CN116179095A - Acrylic film with multilayer structure and preparation method thereof - Google Patents

Acrylic film with multilayer structure and preparation method thereof Download PDF

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Publication number
CN116179095A
CN116179095A CN202310003800.8A CN202310003800A CN116179095A CN 116179095 A CN116179095 A CN 116179095A CN 202310003800 A CN202310003800 A CN 202310003800A CN 116179095 A CN116179095 A CN 116179095A
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Prior art keywords
acrylic
film
adhesive layer
sensitive adhesive
release film
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CN202310003800.8A
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Chinese (zh)
Inventor
王少明
王杰
彭涛
钱晓亮
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Zhejiang Zhongweishihe New Material Co ltd
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Zhejiang Zhongweishihe New Material Co ltd
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Priority to CN202310003800.8A priority Critical patent/CN116179095A/en
Publication of CN116179095A publication Critical patent/CN116179095A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22Plastics; Metallised plastics
    • C09J7/25Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10Esters
    • C08F220/12Esters of monohydric alcohols or phenols
    • C08F220/14Methyl esters, e.g. methyl (meth)acrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D143/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
    • C09D143/04Homopolymers or copolymers of monomers containing silicon
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04Homopolymers or copolymers of esters
    • C09J133/06Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/10Homopolymers or copolymers of methacrylic acid esters
    • C09J133/12Homopolymers or copolymers of methyl methacrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38Pressure-sensitive adhesives [PSA]
    • C09J7/381Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385Acrylic polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/20Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/208Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/30Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00Presence of polyurethane
    • C09J2475/006Presence of polyurethane in the substrate
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an acrylic film with a multilayer structure, which belongs to the field of functional films and comprises the following components: matte release film; a first adhesive layer applied to the release film; a second adhesive layer applied over the first adhesive layer, comprising a color paste, such that the second adhesive layer has a set color; a thermoplastic polyurethane elastomer substrate applied over the second adhesive layer; a silicone-modified acrylic resin layer applied to the substrate; a protective film located on the outer surface of the organosilicon modified acrylic resin layer; the invention also discloses a preparation method of the multilayer structure acrylic film.

Description

Acrylic film with multilayer structure and preparation method thereof
Technical Field
The present invention relates to the field of multilayer structured acrylic films.
Background
The existing PVC color-changing film is widely used in the automobile industry, but due to the characteristics of PVC materials, an internal additive of the material is easy to separate out, the product performance is affected, the weather resistance is poor, and a plurality of after-market problems can exist when the PVC color-changing film is used at a client. The existing color formation in the color changing film is realized by adding pigments with different colors on the acrylic pressure sensitive adhesive, so that the color changing film has a set color. However, the addition of pigments to acrylic pressure sensitive adhesives changes the cohesion of the acrylic pressure sensitive adhesive, making the pressure sensitive adhesive susceptible to release. Meanwhile, the pigment of the existing color-changing film is sometimes directly added on the thermoplastic polyurethane elastomer, and the color is not bright due to melting with the master batch.
Disclosure of Invention
In order to solve the problems in the prior art, the present invention discloses a multilayer structured acrylic film comprising:
a release film;
a first adhesive layer applied to the release film;
a second adhesive layer applied over the first adhesive layer, comprising a color paste, such that the second adhesive layer has a set color;
a thermoplastic polyurethane elastomer substrate applied over the second adhesive layer;
a silicone-modified acrylic resin layer applied to the substrate;
and the protective film is positioned on the outer surface of the organosilicon modified acrylic resin layer.
In a preferred embodiment, the color paste is a nanoscale color paste.
In a preferred embodiment, the first adhesive layer is an acrylic pressure sensitive adhesive.
The invention also discloses a preparation method of the multilayer structure acrylic film, which comprises the following steps:
coating a first acrylic pressure-sensitive adhesive on the first release film to form a first adhesive layer on the first release film; preparing a second acrylic pressure-sensitive adhesive, and coating the second acrylic pressure-sensitive adhesive on a second release film to form a second bonding layer on the second release film, wherein the second acrylic pressure-sensitive adhesive contains color paste with set color, so that the finally prepared multilayer structure acrylic film has set color; attaching the pretreated thermoplastic polyurethane elastomer substrate to the second adhesive layer; removing the second release film, and attaching and fixing the second adhesive layer and the first adhesive layer; coating a silicone modified acrylic resin solution on a thermoplastic polyurethane elastomer substrate to form a silicone modified acrylic resin layer on the thermoplastic polyurethane elastomer substrate; and (3) attaching a protective film on the organosilicon modified acrylic resin layer and curing.
In a preferred embodiment, the second acrylic pressure-sensitive adhesive is prepared as follows: and blending the nanoscale color paste to set color, performing dispersion treatment, and then mixing the color paste with the acrylic pressure-sensitive adhesive to prepare the second acrylic pressure-sensitive adhesive.
In a preferred embodiment, the first release film is coated with a first acrylic pressure-sensitive adhesive and then cured at a high temperature of 80-120 ° to form the first adhesive layer, and the second release film is coated with a second acrylic pressure-sensitive adhesive and then cured at a high temperature of 80-120 ° to form the second adhesive layer.
In a preferred embodiment, the pretreatment of the thermoplastic polyurethane elastomer substrate comprises corona-treating the thermoplastic polyurethane elastomer substrate.
In a preferred embodiment, the laminating temperature of the protective film on the silicone-modified acrylic resin layer is 50℃and the pressure is 0.5MP.
In a preferred embodiment, the curing is: the curing chamber was left to cure at a temperature of 50℃for 72 hours.
The scheme disclosed by the invention adopts a multilayer structure, the color of the acrylic acid functional film of the multilayer structure is bright, the auxiliary agent is not easy to separate out, and the weather resistance is good because the color layer is arranged at the middle position, so that the acrylic acid functional film cannot be greatly changed for five years.
The invention can adopt the prior acrylic pressure-sensitive adhesive in the preferable scheme, adopts the modified acrylic pressure-sensitive adhesive, and the preparation method of the acrylic pressure-sensitive adhesive comprises the following steps: 10 parts of butyl acrylate, 1 part of acetyl peroxide, 15 parts of methyl methacrylate, 10 parts of isooctyl acrylate and 50 parts of ethyl acetate are mixed and stirred, and the temperature is controlled to be 65 ℃ and the mixture is kept stirred for 0.5-2 hours in a reaction kettle. 5 parts of butyl acrylate, 0.5 part of acetyl peroxide, 7.5 parts of methyl methacrylate, 5 parts of isooctyl acrylate and 25 parts of ethyl acetate are mixed, evenly added into a reaction kettle for 2 hours, then reacted for 2-5 hours, and cooled to obtain the modified acrylic pressure-sensitive adhesive.
The added organosilicon modified acrylic resin solution is incompatible with the protective film in the lamination process, and is favorable for stripping in the final process. The acrylic pressure-sensitive adhesive can be fully mixed with color paste, and the two layers of acrylic pressure-sensitive adhesives can be well attached, so that the adhesive has high bonding strength and is not easy to fall off.
Drawings
FIG. 1 is a schematic structural view of the product of the present invention
The marks in the figure: the adhesive comprises a 1-matte release film, a 2-first adhesive layer, a 3-second adhesive layer, a 4-thermoplastic polyurethane elastomer substrate, a 5-organosilicon modified acrylic resin layer and a 6-PET protective film.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1:
1. the preparation method comprises the following steps:
the required nanoscale color paste is blended with the required color, then the dispersion treatment is carried out, the blended required color paste is fused through different color pastes, the color paste particles can be reduced, the blended nanoscale color paste is added into the acrylic pressure-sensitive adhesive, stirring is carried out for 30-40 minutes, and the use is provided after the detection is qualified.
The matte release film is used for coating the colored acrylic pressure-sensitive adhesive (color layer), a 28 m oven is used for curing at the temperature of 80-120 ℃, a second bonding layer 3 is formed on the matte release film, a thermoplastic polyurethane elastomer substrate 4 is bonded on the second bonding layer 3, corona treatment is carried out on the thermoplastic polyurethane elastomer substrate before bonding, the adhesive force of the acrylic pressure-sensitive adhesive is increased, and the product prepared through the step is a first semi-finished product.
And coating acrylic pressure-sensitive adhesive (clear adhesive) by using another matte release film, curing at a high temperature of 80-120 ℃ by using a 28 m oven, and forming a first adhesive layer 2 on the matte release film to form a second semi-finished product.
And removing the matte release film on the first semi-finished product, and adhering and bonding the second adhesive layer 3 and the first adhesive layer 3 to form a third semi-finished product.
Coating a silicone-modified acrylic resin solution on the thermoplastic polyurethane elastomer substrate of the third semi-finished product to form a silicone-modified acrylic resin layer 5 on the thermoplastic polyurethane elastomer substrate; then, a high-definition PET protective film 6 is attached under the conditions of 50 ℃ and 0.5MP of pressure; and (3) placing the prepared functional film in a curing chamber, curing for 72 hours at 50 ℃ to prepare the multilayer structure acrylic functional film, and obtaining a sample.
In a preferred embodiment, the preparation of the silicone-modified acrylic resin: 5 parts of vinyltrimethoxysilane, 5 parts of vinyltriethoxysilane, 5 parts of propenyl trimethoxysilane, 5 parts of methacryloxypropyl trimethoxysilane, 5 parts of water, 2 parts of dibenzoyl peroxide, 0.5 part of chloroplatinic acid and 30 parts of methyl methacrylate are stirred and mixed to form a first mixture; dissolving 0.2 part of dibenzoyl peroxide in 5 parts of propylene glycol butyl ether to form a second mixture; adding 40 parts of propylene glycol butyl ether into a reaction kettle, heating to 75-95 ℃, slowly adding half of the first composition into the reaction kettle (adding the mixture in 1 hour), stirring and reacting for half an hour, adding the rest of the first composition (after 2 hours of dripping, mixing the rest of the first mixture with the second mixture), and reacting for 5 hours after dripping, thus obtaining the organosilicon modified propylene resin. The organosilicon modified propylene resin has low drying temperature, can realize slow drying at 50-75 ℃, increases the adhesion force with the PET protective film, and has high bonding strength.
As shown in fig. 1, the acrylic functional film with a multilayer structure prepared in this example comprises a matte release film 1, a first adhesive layer 2, a second adhesive layer 3, a thermoplastic polyurethane elastomer substrate 4, an organosilicon modified acrylic resin layer 5, and a PET protective film 6. The first adhesive layer 2 is applied on the matte release film 1, the second adhesive layer 3 is applied on the first adhesive layer 2, the thermoplastic polyurethane elastomer substrate 4 is applied on the second adhesive layer 3, the silicone modified acrylic resin layer 5 is applied on the thermoplastic polyurethane elastomer substrate 4, and the PET protective film 6 is positioned on the silicone modified acrylic resin layer 5. The first adhesive layer 2 is formed by acrylic pressure-sensitive adhesive, the second adhesive layer 3 is formed by acrylic pressure-sensitive adhesive containing color paste, and the PET protective film is a conventional protective film.
2. Performance testing
1. Method for testing initial adhesion of glue
Three 25 mm/300 mm multilayer acrylic functional film product bars prepared in example 1 were prepared, the PET protective film and the base paper were removed, the test pieces were attached to a mirror surface steel plate of 5 x 15cm, and the test pieces were back-rolled 3 times with a 2kg roller, and left at standard room temperature for 20 minutes. The test sample is put into a clamp device of an electronic tensile testing machine for test stripping, and the load is uniformly distributed on the width of the product. Starting the testing machine, stretching at the speed of 300mm/min, observing the material condition in the running process, and recording data after the material condition is completed.
2. Haze test method
And 3 samples of the multilayer structure acrylic functional film product with the size of 100mm are cut, the samples are placed for AT least 24 hours under the environment condition that the temperature is 23+/-2 ℃ and the relative humidity is not more than 60% before the test, and the samples are detected by an AT-4727 haze tester.
3. Self-repairing test method
After brushing brush marks on the surface of the film by using a straight wire steel wire brush, observing whether the brush marks can automatically disappear in 1 hour or disappear under the condition of a heat source (such as hot water pouring). If it can disappear, the material is considered to have a self-healing function.
4. Gloss evaluation method
The flexible polymer substrate coated with the self-repairing coating was adhered to a black metal plate, and the gloss of the surface of the material was observed from the front and side (60 degrees), respectively. And if the surface is smooth and reflective, the reflection is clear and sharp, the gloss is considered to be good, otherwise, the gloss is considered to be poor.
5. Stain resistance evaluation method:
marking the surface of the coating by using a morning light double-jetty Water marker pen, standing for 1 day after the mark is dried, directly wiping by using a dust-free cloth or wiping by dipping the dust-free cloth into anhydrous alcohol, and observing the cleaning condition of the mark. Stain resistance is considered to be excellent if the mark can be wiped off completely and no mark remains. If the mark is not erasable, the stain resistance is considered poor. Stain resistance is considered good if the mark can be rubbed off but with a small trace.
6. Elongation at break test method
Cutting a sample into a specification width of 1cm, an effective test length of 4cm, a stretching speed of 300mm/min, a breaking elongation = (length at break-original length)/original length of 100%,
7. Tensile strength test method:
the material to be tested was cut to a specification width of 1cm, an effective test length of 4cm, a tensile speed of 300mm/min, a tensile strength=maximum tension/cross section.
8. Weather resistance testing method.
The materials to be tested (samples 1-2 and comparative material prepared in example 1) were cut into materials with a width of 4cm and a length of 4cm, and the materials were tested in a weathering test box, irradiated with a xenon lamp at a power of 1.8kw and an irradiance of 736W/square meter in a wavelength range of 400-1000nm, and the precipitation period was adjusted to 60-100 minutes. Irradiation was performed for 8 hours and stopped for 16 hours. 7 sets of data were recorded every week the color of the material was tested.
3. Results
1. The prepared multilayer structure acrylic acid functional film has bright surface color, good saturation and the saturation value is as follows: (unit:%)
Sequence number For 1 week For 2 weeks 3 weeks 4 weeks of For 5 weeks For 6 weeks 7 weeks
Contrast material 42% 40% 38% 37% 35% 35% 34%
Sample 1 52% 52% 52% 50% 49% 47% 45
Sample
2 52% 52% 52% 49% 49% 46% 43%
2. The scratch resistance of the sample 1 and the sample 2 is good, and no scratch exists when the No. 0 steel wire is loaded with 2kg and rubbed back and forth for more than 1000 times; the sample protection film has excellent self-repairing performance, elongation at break up to 180%, excellent gloss and good stain resistance; the corrosion resistance is good, the sampling film is posted on a black small machine cover, the marking oil agent is dripped into the sampling film for 120s to swell and not to be dumb, and cracks or local corrosion are not observed on the surface texture of the coating.

Claims (9)

1. A multilayer structured acrylic film, characterized by comprising:
matte release film;
a first adhesive layer applied to the release film;
a second adhesive layer applied over the first adhesive layer, comprising a color paste, such that the second adhesive layer has a set color;
a thermoplastic polyurethane elastomer substrate applied over the second adhesive layer;
a silicone-modified acrylic resin layer applied to the substrate;
and the protective film is positioned on the outer surface of the organosilicon modified acrylic resin layer.
2. The acrylic film of claim 1, wherein the color paste is a nanoscale color paste.
3. The acrylic film of claim 1, wherein the first adhesive layer is an acrylic pressure sensitive adhesive.
4. A method for preparing an acrylic film with a multilayer structure, which is characterized by comprising the following steps:
1) Coating a first acrylic pressure-sensitive adhesive on the first release film to form a first adhesive layer on the first release film;
2) Preparing a second acrylic pressure-sensitive adhesive, and coating the second acrylic pressure-sensitive adhesive on a second release film to form a second bonding layer on the second release film, wherein the second acrylic pressure-sensitive adhesive contains color paste with set color, so that the finally prepared multilayer structure acrylic film has set color;
3) Attaching the pretreated thermoplastic polyurethane elastomer substrate to the second adhesive layer;
4) Removing the second release film, and attaching and fixing the second adhesive layer and the first adhesive layer;
5) Coating a silicone modified acrylic resin solution on a thermoplastic polyurethane elastomer substrate to form a silicone modified acrylic resin layer on the thermoplastic polyurethane elastomer substrate;
6) And (3) attaching a protective film on the organosilicon modified acrylic resin layer and curing.
5. The method for producing a multilayered acrylic film according to claim 4, wherein the method for producing the second acrylic pressure-sensitive adhesive comprises the steps of: and blending the nanoscale color paste to set color, performing dispersion treatment, and then mixing the color paste with the acrylic pressure-sensitive adhesive to prepare the second acrylic pressure-sensitive adhesive.
6. The method of claim 5, wherein the first release film is coated with a first acrylic pressure-sensitive adhesive and then cured at a high temperature of 80-120 ° to form the first adhesive layer, and the second release film is coated with a second acrylic pressure-sensitive adhesive and then cured at a high temperature of 80-120 ° to form the second adhesive layer.
7. The method of producing a multilayer structure acrylic film according to claim 6, wherein the pretreatment of the thermoplastic polyurethane elastomer substrate comprises corona-beating the thermoplastic polyurethane elastomer substrate.
8. The method for producing a multilayered acrylic film according to claim 7, wherein the bonding temperature of the protective film on the silicone-modified acrylic resin layer is 50 ℃ and the pressure is 0.5MP.
9. The method for producing a multilayered acrylic film according to claim 8, wherein the aging is: the curing chamber was left to cure at a temperature of 50℃for 72 hours.
CN202310003800.8A 2023-01-03 2023-01-03 Acrylic film with multilayer structure and preparation method thereof Pending CN116179095A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106589215A (en) * 2016-12-27 2017-04-26 万华化学集团股份有限公司 Organosilicon modified polymethyl methacrylate and preparation method thereof
CN109868073A (en) * 2018-12-11 2019-06-11 浙江世窗光学薄膜制造有限公司 A kind of film and preparation method thereof that changes colour with self-repair function
CN110885397A (en) * 2019-12-04 2020-03-17 东胜化学(上海)有限公司 Organic silicon modified acrylic resin and preparation method thereof
CN111363488A (en) * 2020-04-23 2020-07-03 广东邦固薄膜涂料创新研究院有限公司 3D curved screen self-repairing TPU protective film and preparation method thereof
CN214522498U (en) * 2020-12-04 2021-10-29 江西昊泽光学膜科技有限公司 Prevent scraping wear-resisting sclerosis TPU screen protection film
CN216273888U (en) * 2021-03-19 2022-04-12 广东鑫瑞新材料科技有限公司 Color-changed paint surface protective film

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106589215A (en) * 2016-12-27 2017-04-26 万华化学集团股份有限公司 Organosilicon modified polymethyl methacrylate and preparation method thereof
CN109868073A (en) * 2018-12-11 2019-06-11 浙江世窗光学薄膜制造有限公司 A kind of film and preparation method thereof that changes colour with self-repair function
CN110885397A (en) * 2019-12-04 2020-03-17 东胜化学(上海)有限公司 Organic silicon modified acrylic resin and preparation method thereof
CN111363488A (en) * 2020-04-23 2020-07-03 广东邦固薄膜涂料创新研究院有限公司 3D curved screen self-repairing TPU protective film and preparation method thereof
CN214522498U (en) * 2020-12-04 2021-10-29 江西昊泽光学膜科技有限公司 Prevent scraping wear-resisting sclerosis TPU screen protection film
CN216273888U (en) * 2021-03-19 2022-04-12 广东鑫瑞新材料科技有限公司 Color-changed paint surface protective film

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