CN108300353B - TPU (thermoplastic polyurethane) protective film and preparation method thereof - Google Patents
TPU (thermoplastic polyurethane) protective film and preparation method thereof Download PDFInfo
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- CN108300353B CN108300353B CN201810115881.XA CN201810115881A CN108300353B CN 108300353 B CN108300353 B CN 108300353B CN 201810115881 A CN201810115881 A CN 201810115881A CN 108300353 B CN108300353 B CN 108300353B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
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Abstract
The invention provides a TPU protective film, which comprises: a peeling layer; the using layer is arranged on the surface of the stripping layer; the protective film layer is arranged on the surface of the using layer; the use layer comprises: the adhesive layer is arranged on the surface of the stripping layer; the TPU layer is arranged on the surface of the adhesive layer; the self-repairing functional layer is arranged on the surface of the TPU layer; the hydrophobic and oleophobic function layer is arranged on the surface of the self-repairing function layer; the hydrophobic oil-repellent layer comprises the following components in parts by weight: 100-200 parts of polymethylsiloxane; 1-2 parts of a cross-linking agent; 2-5 parts of a curing agent; 300-1000 parts of ethyl acetate; 500-1500 parts of n-butyl acetate; the protective film layer is arranged on the surface of the hydrophobic and oleophobic function layer. The TPU protective film provided by the invention has good hydrophobic and oleophobic functions and wear resistance under the condition of no warping.
Description
Technical Field
The invention relates to the technical field of protective films, in particular to a TPU protective film and a preparation method thereof.
Background
The TPU has excellent flexibility and good impact resistance, and can effectively prevent the screen from being cracked; meanwhile, the soft TPU material can be effectively attached to the cambered surface without foaming, can be used for a long time, and does not influence the appearance.
The traditional TPU membrane is subjected to hydrophobic and oleophobic treatment, a layer of hydrophobic and oleophobic UV glue is coated on one surface of a base material, but the TPU membrane is too soft in material, the warp is serious after the UV glue is coated, the subsequent procedures are adversely affected, and the wear resistance of the TPU membrane is poor.
Disclosure of Invention
In view of the above, the invention aims to provide a TPU protective film and a preparation method thereof, and the TPU protective film provided by the invention has good hydrophobic and oleophobic effects and good wear resistance, and does not warp.
The invention provides a TPU protective film, the main structure of the TPU protective film provided by the invention is a use layer, and in order to facilitate the transportation and use of the TPU protective film provided by the invention, the TPU protective film provided by the invention preferably further comprises a stripping layer and a protective film layer.
In the present invention, the TPU protective film preferably includes:
a peeling layer;
the using layer is arranged on the surface of the stripping layer;
and the protective film layer is arranged on the surface of the using layer.
In the present invention, the peeling layer is preferably a silicone release film. In the present invention, the thickness of the peeling layer is preferably 20 to 100 μm, and more preferably 30 to 80 μm. In the present invention, the silicone oil release film preferably has a release force of 5 to 20gf, more preferably 10 to 15 gf.
In the present invention, the use layer preferably includes:
the adhesive layer is arranged on the surface of the stripping layer;
the TPU layer is arranged on the surface of the adhesive layer;
the self-repairing functional layer is arranged on the surface of the TPU layer;
and the hydrophobic and oleophobic function layer is arranged on the surface of the self-repairing function layer.
In the invention, the film protecting layer is preferably arranged on the surface of the hydrophobic and oleophobic functional layer.
In the invention, the stripping layer is used for protecting the TPU adhesive layer, preventing the TPU adhesive layer from being damaged, and stripping the stripping film to perfectly attach to the screen, thereby playing a role of taking on and off. In the present invention, the thickness of the adhesive layer is preferably 20 to 100 μm, and more preferably 30 to 80 μm. In the present invention, the adhesive layer is preferably composed of an acrylic resin, more preferably an OCA (special adhesive for cementing a transparent optical element), and the adhesive layer preferably has a peel force of 80 to 200 gf.
In the invention, the TPU layer is a main body material of the protective film, has better toughness and impact resistance, and mainly plays a role in protection. In the invention, the thickness of the TPU (thermoplastic polyurethane elastomer rubber) layer is preferably 100-200 μm, and more preferably 120-180 μm
In the invention, the self-repairing functional layer has the function of self-repairing when an object is damaged, and when the object is scratched, the self-repairing functional material can be released to automatically repair the damaged object surface. In the invention, the thickness of the self-repairing functional layer is preferably 10-50 μm, and more preferably 20-40 μm. In the present invention, the self-healing functional layer preferably contains a PU resin (polyurethane resin).
In the present invention, the hydrophobic and oleophobic functional layer functions to impart a hydrophobic and oleophobic function to the protective film of the present invention. In the present invention, the thickness of the hydrophobic and oleophobic functional layer is preferably < 1 μm, more preferably 0.2 to 0.8 μm, and most preferably 0.4 to 0.6 μm. In the present invention, the ingredients of the hydrophobic and oleophobic functional layer preferably include, in parts by weight:
100-200 parts of polymethylsiloxane;
1-2 parts of a cross-linking agent;
2-5 parts of a curing agent;
300-1000 parts of ethyl acetate;
500-1500 parts of n-butyl acetate.
In the present invention, the polymethylsiloxane is a main component of the hydrophobic oleophobic layer; the weight part of the polymethylsiloxane is preferably 100-200 parts, more preferably 120-180 parts, and most preferably 140-160 parts.
In the present invention, the crosslinking agent functions to crosslink the silane resin system. The type and source of the crosslinking agent are not particularly limited in the present invention, and silane crosslinking agents known to those skilled in the art can be used, for example, commercially available YZ-85A type products. In the invention, the weight part of the cross-linking agent is preferably 1-1.8 parts.
In the present invention, the curing agent is preferably a platinum curing agent. In the invention, the weight part of the curing agent is preferably 2-3 parts. The present invention is not particularly limited in kind and source of the curing agent, and a silica gel curing agent well known to those skilled in the art may be used, for example, a commercially available model YZ-82B may be used.
The cross-linking agent and the curing agent adopted by the invention are products of the models YoZOHO 8260 and 8210 provided by York scientific and technical limited, wherein the cross-linking agent is a product of the model YZ-85A, and the curing agent is a product of the model YZ-82B.
In the invention, the weight part of the ethyl acetate is preferably 400 to 800 parts, and more preferably 500 to 600 parts. In the invention, the weight part of the n-butyl acetate is preferably 600 to 1300 parts, and more preferably 700 to 1000 parts. In the invention, the ethyl acetate and the n-butyl acetate are used as solvents, and the mass ratio of the ethyl acetate to the n-butyl acetate is preferably (1-3) to (3-10), more preferably (1.5-2.5) to (4-8), and most preferably (2 (5-6).
In the invention, the mass ratio of the solvent to the polymethylsiloxane is (8-40) to (1-3), and more preferably (10-35): (1.5-2.5), most preferably (20-25): 2. in the present invention, the solvent may also be toluene, gasoline, butanone, etc., preferably ethyl acetate and n-butyl acetate.
In the present invention, the protective film layer preferably includes an adhesive layer and a substrate layer, and the substrate layer is bonded to the hydrophobic and oleophobic functional layer through the adhesive layer. In the present invention, the adhesive layer is preferably an acrylic adhesive. In the invention, the thickness of the adhesive layer is preferably 3-15 μm, more preferably 5-12 μm, and most preferably 8-10 μm. In the present invention, the material of the base material layer is preferably PET (polyethylene terephthalate), OPP (biaxially oriented polypropylene), or PC (polycarbonate).
In the present invention, the preparation method of the TPU protective film according to the above technical scheme is preferably:
taking the TPU film as a TPU layer;
coating viscose on the lower surface of the TPU film to obtain a viscose layer;
attaching a stripping film to the surface of the adhesive layer to obtain a stripping layer;
coating self-repairing resin on the upper surface of the TPU film to obtain a self-repairing functional layer;
coating a hydrophobic and oleophobic feed liquid on the surface of the self-repairing functional layer to obtain a hydrophobic and oleophobic functional layer;
and attaching a protective film to the surface of the hydrophobic and oleophobic functional layer to form a protective film layer, so as to obtain the TPU protective film.
In the present invention, the TPU film may be a commercially available TPU film having a release film on the upper and lower surfaces thereof; the release film is preferably a PET release film. In the present invention, the TPU film preferably comprises:
a TPU substrate;
a release film disposed on an upper surface of the TPU substrate;
and the release film is arranged on the lower surface of the TPU substrate.
According to the invention, before the surface of the TPU film is coated with the adhesive, the stripping film on the upper surface of the TPU substrate is preferably torn off, a layer of process film is coated on the surface of the TPU film with the stripping film torn off by the adhesive, the substrate of the process film can be any one of PET, PVC, PC, PP and OPP, and the PET is preferably selected. In the present invention, the glue on the process film may be silicone resin, acrylic resin, polyurethane resin, preferably silicone resin. In the present invention, the peeling force between the process film and the steel plate is preferably 1 to 10 gf.
The invention adheres the process film to the upper surface of the TPU substrate. In the invention, the process film is adhered to the upper surface of the TPU substrate to prevent the condition that the TPU and the PET are too stretched to carry out subsequent production, the film tearing force is tightened after the PET and the TPU are peeled off and baked, and the PET is torn off to change the process film, so that the process film and the TPU are not baked to be tightened. In the invention, the coating thickness of the silica gel is preferably 10-50 μm, and more preferably 15-45 μm. In the invention, the process film is a film material which plays a transition role in protecting products in the production process or transportation of the products, and the used material can be any one of PET, PVC, PC, PE, PP and OPP. In the present invention, the thickness of the process film is preferably 20 to 100 μm, and more preferably 40 to 80 μm. In the present invention, the thickness of the process film is required to make the TPU layer have a certain stiffness without curling, and the process film with the thickness is preferably used. In the invention, the peeling force between the processing film and the TPU substrate is preferably 0.1-0.5 times of the peeling force between the TPU substrate and the peeling film on the lower surface of the TPU substrate, so that the processing film is ensured not to be torn when the PET on the lower surface is torn off, and meanwhile, the peeling layer of the semi-finished product obtained by preparation is not torn off when the processing film is torn off.
In the invention, after the process film is adhered to the upper surface of the TPU substrate, the peeling film on the lower surface of the TPU substrate is preferably torn off, and the lower surface of the TPU substrate is coated with the adhesive. In the invention, the process of coating the viscose is preferably slit coating, then the stripping film is coated on the surface of the viscose for photocuring, and the viscose layer is formed on the surface of the stripping layer. In the invention, the lamp used for photocuring is preferably a Phillips lamp, and the photocuring power is preferably 60-80W, and more preferably 65-75W; the distance between the lamp and the stripping film in the photocuring process is preferably 5-20 cm, and more preferably 10-15 cm. In the invention, the energy in the photocuring process is preferably 500-1000 joules, and more preferably 600-900 joules. In the present invention, the components and the coating thickness of the adhesive are the same as those of the adhesive layer in the above technical solution, and are not described herein again. In the present invention, the composition and thickness of the peeling film are the same as those of the peeling layer in the above technical solution, and are not described herein again.
Before the self-repairing resin is coated on the upper surface of the TPU film, the process film on the upper surface of the TPU substrate is preferably torn off, and then the self-repairing resin is coated on the upper surface of the TPU substrate. In the present invention, the method of coating the self-healing resin is preferably any one of a doctor blade, a slit, or a dimple. In the invention, the components and the coating thickness of the self-repairing resin are consistent with those of the self-repairing functional layer in the technical scheme, and are not described again.
In the invention, after the surface of the self-repairing functional layer is coated with the hydrophobic and oleophobic feed liquid, the hydrophobic and oleophobic functional layer is obtained by curing in an oven. In the invention, the components and the coating thickness of the hydrophobic and oleophobic material liquid are consistent with those of the hydrophobic and oleophobic functional layer in the technical scheme, and are not described herein again.
In the present invention, the method for preparing the protective film is preferably:
and coating the glue solution on the surface of the base material to obtain the protective film.
In the invention, the components of the base material and the glue solution are the same as those of the base material layer and the glue layer in the technical scheme; the thickness of the base material and the coating thickness of the glue solution are consistent with the thickness of the base material layer and the glue layer in the technical scheme, and further description is omitted here.
In the present invention, the peeling force between the protective layer and the water-and oil-repellent functional layer is preferably 5 to 15gf, and more preferably 5 to 10 gf.
Compared with the prior art, the TPU layer is provided with the self-repairing functional layer and the hydrophobic and oleophobic functional layer, the main component of the hydrophobic and oleophobic functional layer is silicon oil, the shrinkage of the silicon oil is small, the TPU layer cannot warp when the silicon oil is arranged on the TPU layer, and the TPU layer has a good hydrophobic and oleophobic effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a TPU protective film prepared in example 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.
The raw materials used in the following embodiments of the present invention are all commercially available products, the cross-linking agent used in the following embodiments of the present invention is a product of type YZ-85A provided by the company ltd, and the curing agent is a product of type YZ-82B provided by the company ltd.
Example 1
And (3) tearing off the PET stripping film on the upper surface of the TPU film with the PET stripping films on the upper and lower surfaces, covering a layer of processing film with the thickness of 50 mu m on the upper surface of the exposed TPU substrate, wherein the stripping force between the processing film and the TPU substrate is 0.2 times of that between the TPU substrate and the PET stripping film on the lower surface.
And tearing off the PET stripping film on the lower surface of the TPU film. And coating high-viscosity OCA adhesive with the thickness of 50 microns by adopting a slit coating process, coating a PET silicone oil stripping film with the thickness of 50 microns on the surface of the adhesive layer, and then carrying out photocuring by adopting a Philips lamp, wherein the power of the Philips lamp is 70W in the photocuring process, the distance between the lamp and the stripping film is 10cm, the energy in the photocuring process is 800 joules, and the stripping force between the OCA adhesive layer and the PET stripping film is 3-5 gf.
And then tearing off the processing film adhered to the upper surface of the TPU substrate layer, and then coating a layer of PU resin with the thickness of 20 microns on the upper surface of the TPU substrate layer in a scraper mode to form a self-repairing functional layer.
Coating a hydrophobic and oleophobic feed liquid with the thickness of 0.2 mu m on the surface of the self-repairing functional layer by adopting a micro-concave coating mode, and then drying and curing the hydrophobic and oleophobic feed liquid by using an oven at 120 ℃ to form a hydrophobic and oleophobic functional layer; the hydrophobic and oleophobic feed liquid comprises, by weight, 100 parts of polymethylsiloxane, 1.5 parts of a cross-linking agent, 2 parts of a curing agent, 300 parts of ethyl acetate and 700 parts of n-butyl acetate.
Coating acrylic glue with the thickness of 15 mu m on the surface of a 75 mu m PET substrate, attaching the PET substrate to the hydrophobic and oleophobic functional layer through the acrylic glue to obtain a TPU protective film, wherein the stripping force between the PET substrate and the hydrophobic and oleophobic functional layer is 7-8 gf.
The structure of the TPU protective film prepared in example 1 of the present invention is shown in fig. 1, and includes: the silicone oil type film is arranged on the high-viscosity adhesive layer on the surface of the silicone oil release film; the TPU base material is arranged on the surface of the high-viscosity adhesive layer; the self-repairing functional layer is arranged on the surface of the TPU substrate; the hydrophobic and oleophobic function layer is arranged on the surface of the self-repairing function layer; the low-viscosity acrylic is arranged on the surface of the hydrophobic and oleophobic functional layer; the PET substrate is arranged on the surface of the low-adhesion acrylic layer.
Example 2
And (3) tearing off the PET stripping film on the upper surface of the TPU film with the PET stripping films on the upper and lower surfaces, covering a layer of processing film with the thickness of 80 mu m on the upper surface of the exposed TPU substrate, wherein the stripping force between the processing film and the TPU substrate is 0.3 times that between the TPU substrate and the PET stripping film on the lower surface.
And tearing off the PET stripping film on the lower surface of the TPU film. And coating high-viscosity OCA glue with the thickness of 60 microns by adopting a slit coating process, coating a PET silicone oil stripping film with the thickness of 36 microns on the surface of the glue layer, and then carrying out photocuring by adopting a Philips lamp, wherein the power of the Philips lamp is 70W in the photocuring process, the distance between the lamp and the stripping film is 10cm, the energy in the photocuring process is 800 joules, and the stripping force between the OCA glue layer and the PET stripping film is 3-5 gf.
And then tearing off the processing film adhered to the upper surface of the TPU substrate layer, and then coating a layer of PU resin with the thickness of 10 mu m on the upper surface of the TPU substrate layer by adopting a scraper mode to form a self-repairing functional layer.
Coating a hydrophobic and oleophobic feed liquid with the thickness of 0.2 mu m on the surface of the self-repairing functional layer by adopting a micro-concave coating mode, and then drying and curing the hydrophobic and oleophobic feed liquid by using an oven at 120 ℃ to form a hydrophobic and oleophobic functional layer; the hydrophobic and oleophobic feed liquid comprises, by weight, 100 parts of polymethylsiloxane, 1.5 parts of a cross-linking agent, 2 parts of a curing agent, 300 parts of ethyl acetate and 500 parts of n-butyl acetate.
Coating acrylic glue with the thickness of 15 mu m on the surface of a 75 mu m PET substrate, attaching the PET substrate to the hydrophobic and oleophobic functional layer through the acrylic glue to obtain a TPU protective film, wherein the stripping force between the PET substrate and the hydrophobic and oleophobic functional layer is 7-8 gf.
Example 3
And (3) tearing off the PET stripping film on the upper surface of the TPU film with the PET stripping films on the upper and lower surfaces, covering a layer of processing film with the thickness of 50 mu m on the upper surface of the exposed TPU substrate, wherein the stripping force between the processing film and the TPU substrate is 0.5 times that between the TPU substrate and the PET stripping film on the lower surface.
And tearing off the PET stripping film on the lower surface of the TPU film. And coating high-viscosity OCA adhesive with the thickness of 50 microns by adopting a slit coating process, coating a PET silicone oil stripping film with the thickness of 50 microns on the surface of the adhesive layer, and then carrying out photocuring by adopting a Philips lamp, wherein the power of the Philips lamp is 70W in the photocuring process, the distance between the lamp and the stripping film is 10cm, the energy in the photocuring process is 800 joules, and the stripping force between the OCA adhesive layer and the PET stripping film is 3-5 gf. And then tearing off the processing film adhered to the upper surface of the TPU substrate layer, and then coating a layer of PU resin with the thickness of 50 microns on the upper surface of the TPU substrate layer in a scraper mode to form a self-repairing functional layer.
Coating a hydrophobic and oleophobic feed liquid with the thickness of 0.2 mu m on the surface of the self-repairing functional layer by adopting a micro-concave coating mode, and then drying and curing the hydrophobic and oleophobic feed liquid by using an oven at 120 ℃ to form a hydrophobic and oleophobic functional layer; the hydrophobic and oleophobic feed liquid comprises, by weight, 100 parts of polymethylsiloxane, 1.5 parts of a cross-linking agent, 2 parts of a curing agent, 600 parts of ethyl acetate and 600 parts of n-butyl acetate.
Coating acrylic glue with the thickness of 15 mu m on the surface of a 75 mu m PET substrate, attaching the PET substrate to the hydrophobic and oleophobic functional layer through the acrylic glue to obtain a TPU protective film, wherein the stripping force between the PET substrate and the hydrophobic and oleophobic functional layer is 7-8 gf.
The performance test, the test method and the test result of the TPU protective film prepared in the embodiment of the present invention are shown in table 1, and table 1 is the performance test result of the TPU protective film prepared in the embodiment of the present invention.
Table 1 performance test results of TPU protective films prepared in examples of the present invention
From the above embodiments, the present invention provides a TPU protective film, including: a peeling layer; the using layer is arranged on the surface of the stripping layer; the protective film layer is arranged on the surface of the using layer; the use layer comprises: the adhesive layer is arranged on the surface of the stripping layer; the TPU layer is arranged on the surface of the adhesive layer; the self-repairing functional layer is arranged on the surface of the TPU layer; the hydrophobic and oleophobic function layer is arranged on the surface of the self-repairing function layer; the hydrophobic oil-repellent layer comprises the following components in parts by weight: 100-200 parts of polymethylsiloxane; 1-2 parts of a cross-linking agent; 2-5 parts of a curing agent; 300-1000 parts of ethyl acetate; 500-1500 parts of n-butyl acetate; the protective film layer is arranged on the surface of the hydrophobic and oleophobic function layer. The TPU protective film provided by the invention has good hydrophobic and oleophobic functions and wear resistance under the condition of no warping.
Claims (1)
1. A TPU protective film comprising a use layer;
the use layer comprises:
an adhesive layer;
the TPU layer is arranged on the surface of the adhesive layer;
the self-repairing functional layer is arranged on the surface of the TPU layer;
the hydrophobic and oleophobic function layer is arranged on the surface of the self-repairing function layer;
the hydrophobic oil-repellent layer comprises the following components in parts by weight:
100-200 parts of polymethylsiloxane;
1-2 parts of a cross-linking agent;
2-5 parts of a curing agent;
300-1000 parts of ethyl acetate;
500-1500 parts of n-butyl acetate;
the TPU protective film further comprises a stripping layer; the stripping layer is a silicone oil release film; the thickness of the stripping layer is 20-100 mu m;
the adhesive layer is made of acrylic resin; the thickness of the adhesive layer is 20-100 mu m;
the thickness of the TPU layer is 100-200 mu m;
the self-repairing functional layer is made of PU resin; the thickness of the self-repairing functional layer is 10-50 mu m;
the thickness of the hydrophobic oil-repellent layer is less than 1 mu m;
the TPU protective film also comprises a protective film layer; the film-protecting layer comprises: the base material layer is bonded with the hydrophobic and oleophobic functional layer through the adhesive layer;
the adhesive layer is composed of acrylic adhesive;
the material of substrate layer is PET, OPP or PC.
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| CN111732889A (en) * | 2019-03-25 | 2020-10-02 | 天津大学青岛海洋技术研究院 | Preparation method of organic silicon hydrophobic coating |
| TWI806267B (en) | 2020-12-07 | 2023-06-21 | 美商聖高拜塑膠製品公司 | Composite film and methods of forming a composite film |
| CN113201158B (en) * | 2021-04-29 | 2022-12-13 | 江西昊泽光学膜科技有限公司 | TPU (thermoplastic polyurethane) protective film and preparation method thereof |
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| CN205395363U (en) * | 2016-03-04 | 2016-07-27 | 广州易航电子有限公司 | Oily hydrophobic explosion -proof protection film is dredged to high rigidity |
| CN106432666A (en) * | 2016-10-26 | 2017-02-22 | 江苏怡丽科姆新材料股份有限公司 | Self-repairing film |
| CN106626568A (en) * | 2016-12-27 | 2017-05-10 | 广州易航电子有限公司 | Protection film capable of being attached to cambered-surface edge and preparation method of protection film |
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| CN108300353A (en) | 2018-07-20 |
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