WO2015125866A1 - 撥水/撥油皮膜及びその製造方法 - Google Patents
撥水/撥油皮膜及びその製造方法 Download PDFInfo
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- WO2015125866A1 WO2015125866A1 PCT/JP2015/054626 JP2015054626W WO2015125866A1 WO 2015125866 A1 WO2015125866 A1 WO 2015125866A1 JP 2015054626 W JP2015054626 W JP 2015054626W WO 2015125866 A1 WO2015125866 A1 WO 2015125866A1
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- general formula
- water
- oil repellent
- compound represented
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1681—Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
Definitions
- One embodiment of the present invention relates to a water repellent / oil repellent coating, a water repellent / oil repellent coating manufacturing method, and a precursor solution manufacturing method.
- the dynamic behavior (dynamic wettability) of droplets on the surface of a solid has recently been emphasized as a guide for the performance of removing droplets, and can be evaluated by contact angle hysteresis (for example, patents) Reference 1 and non-patent reference 1).
- Contact angle hysteresis is indicated by the difference ( ⁇ A ⁇ R ) between the advancing contact angle ( ⁇ A ) and the receding contact angle ( ⁇ R ).
- Slide down That is, it can be said that a solid surface having a small contact angle hysteresis is excellent in the performance of removing droplets.
- a solid surface with a large contact angle hysteresis will be “pinned” even if it is a super-water-repellent surface with a static contact angle greater than 150 °.
- Non-Patent Documents 2 and 3 disclose that a coating film prepared by mixing decyltriethoxysilane and tetramethoxysilane is applied to various substrates and dried at room temperature to obtain a transparent coating film. Yes.
- An object of one embodiment of the present invention is to provide a water / oil repellent film having excellent heat resistance and water / oil repellency in view of the problems of the above-described conventional techniques.
- One embodiment of the present invention is formed on a solid surface in a water / oil repellent film, and has a chemical formula
- a three-dimensional crosslinked structure is formed by a siloxane bond.
- One aspect of the present invention is a process for producing a precursor solution by dissolving an organosilane compound in an organic solvent in a method for producing a water / oil repellent film, and a process for applying the precursor solution to a solid surface
- the organosilane compound has the general formula
- n 1, 2 or 3
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a hydrogen atom.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a compound represented by the general formula
- One embodiment of the present invention includes a step of adsorbing a gas or liquid organosilane compound on a solid surface in a method for producing a water / oil repellent film, wherein the organosilane compound has the general formula
- n 1, 2 or 3
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a hydrogen atom.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a compound represented by the general formula
- One embodiment of the present invention is a method for producing a precursor solution by dissolving an organosilane compound in an organic solvent, wherein the organosilane compound has the general formula
- n 1, 2 or 3
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a hydrogen atom.
- n is 1 or 2
- R is an alkoxy group having 1 to 6 carbon atoms, a chloro group, or an acetoxy group.
- a hydrogen atom Or a compound represented by the general formula
- a water / oil repellent film excellent in heat resistance and water / oil repellency can be provided.
- Example 2 is a photograph showing the appearance of a test piece of Example 1. It is a photograph which shows the result of the heat test 3 of the test piece (stainless steel plate) of Example 1.
- FIG. It is a figure which shows the result of the heat test 4 of the test piece (stainless steel plate) of Example 1.
- FIG. It is a photograph which shows the result of the heat test 5 of the test piece (stainless steel plate) of Example 1 and the test piece of Comparative Example 3.
- It is a figure which shows the result of the heat test 6 of the test piece (stainless steel plate) of Example 1.
- FIG. It is a figure which shows the result of the heat test 7 of the test piece (stainless steel plate) of Example 1.
- FIG. It is a photograph which shows the result of the heat test 8 of the test piece (polyimide film) of Example 1, and the test piece of Comparative Example 4.
- the water / oil repellent film is formed on a solid surface, terminated with a group represented by the chemical formula (A), and a three-dimensional crosslinked structure is formed by a siloxane bond. For this reason, the group represented by the chemical formula (A) is present on the surface of the water / oil repellent film.
- the root-mean-square roughness Rq of the water / oil repellent coating is usually 50 nm or less, preferably 1 nm or less, and more preferably 0.5 nm or less. If the root-mean-square roughness Rq of the water / oil repellent film exceeds 50 nm, the oil repellency or transparency decreases.
- the group represented by the chemical formula (A) is excellent in heat resistance and exhibits heat resistance of 450 ° C. or higher in the air, and thus the water / oil repellent coating can maintain its function up to 450 ° C.
- the water / oil repellent film preferably has a sufficient space between methyl groups present on the surface. Thereby, the rotational movement of the methyl group which exists in the surface is not inhibited.
- the molar ratio of alkoxy groups and hydroxyl groups to methyl groups on the surface of the water / oil repellent film is usually 0.1 or less, preferably 0.05 or less, and alkoxy groups or hydroxyl groups are present on the surface. It is particularly preferred not to do so. If the molar ratio of alkoxy groups and hydroxyl groups to methyl groups on the surface of the water / oil repellent film exceeds 0.1, the water / oil repellency of the water / oil repellent film may be lowered.
- the molar ratio of the alkoxy group and the hydroxyl group to the methyl group on the surface of the water / oil repellent film can be calculated using the Cassie equation.
- the mobility of the methyl group present on the surface needs to exhibit a “Liquid-like” behavior. There must be a space in the methyl group that allows rotational movement.
- the phenyl group when a phenyl group is present on the surface instead of a methyl group, the phenyl group does not exhibit “Liquid-like” motility because it has a property of densely gathering due to ⁇ - ⁇ interaction.
- the sliding property of the droplets may be deteriorated from the origin.
- an alkoxy group is present on the surface of the film, when heated to 150 ° C. or higher, the alkoxy group may be eliminated as an alcohol to produce a silanol group.
- hydrolysis and polycondensation sufficiently proceed in a precursor solution described later.
- the water / oil repellent film does not contain an organic group other than the methyl group contained in the group represented by the chemical formula (A).
- the organic group is thermally decomposed to roughen the surface or The surface may become contaminated.
- the ratio of the transmittance of the solid with the water / oil repellent coating formed on the surface to the transmittance of the solid with no water / oil repellent coating formed on the surface is usually 0.95 or more.
- the water / oil repellent film is preferably chemically bonded to the solid surface. Thereby, the adhesion of the water / oil repellent film can be improved.
- the solid is not particularly limited, and examples thereof include metals, metal oxides, alloys, semiconductors, polymers, ceramics, and glass.
- the solid surface shape is not particularly limited, and examples thereof include a flat surface, a curved surface, an uneven surface, a porous surface, and the like, and two or more kinds may be used in combination.
- the water / oil repellent film is excellent in flexibility, even if it is coated on a polymer film, metal foil, etc., it is possible to suppress the occurrence of cracks and peeling due to bending.
- the water / oil repellent coating is applied to a solid surface by applying a precursor solution prepared by dissolving an organic silane compound in an organic solvent, or adsorbing a gas or liquid organosilane compound to the solid surface.
- a precursor solution prepared by dissolving an organic silane compound in an organic solvent, or adsorbing a gas or liquid organosilane compound to the solid surface.
- the organosilane compound is a compound represented by the general formula (B), (C), (D) or (E).
- the solid with the precursor solution coated on the surface usually vaporizes the solvent under atmospheric pressure to crosslink the organosilane compound.
- the temperature at which the solvent is volatilized is usually 0 to 100 ° C., preferably 15 to 30 ° C.
- the time for volatilizing the solvent is usually 0 to 60 seconds, and preferably 0 to 15 seconds.
- the solid that adsorbs the organosilane compound on the surface is usually heated under atmospheric pressure to crosslink the organosilane compound.
- the temperature for heating the solid is usually 50 to 500 ° C., preferably 100 to 350 ° C.
- the solid is a polymer, pre-treat the surface of the solid using oxygen plasma, ozone, ultraviolet light, vacuum ultraviolet light, etc., and then apply the precursor solution to the solid surface to further improve the adhesion. It is preferable to adsorb a gaseous or liquid organosilane compound.
- the organic solvent preferably has a higher vapor pressure than water.
- the organic solvent is not particularly limited as long as it is miscible with water and can dissolve the organic silane compound and its condensation polymer, and examples thereof include methanol, ethanol, isopropanol, tetrahydrofuran, and acetone. It is done. Among these, when a protic solvent is used, an aprotic solvent is preferable because it may remain as an alkoxy group on the surface of the water / oil repellent film.
- the precursor solution preferably further contains a catalyst capable of promoting hydrolysis of the organosilane compound. Since the condensation polymerization rate can be controlled by the catalyst, a precursor solution having a pot life of 30 days or more in a room temperature environment can be prepared. Such a precursor solution can be used after being allowed to stand for 30 days or more in a room temperature environment because the condensation polymerization rate of silanol groups is slow.
- the catalyst is not particularly limited, and examples thereof include hydrogen chloride, acetic acid, phosphoric acid and the like.
- the method for applying the precursor solution is not particularly limited, but spin coating method, dip coating method, roller coating method, bar coating method, ink jet coating method, gravure coating method, spray method, dispenser method, nozzle coating method, slit coating method. Method, die coating method, blade coating method, knife coating method, wire bar coating method, screen printing method and the like.
- the film thickness of the water / oil repellent film can be controlled by adjusting the concentration of the organosilane compound in the precursor solution with an organic solvent.
- a water / oil repellent film may be formed by applying a mixed solution of a solution dissolved in an organic solvent to a solid surface.
- the metal alkoxide is not particularly limited, but the general formula
- n is an integer of 1 to 4
- M is Al, Hf, Si, Ti, Sn, or Zr
- R is an alkyl group having 1 to 15 carbon atoms.
- Perhydropolysilazane is a general formula
- the film thickness of the water / oil repellent film is usually 10 nm to 10 ⁇ m or less, preferably 200 nm to 1 ⁇ m.
- the water / oil repellent coating can make the contact angle hysteresis for a liquid having a surface tension of 18 to 73 dyn / cm 10 ° or less, and can slide a droplet of 5 ⁇ L or more with a tumbling angle of 10 ° or less.
- the contact angle hysteresis is expressed by the equation ⁇ A ⁇ R where ⁇ A [°] is the advancing contact angle and ⁇ R [°] is the receding contact angle. From this, it can be calculated.
- the liquid having a surface tension of 18 to 73 dyn / cm is not particularly limited, but includes n-pentane, n-hexane, ethanol, methanol, silicone oil, acetone, benzene, n-hexadecane, ethylene glycol, iodomethane, water, and the like. Can be mentioned.
- the water / oil repellent film exhibits excellent adhesion to the solid surface because the silanol group produced by hydrolysis of the organosilane compound has high reactivity.
- the polycondensation product of an organic silane compound usually does not include a bonding mode other than a siloxane bond (Si—O bond), a C—Si bond, and a C—H bond
- the water / oil repellent film is Even when heated at 450 ° C. for 1 hour or longer, the performance of removing droplets does not deteriorate. Further, the water / oil repellent coating does not deteriorate the performance of removing droplets even when heated at 350 ° C. for 24 hours or more in an air atmosphere.
- the water / oil repellent film is excellent in heat resistance and adhesion, even when immersed in a liquid having a surface tension of 18 to 73 dyn / cm at a temperature below the boiling point for 24 hours or more, liquid droplets can be formed. The performance to remove does not deteriorate.
- the water / oil repellent film is excellent in plasticity, even if it is bent 50 times or more, the sliding property of the liquid does not decrease.
- the water / oil repellent coating for example, provides lubrication / lubricity to the interior of engines such as automobiles exposed to high temperatures for a long time, prevents corrosion of exhaust pipes / metal materials, and transparent window frames inside the oil pump. It can be applied to an actuator that utilizes the drive of droplets, improvement of visibility, prevention of flux rise, prevention of adhesion of oil in the distillation tower, prevention of adhesion of frying pan, and the like.
- a part means a mass part.
- Example 1 After mixing 33 parts of methyltriethoxysilane, 5 parts of 0.01M hydrochloric acid and 62 parts of ethanol, the mixture was stirred at room temperature for 24 hours to obtain a precursor solution.
- a glass plate, a stainless steel plate (SUS304), and a polyimide film were spin-coated with a precursor solution, and then heated in an oven set at 100 ° C. for 24 hours to have a film thickness of 800 nm and a root mean square roughness Rq of 0.3 nm.
- the following water / oil repellent film was formed to obtain a test piece.
- Fig. 1 shows the appearance of the obtained test piece.
- Fig.1 (a), (b) and (c) are a glass plate, a stainless steel plate, and a polyimide film, respectively.
- Example 1 that the water / oil repellent film of Example 1 is excellent in transparency and adhesion.
- a glass plate and a stainless steel plate were spin-coated with a precursor solution, and then allowed to stand at room temperature for 24 hours to form a water / oil repellent film having a thickness of 700 nm and a root mean square roughness Rq of 1.1 nm. And a test piece was obtained.
- Example 3 The stainless steel plate (SUS304) in Example 1 was used as a test piece.
- Example 4 The polyimide film in Example 1 was used as a test piece.
- Table 1 shows the contact angle values of the test piece (glass plate) of Example 1 before and after heating.
- ⁇ means before heating, and in ⁇ A , ⁇ R and contact angle hysteresis, ⁇ means that the water repellency / oil repellency of the water / oil repellent film is lowered and the contact angle is reduced. It means that it could not be measured.
- Tables 2 to 4 show the contact angle values of the test pieces (glass plates) of Example 1 and Comparative Examples 1 and 2 before and after heating, respectively.
- ⁇ means before heating, and in ⁇ A , ⁇ R and contact angle hysteresis, ⁇ means that the water repellency / oil repellency of the water / oil repellent film is lowered and the contact angle is reduced. It means that it could not be measured.
- Example 1 The test piece (stainless steel plate) of Example 1 was immersed in an oil bath set at 250 ° C. for 5 minutes and then rotated at 5 rpm for 30 hours in an environment of room temperature or 250 ° C. At this time, m-bis (m-phenoxyphenoxy) benzene (m-5P4E) was used as the oil for the oil bath.
- m-bis (m-phenoxyphenoxy) benzene m-5P4E
- FIG. 2 shows the results of the heat resistance test 3 of the test piece (stainless steel plate) of Example 1.
- 2 (a), (b), (c) and (d) are the state immediately after being immersed in an oil bath, the state immediately after being rotated at room temperature, the state immediately after being rotated at 250 ° C., and This is the state after rotating at 250 ° C. for 30 hours.
- the water / oil repellent film of Example 1 can maintain the cleanliness of the surface by heating the liquid having a high viscosity at room temperature to impart fluidity and improving the sliding property of the liquid. Recognize.
- FIG. 3 shows the results of the heat resistance test 4 of the test piece (stainless steel plate) of Example 1.
- FIG. 3 shows that the water / oil repellent film of Example 1 can control the slidability and drivability of the droplets by changing the temperature.
- FIG. 4 shows the results of the heat resistance test 5 of the test piece (stainless steel plate) of Example 1 and the test piece of Comparative Example 3.
- FIG. 4 shows that on the surface of the water / oil repellent film of Example 1, the melted melt with the solder slides down. Such characteristics are effective in preventing clogging due to droplets remaining or solidifying inside a pipe exposed to high temperature.
- FIG. 5 shows the results of the heat resistance test 6 of the test piece (stainless steel plate) of Example 1.
- the water / oil repellent film of Example 1 has a tendency that the falling angle of the droplet tends to decrease as the use environment becomes high, that is, the performance of removing the droplet is improved. Recognize. This is presumably because the surface tension and viscosity of the droplets decrease with increasing temperature.
- Test piece (stainless steel plate) of Example 1 was set to 230 ° C, the other side was set to 50 ° C, and silicone oil was allowed to stand on the high temperature side.
- FIG. 6 shows the results of the heat resistance test 7 of the test piece (stainless steel plate) of Example 1.
- FIG. 6 shows that the droplet moves from the high temperature side to the low temperature side on the surface of the water / oil repellent film of Example 1.
- the moving distance (35 mm) of silicone oil PMM-0021 manufactured by Gelest
- This difference is considered to be due to the fact that the temperature dependence of the surface tension is inherent to the substance, and the rate of change of the surface tension is smaller in the silicone oil.
- the surface temperature on the high temperature side is usually 100 ° C.
- the movement of the droplets was also less than 10 mm.
- the water / oil repellent film of Example 1 is excellent in heat resistance, it has been clarified that even when the surface temperature is 200 ° C. or higher, a spontaneous droplet movement phenomenon occurs. Furthermore, since the water / oil repellent coating of Example 1 has a high temperature durability of a maximum of 450 ° C., a large temperature gradient can be imparted to the surface. For this reason, it is considered that the moving distance of the droplet can be greatly extended as compared with the conventional case.
- FIG. 7 shows the results of the heat resistance test 8 of the test piece (polyimide film) of Example 1 and the test piece of Comparative Example 4.
- FIG. 7 shows that the water / oil repellent film of Example 1 is excellent in plasticity, and the surface cleanliness can be maintained by improving the sliding property of the liquid.
- the water / oil repellent film of Example 1 is excellent in heat resistance and plasticity, and not only can impart the performance of removing droplets to the surface of the solid, but also due to temperature change and temperature gradient, Since sliding and driving properties can be controlled, it is expected to be applied to microchannels using droplet transfer by heat.
- Example 2 After mixing 33 parts of methyltriethoxysilane, 5 parts of 0.01M hydrochloric acid and 62 parts of ethanol, the mixture was stirred at room temperature for a predetermined time to obtain a precursor solution.
- Table 5 shows the contact angle values of the test pieces.
- Example 3 After mixing 3 parts of perhydropolysilazane, 27 parts of dibutyl ether and N, N, N ′, N′-tetramethylhexanediamine (catalytic amount), a predetermined amount of polyhydromethylsiloxane (PHMS) is added to the precursor. A solution was obtained.
- PHMS polyhydromethylsiloxane
- Table 6 shows the contact angle values of the test pieces.
- test piece was heated in an oven set at 300 ° C. for 24 hours.
- Table 7 shows the contact angle values of the heated test pieces.
- Example 4 A predetermined amount of dimethyldiethoxysilane (DMDES), a predetermined amount of tetraethoxysilane (TEOS), 5 parts of 0.01M hydrochloric acid and 62 parts of ethanol were mixed, and then stirred at room temperature for 24 hours to obtain a precursor solution.
- DMDES dimethyldiethoxysilane
- TEOS tetraethoxysilane
- Table 8 shows the contact angle values of the test pieces.
- test piece was heated in an oven set at 300 ° C. for 24 hours.
- Table 9 shows the contact angle values of the heated test pieces.
- Example 5 A test piece was obtained by exposing a tetracyclotetramethylsiloxane vapor to a silicon wafer heated to 80 ° C. for 24 hours.
- test piece was heated in an oven set at 300 ° C. for 24 hours.
- Table 10 shows the contact angle values of the test pieces before and after heating.
- Example 6 Methyltriethoxysilane vapor was exposed to a silicon wafer heated to 80 ° C. for 24 hours to obtain a test piece.
- test piece was heated in an oven set at 300 ° C. for 24 hours.
- Table 11 shows the contact angle values of the test pieces before and after heating.
- Example 7 A predetermined amount of trimethylethoxysilane (TMES), a predetermined amount of tetraethoxysilane (TEOS), 5 parts of 0.01M hydrochloric acid and 62 parts of ethanol were mixed and then stirred at room temperature for 24 hours to obtain a precursor solution.
- TMES trimethylethoxysilane
- TEOS tetraethoxysilane
- the precursor solution was spin-coated on a glass plate, it was heated in an oven set at 100 ° C. for 24 hours to obtain a test piece.
- Table 12 shows the contact angle values of the test pieces.
- test piece was heated in an oven set at 250 ° C. for 24 hours.
- Table 13 shows the contact angle values of the heated specimens.
- test piece was heated in an oven set at 350 ° C. for 24 hours.
- Table 14 shows the value of the contact angle with respect to water of the test piece before and after heating.
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Abstract
Description
θA-θR
から、算出することができる。
メチルトリエトキシシラン33部、0.01M塩酸5部及びエタノール62部を混合した後、室温で24時間攪拌し、前駆体溶液を得た。
テトラメトキシシラン20部、デシルトリエトキシシラン4.5部、エタノール65部及び0.01M塩酸10部を混合した後、室温で24時間撹拌し、前駆体溶液を得た。
テトラメトキシシラン7.8部、(ヘプタデカフルオロ-1,1,2,2-テトラヒドロデシル)トリメトキシシランFAS17(Gelest社製)3.9部、イソプロパノール84部及び0.01M塩酸4部を混合した後、室温で24時間撹拌し、前駆体溶液を得た。
実施例1におけるステンレス鋼板(SUS304)を試験片として用いた。
実施例1におけるポリイミドフィルムを試験片として用いた。
AFMから得られた画像を基に、二乗平均平方根粗さRqを算出した。
所定の温度に設定したオーブンで実施例1の試験片(ガラス板)を1時間加熱した後、水及びn-ヘキサデカンに対する動的接触角(前進接触角θA及び後退接触角θR)を測定し、接触角ヒステリシスを算出した。
接触角計(協和界面社製)を用いて、水及びn-ヘキサデカンに対する動的接触角(前進接触角θA及び後退接触角θR)を測定した後、式
θA-θR
から、接触角ヒステリシスを算出した。
所定の温度に設定したオーブンで実施例1、比較例1、2の試験片(ガラス板)を24時間加熱した後、水及びn-ヘキサデカンに対する接触角ヒステリシスを測定した。
250℃に設定したオイルバスに実施例1の試験片(ステンレス鋼板)を5分間浸漬した後、室温又は250℃の環境下、5rpmで30時間回転させた。このとき、オイルバス用オイルとしては、m-ビス(m-フェノキシフェノキシ)ベンゼン(m-5P4E)を用いた。
25℃の環境でシリコーンオイルを実施例1の試験片(ステンレス鋼板)に滴下した後、230℃まで昇温し、25℃まで冷却するサイクルを繰り返し、25℃及び230℃で水に対する動的接触角を測定した。
実施例1の試験片(ステンレス鋼板)及び比較例3の試験片を5°で傾斜させた後、表面にヤニ入りハンダを静置し、200℃まで昇温した。
m-ビス(m-フェノキシフェノキシ)ベンゼン(m-5P4E)、m-(m-フェノキシフェノキシ)ジフェニル(m-4P2E)、シリコーンオイルPMM-0025(Gelest社製)及びシリコーンオイルPMM-0021(Gelest社製)を、実施例1の試験片(ステンレス鋼板)に滴下し、試験片の表面温度を所定の温度に設定した後、試験片を傾斜させ、転落角を測定した。
実施例1の試験片(ステンレス鋼板)の片側を230℃に、反対側を50℃に設定し、高温側にシリコーンオイルを静置した。
実施例1の試験片(ポリイミドフィルム)及び比較例4の試験片に対して、50回曲げを繰り返した後、250℃に設定したオイルバスに試験片を5分間浸漬した。このとき、オイルバス用オイルとしては、m-ビス(m-フェノキシフェノキシ)ベンゼン(m-5P4E)を用いた。
メチルトリエトキシシラン33部、0.01M塩酸5部及びエタノール62部を混合した後、室温で所定時間攪拌し、前駆体溶液を得た。
パーヒドロポリシラザン3部、ジブチルエーテル27部及びN,N,N’,N’-テトラメチルヘキサンジアミン(触媒量)を混合した後、所定量のポリヒドロメチルシロキサン(PHMS)を添加し、前駆体溶液を得た。
メチルトリエトキシシランの蒸気を80℃に加熱したシリコンウェハに24時間曝露し、試験片を得た。
所定量のトリメチルエトキシシラン(TMES)、所定量のテトラエトキシシラン(TEOS)、0.01M塩酸5部及びエタノール62部を混合した後、室温で24時間攪拌し、前駆体溶液を得た。
Claims (8)
- 二乗平均平方根粗さRqが50nm以下であることを特徴とする請求項1に記載の撥水/撥油皮膜。
- アルコキシ基又はヒドロキシル基が表面に存在しないことを特徴とする請求項1に記載の撥水/撥油皮膜。
- 前記化学式(A)に含まれるメチル基以外の有機基を含まないことを特徴とする請求項1に記載の撥水/撥油皮膜。
- 前記固体の表面と化学結合していることを特徴とする請求項1に記載の撥水/撥油皮膜。
- 有機シラン化合物を有機溶媒中に溶解させて前駆体溶液を製造する工程と、
該前駆体溶液を固体の表面に塗布する工程を有し、
前記有機シラン化合物は、一般式
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、又は、一般式
で表される化合物であることを特徴とする撥水/撥油皮膜の製造方法。 - 気体又は液体の有機シラン化合物を固体の表面に吸着させる工程を有し、
前記有機シラン化合物は、一般式
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、又は、一般式
で表される化合物であることを特徴とする撥水/撥油皮膜の製造方法。 - 有機シラン化合物を有機溶媒中に溶解させて前駆体溶液を製造する方法であって、
前記有機シラン化合物は、一般式
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、一般式
で表される基又は水素原子である。)
で表される化合物、又は、一般式
で表される化合物であることを特徴とする前駆体溶液の製造方法。
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EP15751325.0A EP3109290A4 (en) | 2014-02-21 | 2015-02-19 | Water-repellant/oil-repellant film and production method therefor |
US15/119,437 US10138380B2 (en) | 2014-02-21 | 2015-02-19 | Water/oil repellant coating film and manufacturing method thereof |
CN201580009221.8A CN106029818B (zh) | 2014-02-21 | 2015-02-19 | 拒水/拒油被膜及其制造方法 |
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CN107109123A (zh) | 2014-10-31 | 2017-08-29 | 住友化学株式会社 | 透明被膜 |
US10370546B2 (en) | 2014-10-31 | 2019-08-06 | Sumitomo Chemical Company, Limited | Water/oil-repellent coating composition |
CN107109128B (zh) | 2014-11-12 | 2021-05-25 | 住友化学株式会社 | 疏水疏油涂敷组合物及透明被膜 |
KR102478715B1 (ko) | 2014-11-12 | 2022-12-16 | 스미또모 가가꾸 가부시키가이샤 | 투명 피막 |
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TWI712682B (zh) | 2016-04-28 | 2020-12-11 | 日商住友化學股份有限公司 | 被膜 |
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CN106029818A (zh) | 2016-10-12 |
CN106029818B (zh) | 2018-05-22 |
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JP2014185334A (ja) | 2014-10-02 |
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EP3109290A4 (en) | 2017-01-11 |
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