emulsion among this application, the modified acrylic emulsion of preparation behind the film formation glass transition temperature is low, and the pliability is good, has very excellent weatherability to improved the compactness of coating, prevented corrosive substance's invasion, the while utilizes fluorine-containing silicone resin's surface tension low, and the weatherability is good, gathers on the coating surface, improves the weatherability of coating. The coating has the advantages of smooth and bright appearance, good leveling property, better mechanical property and further improvement of the mechanical property and weather resistance of the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint.
Preferably, the mass ratio of the modified polyurethane emulsion, the modified acrylic emulsion and the carbohydroxy modified polydimethylsiloxane emulsion is (4.2-4.5): (2.2-2.5): 1.
by adopting the technical scheme, the modified polyurethane emulsion, the modified acrylic emulsion and the carbon hydroxyl modified polydimethylsiloxane emulsion in the application can further enhance the matching effect within the mass ratio range, so that the mechanical property and weather resistance of the coating are further enhanced.
Preferably, the filler includes nano silica, nano alumina and ceramic powder.
By adopting the technical scheme, the nano silicon dioxide, the nano aluminum oxide and the ceramic powder are filled in the coating, the silicon dioxide, the nano aluminum oxide and the ceramic powder are mutually matched to serve as a framework of the coating, so that the hardness and the wear resistance of the coating are improved, a uniform inorganic-organic crosslinking structure can be formed by physical and chemical actions with the resin emulsion, the thermal stability and the mechanical property of the resin are improved, the scrubbing resistance of the coating, the adhesive force, the impact resistance and the thermal stability of a coating film are improved, in addition, the nano silicon dioxide and the nano aluminum oxide are small in volume and have quantum size effects, the nano particles are introduced into the coating, the lotus leaf effect is formed while the mechanical property of the coating is improved, the contact angle and the surface energy of the coating are reduced, and the combination of the coating and a matrix is facilitated.
In a second aspect, the application provides a preparation method of nylon glass fiber high-hardness super-weather-resistant environment-friendly paint, which adopts the following technical scheme:
the preparation method of the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint comprises the following steps:
the modified polyurethane emulsion, the modified acrylic emulsion, the carbohydroxy modified polydimethylsiloxane emulsion, the long-acting preservative, the film forming additive, the antifreezing agent, the multifunctional additive, the anti-aging agent, the alkali swelling thickener, the preservative, the filler and the modified nylon glass fiber are uniformly mixed to prepare the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint.
The beneficial effects are that:
in summary, the present application has the following beneficial effects:
1. according to the application, polyurethane emulsion, acrylic emulsion and carbon hydroxyl modified polydimethylsiloxane emulsion are used as base solution, the aqueous acrylic resin and the aqueous polyurethane resin are matched with each other, so that the physical property and weather resistance of the coating can be improved;
2. the nylon glass fiber is adopted, is a composite fiber, has the advantages of high temperature resistance, good dimensional stability, good toughness, good insulativity, good corrosion resistance and high mechanical strength, and can improve the hardness, wear resistance, crack resistance and weather resistance of the coating when being added into the coating;
3. according to the application, the chitosan modified nylon glass fiber is adopted, a layer of uneven chitosan film is formed on the surface of the nylon glass fiber by the chitosan film, and in the first aspect, hydrophilic groups such as hydroxyl groups, amino groups and the like are added on the surface of the nylon glass fiber by covering the chitosan film on the nylon glass fiber, so that the compatibility of the nylon glass fiber and a system is improved, and meanwhile, the meshing force of the fiber and a coating base layer is improved, so that the physical property and weather resistance of the coating are improved; in the second aspect, the shrinkage of the chitosan film in the drying process also enables the surface of the chitosan film to form a plurality of fine scores, so that the surface roughness of the nylon glass fiber is increased, the binding force between the nylon glass fiber and the system is increased, and the physical property and the weather resistance of the coating are further improved; in the third aspect, the chitosan has a plurality of active hydroxyl groups and amino groups, can promote the crosslinking among polyurethane emulsion, acrylic emulsion, carbon hydroxyl modified polydimethylsiloxane emulsion and filler, and is favorable for forming an organic-inorganic three-dimensional network structure, so that the coating has better stability and weather resistance.
Detailed Description
The raw material sources are as follows:
the polyurethane emulsion is from Anhui femtosecond chemical industry FS-1930C;
acrylic emulsion was from Han Hua acrylic emulsion RW-116;
the carbohydroxy modified polydimethylsiloxane emulsion is from the medical science and technology limited company of Wuhan Hongdehue;
the film forming auxiliary agent is alcohol ester twelve which comes from Haochen new material limited company;
the antifreezing agent is propylene glycol from macro-wetting chemical Co., ltd;
the multifunctional auxiliary agent is from sovier MP830;
the anti-aging agent is antioxidant B215;
chitosan is from the hawk chitin company of the Weifang family;
the long-acting preservative is from UK Tol, model MBS5050;
the alkali swelling thickener is from Dow chemical, model TT935;
the present application is further described in detail below in connection with the preparation examples and examples.
Preparation example
Preparation example 1
The preparation of the modified nylon glass fiber comprises the following steps:
s1: dissolving chitosan into glacial acetic acid solution with the mass concentration of 1% to obtain chitosan solution, wherein the mass ratio of the chitosan to the glacial acetic acid solution is 1:50;
s2: soaking the nylon Long Bo fiber in chitosan solution, filtering out the nylon glass fiber, and drying to obtain modified nylon glass fiber; wherein the molecular weight of chitosan is 300000-400000D, and the length of nylon glass fiber is 2-10mm.
Preparation example 2
The preparation of the modified nylon glass fiber comprises the following steps:
s1: dissolving chitosan into glacial acetic acid solution with the mass concentration of 1.5% to obtain chitosan solution, wherein the mass ratio of the chitosan to the glacial acetic acid solution is 1: 65.
S2: soaking the nylon Long Bo fiber in chitosan solution, filtering out the nylon glass fiber, and drying to obtain modified nylon glass fiber; wherein the molecular weight of chitosan is 300000-400000D, and the length of nylon glass fiber is 2-10mm.
Preparation example 3
The preparation of the modified nylon glass fiber comprises the following steps:
s1: dissolving chitosan into glacial acetic acid solution with the mass concentration of 2% to obtain chitosan solution, wherein the mass ratio of the chitosan to the glacial acetic acid solution is 1:80;
s2: soaking the nylon Long Bo fiber in chitosan solution, filtering out the nylon glass fiber, and drying to obtain modified nylon glass fiber; wherein the molecular weight of chitosan is 300000-400000D, and the length of nylon glass fiber is 2-10mm.
Preparation example 4
The preparation of the modified nylon glass fiber comprises the following steps:
s1, uniformly mixing 10kg of glass fiber with absolute ethyl alcohol to prepare a dispersion liquid with the mass fraction of 8%, and regulating the pH value to 3;
s2, adding 0.22kg of trifluoropropyl trimethyl silane into the dispersion liquid, heating to 60 ℃, stirring at constant temperature for 6 hours, filtering, and drying at 50 ℃ for 20 hours to obtain the modified nylon glass fiber.
Preparation example 5
Preparation example 5 is different from preparation example 2 in that the molecular weight of chitosan is 100000-300000D, and the other steps are the same as preparation example 2.
Preparation example 6
Preparation example 6 is different from preparation example 2 in that the molecular weight of chitosan is 400000-500000D, and the rest steps are the same as preparation example 2.
Preparation example 7
Preparation example 7 is different from preparation example 2 in that the length of the nylon glass fiber is 1-2mm, and the rest steps are the same as preparation example 2.
Preparation example 8
Preparation example 8 is different from preparation example 2 in that the length of the nylon glass fiber is 10-20mm, and the rest steps are the same as preparation example 2.
Preparation example 9
The modified polyurethane emulsion comprises the following preparation steps:
s1: preparing a prepolymer by taking 10kg of 2, 6-toluene diisocyanate, 5kg of polyether glycol, 3kg of 1, 4-butanediol, 5kg of dimethylolpropionic acid and 6kg of cyanuric acid epoxy resin as raw materials;
s2: adding 2kg of hydroxyethyl acrylate to end-cap the terminal-NCO of the prepolymer, and reacting for 30 min; cooling to 40 ℃, adding 4kg of triethylamine to perform neutralization reaction to generate salt, and reacting for 5 min; adding 5kg of deionized water for emulsification for 40min, and cooling to room temperature to obtain modified polyurethane emulsion.
Preparation example 10
The modified polyurethane emulsion comprises the following preparation steps:
s1: preparing a prepolymer by taking 12kg of 2, 6-toluene diisocyanate, 6kg of polyether glycol, 5kg of 1, 4-butanediol, 5kg of dimethylolpropionic acid and 6kg of cyanuric acid epoxy resin as raw materials;
s2: adding 4kg of hydroxyethyl acrylate to end-cap the terminal-NCO of the prepolymer, and reacting for 50min; cooling to 55 ℃, adding 5kg of triethylamine to perform neutralization reaction to generate salt, and reacting for 10min; adding 5kg of deionized water for emulsification for 80min, and cooling to room temperature to obtain modified polyurethane emulsion.
PREPARATION EXAMPLE 11
The modified acrylic emulsion comprises the following preparation steps:
s1: 5kg of methyl methacrylate, 3kg of butyl acrylate, 2kg of acrylic acid, 2kg of vinyl triethoxysilane and 8kg of hexafluorobutyl methacrylate are mixed and stirred uniformly to obtain a mixed solution;
s2: heating the mixed solution to 100 ℃ in a nitrogen atmosphere, dripping 0.2kg of azodiisobutyronitrile into the mixed solution, and preserving the heat for 20min to obtain the modified acrylic emulsion.
Preparation example 12
The modified acrylic emulsion comprises the following preparation steps:
s1: 4kg of methyl methacrylate, 5kg of butyl acrylate, 3kg of acrylic acid, 2kg of vinyl triethoxysilane and 9kg of hexafluorobutyl methacrylate are mixed and stirred uniformly to obtain a mixed solution;
s2: heating the mixed solution to 100 ℃ in a nitrogen atmosphere, dripping 0.4kg of azodiisobutyronitrile into the mixed solution, and preserving the heat for 30min to obtain the modified acrylic emulsion.
Examples
Example 1
The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint is prepared by mixing the following raw materials: 400kg of polyurethane emulsion, 200kg of acrylic emulsion, 100kg of carbohydroxy modified polydimethylsiloxane emulsion, 1kg of long-acting preservative, 40kg of film forming additive, 23kg of antifreeze, 1kg of multifunctional additive, 2kg of anti-aging agent, 1kg of alkali swelling thickener, 1kg of preservative, 10kg of filler (4 kg of nano silicon dioxide, 3kg of nano aluminum oxide and 3kg of ceramic powder) and 30kg of nylon glass fiber.
Example 2
The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint is prepared by mixing the following raw materials: 450kg of polyurethane emulsion, 230kg of acrylic emulsion, 150kg of carbohydroxy modified polydimethylsiloxane emulsion, 1.5kg of long-acting preservative, 45kg of film forming additive, 24kg of antifreezing agent, 1.5kg of multifunctional additive, 3kg of anti-aging agent, 2kg of alkali swelling thickener, 1.5kg of preservative, 11kg of filler (5 kg of nano silicon dioxide, 4kg of nano aluminum oxide and 2kg of ceramic powder) and 36kg of nylon glass fiber.
Example 3
The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint is prepared by mixing the following raw materials: 500kg of polyurethane emulsion, 255kg of acrylic emulsion, 200kg of carbohydroxy modified polydimethylsiloxane emulsion, 2kg of long-acting preservative, 50kg of film forming additive, 25kg of antifreezing agent, 2kg of multifunctional additive, 5kg of anti-aging agent, 3kg of alkali swelling thickener, 2kg of preservative, 12kg of filler (5 kg of nano silica, 5kg of nano alumina and 2kg of ceramic powder) and 42kg of nylon glass fiber.
Examples 4 to 7
Examples 4 to 7 are different from example 2 in that the nylon glass fiber is subjected to the modification step, the modified nylon glass fiber is derived from preparation examples 1 to 4, respectively, in this order, and the remaining steps, examples 4 to 7, are the same as example 2.
Examples 8 to 9
Examples 8 to 9 are different from example 2 in that the nylon glass fiber is subjected to the modification step, the modified nylon glass fiber is respectively from preparation examples 5 to 6 in sequence, and the rest of the steps are the same as example 2 in examples 8 to 9.
Examples 10 to 11
Examples 10 to 11 are different from example 2 in that the nylon glass fiber is subjected to the modification step, the modified nylon glass fiber is respectively from preparation examples 7 to 8 in sequence, and the rest of the steps, examples 10 to 11, are the same as example 2.
Examples 12 to 13
Examples 12 to 13 are different from example 5 in that the polyurethane emulsion is subjected to the modification step, the modified polyurethane emulsion is derived from preparation examples 9 to 10, respectively, in this order, and the remaining steps, examples 12 to 13, are the same as example 2.
Examples 14 to 15
Examples 14 to 15 are different from example 12 in that the acrylic emulsion is subjected to the modification step, the modified acrylic emulsion is derived from preparation examples 11 to 12 in this order, respectively, and the remaining steps examples 14 to 15 are the same as example 2.
Examples 16 to 20
Examples 16 to 20 differ from example 15 in the mass and mass ratio of the modified polyurethane emulsion, the modified acrylic emulsion and the carbohydroxy-modified polydimethylsiloxane emulsion, and the mass of the modified polyurethane emulsion, the modified acrylic emulsion and the carbohydroxy-modified polydimethylsiloxane emulsion are as follows:
TABLE 1 modified polyurethane emulsion, modified acrylic emulsion and carbon hydroxyl modified polydimethylsiloxane emulsion mass kg
| Modified polyurethane emulsion | Modified acrylic emulsion | Carbohydroxy modified polydimethylsiloxane emulsion | |
| Example 16 | 435 | 235 | 100 |
| Example 17 | 420 | 220 | 100 |
| Example 18 | 450 | 250 | 100 |
| Example 19 | 410 | 260 | 120 |
| Example 20 | 455 | 210 | 95 |
Example 21
Example 21 differs from example 16 in that the nano-silica is replaced with nano-titania, and the rest of the steps are the same as in example 16.
Example 22
Example 22 differs from example 16 in that the nano alumina was replaced with nano titania and the rest of the procedure was the same as example 16.
Comparative example
Comparative example 1
Comparative example 1 was different from example 16 in that no nylon glass fiber was added, and the rest of the procedure was the same as in example 16.
Comparative example 2
Comparative example 2 was different from example 16 in that the nylon glass fiber was replaced with a glass fiber, and the rest of the procedure was the same as in example 16.
Comparative example 3
Comparative example 3 was different from example 16 in that the carbohydroxy-modified polydimethylsiloxane was replaced with a silane coupling agent KH-550, and the remaining steps were the same as in example 16.
Performance test
Detection method
Paint film performance test: the coatings prepared in examples 1 to 22 and comparative examples 1 to 3 were subjected to hardness test and adhesion test on the formed paint films.
Weather resistance test of paint film: the weather-resistant coatings prepared in examples 1-22 and comparative examples 1-3 are coated on a steel plate, oil and rust removal are carried out before the steel plate is coated so as to ensure that the surface of the steel plate is clean and dry, the coatings are coated by adopting the same coating process, and then a test body is obtained after the coatings are cured at room temperature, and the test body is subjected to the test of the relevant performance;
cold and heat resistance alternating performance test: the test body is placed in a muffle furnace, heated to 150 ℃, kept for 10 hours, taken out, and soaked in cold water for 1 hour to obtain 1 period. Repeating the steps for a plurality of cycles, and observing the change (cracks, wrinkles, falling off, blobbing and the like) of the paint film from a plurality of cycles;
alkali resistance: immersing the test body in a 10% sodium hydroxide aqueous solution, standing for 24 hours, and observing whether appearance changes exist or not;
water resistance: the cup permeability test was performed, and the test piece was brought into contact with water droplets for 144 hours, and after the water droplets were removed, whether or not the appearance of the test piece was changed was confirmed.
The test results are shown in Table 2:
TABLE 2 film Properties and weather resistance of the coatings prepared in examples 1 to 22 and comparative examples 1 to 3
| Hardness of | Adhesion force | Alkali resistance | Water resistance | Heat and cold exchange resistance/cycle | |
| Example 1 | 4H | Level 2 | Paint film has no change | Paint film has no change | 5 |
| Example 2 | 4H | Level 2 | Paint film has no change | Paint film has no change | 6 |
| Example 3 | 4H | Level 2 | Paint film has no change | Paint film has no change | 5 |
| Example 4 | 5H | Level 1 | Paint film has no change | Paint film has no change | 7 |
| Example 5 | 5H | Level 1 | Paint film has no change | Paint film has no change | 7 |
| Example 6 | 5H | Level 1 | Paint film has no change | Paint film has no change | 7 |
| Example 7 | 4H | Level 1 | Paint film has no change | Paint film has no change | 6 |
| Example 8 | 4H | Level 1 | Paint film has no change | Paint film has no change | 5 |
| Example 9 | 4H | Level 1 | Paint film has no change | Paint film has no change | 5 |
| Example 10 | 4H | Level 1 | Paint film has no change | Paint film has no change | 5 |
| Example 11 | 4H | Level 1 | Paint film has no change | Paint film has no change | 5 |
| Example 12 | 6H | Level 1 | Paint film has no change | Paint film has no change | 8 |
| Example 13 | 6H | Level 1 | Paint film has no change | Paint film has no change | 8 |
| Example 14 | 7H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Example 15 | 7H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Example 16 | 7H | Level 1 | Paint film has no change | Paint film has no change | 10 |
| Example 17 | 7H | Level 1 | Paint film has no change | Paint film has no change | 10 |
| Example 18 | 7H | Level 1 | Paint film has no change | Paint film has no change | 10 |
| Example 19 | 7H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Example 20 | 7H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Example 21 | 6H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Example 22 | 6H | Level 1 | Paint film has no change | Paint film has no change | 9 |
| Comparative example 1 | 3H | Grade 4 | Microcracking of paint films | The paint film is slightly peeled off | 3 |
| Comparative example 2 | 4H | 3 grade | Paint film has no change | Paint film has no change | 6 |
| Comparative example 3 | 6H | Level 1 | Paint film has no change | Paint film has no change | 9 |
As can be seen by combining the data of examples 1-3 and Table 2, the hardness of the coating prepared in examples 1-3 can reach 4H, the adhesion is 2 grade, and the paint film has no change in alkali resistance and water resistance experiments, wherein the weather resistance of the paint film prepared in example 2 is better, and the weather resistance can reach 6 periods in cold-heat alternating resistance;
as can be seen by combining the data of example 2, examples 4-7 and table 2, the hardness, adhesive force and weather resistance of the paint film can be effectively improved by doping the nylon glass fiber into the paint after the modification of chitosan, and in addition, compared with the doping of the nylon glass fiber modified by chitosan into the paint, the hardness and weather resistance of the paint film are slightly poorer;
as can be seen from the data of examples 2, 10-11 and table 2, the hardness, adhesion and weather resistance of the paint film are better when the molecular weight of chitosan is 300000-400000D;
as can be seen from the data of examples 2, 10-11 and table 2, the nylon glass fiber has a length of 2-10mm, and the paint film has good hardness, adhesion and weather resistance;
as can be seen from the data of examples 5, examples 12-13 and table 2, the hardness and weather resistance of the paint film are improved after the polyurethane emulsion is modified;
as can be seen from the data of examples 6, examples 14 to 15 and table 2, the hardness and weather resistance of the paint film are improved after the acrylic emulsion is modified;
as can be seen from the data of examples 15 to 20 and table 2, the mass ratio of the modified polyurethane emulsion, the modified acrylic emulsion and the carbohydroxy-modified polydimethylsiloxane emulsion is (4.2 to 4.5): (2.2-2.5): in the range of 1, the hardness and weather resistance of the paint film are good;
combining the data of example 16, examples 21-22 and Table 1, it can be seen that the combination of silica, nano-alumina and ceramic powder can improve the mechanical properties and weatherability of the coating;
as can be seen from the data of examples 16, comparative examples 1-2 and table 1, the addition of nylon glass fiber to the coating can improve the hardness, crack resistance and weather resistance of the coating;
in combination with the data of example 16, comparative example 3 and Table 1, it is understood that the polyurethane emulsion, the acrylic emulsion and the carbohydroxy-modified polydimethylsiloxane emulsion in the present application cooperate with each other, and the carbohydroxy groups react with the reactive groups in the polyurethane emulsion and the acrylic emulsion, so that the mechanical properties and weather resistance of the coating can be improved.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (9)
1. A nylon glass fiber high-hardness super-weather-resistant environment-friendly paint is characterized in that: the material comprises the following raw materials in parts by weight: 400-500 parts of polyurethane emulsion, 200-255 parts of acrylic emulsion, 100-200 parts of carbohydroxy modified polydimethylsiloxane emulsion, 1-2 parts of long-acting preservative, 40-50 parts of film forming auxiliary agent, 23-25 parts of antifreezing agent, 1-2 parts of multifunctional auxiliary agent, 2-5 parts of anti-aging agent, 1-3=parts of alkali swelling thickener, 1-2 parts of preservative, 10-12 parts of filler and 30-42 parts of nylon glass fiber.
2. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 1, which is characterized in that: the nylon glass fiber is modified to obtain a modified nylon glass fiber, and the preparation of the modified nylon glass fiber comprises the following steps:
s1: dissolving chitosan into glacial acetic acid solution with the mass concentration of 1-2% to obtain chitosan solution, wherein the mass ratio of the chitosan to the glacial acetic acid solution is 1: (50-80);
s2: and soaking the nylon Long Bo fiber in chitosan solution, filtering out the nylon glass fiber, and drying to obtain the modified nylon glass fiber.
3. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 2, which is characterized in that: the molecular weight of the chitosan is 300000-400000D.
4. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 1, which is characterized in that: the length of the nylon glass fiber is 2-10mm.
5. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 1, which is characterized in that: the polyurethane emulsion is further subjected to a modification step to obtain modified polyurethane emulsion, and the modified polyurethane emulsion comprises the following preparation steps:
s1: preparing a prepolymer by taking 2, 6-toluene diisocyanate, polyether glycol, 1, 4-butanediol, dimethylolpropionic acid and cyanuric acid epoxy resin as raw materials;
s2: adding hydroxyethyl acrylate to end-cap the terminal-NCO of the prepolymer, and reacting for 30-50min; cooling to 40-55deg.C, adding triethylamine to perform neutralization reaction to generate salt, and reacting for 5-10min; adding deionized water for emulsification for 40-80min, and cooling to room temperature to obtain modified polyurethane emulsion.
6. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 1, which is characterized in that: the acrylic emulsion is further subjected to a modification step to obtain modified acrylic emulsion, and the modified acrylic emulsion comprises the following preparation steps:
s1: methyl methacrylate, butyl acrylate, acrylic acid, vinyl triethoxysilane and hexafluorobutyl methacrylate are mixed and stirred uniformly to obtain a mixed solution;
s2: heating the mixed solution to 100 ℃ in a nitrogen atmosphere, dripping azodiisobutyronitrile into the mixed solution, and preserving the temperature for 20-30min to obtain the modified acrylic emulsion.
7. The nylon glass fiber high-hardness super-weather-resistant environment-friendly paint is characterized in that: the mass ratio of the modified polyurethane emulsion to the modified acrylic emulsion to the carbon hydroxyl modified polydimethylsiloxane emulsion is (4.2-4.5): (2.2-2.5): 1.
8. the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint as claimed in claim 1, which is characterized in that: the filler comprises nano silicon dioxide, nano aluminum oxide and ceramic powder.
9. The method for preparing the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint according to any one of claims 1 to 8, which is characterized in that: the method comprises the following steps:
the modified polyurethane emulsion, the modified acrylic emulsion, the carbohydroxy modified polydimethylsiloxane emulsion, the long-acting preservative, the film forming additive, the antifreezing agent, the multifunctional additive, the anti-aging agent, the alkali swelling thickener, the preservative, the filler and the modified nylon glass fiber are uniformly mixed to prepare the nylon glass fiber high-hardness super-weather-resistant environment-friendly paint.
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| CN103923334A (en) * | 2014-04-09 | 2014-07-16 | 东南大学 | Fluorosilicone release film and preparation method thereof |
| CN105199589A (en) * | 2015-09-22 | 2015-12-30 | 天长市开林化工有限公司 | Weather-resistant anti-abrasion modified polyurethane waterborne paint |
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