Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the anti-fingerprint oil, and the film formed after being sprayed on the glass cover plate, the mobile phone toughened film and the glass screen has better oil-proof, water-proof, anti-fouling and anti-fingerprint functions, and has good smoothness and wear resistance.
Another object of the present invention is to provide a method for preparing the anti-fingerprint oil.
It is still another object of the present invention to provide a method for using the fingerprint oil.
It is yet another object of the present invention to provide the use of an anti-fingerprint oil.
The invention adopts the following technical scheme:
the anti-fingerprint oil comprises the following raw materials, by weight, 99-99.9% of a fluorine-containing diluent, and the balance of a mixture consisting of a long-chain fluorine-containing silane coupling agent and a fluorine-containing cage type polysilsesquioxane modified silane coupling agent; based on 100% weight percentage, the long-chain fluorine-containing silane coupling agent accounts for 65-95% of the weight of the mixture, and the fluorine-containing cage type polysilsesquioxane modified silane coupling agent accounts for 5-35% of the weight of the mixture;
the chemical structural general formula of the long-chain fluorine-containing silane coupling agent is CF3(CF2)mCH2CH2(CH3)aSi(OM1)3-aWherein M is more than or equal to 3 and less than or equal to 16, a is more than or equal to 0 and less than or equal to 0.5, M1Independently selected from methyl or ethyl; in a more preferred embodiment, m is 5. ltoreq. m.ltoreq.10; in another more preferred embodiment, a is 0.
The chemical structural general formula of the fluorine-containing cage type polysilsesquioxane modified silane coupling agent is Rf7(SiO1.5)8CH2CH2SCH2CH2CH2(CH3)bSi(OM2)3-bWherein R isfOf (2) aThe general structural formula is CF3(CF2)nCH2CH2-,3≤n≤16,0≤b≤0.4,M2Independently selected from methyl or ethyl. In a more preferred embodiment, n is 5. ltoreq. n.ltoreq.10; in another more preferred embodiment, b is 0.
Preferably, the fluorine-containing diluent is selected from perfluoroalkane or hydrofluoroether solvents having a boiling point (one standard atmosphere) of no more than 110 ℃. The perfluoroalkane may be selected from one or more of perfluorohexane, perfluoroheptane and perfluorooctane. The hydrofluoroether solvent can be selected from F-8632, F-8603, F-8605, F-8608, F-8610, HFE-7200 available from 3M, and fluorinated liquid
FC-77 or Solvay Solexis HT-110.
Preferably, the fluorine-containing diluent accounts for 99.3-99.8% by weight.
Preferably, the long-chain fluorine-containing silane coupling agent accounts for 70-90% of the weight of the mixture, and the fluorine-containing cage type polysilsesquioxane modified silane coupling agent accounts for 10-30% of the weight of the mixture.
Preferably, the fluorine-containing cage type polysilsesquioxane modified silane coupling agent has a chemical structural general formula of Rf7Vi(SiO1.5)8The general formula of the cage type polysilsesquioxane and the chemical structure thereof is HSCH2CH2CH2(CH3)bSi(OM2)3-bIs prepared by carrying out a mercapto-alkene click chemical reaction, wherein RfHas a chemical structural formula of CF3(CF2)nCH2CH2-,3≤n≤16,ViRepresents vinyl, 0. ltoreq. b. ltoreq.0.4, M2Independently selected from methyl or ethyl; in a more preferred embodiment, n is 5. ltoreq. n.ltoreq.10; in another more preferred embodiment, b is 0.
Rf7Vi(SiO1.5)8The fluorine-containing cage polysilsesquioxane may be prepared from RfSiX3Silsesquioxane trihydric alcohol or silsesquioxane generated by hydrolytic condensation in acidic or alkaline environmentThe alkyl trisilicate is reacted with vinyl trichlorosilane, vinyl trimethoxy silane or vinyl triethoxy silane, wherein X is independently selected from-OCH3、-OCH2CH3or-Cl.
For example, the Chinese patent publication No. CN103183702B discloses a method for preparing heptadecafluorooctylpropyl cage polysilsesquioxane and functionalized derivatives thereof, which comprises the steps of hydrolyzing and condensing tridecafluorooctylpropyltrimethoxysilane in an alkaline environment to obtain trisilanol sodium salt of heptadecafluorooctylpropyl cage polysilsesquioxane, and reacting with a silane coupling agent to obtain a T8 configuration monofunctional tridecafluorooctylpropylpropyl POSS monomer.
For example, the publication "Reversible addition-fragmentation chain transfer (RAFT) copolymerization of fluoroalkyl polymeric silsesquioxane (F-POSS) macromonomers" (polymer chemistry,2013, 7 th, 2230-) reports that heptadecafluorodecyl cage polysilsesquioxane diol reacts with methacryloxypropylmethyldichlorosilane to produce fluorine-containing cage polysilsesquioxane.
The preparation method of the anti-fingerprint oil according to any one of the embodiments comprises the steps of accurately weighing the raw materials according to a formula, filling nitrogen into a closed container for protection, sequentially adding the fluorine-containing diluent, the long-chain fluorine-containing silane coupling agent and the fluorine-containing cage type polysilsesquioxane modified silane coupling agent, and stirring and mixing uniformly at room temperature to obtain the anti-fingerprint oil.
According to the preparation method of the anti-fingerprint oil, the raw materials are accurately weighed according to the formula, nitrogen is filled into a closed container for protection, 20-30 wt% of fluorine-containing diluent, long-chain fluorine-containing silane coupling agent and fluorine-containing cage type polysilsesquioxane modified silane coupling agent are sequentially added, and the mixture is stirred and mixed uniformly at room temperature; adding the rest fluorine-containing diluent before use, and stirring uniformly.
The method for using the anti-fingerprint oil according to any one of the above embodiments, wherein the anti-fingerprint oil is directly sprayed on the surface of the substrate, and is heated for 5-60 minutes at 70-150 ℃.
Preferably, the substrate is selected from the group consisting of glass, metal, stone or ceramic.
The application of the anti-fingerprint oil in any embodiment of the above aspects to glass cover plates, mobile phone toughened films, glass screens, metal products, ceramic products or stone materials.
The invention has the beneficial effects that:
(1) compared with the prior anti-fingerprint oil sold in the market, the novel anti-fingerprint oil provided by the invention has better oil-proof, antifouling and waterproof functions, and meanwhile, has good smoothness and wear resistance; under the effective concentration of 0.3 wt%, the water drop angle of the glass cover plate treated by the commercially available imported anti-fingerprint oil is 114 degrees, while the water drop angle of the glass cover plate treated by the anti-fingerprint oil can reach 127 degrees; the contact angle of the n-hexadecane of the glass cover plate treated by the commercially available imported anti-fingerprint oil is 72 degrees, while the contact angle of the n-hexadecane of the glass cover plate treated by the anti-fingerprint oil can reach 77 degrees.
(2) The fingerprint-proof oil of the invention has similar use method and curing mode with the commercial fingerprint-proof oil, so that the original equipment is directly used without using new equipment.
Detailed Description
The technical solution of the present invention is further illustrated and described by the following detailed description.
Unless otherwise specified, the parts in the following embodiments are parts by weight.
Detailed description of the preferred embodiments
Preparation of fluorine-containing cage polysilsesquioxane
56.8g of heptadecafluorodecyltrimethoxysilane (formula C)8F17CH2CH2Si(OCH3)3) Adding the mixture into 400ml tetrahydrofuran, adding 3g sodium hydroxide and 5g deionized water, stirring for half an hour at room temperature, heating to 50 +/-2 ℃, reacting for 5 hours, heating to a reaction system for micro reflux, and reacting for 25 hours. And (3) rotationally evaporating the solvent until the reaction product becomes sticky, adding methanol stored at the temperature of minus 5 ℃ for washing, and drying to obtain a solid product 1.
10g of the solid product 1 was added to 300ml of anhydrous tetrahydrofuran, 3g of vinyltrichlorosilane was added, and the mixture was stirred at room temperature for 4 hours, filtered, collected to obtain a filtrate, and the solvent was removed, washed with methanol, and dried to obtain fluorine-containing POSS1 (heptadecafluorodecyl) vinyl polyhedral oligomeric silsesquioxane).
46.8g of tridecafluorooctyltrimethoxysilane (formula C)6F13CH2CH2Si(OCH3)3) Adding the mixture into 450ml tetrahydrofuran, adding 3g sodium hydroxide and 4.5g deionized water, stirring for half an hour at room temperature, heating to 50 +/-2 ℃, reacting for 8 hours, heating to a reaction system for micro reflux, and reacting for 25 hours. And (3) rotationally evaporating the solvent until the reaction product becomes sticky, adding methanol stored at the temperature of minus 5 ℃ for washing, and drying to obtain a solid product 2.
10g of the solid product 2 was added to 250ml of anhydrous tetrahydrofuran, 5g of vinyltrichlorosilane was added, and the mixture was stirred at room temperature for 5 hours, filtered, collected to obtain a filtrate, and the solvent was removed, washed with methanol, and dried to obtain fluorine-containing POSS2 (hepta (tridecafluorooctyl) vinyl polyhedral oligomeric silsesquioxane).
Preparation of fluorine-containing cage type polysilsesquioxane modified silane coupling agent
At room temperature, 35.7g of fluorine-containing POSS1 and 2.94g of gamma-mercaptopropyltrimethoxysilane are added into 200ml of butyl acetate and stirred uniformly, 1g of benzoin dimethyl ether is added and stirred uniformly, and the dominant wavelength is 365nm, the light intensity is 3W/cm2Irradiating for 2 min, removing butyl acetate, adding methanol stored at-5 deg.C, cleaning for 2 times, filtering, and drying to obtain fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agent 1 (chemical formula is (C)8F17CH2CH2)7Si8O16CH2CH2SCH2CH2CH2Si(OCH3)3)。
At room temperature, 35.7g of fluorine-containing POSS1 and 3.57g of gamma-mercaptopropyltriethoxysilane were added to 200ml of tetrahydrofuran, and the mixture was stirred uniformly, 1g of benzoin dimethyl ether was added, and the mixture was stirred uniformly at a dominant wavelength of 365nm and a light intensity of 3W/cm2Irradiating for 2.5 min, removing tetrahydrofuran, adding methanol stored at-5 deg.C, cleaning for 2 times, filtering, and drying to obtain fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agentAgent 2 (chemical formula is (C)8F17CH2CH2)7Si8O16CH2CH2SCH2CH2CH2Si(OCH2CH3)3)。
At room temperature, 28.7g of fluorine-containing POSS2 and 2.94g of gamma-mercaptopropyltrimethoxysilane are added into 200ml of butyl acetate and stirred uniformly, 1g of benzoin dimethyl ether is added and stirred uniformly, and the dominant wavelength is 365nm, the light intensity is 3W/cm2Irradiating for 1.5 min, removing butyl acetate, adding methanol stored at-5 deg.C, cleaning for 2 times, filtering, and drying to obtain fluorine-containing cage type polysilsesquioxane modified silane coupling agent 3 (chemical formula is (C)6F13CH2CH2)7Si8O16CH2CH2SCH2CH2CH2Si(OCH3)3)。
At room temperature, 28.7g of fluorine-containing POSS2 and 3.57g of gamma-mercaptopropyltriethoxysilane were added to 200ml of ethyl acetate, and the mixture was stirred uniformly, 1g of benzoin dimethyl ether was added, and the mixture was stirred uniformly at a dominant wavelength of 365nm and a light intensity of 3W/cm2Irradiating for 2 min, removing ethyl acetate, washing with methanol stored at-5 deg.C for 2 times, filtering, and drying to obtain fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agent 4 (chemical formula is (C)6F13CH2CH2)7Si8O16CH2CH2SCH2CH2CH2Si(OCH2CH3)3)。
Example 1
And (2) flushing nitrogen gas for protection in a closed container, sequentially adding 99.7g of perfluorohexane diluent, 0.24g of commercially available heptadecafluorodecyltrimethoxysilane and 0.06g of fluorine-containing cage type polysilsesquioxane modified silane coupling agent 1, and stirring and uniformly mixing at room temperature to obtain the fingerprint oil 1.
Example 2
The preparation method comprises the steps of charging a closed container with nitrogen for protection, sequentially adding 20g of perfluoroheptane diluent, 0.35g of commercially available heptadecafluorodecyltrimethoxysilane and 0.15g of fluorine-containing cage type polysilsesquioxane modified silane coupling agent 2, and stirring and mixing uniformly at room temperature. The remaining 79.5g of perfluoroheptane diluent was added before use to give anti-fingerprint oil 2.
Example 3
The preparation method comprises the steps of charging nitrogen into a closed container for protection, sequentially adding 25.7g of perfluoroheptane diluent, 0.24g of commercially available heptadecafluorodecyltrimethoxysilane and 0.06g of fluorine-containing cage type polysilsesquioxane modified silane coupling agent 3, and stirring and mixing uniformly at room temperature. The remaining 74g of HFE-7200 electronic fluorinated liquid was added before use to obtain the fingerprint oil 3.
Example 4
The preparation method comprises the steps of charging nitrogen into a closed container for protection, sequentially adding 50g of HFE-7200 electronic fluorinated liquid, 0.16g of commercially available heptadecafluorodecyltrimethoxysilane and 0.04g of fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agent 4, and stirring and mixing uniformly at room temperature. The remaining 49.8g of HFE-7200 electronic fluorinated liquid was added before use to obtain the anti-fingerprint oil 4.
Example 5
And (2) flushing nitrogen gas for protection in a closed container, sequentially adding 99.7g of perfluorohexane diluent, 0.21g of commercially available heptadecafluorodecyltrimethoxysilane and 0.09g of fluorine-containing cage type polysilsesquioxane modified silane coupling agent 1, and stirring and uniformly mixing at room temperature to obtain the fingerprint oil 5.
Example 6
And (2) filling nitrogen into a closed container for protection, sequentially adding 99.7g of HFE-7200 electronic fluorinated liquid, 0.21g of commercially available heptadecafluorodecyltrimethoxysilane and 0.09g of fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agent 2, and stirring and uniformly mixing at room temperature to obtain the anti-fingerprint oil 6.
Example 7
The preparation method comprises the steps of filling a closed container with nitrogen for protection, sequentially adding 25g of HFE-7200 electronic fluorinated liquid, 0.21g of commercially available tridecafluorooctyltrimethoxysilane and 0.09g of fluorine-containing polyhedral oligomeric silsesquioxane modified silane coupling agent 3, and stirring and mixing uniformly at room temperature. The remaining 74.7g of perfluorohexane diluent was added before use to give the anti-fingerprint oil 7.
Comparative example 1
The effective concentration of the imported brand I anti-fingerprint oil is 0.3 wt%.
Comparative example 2
The effective concentration of the imported brand I anti-fingerprint oil is 0.2 wt%.
Comparative example 3
The effective concentration of the fingerprint-resistant oil imported from brand II is 0.3 wt%.
Applications of
The anti-fingerprint oils 1 to 7 of examples 1 to 7 and the anti-fingerprint oil of comparative example were directly sprayed on a cleaned glass cover plate, heated in a 130 ℃ ring oven for 20 minutes, taken out, and left at room temperature for 24 hours.
Testing
(1) Oil-proofing property: a drop of n-hexadecane was dropped on the treated glass cover plate, and the contact angle was measured with a water drop angle tester. And respectively testing three positions on the glass cover plate, and averaging the test results. The higher the contact angle of n-hexadecane, the better the oil repellency. The results are shown in Table 1.
(2) Waterproof performance: and (4) dropping a drop of deionized water on the treated glass cover plate, and testing a contact angle by using a water drop angle tester. And respectively testing three positions on the glass cover plate, and averaging the test results. The higher the contact angle of deionized water, the better the water repellency. The results are shown in Table 1.
(3) Antifouling performance: and (3) putting the treated glass cover plate into simulated human sweat, soaking for 240 hours, taking out, cleaning, and testing the water drop angle according to the waterproof performance. The higher the water drop angle, the better the antifouling property. The results are shown in Table 1.
(4) Smoothness: and testing the dynamic friction coefficient of the surface of the treated glass cover plate by using a dynamic friction coefficient tester. The lower the dynamic friction coefficient, the better the smoothness. The results are shown in Table 1.
(5) Wear resistance: and testing by using an abrasion tester. 1Kg load, 0000# steel wool, contact area 10mm x 10mm, frequency 30 times/min. After 3000 rubs, the drop angle reached 100 ℃ and above is a pass test, otherwise it is a fail test. The results are shown in Table 1.
TABLE 1
As can be seen from the data in Table 1, the anti-fingerprint oil of the present invention can significantly improve the oil-, water-and stain-resistant properties of the glass cover plate without deteriorating the smoothness and wear resistance, as compared with commercially available anti-fingerprint oils.
The foregoing has shown and described the fundamental principles, major features and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are merely preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and that equivalent changes and modifications made within the scope of the present invention and the specification should be covered thereby. The scope of the invention is defined by the appended claims and equivalents thereof.