CN114716931A - Adhesive tape preparation process - Google Patents
Adhesive tape preparation process Download PDFInfo
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- CN114716931A CN114716931A CN202210373537.7A CN202210373537A CN114716931A CN 114716931 A CN114716931 A CN 114716931A CN 202210373537 A CN202210373537 A CN 202210373537A CN 114716931 A CN114716931 A CN 114716931A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an adhesive tape preparation process, which comprises the following steps: the method comprises the following steps: s1, preparing a base material; s2, preparing glue layer ingredients; s3, uniformly coating the adhesive layer materials on one side surface of the base material to obtain the adhesive tape; s4, winding, rewinding, shearing, sampling and packaging the prepared adhesive tape; in the step S1, a super-hydrophobic PET film is used as a base material; in step S2, an organic silicon pressure sensitive adhesive is used as a glue layer ingredient. The preparation method of the adhesive tape disclosed by the invention adopts the super-hydrophobic PET film as the base material to prepare the adhesive tape, so that the hydrophobicity of the surface of the adhesive tape can be effectively increased while the lightness and the high transparency of the adhesive tape are kept as much as possible; the super-hydrophobic surface of the adhesive tape has the characteristics of super-hydrophobicity, self-cleaning, stain resistance, drag reduction and the like, and meanwhile, the super-hydrophobic PET film also has excellent physical properties such as high transparency, chemical resistance, toughness and the like, so that the structural strength and the corrosion resistance of the adhesive tape are improved.
Description
Technical Field
The invention relates to the technical field of adhesive tapes, in particular to an adhesive tape preparation process.
Background
The adhesive tape is widely applied to various fields as a common article in daily life of people, and can be adhered to the surfaces of articles made of various different materials, so that the adhesive function of the adhesive tape is realized. Especially in the electronic products such as computers, mobile phones and other related products based on electric energy, the connection of internal parts and external shells can not be separated from the use of adhesive tapes in many occasions, and in the application occasions requiring the isolation from liquid, the corrosion resistance and the infiltration release performance of the adhesive tapes become more important.
The existing adhesive tape usually adopts a PET (polyethylene terephthalate) film as a base material to enhance the physical property of the adhesive tape, however, the surface of the modified PET film has insufficient hydrophobicity, so that an aqueous solution is easy to infiltrate on the surface of the adhesive tape and is difficult to clean and separate, and an adhering surface is infiltrated by the aqueous solution to cause electric leakage and even corrosion.
Disclosure of Invention
In view of the above, it is necessary to provide a process for producing an adhesive tape, which addresses the problem of insufficient surface hydrophobicity of the existing adhesive tape base material.
A preparation process of an adhesive tape comprises the following steps:
s1, preparing a base material;
s2, preparing glue layer ingredients;
s3, uniformly coating the adhesive layer on the surface of one side of the base material to obtain the adhesive tape;
and S4, rolling, rewinding, shearing, sampling and packaging the prepared adhesive tape.
In one embodiment, the super-hydrophobic PET film is used as the substrate in step S1.
In one embodiment, the step S2 uses a silicone pressure sensitive adhesive as the adhesive layer formulation.
In one embodiment, the thickness range of the substrate in the step S3 is 0.025mm ± 0.02mm, the thickness range of the adhesive layer is 0.065mm ± 0.02mm, and the total thickness of the adhesive tape is 0.090mm ± 0.02 mm.
In one embodiment, the step S1 further includes the following steps:
s11, preparing silicon dioxide sol;
s12, carrying out ultrasonic cleaning on a PET film with a preset size in an absolute ethyl alcohol environment for 10min, washing the PET film with ionized water after the ultrasonic cleaning is finished, and drying for 2h at 70 ℃;
s13, performing plasma treatment on the PET film treated in the step S12 for 60S at 200W in an air atmosphere;
s14, dipping the PET film processed in the step S13 into the silica sol prepared in the step S1 by adopting a dipping and pulling method coating mode, and carrying out pulling coating at a pulling speed of 2.0 mm/S;
s15, placing the PET film coated in the step S14 in an oven at 70 ℃ for heating for 2 h;
s16, preparing a FAS modifier, and performing liquid phase modification on the PET film heated for 2 hours in the step S15 in an FAS modifier environment for 30 min;
s17, taking the PET film in the step S16 out of the FAS modifier, and drying in an oven at 80 ℃ for 6h to obtain the super-hydrophobic PET film substrate with high transparency.
In one embodiment, the step S11 further includes the following steps:
s111, respectively taking 5-15 parts of ethyl orthosilicate, 10-30 parts of absolute ethyl alcohol, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l);
s112, mixing 5-15 parts of absolute ethyl alcohol with ethyl orthosilicate, and magnetically stirring for 30min at room temperature to prepare a solution A;
s113, mixing absolute ethyl alcohol with the mass fraction equal to that in the step S112, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l) to prepare a solution B;
s114, continuously stirring the solution A, meanwhile, slowly dropwise adding the solution B into the solution A, and continuously stirring for 2 hours in a sealed room-temperature environment;
and S115, after the mixed solution in the step S114 is stirred, aging the mixed solution for 4d in a room temperature environment to obtain the silica sol.
In one embodiment, the step S16 further includes the following steps:
s161 Fluorodecyl trimethoxy silane is taken and normal hexane is taken as a solvent to prepare the FAS modifier with the mass fraction of 1%.
In summary, the method for preparing the adhesive tape disclosed by the invention adopts the super-hydrophobic PET film as the substrate to prepare the adhesive tape, so that the hydrophobic property of the surface of the adhesive tape can be effectively increased while the lightness and the high transparency of the adhesive tape are kept as much as possible. The super-hydrophobic surface of the adhesive tape has the characteristics of super-hydrophobicity, self-cleaning, stain resistance, drag reduction and the like, and meanwhile, the super-hydrophobic PET film also has excellent physical properties such as high transparency, chemical resistance, toughness and the like, so that the structural strength and the corrosion resistance of the adhesive tape are improved; the preparation method of the adhesive tape improves the super-hydrophobic modification effect of the FAS modifier on the PET film by performing plasma modification on the PET film and performing dip-coating and pull-coating on the PET film by using the silica sol.
Drawings
FIG. 1 is a schematic process flow diagram of a tape preparation process in one embodiment;
FIG. 2 is a schematic view of a substrate preparation flow of an embodiment of a tape preparation process;
FIG. 3 is a schematic view showing a flow of preparing a silica sol according to a process for preparing an adhesive tape according to an embodiment;
FIG. 4 is a schematic diagram of the FAS modifier preparation process in one embodiment of the tape preparation process.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, the present invention discloses a process for preparing an adhesive tape, which comprises the following steps:
s1, preparing a base material;
s2, preparing glue layer ingredients;
s3, uniformly coating the adhesive layer materials on one side surface of the base material to obtain the adhesive tape;
and S4, rolling, rewinding, shearing, sampling and packaging the prepared adhesive tape.
Further, in step S1, a super-hydrophobic PET film is used as the substrate. In practical application, the adhesive tape adopting the super-hydrophobic PET film as the base material can effectively prevent the surface of the adhesive tape from being soaked by the aqueous solution after the adhesive tape is adhered to the adhering surface. The contact angle of water on a solid surface is an important measure of the wettability of the surface, and surfaces with a contact angle of more than 150 ° with water and a sliding angle of less than 10 ° are generally made superhydrophobic surfaces. The super-hydrophobic PET film is an adhesive tape base material with a super-hydrophobic surface, and has excellent hydrophobicity, self-cleaning performance, antifouling performance and resistance reducing performance, so that corrosive liquid can be effectively prevented from infiltrating and permeating the surface of the adhesive tape, and the adhesive surface is effectively protected.
Further, in step S2, an organic silicon pressure sensitive adhesive is used as a glue layer ingredient. Compared with the traditional acrylate pressure-sensitive adhesive and rubber pressure-sensitive adhesive, the organic silicon pressure-sensitive adhesive has excellent performances of chemical resistance, water resistance, oil resistance, solvent resistance, high temperature resistance, low temperature resistance, thermal degradation resistance, oxidative degradation resistance and the like, and can be bonded with various materials which are difficult to bond, such as polyolefin fluoroplastics, polyimides, polycarbonates and the like which are not subjected to surface treatment
Further, the thickness range of the base material in the step S3 is 0.025mm ± 0.02mm, the thickness range of the glue layer is 0.065mm ± 0.02mm, and the total thickness of the adhesive tape is 0.090mm ± 0.02 mm. In practical application, the thickness of the adhesive tape is controlled within an ultrathin range, so that after the adhesive tape is attached to the adhesive surface, the smoothness of the adhesive surface can be kept to a great extent, and an obvious abrupt transition line is prevented from being formed between the adhesive tape and the adhesive surface.
Referring to fig. 2, further, the step S1 includes the following steps:
s11, preparing silica sol, wherein in the embodiment, the PET film takes the silica sol as a plating layer dipping sol for plating a layer of uniform silica particles on the surface of the PET film, so as to enhance the visible light transmittance of the PET film;
s12, carrying out ultrasonic cleaning on a PET film with a preset size in an absolute ethyl alcohol environment for 10min so as to remove oil stains and dirt possibly existing on the surface of the PET film, washing the PET film with ionized water after the ultrasonic cleaning is finished, and drying the PET film for 2h at 70 ℃;
s13, performing plasma treatment on the PET film treated in the step S12 for 60S at 200W power in an air atmosphere, wherein the plasma treatment on the PET film can perform certain physical and chemical modification on the surface of the PET film, so that the adhesive force of the surface of the PET film is effectively enhanced, and the lifting coating effect of the surface of the PET film is improved;
s14, dipping the PET film processed in the step S13 into the silica sol prepared in the step S1 by adopting a dip-coating method to carry out dip coating at a pulling speed of 2.0mm/S, wherein the dip-coating method carries out dip coating at a preset pulling speed by utilizing the interaction among the viscosity, the surface tension and the gravity of the silica sol, so as to control the coating thickness; in the embodiment, the coating thickness on the surface of the PET film can be effectively controlled at the pulling speed of 2.0mm/s, and the anti-reflection effect is better.
S15, placing the PET film coated in the step S14 in an oven at 70 ℃ for heating for 2 h;
s16, because a large number of hydroxyl groups exist in the surface silicon dioxide coating of the PET film after dip-draw coating, the PET film is hydrophilic, so FAS modification needs to be carried out on the PET film; preparing an FAS modifier, performing liquid phase modification on the PET film heated for 2 hours in the step S15 in an FAS modifier environment for 30min, wherein after the FAS modification, the wettability of the PET film is obviously reduced, and the hydrophilic surface of the PET film can be converted into a super-hydrophobic surface, so that the hydrophobicity, self-cleaning performance, antifouling performance and drag reduction performance of the surface of the PET film are effectively improved;
s17, taking the PET film in the step S16 out of the FAS modifier, and drying in an oven at 80 ℃ for 6h to obtain the super-hydrophobic PET film substrate with high transparency.
Referring to fig. 3, further, the step S11 includes the following steps:
s111, respectively taking 5-15 parts of ethyl orthosilicate, 10-30 parts of absolute ethyl alcohol, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l);
s112, mixing 5-15 parts of absolute ethyl alcohol with ethyl orthosilicate, and magnetically stirring for 30min at room temperature to prepare a solution A;
s113, mixing absolute ethyl alcohol with the mass fraction equal to that in the step S112, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l) to prepare a solution B;
s114, continuously stirring the solution A, meanwhile, slowly dropwise adding the solution B into the solution A, and continuously stirring for 2 hours in a sealed room-temperature environment;
and S115, after the mixed solution in the step S114 is stirred, aging the mixed solution for 4d in a room temperature environment to obtain the silica sol.
Referring to fig. 4, further, the step S16 includes the following steps:
s161 Fluorodecyl trimethoxy silane is taken and normal hexane is taken as a solvent to prepare the FAS modifier with the mass fraction of 1%.
In summary, the method for preparing the adhesive tape disclosed by the invention adopts the super-hydrophobic PET film as the substrate to prepare the adhesive tape, so that the hydrophobic property of the surface of the adhesive tape can be effectively increased while the lightness and the high transparency of the adhesive tape are kept as much as possible. The super-hydrophobic surface of the adhesive tape has the characteristics of super-hydrophobicity, self-cleaning, stain resistance, drag reduction and the like, and meanwhile, the super-hydrophobic PET film also has excellent physical properties such as high transparency, chemical resistance, toughness and the like, so that the structural strength and the corrosion resistance of the adhesive tape are improved; the preparation method of the adhesive tape improves the super-hydrophobic modification effect of the FAS modifier on the PET film by performing plasma modification on the PET film and performing dip-coating and pull-coating on the PET film by using the silica sol.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (7)
1. A process for preparing an adhesive tape, comprising: the method comprises the following steps:
s1, preparing a base material;
s2, preparing glue layer ingredients;
s3, uniformly coating the adhesive layer materials on one side surface of the base material to obtain the adhesive tape;
and S4, rolling, rewinding, shearing, sampling and packaging the prepared adhesive tape.
2. The process of claim 1, wherein the step S1 is performed by using a super-hydrophobic PET film as the substrate.
3. The process of claim 1, wherein step S2 is performed by using a silicone pressure sensitive adhesive as the adhesive layer formulation.
4. The process of claim 1, wherein the substrate in step S3 has a thickness in the range of 0.025mm ± 0.02mm, the adhesive layer has a thickness in the range of 0.065mm ± 0.02mm, and the total thickness of the adhesive tape is 0.090mm ± 0.02 mm.
5. The process of claim 2, wherein the step S1 further comprises the steps of:
s11, preparing silicon dioxide sol;
s12, carrying out ultrasonic cleaning on a PET film with a preset size in an absolute ethyl alcohol environment for 10min, washing the PET film with ionized water after the ultrasonic cleaning is finished, and drying for 2h at 70 ℃;
s13, carrying out plasma treatment on the PET film treated in the step S12 for 60S under the air atmosphere by 200W power;
s14, dipping the PET film processed in the step S13 into the silica sol prepared in the step S1 by adopting a dipping and pulling method coating mode, and carrying out pulling coating at a pulling speed of 2.0 mm/S;
s15, placing the PET film coated in the step S14 in an oven at 70 ℃ for heating for 2 h;
s16, preparing a FAS modifier, and performing liquid phase modification on the PET film heated for 2 hours in the step S15 in an FAS modifier environment for 30 min;
s17, taking the PET film in the step S16 out of the FAS modifier, and drying in an oven at 80 ℃ for 6h to obtain the super-hydrophobic PET film substrate with high transparency.
6. The process of claim 5, wherein the step S11 further comprises the steps of:
s111, respectively taking 5-15 parts of ethyl orthosilicate, 10-30 parts of absolute ethyl alcohol, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l);
s112, mixing 5-15 parts of absolute ethyl alcohol with ethyl orthosilicate, and magnetically stirring for 30min at room temperature to prepare a solution A;
s113, mixing absolute ethyl alcohol with the mass fraction equal to that in the step S112, 5-10 parts of deionized water and 0.5-1.5 parts of ammonia water (0.24 mol/l) to prepare a solution B;
s114, continuously stirring the solution A, meanwhile, slowly dropwise adding the solution B into the solution A, and continuously stirring for 2 hours in a sealed room-temperature environment;
and S115, after the mixed solution in the step S114 is stirred, aging the mixed solution for 4d in a room temperature environment to obtain the silica sol.
7. The process of claim 5, wherein the step S16 further comprises the steps of:
s161 Fluorodecyl trimethoxy silane is taken and normal hexane is taken as a solvent to prepare the FAS modifier with the mass fraction of 1%.
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