CN114196281A - Method for preparing antifogging transparent coating by modified silane coupling agent and hydrophilic copolymer - Google Patents
Method for preparing antifogging transparent coating by modified silane coupling agent and hydrophilic copolymer Download PDFInfo
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- CN114196281A CN114196281A CN202111507350.3A CN202111507350A CN114196281A CN 114196281 A CN114196281 A CN 114196281A CN 202111507350 A CN202111507350 A CN 202111507350A CN 114196281 A CN114196281 A CN 114196281A
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- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 56
- 239000006087 Silane Coupling Agent Substances 0.000 title claims abstract description 43
- 150000004756 silanes Chemical class 0.000 title claims abstract description 30
- 229920001480 hydrophilic copolymer Polymers 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 29
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229920001477 hydrophilic polymer Polymers 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 8
- 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 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229920002818 (Hydroxyethyl)methacrylate Polymers 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
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 4
- 229940093475 2-ethoxyethanol Drugs 0.000 claims description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- 229940085675 polyethylene glycol 800 Drugs 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 3
- JOLQKTGDSGKSKJ-UHFFFAOYSA-N 1-ethoxypropan-2-ol Chemical compound CCOCC(C)O JOLQKTGDSGKSKJ-UHFFFAOYSA-N 0.000 claims description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000012295 chemical reaction liquid Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 2
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000008199 coating composition Substances 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 3
- MMNLHUHQFDVPSQ-UHFFFAOYSA-N N=C=O.CCO[Si](OCC)(OCC)C(C)C Chemical compound N=C=O.CCO[Si](OCC)(OCC)C(C)C MMNLHUHQFDVPSQ-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
A method for preparing an antifogging transparent coating by using a modified silane coupling agent and a hydrophilic copolymer belongs to the technical field of antifogging coatings. The invention firstly prepares a hydrophilic copolymer containing hydroxyl, and then uses polyethylene glycol with different molecular weights to modify a silane coupling agent, and the modification and the blending are carried out to form the organic-inorganic hybrid antifogging coating. On one hand, polyethylene glycol shows excellent hydrophilicity and flexibility, the added silane coupling agent can improve the wear resistance and the adhesive force, and the experimental method of modifying the silane coupling agent by polyethylene glycol is used for optimizing the coating formula, so that the coating has good antifogging performance, and the coating also shows excellent mechanical property and high transparency; on the other hand, the polyethylene glycol with different molecular weights is used, along with the increase of the molecular weights and the extension of molecular chains, a three-dimensional network structure is favorably formed, the structure can enhance the mechanical properties such as hydrophilicity, wear resistance and the like, can be applied to the antifogging field of optical devices, such as display screens, lenses, automobiles, building glass and the like, and is a good antifogging optical material.
Description
Technical Field
The invention relates to a method for preparing an antifogging transparent coating by using a modified silane coupling agent and a hydrophilic copolymer, belonging to the technical field of antifogging coatings.
Background
At certain temperature or humidity, water vapor may condense on the surface of the solid to form a mist. Due to refraction and scattering of light, originally transparent materials become turbid, so that the problem of fogging is caused, normal use of optical equipment such as glasses and windshields is influenced, and inconvenience is brought to life of people.
The organic-inorganic hybrid hydrophilic antifogging coating is a novel and effective antifogging coating and has excellent antifogging capability and mechanical property. Wherein the organic component provides hydrophilicity, the inorganic component ensures mechanical property, the hybrid coating can integrate the advantages of the organic component and the inorganic component, and the hybrid coating has great research value. However, how to stably attach the inorganic component to the surface of the organic substrate is still a current problem.
The polyethylene glycol has excellent hydrophilicity and flexibility, the silane coupling agent can provide wear resistance and adhesive force, and the coating formula is optimized by using an experimental method of modifying the silane coupling agent by the polyethylene glycol, so that the coating also has higher transparency and mechanical property on the basis of ensuring good antifogging property.
Disclosure of Invention
The invention aims to overcome the defects and provide a method for preparing an antifogging transparent coating by using a modified silane coupling agent and a hydrophilic copolymer, which can ensure good antifogging performance, and the coating also shows excellent mechanical property and high transparency and is suitable for the surfaces of various substrates.
The technical scheme of the invention is that the method for preparing the antifogging transparent coating by the modified silane coupling agent and the hydrophilic copolymer comprises the following steps:
(1) synthesis of hydrophilic Polymer: uniformly mixing monomers containing hydroxyl and double bonds, and stirring in the solution; introducing nitrogen, adding an initiator, keeping the temperature at 80-85 ℃, and reacting for 4-5 hours;
(2) synthesizing a polyethylene glycol modified silane coupling agent: mixing polyethylene glycol and a catalyst, dissolving in a solvent, dispersing uniformly, slowly dropwise adding a silane coupling agent, stirring at 20-25 ℃ for 20-24h, removing the solvent by using a rotary evaporator at 40-50 ℃, dropwise adding TEOS and a dispersing agent, then adding acetic acid, and stirring uniformly to obtain a modified silane coupling agent;
(3) preparing an antifogging coating: adding the hydrophilic polymer prepared in the step (1) into a reaction container, adding the polyethylene glycol modified silane coupling agent prepared in the step (2), and uniformly stirring to obtain the antifogging coating;
(4) and (3) curing the coating: and (4) dipping the carrier in the antifogging coating prepared in the step (3), drying, and curing at high temperature to obtain the antifogging transparent coating.
Further, the monomers containing hydroxyl and double bonds in the step (1) are at least two of hydroxyethyl methacrylate, hydroxyethyl acrylate, N-vinyl pyrrolidone, acrylic acid and glycidyl methacrylate.
Further, the initiator in the step (1) is at least one of azobisisobutyronitrile, azobisisoheptonitrile and potassium persulfate; the solution is specifically 2-ethoxyethanol solution.
The specific structural formula of the hydrophilic polymer prepared in the step (1) is as follows:
wherein m, n, p and q can be 0 according to the composition of reactants.
Further, the polyethylene glycol in the step (2) is specifically polyethylene glycol 200 and/or polyethylene glycol 800.
Further, the catalyst in the step (2) is dibutyltin dilaurate and/or stannous octoate.
Further, the solvent in the step (2) is tetrahydrofuran and/or acetone.
Further, the silane coupling agent in the step (2) is isocyanatopropyl triethoxysilane; the dispersant is at least one of 1-methoxy-2-propanol and 1-ethoxy-2-propanol.
Further, the initiator added in the step (1) accounts for 0.3-0.6% of the total mass of the reaction liquid; introducing nitrogen for 15-20 min.
Further, in the step (2), polyethylene glycol and a catalyst are mixed according to a ratio of 0.027 to 0.058 mol: mixing at a ratio of 0.0001-0.0002 mol; adding 0.027-0.058mol of silane coupling agent; 0.008-0.02mol of TEOS is dripped, 0.0002-0.0004mol of dispersant is added, and 0.4-0.7mL of acetic acid is added.
Further, in the step (3), the hydrophilic polymer: the mass ratio of the polyethylene glycol is 7-8: 2-3.
Further, in the step (4), the coating solution prepared in the step (3) is immersed at the speed of 1-2mm/s for 2-4 minutes, then is extracted from the coating at the speed of 1-2mm/s, is dried at the temperature of 35-45 ℃, and is cured at the temperature of 100-110 ℃ for 2-4 hours, so that the antifogging coating hybridized by the polyethylene glycol modified silane coupling agent and the hydrophilic copolymer is obtained.
The invention has the beneficial effects that: the hydrophilic polymer with polyhydroxy is prepared, the wear resistance and the adhesive force are improved by adding silica sol, but the surface wettability is reduced by the Si-O-Si structure, and the anti-fog capability is weakened. Because the polyethylene glycol shows good hydrophilicity and flexibility, the coating formula is optimized by adding the polyethylene glycol modified silane coupling agent, and the coating also has higher transparency and mechanical property on the basis of ensuring good antifogging property.
Drawings
FIG. 1 is a contact angle photograph of the anti-fog coating prepared in example 1.
FIG. 2 is a graph showing light transmittance of coating films prepared in examples.
Detailed Description
Example 1
(1) Synthesis of hydrophilic Polymer: 9.10g (0.07mol) of hydroxyethyl methacrylate, 0.72g (0.01mol) of acrylic acid, 1.11g (0.01mol) of N-vinylpyrrolidone and 1.42g (0.01mol) of Glycidyl Methacrylate (GMA) were mixed uniformly, and 9.00g (0.1mol) of a 2-ethoxyethanol solution was added thereto and stirred uniformly. About 15min after introduction of nitrogen, 0.06g (0.000365mol) of azobisisobutyronitrile was added and the temperature was maintained at 80 ℃ for about 4 hours.
(2) Synthesizing a polyethylene glycol modified silane coupling agent: 11.61g (0.058mol) of polyethylene glycol 200 and 0.08g (0.000127mol) of dibutyltin dilaurate were mixed, dissolved in 8g (0.11mol) of tetrahydrofuran, and dispersed uniformly, 14.36g (0.058mol) of isopropyltriethoxysilane isocyanate was slowly added dropwise, and stirred at 25 ℃ for 24 hours, after removing the solvent at 40 ℃ with a rotary evaporator, 4.03g (0.019mol) of TEOS and 0.02g (0.00022mol) of 1-methoxy-2-propanol were added dropwise, and 0.5mL of acetic acid was added with a pipette, and stirred uniformly.
(3) Preparing an antifogging coating: adding 7g of the hydrophilic polymer prepared in the step (1) into a beaker, adding 3g of polyethylene glycol modified silane coupling agent, and stirring for 45 min;
(4) and (3) curing the coating: and (3) immersing a glass plate into the beaker in which the solution in the step (3) is placed at the speed of 1mm/s, extracting the glass plate from the coating at the speed of 1.5mm/s after 3 minutes, drying the glass plate at the temperature of 40 ℃, and curing the glass plate for 2 hours at the temperature of 110 ℃ to obtain the antifogging coating hybridized by the polyethylene glycol modified silane coupling agent and the hydrophilic copolymer.
The contact angle photograph of the antifogging coating prepared is shown in figure 1; the contact angle is as low as 10 degrees or less, which shows that the coating film has excellent hydrophilicity and good antifogging property. The light transmittance of the coating film is shown in fig. 2.
Example 2
(1) Synthesis of hydrophilic Polymer: 13.66g (0.105mol) of hydroxyethyl methacrylate, 1.08g (0.015mol) of acrylic acid, 1.66g (0.015mol) of N-vinylpyrrolidone and 2.13g (0.015mol) of Glycidyl Methacrylate (GMA) were mixed uniformly, 10.00g (0.11mol) of a 2-ethoxyethanol solution was added thereto, and the mixture was stirred uniformly. About 15min after passing through nitrogen, 0.093g (0.000564mol) of azobisisobutyronitrile was added, and the temperature was maintained at 80 ℃ for about 4 hours.
(2) Synthesizing a polyethylene glycol modified silane coupling agent: 21.48g (0.027mol) of polyethylene glycol 800 and 0.08g (0.000127mol) of dibutyltin dilaurate were mixed, dissolved in 9g (0.125mol) of tetrahydrofuran, dispersed homogeneously, 6.64g (0.027mol) of isopropyltriethoxysilane isocyanate were slowly added dropwise, stirred at 25 ℃ for 24 hours, after removal of the solvent at 50 ℃ by a rotary evaporator, 1.87g (0.0089mol) of TEOS and 0.03g (0.00033mol) of 1-methoxy-2-propanol were added dropwise, 0.5mL of acetic acid was added by a pipette, and stirred homogeneously.
(3) Preparing an antifogging coating: adding 8g of hydrophilic polymer into a beaker, adding 2g of polyethylene glycol 800 modified silane coupling agent, and stirring for 40 min;
(4) and (3) curing the coating: and (2) immersing the glass plate into a beaker with the antifogging coating at the speed of 1.5mm/s, extracting the glass plate from the coating at the speed of 1.5mm/s after 3 minutes, drying the glass plate at the temperature of 40 ℃, and curing the glass plate for 3 hours at the temperature of 100 ℃ to obtain the antifogging coating hybridized by the polyethylene glycol modified silane coupling agent and the hydrophilic copolymer.
The light transmittance curve chart of the prepared coating film is shown in figure 2; fig. 2 shows that the transparency of all films can reach about 99% in the visible light region.
On one hand, the coating prepared by the invention has excellent hydrophilicity and flexibility due to the polyethylene glycol, the wear resistance and adhesive force can be improved by adding the silane coupling agent, and the coating formula is optimized by using an experimental method of modifying the silane coupling agent by the polyethylene glycol, so that the coating has excellent mechanical property and high transparency besides good antifogging property; on the other hand, the polyethylene glycol with different molecular weights is used, along with the increase of the molecular weights and the extension of molecular chains, a three-dimensional network structure is favorably formed, and the structure can enhance the mechanical properties such as hydrophilicity, wear resistance and the like. The film prepared by the invention has excellent transparency, and can be applied to the antifogging field of a plurality of optical devices, such as display screens, lenses, automobiles, building glass and the like.
Claims (10)
1. A method for preparing an antifogging transparent coating by a modified silane coupling agent and a hydrophilic copolymer is characterized by comprising the following steps:
(1) synthesis of hydrophilic Polymer: uniformly mixing monomers containing hydroxyl and double bonds, and stirring in the solution; introducing nitrogen, adding an initiator, keeping the temperature at 80-85 ℃, and reacting for 4-5 hours;
(2) synthesizing a polyethylene glycol modified silane coupling agent: mixing polyethylene glycol and a catalyst, dissolving in a solvent, dispersing uniformly, slowly dropwise adding a silane coupling agent, stirring at 20-25 ℃ for 20-24h, removing the solvent by using a rotary evaporator at 40-50 ℃, dropwise adding TEOS and a dispersing agent, then adding acetic acid, and stirring uniformly to obtain a modified silane coupling agent;
(3) preparing an antifogging coating: adding the hydrophilic polymer prepared in the step (1) into a reaction container, adding the polyethylene glycol modified silane coupling agent prepared in the step (2), and uniformly stirring to obtain the antifogging coating;
(4) and (3) curing the coating: and (4) dipping the carrier in the antifogging coating prepared in the step (3), drying, and curing at high temperature to obtain the antifogging transparent coating.
2. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the monomers containing hydroxyl and double bonds in the step (1) are at least two of hydroxyethyl methacrylate, hydroxyethyl acrylate, N-vinyl pyrrolidone, acrylic acid and glycidyl methacrylate.
3. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the initiator in the step (1) is at least one of azobisisobutyronitrile, azobisisoheptonitrile and potassium persulfate; the solution is specifically 2-ethoxyethanol solution.
4. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the polyethylene glycol in the step (2) is specifically polyethylene glycol 200 and/or polyethylene glycol 800.
5. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: and (3) the catalyst in the step (2) is dibutyltin dilaurate and/or stannous octoate.
6. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: in the step (2), the solvent is tetrahydrofuran and/or acetone.
7. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the silane coupling agent in the step (2) is isocyanatopropyl triethoxysilane; the dispersant is at least one of 1-methoxy-2-propanol and 1-ethoxy-2-propanol.
8. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the initiator added in the step (1) accounts for 0.3 to 0.6 percent of the total mass of the reaction liquid; introducing nitrogen for 15-20 min.
9. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: in the step (2), polyethylene glycol and a catalyst are mixed according to the molar ratio of 0.027-0.058 mol: mixing at a ratio of 0.0001-0.0002 mol; adding 0.027-0.058mol of silane coupling agent; 0.008-0.02mol of TEOS is dripped, 0.0002-0.0004mol of dispersant is added, and 0.4-0.7mL of acetic acid is added.
10. The method for preparing an antifogging transparent coating by using the modified silane coupling agent and the hydrophilic copolymer as claimed in claim 1, which is characterized in that: the hydrophilic polymer in the step (3): the mass ratio of the polyethylene glycol is 7-8: 2-3.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725640A (en) * | 2015-03-27 | 2015-06-24 | 吉林大学 | Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating |
| CN106752623A (en) * | 2016-11-28 | 2017-05-31 | 江南大学 | A kind of preparation method of heat curing-type polyacrylate hydrophilic antifogging coating |
| CN106752857A (en) * | 2016-11-28 | 2017-05-31 | 江南大学 | A kind of preparation method of the super hydrophilic antifogging coating of dual cure acrylate |
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- 2021-12-10 CN CN202111507350.3A patent/CN114196281A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725640A (en) * | 2015-03-27 | 2015-06-24 | 吉林大学 | Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating |
| CN106752623A (en) * | 2016-11-28 | 2017-05-31 | 江南大学 | A kind of preparation method of heat curing-type polyacrylate hydrophilic antifogging coating |
| CN106752857A (en) * | 2016-11-28 | 2017-05-31 | 江南大学 | A kind of preparation method of the super hydrophilic antifogging coating of dual cure acrylate |
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