CN116122081A - Amphiphobic solution and preparation method thereof, and amphiphobic impregnated bond paper and preparation method thereof - Google Patents
Amphiphobic solution and preparation method thereof, and amphiphobic impregnated bond paper and preparation method thereof Download PDFInfo
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- CN116122081A CN116122081A CN202211271468.5A CN202211271468A CN116122081A CN 116122081 A CN116122081 A CN 116122081A CN 202211271468 A CN202211271468 A CN 202211271468A CN 116122081 A CN116122081 A CN 116122081A
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- amphiphobic
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- impregnated bond
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- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 55
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 40
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 40
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 34
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 34
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 34
- 239000003960 organic solvent Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 83
- 239000007921 spray Substances 0.000 claims description 78
- 238000005507 spraying Methods 0.000 claims description 51
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 39
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 38
- 238000002156 mixing Methods 0.000 claims description 30
- 239000011259 mixed solution Substances 0.000 claims description 18
- QTRSWYWKHYAKEO-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(1,1,2,2,2-pentafluoroethoxy)silane Chemical compound FC(F)(F)C(F)(F)O[Si](OC(F)(F)C(F)(F)F)(OC(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F QTRSWYWKHYAKEO-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 13
- 238000003760 magnetic stirring Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000012046 mixed solvent Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 229910052731 fluorine Inorganic materials 0.000 abstract description 4
- 239000011737 fluorine Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000005303 weighing Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 238000003756 stirring Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 11
- 229920000877 Melamine resin Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 235000015112 vegetable and seed oil Nutrition 0.000 description 4
- 239000008158 vegetable oil Substances 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
- D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention relates to the technical field of surface treatment, and provides an amphiphobic solution and a preparation method thereof, and amphiphobic impregnated bond paper and a preparation method thereof. The amphiphobic solution provided by the invention comprises the following components: vinyl polydimethylsiloxane, fluorine-containing siloxane, a silane coupling agent and an organic solvent. The invention adopts the perfluoro siloxane as the raw material, the perfluoro siloxane has better hydrophobic and oleophobic characteristics, and can be crosslinked with the vinyl polydimethylsiloxane to strengthen the hydrophobic and oleophobic characteristics of the perfluoro siloxane, and the formed coating can effectively prevent pollutants such as moisture, greasy dirt and the like from staying on the surface; meanwhile, the adhesive can provide excellent chemical resistance, can ensure the water resistance and oil resistance of the impregnated bond paper facing and maintain the attractive appearance of the impregnated bond paper facing. The invention also adds the silane coupling agent to ensure that the coating formed by the amphiphobic solution is firmly combined with the surface of the impregnated bond paper, thereby improving the weather resistance of the bond paper and further maintaining the long-term beautiful and clean appearance of the bond paper.
Description
Technical Field
The invention relates to the technical field of surface treatment, in particular to an amphiphobic solution and a preparation method thereof, and amphiphobic impregnated bond paper and a preparation method thereof.
Background
The impregnated bond paper is a bond paper obtained by impregnating resin with plain paper or printing decorative paper and drying to a certain extent, and can be glued with an artificial board substrate after hot pressing. The impregnated bond paper is mainly used as a facing material of artificial boards and is widely applied to the fields of furniture manufacture, vertical face decoration in vehicles and ships, interior decoration, and the like. Because the decorative surface made of the impregnated bond paper is directly exposed in the use environment and even can be contacted with people or articles, substances carried by the people or articles, such as water, hand sweat and greasy dirt, can adhere to the surface of the bond paper to form stains in the contact process, and the cleanness and the neatness of the surface of the bond paper are difficult to maintain for a long time.
The existing adhesive film paper, such as melamine formaldehyde resin impregnated adhesive film paper, has poor hydrophobicity and oleophobicity, and is difficult to maintain the cleanliness of the surface of the adhesive film paper.
Disclosure of Invention
In view of the above, the invention provides an amphiphobic solution and a preparation method thereof, and amphiphobic impregnated bond paper and a preparation method thereof. The amphiphobic solution provided by the invention can be coated on impregnated bond paper to form an amphiphobic film with good water and oil repellency, and can effectively prevent pollutants such as water or oil stains from staying on the surface.
In order to achieve the above object, the present invention provides the following technical solutions:
the amphiphobic solution is prepared from the following raw materials:
vinyl polydimethylsiloxane, perfluorosiloxane, silane coupling agent and organic solvent;
the mass ratio of the vinyl polydimethylsiloxane, the perfluoro siloxane and the silane coupling agent is 80-120:8-12:1.5-3;
the mass ratio of the vinyl polydimethylsiloxane to the organic solvent is 80-120:171.07-200.03; the organic solvent comprises n-hexane and absolute ethyl alcohol.
Preferably, the perfluorosiloxane comprises perfluorodecyl triethoxysilane and the silane coupling agent comprises KH570.
Preferably, the volume ratio of the n-hexane to the absolute ethyl alcohol is 80-100:150-170.
The invention also provides a preparation method of the amphiphobic solution according to the scheme, which comprises the following steps:
mixing vinyl polydimethylsiloxane, perfluorosiloxane, a silane coupling agent and an organic solvent to obtain the amphiphobic solution;
the organic solvent comprises n-hexane and absolute ethyl alcohol.
Preferably, the mixing comprises the steps of:
mixing the silane coupling agent with part of the absolute ethyl alcohol to obtain a silane coupling agent solution;
adding the vinyl polydimethylsiloxane into a mixed solvent composed of the n-hexane and the rest of the absolute ethyl alcohol for first mixing to obtain a first mixed solution;
adding the perfluorinated siloxane into the first mixed solution for second mixing to obtain a second mixed solution;
and adding the silane coupling agent solution into the second mixed solution for third mixing.
Preferably, the third mixing mode is magnetic stirring, the rotating speed of the magnetic stirring is 300-600 rpm, and the time is 30-60 min.
Preferably, the dosage of part of the absolute ethyl alcohol is 5/17-1/3 of the dosage of the absolute ethyl alcohol.
The invention also provides the amphiphobic impregnated bond paper, which comprises the impregnated bond paper and the amphiphobic coating attached to the surface of the impregnated bond paper; the double-hydrophobic coating is formed by the double-hydrophobic solution;
the amphiphobic solution is the amphiphobic solution prepared by the scheme or the preparation method.
The invention also provides a preparation method of the amphiphobic impregnated bond paper, which comprises the following steps of:
coating the amphiphobic solution on the surface of the impregnated bond paper to obtain precoated impregnated bond paper;
and drying the precoated impregnated bond paper to obtain the amphiphobic impregnated bond paper.
Preferably, the coating is spraying, and the caliber of a spray nozzle of a spray gun used for spraying is 1.2-2.0 mm; the spraying pressure is 0.4-0.8 MPa; the width of the spraying fan surface of the spraying is 8-12 cm; the distance between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is 15-30 cm; the angle between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is 60-90 degrees; the moving speed of the spray gun is 30-60 cm/s; the spray surface formed by spraying the next gun of the spray gun used for spraying is overlapped with the spray surface formed by the previous gun by 1/3-2/3 area.
The invention provides an amphiphobic solution, which is prepared from the following components: vinyl polydimethylsiloxane, fluorine-containing siloxane, a silane coupling agent and an organic solvent; the mass ratio of the vinyl polydimethylsiloxane, the perfluoro siloxane and the silane coupling agent is 80-120:8-12:1.5-3; the mass ratio of the vinyl polydimethylsiloxane to the organic solvent is 80-120:171.07-200.03; the organic solvent comprises n-hexane and absolute ethyl alcohol. The amphiphobic solution provided by the invention adopts the perfluoro siloxane as one of the raw materials, the perfluoro siloxane has good hydrophobic and oleophobic characteristics, and can be crosslinked with the vinyl polydimethylsiloxane to strengthen the hydrophobic and oleophobic characteristics of the vinyl polydimethylsiloxane, and the formed coating can effectively prevent pollutants such as moisture or greasy dirt from staying on the surface; the amphiphobic solution provided by the invention can also provide excellent chemical resistance, can ensure the water resistance and oil resistance of the impregnated film paper facing, and maintains the attractive appearance of the impregnated film paper facing. The invention also adds the silane coupling agent to ensure that the coating formed by the amphiphobic solution is firmly combined with the surface of the impregnated bond paper, thereby improving the weather resistance of the bond paper and further maintaining the long-term beautiful and clean appearance of the bond paper. The organic solution adopted by the invention has good solubility on vinyl polydimethylsiloxane, fluorine-containing siloxane and silane coupling agent, is favorable for improving the mixing effect of the components, can ensure that the components exist stably for a certain time, and is convenient for carrying out and completing spraying operation after preparing the solution.
The invention also provides a preparation method of the amphiphobic solution. The preparation method provided by the invention has simple steps and is convenient to operate.
The invention also provides the amphiphobic impregnated bond paper, which comprises the impregnated bond paper and the amphiphobic coating attached to the surface of the impregnated bond paper; the double-hydrophobic coating is prepared from the double-hydrophobic solution; the amphiphobic solution is the amphiphobic solution prepared by the scheme or the preparation method. The amphiphobic impregnated bond paper prepared by the invention has good hydrophobicity and oleophobicity, can effectively prevent pollutants such as moisture or greasy dirt from staying on the surface, and maintains the attractive appearance of the amphiphobic impregnated bond paper.
The invention also provides a preparation method of the amphiphobic impregnated bond paper, which is simple in steps, easy to operate and suitable for industrial production.
Drawings
FIG. 1 is a schematic view of the contact angle of water drops of the amphiphobic impregnated paper film prepared in example 3 of the invention;
fig. 2 is a schematic diagram of the contact angle of vegetable oil drops of the amphiphobic impregnated paper film prepared in example 3 of the invention.
Detailed Description
The invention provides an amphiphobic solution, which is prepared from the following components:
vinyl polydimethylsiloxane, perfluorosiloxane, silane coupling agent and organic solvent;
the mass ratio of the vinyl polydimethylsiloxane, the perfluoro siloxane and the silane coupling agent is 80-120:8-12:1.5-3;
the mass ratio of the vinyl polydimethylsiloxane to the organic solvent is 80-120:171.07-200.03; the organic solvent comprises n-hexane and absolute ethyl alcohol.
The preparation raw materials used in the invention are all commercially available unless otherwise specified.
In the present invention, the perfluorosiloxane preferably includes perfluorodecyl triethoxysilane, and the silane coupling agent preferably includes KH570. In the invention, the mass ratio of the vinyl polydimethylsiloxane, the perfluoro siloxane and the silane coupling agent is 80-120:8-12:1.5-3, preferably 90-120:9-12:2-3, and more preferably 120:12:3. In the present invention, the mass ratio of the vinyl polydimethylsiloxane to the organic solvent is 80 to 120:171.07 to 200.03, preferably 90 to 120:185.55 to 200.03, and more preferably 120:200.03. In the present invention, the organic solvent includes n-hexane and absolute ethanol, and the volume ratio of the n-hexane to the absolute ethanol is preferably 80 to 100:150 to 170, more preferably 90 to 100:160 to 170, and further preferably 100:170. In the present invention, perfluorodecyl triethoxysilane itself has water repellency and oil repellency; the vinyl polydimethylsiloxane and the perfluorodecyl triethoxysilane are crosslinked to strengthen the characteristics of hydrophobicity and oleophobicity, and can also increase the chemical resistance of the coating; while KH570 does not affect the chemical properties of perfluorodecyl triethoxysilane and vinyl polydimethylsiloxane, so that the hydrophobic and oleophobic effects of the coating can be ensured, and meanwhile, the adhesion between the film layer and the impregnated paper can be enhanced by KH570, and the weather resistance of the impregnated paper is improved. The organic solution adopted by the invention has good solubility on vinyl polydimethylsiloxane, fluorine-containing siloxane and silane coupling agent, is favorable for improving the mixing effect of the components, can ensure that the components exist stably for a certain time, and is convenient for carrying out and completing spraying operation after preparing the solution.
The invention also provides a preparation method of the amphiphobic solution according to the scheme, which comprises the following steps:
mixing vinyl polydimethylsiloxane, perfluorosiloxane, a silane coupling agent and an organic solvent to obtain the amphiphobic solution; the organic solvent comprises n-hexane and absolute ethyl alcohol.
In the present invention, the mixing preferably includes the steps of:
mixing the silane coupling agent with part of the absolute ethyl alcohol to obtain a silane coupling agent solution;
adding the vinyl polydimethylsiloxane into a mixed solvent composed of the n-hexane and the rest of the absolute ethyl alcohol for first mixing to obtain a first mixed solution;
adding the perfluorinated siloxane into the first mixed solution for second mixing to obtain a second mixed solution;
and adding the silane coupling agent solution into the second mixed solution for third mixing.
The silane coupling agent and part of the absolute ethyl alcohol are mixed to obtain a silane coupling agent solution. In the present invention, the amount of the partial absolute ethyl alcohol is preferably 5/17 to 1/3, more preferably 5/17 to 5/11, still more preferably 5/17 of the amount of the absolute ethyl alcohol. The mode of mixing the silane coupling agent and a part of the absolute ethyl alcohol is not particularly required in the present invention, so that the silane coupling agent can be completely dissolved in the absolute ethyl alcohol.
The vinyl polydimethylsiloxane is added into a mixed solvent composed of the n-hexane and the rest of the absolute ethyl alcohol for first mixing, so that a first mixed liquid is obtained. The mode of the first mixing is not particularly limited in the present invention, and the vinyl polydimethylsiloxane may be completely dissolved in the mixed solvent composed of the n-hexane and the remaining absolute ethyl alcohol.
After the first mixed solution is obtained, the perfluoro siloxane is added into the first mixed solution for second mixing, so that a second mixed solution is obtained. The mode of the second mixing is not particularly limited in the present invention, and the perfluorosiloxane may be completely dissolved in the first mixed solution.
After the second mixed solution is obtained, the silane coupling agent solution is added into the second mixed solution for third mixing, so that the amphiphobic solution is obtained. In the present invention, the third mixing means is preferably magnetic stirring, the rotation speed of the magnetic stirring is preferably 300 to 600rpm, more preferably 400 to 550rpm, still more preferably 450 to 500rpm, and the time of the magnetic stirring is preferably 30 to 60min, more preferably 35 to 50min, still more preferably 40 to 45min. The invention adopts a magnetic stirring mode to improve the mixing effect of the components and uniformly mix the components.
The invention also provides the amphiphobic impregnated bond paper, which comprises the impregnated bond paper and the amphiphobic coating attached to the surface of the impregnated bond paper; the double-hydrophobic coating is prepared from the double-hydrophobic solution; the amphiphobic solution is the amphiphobic solution prepared by the scheme or the preparation method. In a specific embodiment of the present invention, the impregnated bond paper is preferably melamine impregnated bond paper.
The invention also provides a preparation method of the amphiphobic impregnated bond paper, which comprises the following steps of: coating the amphiphobic solution on the surface of the impregnated bond paper to obtain precoated impregnated bond paper; and drying the precoated impregnated bond paper to obtain the amphiphobic impregnated bond paper.
In the invention, the coating is spraying, and the caliber of a spray nozzle of a spray gun used for spraying is preferably 1.2-2.0 mm, more preferably 1.2-1.6 mm, and even more preferably 1.2mm; the pressure of the spraying is preferably 0.4 to 0.8MPa, more preferably 0.45 to 0.6MPa, and even more preferably 0.5MPa; the width of the spraying fan surface of the spraying is 8-12 cm, more preferably 8-10 cm, and even more preferably 8cm; the distance between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is preferably 15-30 cm, more preferably 15-20 cm, and even more preferably 15cm; the angle between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is preferably 60-90 degrees, more preferably 70-90 degrees, and even more preferably 90 degrees; the moving speed of the spray gun is 30-60 cm/s, more preferably 35-50 cm/s, still more preferably 40-45 cm/s; the spraying surface formed by spraying of the next gun and the spraying surface formed by the last gun of the spray gun are overlapped by 1/3-2/3 area, more preferably 1/3-1/2 area, and still more preferably 1/3 area.
In the present invention, the drying means is preferably natural drying, and the natural drying time is preferably 24 to 36 hours, more preferably 24 hours.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention.
Example 1
A preparation method of amphiphobic impregnated bond paper comprises the following steps:
step 1: weighing 80mL of normal hexane and 100mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 80g of vinyl polydimethylsiloxane and adding the vinyl polydimethylsiloxane into the solution obtained in the step 1;
step 3: weighing 8g of perfluorodecyl triethoxysilane and adding the perfluorodecyl triethoxysilane into the solution obtained in the step 2;
step 4: 1.5g KH570 is weighed and added into 50mL absolute ethanol solution, and the mixture is stirred uniformly by a glass rod;
step 5: adding the solution obtained in the step 4 into the solution obtained in the step 3, and magnetically stirring at 600rpm for 30min;
step 6: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 7: naturally drying for 24 hours to obtain the amphiphobic impregnated bond paper.
Example 2
A preparation method of amphiphobic impregnated bond paper comprises the following steps:
step 1: weighing 90mL of normal hexane and 110mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 90g of vinyl polydimethylsiloxane and adding the vinyl polydimethylsiloxane into the solution obtained in the step 1;
step 3: 9g of perfluorodecyl triethoxysilane is weighed and added into the solution obtained in the step 2;
step 4: weighing 2g KH570, adding into 50mL absolute ethanol solution, and stirring with a glass rod;
step 5: adding the solution obtained in the step 4 into the solution obtained in the step 3, and magnetically stirring at 500rpm for 40min;
step 6: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 7: naturally drying for 24 hours to obtain the amphiphobic impregnated bond paper.
Example 3
A preparation method of amphiphobic impregnated bond paper comprises the following steps:
step 1: weighing 100mL of normal hexane and 120mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 120g of vinyl polydimethylsiloxane and adding the vinyl polydimethylsiloxane into the solution obtained in the step 1;
step 3: weighing 12g of perfluorodecyl triethoxysilane and adding the perfluorodecyl triethoxysilane into the solution obtained in the step 2;
step 4: 3g KH570 is weighed and added into 50mL absolute ethanol solution, and the mixture is stirred uniformly by a glass rod;
step 5: adding the solution obtained in the step 4 into the solution obtained in the step 3, and magnetically stirring at 400rpm for 60min;
step 6: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 7: naturally drying for 24 hours to obtain the amphiphobic impregnated bond paper.
Comparative example 1
A preparation method of spray-coating impregnated bond paper comprises the following steps:
step 1: weighing 100mL of normal hexane and 120mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 120g of vinyl polydimethylsiloxane and adding the vinyl polydimethylsiloxane into the solution obtained in the step 1;
step 3: weighing 12g of perfluorodecyl triethoxysilane and adding the perfluorodecyl triethoxysilane into the solution obtained in the step 2;
step 4: magnetically stirring the solution obtained in the step 2 at 600rpm for 30min;
step 5: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 6: and naturally drying for 24 hours to obtain the spray-coated impregnated bond paper.
Comparative example 2
A preparation method of spray-coating impregnated bond paper comprises the following steps:
step 1: weighing 100mL of normal hexane and 120mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 120g of vinyl polydimethylsiloxane and adding the vinyl polydimethylsiloxane into the solution obtained in the step 1;
step 3: 3g KH570 is weighed and added into 50mL absolute ethanol solution, and the mixture is stirred uniformly by a glass rod;
step 4: adding the solution obtained in the step 3 into the solution obtained in the step 2, and magnetically stirring at 600rpm for 30min;
step 5: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 6: and naturally drying for 24 hours to obtain the spray-coated impregnated bond paper.
Comparative example 3
A preparation method of spray-coating impregnated bond paper comprises the following steps:
step 1: weighing 100mL of normal hexane and 120mL of absolute ethyl alcohol, adding into a beaker, and uniformly stirring by using a glass rod;
step 2: weighing 12g of perfluorodecyl triethoxysilane and adding the perfluorodecyl triethoxysilane into the solution obtained in the step 1;
step 3: 3g KH570 is weighed and added into 50mL absolute ethanol solution, and the mixture is stirred uniformly by a glass rod;
step 4: adding the solution obtained in the step 3 into the solution obtained in the step 2, and magnetically stirring at 600rpm for 30min;
step 5: and (5) uniformly spraying the solution obtained in the step (5) on the surface of the melamine impregnated bond paper by using a spray gun. The caliber of the spray gun is 1.2mm, the spraying pressure is 0.5MPa, the spraying surface is a sector with the width of 8cm, the distance between the spray head and the surface of the sprayed object is 15cm, the moving speed of the spray gun is 40cm/s, the angle between the spray head and the surface of the sprayed object is 90 degrees, and the next spray gun and the last spray gun are sprayed for 1/3 area.
Step 6: and naturally drying for 24 hours to obtain the spray-coated impregnated bond paper.
Cutting the impregnated bond paper prepared in examples 1-3 and the spray coated impregnated bond paper prepared in comparative examples 1-3 into samples with the size of 1 x 1m, respectively dripping water drops and vegetable oil drops on the surfaces of the samples, and measuring the contact angles of the samples; after the measurement, each sample was left for 30d in an indoor environment at 25℃and 50% air humidity, and water droplets and vegetable oil droplets were added dropwise thereto, respectively, and the contact angle was measured. The measurement results are shown in table 1.
TABLE 1 hydrophobic oleophobic results of the impregnated bond papers prepared in examples 1 to 3 and the spray impregnated bond papers prepared in comparative examples 1 to 3
As can be seen from Table 1, the amphiphobic impregnated bond papers prepared in examples 1 to 3 have good hydrophobic and oleophobic effects initially and still have good hydrophobic and oleophobic effects after being placed for 30 days. In the initial state, the schematic water drop contact angle and the schematic vegetable oil drop contact angle of the amphiphobic impregnated bond paper prepared in example 3 are respectively shown in fig. 1 and fig. 2. As can be seen from fig. 1 and 2, the amphiphobic impregnated bond paper prepared in example 3 has good hydrophobic and oleophobic effects in an initial state.
The spray-coated impregnated bond paper prepared in comparative example 1 has good hydrophobic and oleophobic effects initially, but after 30 days, the hydrophobic and oleophobic effects are obviously reduced, and the surface can not be maintained clean for a long time.
The spray-coated impregnated bond paper prepared in comparative example 2 has no hydrophobic and oleophobic effects initially, and further cannot maintain the surface clean for a long time. As can be seen from Table 1, the spray coated impregnated bond paper prepared in comparative example 3 has a good hydrophobic and oleophobic effect both initially and after 30 days of standing, but the overall effect is not as good as that of the amphiphobic impregnated bond papers prepared in examples 1 to 3. In summary, the amphiphobic impregnated bond paper prepared in examples 1-3 has better hydrophobic and oleophobic effects, and can maintain long-term attractive and clean appearance of the bond paper.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The amphiphobic solution is characterized by comprising the following raw materials:
vinyl polydimethylsiloxane, perfluorosiloxane, silane coupling agent and organic solvent;
the mass ratio of the vinyl polydimethylsiloxane, the perfluoro siloxane and the silane coupling agent is 80-120:8-12:1.5-3;
the mass ratio of the vinyl polydimethylsiloxane to the organic solvent is 80-120:171.07-200.03; the organic solvent comprises n-hexane and absolute ethyl alcohol.
2. The amphiphobic solution of claim 1, wherein the perfluorosiloxane comprises perfluorodecyl triethoxysilane and the silane coupling agent comprises KH570.
3. The amphiphobic solution of claim 1, wherein the volume ratio of n-hexane to absolute ethanol is 80-100:150-170.
4. A method for preparing an amphiphobic solution according to any one of claims 1 to 3, comprising the steps of:
mixing vinyl polydimethylsiloxane, perfluorosiloxane, a silane coupling agent and an organic solvent to obtain the amphiphobic solution;
the organic solvent comprises n-hexane and absolute ethyl alcohol.
5. The method of preparing according to claim 4, wherein the mixing comprises the steps of:
mixing the silane coupling agent with part of the absolute ethyl alcohol to obtain a silane coupling agent solution;
adding the vinyl polydimethylsiloxane into a mixed solvent composed of the n-hexane and the rest of the absolute ethyl alcohol for first mixing to obtain a first mixed solution;
adding the perfluorinated siloxane into the first mixed solution for second mixing to obtain a second mixed solution;
and adding the silane coupling agent solution into the second mixed solution for third mixing.
6. The method according to claim 5, wherein the third mixing is magnetic stirring, and the rotation speed of the magnetic stirring is 300-600 rpm for 30-60 min.
7. The method according to claim 5, wherein the amount of the anhydrous alcohol is 5/17 to 1/3 of the amount of the anhydrous alcohol.
8. The amphiphobic impregnated bond paper is characterized by comprising impregnated bond paper and an amphiphobic coating attached to the surface of the impregnated bond paper; the double-hydrophobic coating is formed by the double-hydrophobic solution;
the amphiphobic solution is an amphiphobic solution according to any one of claims 1 to 3 or an amphiphobic solution prepared by the preparation method according to any one of claims 4 to 7.
9. The method for preparing the amphiphobic impregnated bond paper of claim 8, comprising the steps of:
coating the amphiphobic solution on the surface of the impregnated bond paper to obtain precoated impregnated bond paper;
and drying the precoated impregnated bond paper to obtain the amphiphobic impregnated bond paper.
10. The preparation method according to claim 9, wherein the coating is spraying, and the caliber of a spray head of a spray gun used for spraying is 1.2-2.0 mm; the spraying pressure is 0.4-0.8 MPa; the width of the spraying fan surface of the spraying is 8-12 cm; the distance between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is 15-30 cm; the angle between the spray head of the spray gun used for spraying and the surface of the impregnated bond paper is 60-90 degrees; the moving speed of the spray gun is 30-60 cm/s; the spray surface formed by spraying the next gun of the spray gun used for spraying is overlapped with the spray surface formed by the previous gun by 1/3-2/3 area.
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