CN112063319A - High-temperature-resistant and water-resistant pre-coating film and preparation process and application thereof - Google Patents
High-temperature-resistant and water-resistant pre-coating film and preparation process and application thereof Download PDFInfo
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- CN112063319A CN112063319A CN202010963405.0A CN202010963405A CN112063319A CN 112063319 A CN112063319 A CN 112063319A CN 202010963405 A CN202010963405 A CN 202010963405A CN 112063319 A CN112063319 A CN 112063319A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000003292 glue Substances 0.000 claims abstract description 37
- 239000010410 layer Substances 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000000047 product Substances 0.000 claims description 18
- 150000001451 organic peroxides Chemical class 0.000 claims description 15
- 230000002745 absorbent Effects 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- -1 polybutylene terephthalate Polymers 0.000 claims description 13
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 claims description 12
- 230000003712 anti-aging effect Effects 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 12
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 claims description 12
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 12
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 6
- 238000003851 corona treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims description 5
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims description 5
- 229940005642 polystyrene sulfonic acid Drugs 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- SYXTYIFRUXOUQP-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy butaneperoxoate Chemical compound CCCC(=O)OOOC(C)(C)C SYXTYIFRUXOUQP-UHFFFAOYSA-N 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- KRDXTHSSNCTAGY-UHFFFAOYSA-N 2-cyclohexylpyrrolidine Chemical compound C1CCNC1C1CCCCC1 KRDXTHSSNCTAGY-UHFFFAOYSA-N 0.000 claims description 4
- HTCRKQHJUYBQTK-UHFFFAOYSA-N 2-ethylhexyl 2-methylbutan-2-yloxy carbonate Chemical compound CCCCC(CC)COC(=O)OOC(C)(C)CC HTCRKQHJUYBQTK-UHFFFAOYSA-N 0.000 claims description 4
- FSGAMPVWQZPGJF-UHFFFAOYSA-N 2-methylbutan-2-yl ethaneperoxoate Chemical compound CCC(C)(C)OOC(C)=O FSGAMPVWQZPGJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract description 7
- 239000012790 adhesive layer Substances 0.000 abstract description 7
- 230000001737 promoting effect Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 239000007888 film coating Substances 0.000 abstract description 2
- 238000009501 film coating Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011550 stock solution Substances 0.000 description 5
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical group OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- 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
- C09J2475/00—Presence of polyurethane
- C09J2475/003—Presence of polyurethane in the primer coating
-
- 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
- C09J2477/00—Presence of polyamide
- C09J2477/006—Presence of polyamide in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a high-temperature-resistant and water-resistant pre-coating film and a preparation process and application thereof.A high-temperature-resistant mixed adhesive layer is arranged on a base film, so that the heat resistance and the chemical resistance of the adhesive layer can be effectively improved, and the pre-coating film has excellent high-temperature resistance; moreover, the adhesion promoting layer is arranged between the high-temperature resistant mixed glue layer and the base film, so that the adhesive property of the adhesion promoting layer can be enhanced, and the adhesive strength is more than or equal to 5.0N/m, thereby ensuring the adhesive capacity of the high-temperature resistant mixed glue layer and the base film; the precoating film prepared by the preparation process disclosed by the invention has the advantages of excellent high-temperature resistance and water resistance, improved wear resistance, good flatness after film coating, no bubble phenomenon, difficulty in peeling after product coating, no bubble and film stripping phenomenon in one year in outdoor environment, no scratch or fracture of the precoating film due to common collision phenomenon and no rolling phenomenon at the edge.
Description
Technical Field
The invention relates to the field of pre-coating films, in particular to a high-temperature-resistant and water-resistant pre-coating film applied to metal products such as security doors, LED lamp reflectors, iron drums and the like, and a preparation process and application thereof.
Background
The film covering is to cover the plastic film on the iron plate, the adhesive is used in the middle, and after heating and pressurizing treatment, the two materials with different properties are bonded together to form the iron/plastic combined surface decoration processing technology. The metal packaging material plays a role in protecting and decorating metal iron plates, can be widely applied to the field of metal packaging, such as chemical barrels, food cans, sundry cans, mechanical equipment and the like, and can also be applied to the field of decoration, such as security doors, LED lamp reflectors, iron barrels, draw-bar boxes, electrical appliances and the like.
However, most of the precoating films have poor performance effects on metal products at present, the service life is short, and the service life can be further shortened if the precoating films are collided in the using process, the film and the compound glue thereof are easy to break, the broken part of the film is easy to curl up and seep water due to low peeling strength of the film, and the film is accelerated to corrode under the influence of dust impurities and water vapor in the air, so that the area of the film which loses effect is larger and larger. In addition, the existing precoating film has poor high temperature resistance, and after the precoating film is applied to metal products, the adhesion between the film and the products is increasingly poor due to the heat absorption capacity of most metal products, particularly metal products used outdoors, and the film on the metal products usually starts to roll from a crack and the edge of the film after being used for half a month.
Disclosure of Invention
In order to overcome the problems, the invention provides a precoating film preparation process and application, wherein the precoating film can be applied to metal products and has excellent high-temperature resistance and water resistance.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a high-temperature resistant and waterproof precoating film comprises a base film and coating layers formed by coating high-temperature resistant mixed glue on the upper and lower surfaces of the base film; the high-temperature resistant mixed glue comprises the following components in percentage by weight: 40-80% of ethylene glycol dimethacrylate, 10-15% of polybutylene terephthalate, 2-10% of organic peroxide, 0.01-0.1% of octadecyl methacrylate, 0.5-1% of methacrylic acid, 0.3-0.9% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
Specifically, the organic peroxide is one or a mixture of more than two of tert-butyl cumyl peroxide, tert-amyl peroxy-2-ethyl hexyl carbonate, ethyl 3, 3-bis (tert-butylperoxy) butyrate, tert-amyl peroxyacetate and dicumyl peroxide.
Specifically, a tackifying layer is arranged between the base film and the coating layer, and the dry coating weight of the tackifying layer is 0.1-2.3g per square meter.
More specifically, the adhesion promotion layer comprises the following components in percentage by weight: 30-60% of water-based PU resin emulsion, 12-23% of poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid, 8-12% of isocyanate curing agent, 1-5% of tackifier, 8-15% of diluent and 0.5% of defoaming agent.
The preparation process of the high-temperature-resistant and water-resistant pre-coating film comprises the following steps:
1) firstly, carrying out double-sided corona treatment on the base film to enable the base film to reach a corona value of more than 46 dyne;
2) feeding the base film into a spraying space of a gluing machine, pumping the tackifying layer solution by using a pumping pump, feeding the tackifying layer solution into an atomizing nozzle to be sprayed on the surface of the base film, and drying for 10-20min at the drying temperature of 30-45 ℃;
3) pumping the high-temperature resistant mixed glue by a pump, sending the high-temperature resistant mixed glue into an atomizing nozzle to spray the mixed glue on the tackifying layer, drying the mixed glue for 10 to 20min at the drying temperature of between 30 and 45 ℃ to obtain a pre-coated film semi-finished product
4) And then carrying out antistatic or corona treatment on the semi-finished product of the pre-coating film to obtain the high-temperature-resistant and water-resistant pre-coating film.
Specifically, in the step 3), the preparation process of the high-temperature-resistant mixed glue comprises the following steps:
a. adding ethylene glycol dimethacrylate, polybutylene terephthalate, an antioxidant, an anti-aging agent and 40% of water into a dispersion machine, dispersing at a high speed of 1200r/min for 20-40min, and keeping the temperature in a stirring cavity at 40-60 ℃ to obtain a component A;
b. adding organic peroxide, octadecyl methacrylate, methacrylic acid, ultraviolet absorbent and the rest water into a dispersion machine, dispersing at high speed for 20-40min at the rotation speed of 1500-;
c. slowly adding the component B in the dispersion process of the component A, and adjusting the rotating speed to 400-800r/min for high-speed dispersion for 2-4h to obtain the high-temperature-resistant mixed glue.
Specifically, the high-temperature-resistant and water-resistant pre-coating film is used for coating a film on the surface of a metal product.
More specifically, the metal product comprises a security door, an LED lamp reflector, a metal barrel, a metal draw-bar box and a metal electrical appliance shell.
The technical scheme has the advantages that:
the invention provides a high-temperature-resistant and water-resistant pre-coating film and a preparation process and application thereof.A high-temperature-resistant mixed adhesive layer is arranged on a base film, so that the heat resistance and the chemical resistance of the adhesive layer can be effectively improved, and the pre-coating film has excellent high-temperature resistance; moreover, the adhesion promoting layer is arranged between the high-temperature resistant mixed glue layer and the base film, so that the adhesive property of the adhesion promoting layer can be enhanced, and the adhesive strength is more than or equal to 5.0N/m, thereby ensuring the adhesive capacity of the high-temperature resistant mixed glue layer and the base film; the precoating film prepared by the preparation process disclosed by the invention has the advantages of excellent high-temperature resistance and water resistance, improved wear resistance, good flatness after film coating, no bubble phenomenon, difficulty in peeling after product coating, no bubble and film stripping phenomenon in one year in outdoor environment, no scratch or fracture of the precoating film due to common collision phenomenon and no rolling phenomenon at the edge.
The technical solutions of the present invention will be described clearly and completely with reference to the following detailed description, and it should be understood that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Detailed Description
Example 1
A high-temperature resistant and waterproof precoating film comprises a base film and coating layers formed by coating high-temperature resistant mixed glue on the upper and lower surfaces of the base film; the high-temperature resistant mixed glue comprises the following components in percentage by weight: 40-80% of ethylene glycol dimethacrylate, 10-15% of polybutylene terephthalate, 2-10% of organic peroxide, 0.01-0.1% of octadecyl methacrylate, 0.5-1% of methacrylic acid, 0.3-0.9% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
Preferably, the high-temperature resistant mixed glue comprises the following components in percentage by weight: 62 percent of ethylene glycol dimethacrylate, 14 percent of polybutylene terephthalate, 7 percent of organic peroxide, 0.04 percent of octadecyl methacrylate, 0.5 percent of methacrylic acid, 0.5 percent of antioxidant, 0.1 to 0.5 percent of age resister, 0.1 to 0.5 percent of ultraviolet absorbent, 0.5 percent of defoaming agent, 1 percent of film forming agent and the balance of water.
Specifically, the organic peroxide is one or a mixture of more than two of tert-butyl cumyl peroxide, tert-amyl peroxy-2-ethyl hexyl carbonate, ethyl 3, 3-bis (tert-butylperoxy) butyrate, tert-amyl peroxyacetate and dicumyl peroxide.
Specifically, a tackifying layer is arranged between the base film and the coating layer, and the dry coating weight of the tackifying layer is 0.1-2.3g per square meter.
More specifically, the adhesion promotion layer comprises the following components in percentage by weight: 30-60% of water-based PU resin emulsion, 12-23% of poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid, 8-12% of isocyanate curing agent, 1-5% of tackifier, 8-15% of diluent and 0.5% of defoaming agent.
The preparation process of the high-temperature-resistant and water-resistant pre-coating film comprises the following steps:
1) firstly, carrying out double-sided corona treatment on the base film to enable the base film to reach a corona value of more than 46 dyne;
2) feeding the base film into a spraying space of a gluing machine, pumping the tackifying layer solution by using a pumping pump, feeding the tackifying layer solution into an atomizing nozzle to be sprayed on the surface of the base film, and drying for 10-20min at the drying temperature of 30-45 ℃;
3) pumping the high-temperature resistant mixed glue by a pump, sending the high-temperature resistant mixed glue into an atomizing nozzle to spray the mixed glue on the tackifying layer, drying the mixed glue for 10 to 20min at the drying temperature of between 30 and 45 ℃ to obtain a pre-coated film semi-finished product
4) And then carrying out antistatic or corona treatment on the semi-finished product of the pre-coating film to obtain the high-temperature-resistant and water-resistant pre-coating film.
Specifically, in the step 3), the preparation process of the high-temperature-resistant mixed glue comprises the following steps:
a. adding ethylene glycol dimethacrylate, polybutylene terephthalate, an antioxidant, an anti-aging agent and 40% of water into a dispersion machine, dispersing at a high speed of 1200r/min for 20-40min, and keeping the temperature in a stirring cavity at 40-60 ℃ to obtain a component A;
b. adding organic peroxide, octadecyl methacrylate, methacrylic acid, ultraviolet absorbent and the rest water into a dispersion machine, dispersing at high speed for 20-40min at the rotation speed of 1500-;
c. slowly adding the component B in the dispersion process of the component A, and adjusting the rotating speed to 400-800r/min for high-speed dispersion for 2-4h to obtain the high-temperature-resistant mixed glue.
Specifically, the high-temperature-resistant and water-resistant pre-coating film is used for coating a film on the surface of a metal product.
More specifically, the metal product comprises a security door, an LED lamp reflector, a metal barrel, a metal draw-bar box and a metal electrical appliance shell.
Specifically, the preparation process of the adhesion promotion layer comprises the following steps:
1) the viscosity of the water-based PU resin emulsion is adjusted to 300-400CPS, the pH value is adjusted to 6-8, after white stable emulsion is obtained, the white stable emulsion is fully mixed with a tackifier, a plasticizer, a wetting agent, an anti-adhesion agent, an ultraviolet absorbent and an antistatic agent through a high-speed dispersion machine and a high-speed grinding machine, and a tackifying stock solution is obtained;
2) passing the tackifying stock solution through a 300-mesh screen, filtering and pressing into a liquid storage tank of an extraction pump;
3) pumping the tackifying stock solution by using a pumping pump, conveying the tackifying stock solution to an atomizing nozzle, spraying the tackifying stock solution on the surface of the base film by the atomizing nozzle, and keeping the temperature of a spraying space at 30-45 ℃.
More specifically, in the step 3) of the preparation process of the adhesion promoting layer, the spraying procedure is carried out in two steps, the front side of the base film is sprayed firstly, the spraying is waited for 10-20min after the spraying is finished, then the base film is overturned to spray the back side, the spraying is waited for 10-20min after the spraying is finished, and the gluing of the high-temperature resistant mixed glue can be carried out.
Preferably, the base film is a polyamide film.
Preferably, the organic peroxide is one or a mixture of more than two of tert-butyl cumyl peroxide, tert-amyl peroxy-2-ethyl hexyl carbonate, ethyl 3, 3-bis (tert-butylperoxy) butyrate, tert-amyl peroxyacetate and dicumyl peroxide.
Specifically, the antioxidant, the anti-aging agent, the ultraviolet absorber, the defoaming agent and the film forming agent are conventional antioxidants, anti-aging agents, ultraviolet absorbers, defoaming agents and film forming agents in the field.
More preferably, the film former is a glycol ether, glycol ether ester, or ester alcohol film former.
More preferably, the concentration of the poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid is 2-10 mg/ml.
More preferably, the tackifier is an aqueous gum tackifier.
Example 2
The high-temperature-resistant and water-resistant precoating film of the embodiment 1, wherein the high-temperature-resistant mixed glue comprises the following components in percentage by weight: 70% of ethylene glycol dimethacrylate, 10% of polybutylene terephthalate, 5% of organic peroxide, 0.08% of octadecyl methacrylate, 0.7% of methacrylic acid, 0.6% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
Example 3
The high-temperature-resistant and water-resistant precoating film of the embodiment 1, wherein the high-temperature-resistant mixed glue comprises the following components in percentage by weight: 40% of ethylene glycol dimethacrylate, 15% of polybutylene terephthalate, 2% of organic peroxide, 0.1% of octadecyl methacrylate, 0.5% of methacrylic acid, 0.9% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
Example 4
The high-temperature-resistant and water-resistant precoating film of the embodiment 1, wherein the high-temperature-resistant mixed glue comprises the following components in percentage by weight: 80% of ethylene glycol dimethacrylate, 10% of polybutylene terephthalate, 10% of organic peroxide, 0.01% of octadecyl methacrylate, 1% of methacrylic acid, 0.3% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
The invention provides a high-temperature-resistant and water-resistant pre-coating film and a preparation process and application thereof.A high-temperature-resistant mixed adhesive layer is arranged on a base film, and components such as polybutylene terephthalate, ethylene glycol dimethacrylate and octadecyl methacrylate contained in the high-temperature-resistant mixed adhesive layer are matched with additives such as an ultraviolet absorbent and an anti-aging agent, so that the heat resistance and the chemical resistance of the adhesive layer can be effectively improved, and the pre-coating film has excellent high-temperature resistance; and because the adhesion-promoting layer is arranged between the high-temperature resistant mixed glue layer and the base film, the adhesion-promoting layer takes water-based PU resin emulsion as a main body and is matched with components such as poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid, isocyanate curing agent, tackifier and the like, the adhesive property of the adhesion-promoting layer can be enhanced, so that the adhesive capacity of the high-temperature resistant mixed glue layer and the base film is ensured, and the adhesive strength is more than or equal to 5.0N/m; the precoating film prepared by the preparation process can ensure that the precoating film has excellent high temperature resistance and water resistance, the abrasion resistance is improved, the flatness is good after the film is coated, no bubble phenomenon exists, after the product is coated, particularly the film is coated on the surface of a metal product, and after the product is subjected to folding, wind blowing, sun drying and rain showering tests in an outdoor environment, the bubble and demoulding phenomena can not occur within one year,
the common bumping phenomenon can not scratch or break the precoating film; based on excellent peel strength, the peel strength is as high as 9.4N/cm, the precoating film is not easy to peel off after being coated, and the edge of the precoating film does not roll.
Performance test:
the peel strength (T type) was measured according to the method of GB/T14916-006 equivalent to ISO/IEC 7810: 2003;
the high temperature resistance is the time for collecting the coiling phenomenon after the pre-coating film is coated on the steel plate and is continuously heated.
The comparison is as follows:
| peel strength (T type) | High temperature resistance | |
| Example 1 | 9.4N/cm | 105℃ |
| Example 2 | 8.2N/cm | 99℃ |
| Example 3 | 8.5N/cm | 102℃ |
| Example 4 | 7.9N/cm | 98℃ |
| Comparative example | 6.5N/cm | 65℃ |
Claims (9)
1. The utility model provides a high temperature resistant water-fast precoating film which characterized in that: comprises a base film and coating layers formed by coating high-temperature resistant mixed glue on the upper and lower surfaces of the base film; the high-temperature resistant mixed glue comprises the following components in percentage by weight: 40-80% of ethylene glycol dimethacrylate, 10-15% of polybutylene terephthalate, 2-10% of organic peroxide, 0.01-0.1% of octadecyl methacrylate, 0.5-1% of methacrylic acid, 0.3-0.9% of antioxidant, 0.1-0.5% of anti-aging agent, 0.1-0.5% of ultraviolet absorbent, 0.5% of defoaming agent, 1% of film forming agent and the balance of water.
2. The high-temperature-resistant and water-resistant precoating film according to claim 1, characterized in that: the high-temperature resistant mixed glue comprises the following components in percentage by weight: 62 percent of ethylene glycol dimethacrylate, 14 percent of polybutylene terephthalate, 7 percent of organic peroxide, 0.04 percent of octadecyl methacrylate, 0.5 percent of methacrylic acid, 0.5 percent of antioxidant, 0.1 to 0.5 percent of age resister, 0.1 to 0.5 percent of ultraviolet absorbent, 0.5 percent of defoaming agent, 1 percent of film forming agent and the balance of water.
3. The high-temperature-resistant and water-resistant precoating film according to claim 1, characterized in that: the organic peroxide is one or a mixture of more than two of tert-butyl cumyl peroxide, tert-amyl peroxy-2-ethylhexyl carbonate, ethyl 3, 3-bis (tert-butylperoxy) butyrate, tert-amyl peroxyacetate and dicumyl peroxide.
4. The high-temperature-resistant and water-resistant precoating film according to claim 1, characterized in that: and a tackifying layer is arranged between the base film and the coating layer, and the dry coating weight of the tackifying layer is 0.1-2.3g per square meter.
5. The high-temperature-resistant and water-resistant precoating film according to claim 4, characterized in that: the tackifying layer comprises the following components in percentage by weight: 30-60% of water-based PU resin emulsion, 12-23% of poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid, 8-12% of isocyanate curing agent, 1-5% of tackifier, 8-15% of diluent and 0.5% of defoaming agent.
6. The preparation process of the high-temperature-resistant and water-resistant pre-coating film based on claim 1 is characterized by comprising the following steps of:
1) firstly, carrying out double-sided corona treatment on the base film to enable the base film to reach a corona value of more than 46 dyne;
2) feeding the base film into a spraying space of a gluing machine, pumping the tackifying layer solution by using a pumping pump, feeding the tackifying layer solution into an atomizing nozzle to be sprayed on the surface of the base film, and drying for 10-20min at the drying temperature of 30-45 ℃;
3) pumping the high-temperature resistant mixed glue by a pump, sending the high-temperature resistant mixed glue into an atomizing nozzle to spray the mixed glue on the tackifying layer, drying the mixed glue for 10 to 20min at the drying temperature of between 30 and 45 ℃ to obtain a pre-coated film semi-finished product
4) And then carrying out antistatic or corona treatment on the semi-finished product of the pre-coating film to obtain the high-temperature-resistant and water-resistant pre-coating film.
7. The preparation process of the high-temperature-resistant and water-resistant precoating film according to claim 6, wherein in the step 3), the preparation process of the high-temperature-resistant mixed glue comprises the following steps:
a. adding ethylene glycol dimethacrylate, polybutylene terephthalate, an antioxidant, an anti-aging agent and 40% of water into a dispersion machine, dispersing at a high speed of 1200r/min for 20-40min, and keeping the temperature in a stirring cavity at 40-60 ℃ to obtain a component A;
b. adding organic peroxide, octadecyl methacrylate, methacrylic acid, ultraviolet absorbent and the rest water into a dispersion machine, dispersing at high speed for 20-40min at the rotation speed of 1500-;
c. slowly adding the component B in the dispersion process of the component A, and adjusting the rotating speed to 400-800r/min for high-speed dispersion for 2-4h to obtain the high-temperature-resistant mixed glue.
8. The use of the high-temperature-resistant and water-resistant precoating film according to claim 1, characterized in that: the high-temperature-resistant and water-resistant pre-coating film is used for coating a film on the surface of a metal product.
9. The use of the high-temperature-resistant and water-resistant precoating film according to claim 8, wherein the precoating film comprises: the metal product comprises a security door, an LED lamp reflecting cover, a metal barrel, a metal draw-bar box and a metal electrical appliance shell.
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| CN202010963405.0A CN112063319A (en) | 2020-09-14 | 2020-09-14 | High-temperature-resistant and water-resistant pre-coating film and preparation process and application thereof |
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| CN202010963405.0A CN112063319A (en) | 2020-09-14 | 2020-09-14 | High-temperature-resistant and water-resistant pre-coating film and preparation process and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015368A (en) * | 2021-12-02 | 2022-02-08 | 东莞澳中新材料科技股份有限公司 | BOPP (biaxially-oriented polypropylene) base film for adhesive tape and lithium battery protection adhesive tape applying same |
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| CN104710947A (en) * | 2015-01-13 | 2015-06-17 | 北京康得新功能材料有限公司 | Precoating membrane used for metal surface and preparation method thereof |
| CN105038638A (en) * | 2015-07-10 | 2015-11-11 | 浙江欧仁新材料有限公司 | Ultraviolet-resistant hot melt adhesive used for digital inkjet advertising base material and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710947A (en) * | 2015-01-13 | 2015-06-17 | 北京康得新功能材料有限公司 | Precoating membrane used for metal surface and preparation method thereof |
| CN105038638A (en) * | 2015-07-10 | 2015-11-11 | 浙江欧仁新材料有限公司 | Ultraviolet-resistant hot melt adhesive used for digital inkjet advertising base material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114015368A (en) * | 2021-12-02 | 2022-02-08 | 东莞澳中新材料科技股份有限公司 | BOPP (biaxially-oriented polypropylene) base film for adhesive tape and lithium battery protection adhesive tape applying same |
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