CN105331277A - Protective film of multilayer structure and preparation method and application thereof - Google Patents
Protective film of multilayer structure and preparation method and application thereof Download PDFInfo
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- CN105331277A CN105331277A CN201510765612.4A CN201510765612A CN105331277A CN 105331277 A CN105331277 A CN 105331277A CN 201510765612 A CN201510765612 A CN 201510765612A CN 105331277 A CN105331277 A CN 105331277A
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- acrylate
- protective membrane
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Abstract
The invention provides a protective film of a multilayer structure and a preparation method and application thereof. The protective film comprises an optical film, a hardening layer, a buffer layer and a silica gel coating in sequence from bottom to top, wherein the optical film is a PET base film, the hardening layer is a UV photocureable coating, and the buffer layer is a UV photocureable coating layer. Compared with the prior art, the protective film has the advantages that the surface hardness is high; the UV hardening layer at the upper end of the novel protective film is high in hardness, excellent in anti-scratch performance and capable of protecting a display screen better; the anti-shock performance is good, due to the fact that the buffer layer is arranged below the optical film, when the novel protective film is subjected to heavy impact or collision, the buffer effect is more obvious, the display screen is not easy to crush, fragments do not appear at edges and corners after the protective film is used for a long time, and harm to the human body is reduced.
Description
Technical field
The present invention relates to a kind of multilayered structure protective membrane and its preparation method and application, belong to technology field of membrane materials.
Background technology
Due to the progress of science and technology, electronics now can have display screen usually, be used for showing its state etc. operated, person's operation easy to use; The current main flow of these electronic equipment screens is then LCD screen; its advantage is nothing more than being slim, light and having emulative price etc.; but LCD screen has a shortcoming to be namely its surface not scratch resistance and easily damages because of clashing into; so; usually protective membrane can be utilized to be attached in screen surface, and then to improve scratch resistance and the shock resistance of screen.
Screen protecting film has been widely used on the electronic products such as mobile phone, camera or portable multimedia player.Existing screen protecting film main flow mainly contains two kinds, a kind of is the single layer structure made by Plastic material, there is light transmission and flexibility, and all have one in the bottom surface of screen protecting film and stick together film, the film that sticks together of each screen protecting film is fitted a release film, when needs use screen protecting film, first release film is torn off screen protecting film, and then be attached on screen with the film that sticks together of screen protecting film, reach the object of protection screen like this, and when screen protecting film sustains damage, now then need again to stick new screen protecting film, therefore the trouble causing user to replace with, and produce many discarded release films, in addition, because this protective membrane is the single layer structure that plastics are made, its thinner thickness, snappiness is better, degree of deformation is high, and glass screen degree of deformation is low, when being thumped or encounter sharp objects, destructive force can be passed to glass screen by protective membrane, makes the easier fragmentation of the screen of display screen and protective membrane is intact.Another kind of screen protecting film is toughened glass pad pasting, and generally form by 4 layers, the first layer is specific coatings, and the second layer is toughened glass, and third layer is explosion-proof pad pasting, and the 4th layer is silica-gel coating.Toughened glass film, compares general plastic film, can play better anti-scratch effect, due to the hardness that it is high-strength, even if mobile phone is dropped, also can play shock absorption to a certain extent, prevents mobile phone display screen broken.But its shortcoming is that fragility is high, after using for some time, corner just there will be fragment, easily scratches skin all the better, causes human injury; And tempering film in use for some time, usually have alice phenomenon and occur; In addition, glass protection film easily breaks and causes its yield rate low making, when fit with screen, use cost costliness.
The laminated coating protective membrane that the present invention relates to, on PET blooming, be coated with one deck UV stiffening layer, its hardness is high, and adhesion strength is excellent; Below PET blooming, coat buffer layer, when being thumped or encounter sharp objects, the buffer layer on protective membrane can alleviate the destructive force be subject to, and the destructive force that the screen of display screen is subject to is less; Meanwhile, relatively traditional protective membrane, its duration of service is longer, and decreasing existing screen protecting film needs repeatedly to change and produce multiple discarded release film, environmental protection more, efficient.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of multilayered structure protective membrane and its preparation method and application.
The present invention is achieved by the following technical solutions:
First aspect, the invention provides a kind of multilayered structure protective membrane, it comprises blooming, described blooming
Upper surface and lower surface are respectively arranged with stiffening layer and buffer layer, and the surface of described buffer layer is provided with silica-gel coating,
Wherein, described blooming is PET basement membrane, and described stiffening layer is UV photo-cured coating layer; Described buffer layer
For UV photo-cured coating layer, the Thickness Ratio 1:2 of described stiffening layer and buffer layer.
Aforesaid multilayered structure protective membrane, also comprises release film, and described release film is arranged at the lower surface of silica-gel coating.
Second aspect, present invention also offers a kind of preparation method of multilayered structure protective membrane as the aforementioned, it comprises the steps:
The ultraviolet cured paint composition being used for stiffening layer is coated on blooming upper surface, after UV photocuring, makes stiffening layer;
The ultraviolet cured paint composition being used for buffer layer is coated on blooming lower surface, after UV photocuring, makes buffer layer;
At the another side coating silica gel of buffer layer, form bonding glue-line;
Bonding glue-line is fitted barrier film.
Preferably, the described UV-cured resin for stiffening layer comprises the following component of percentage:
Preferably, described acrylate resin is one or more in the aliphatic urethane acrylate resin of low functionality, aliphatic polyester acrylate resin, aliphatic polyurethane methacrylate resin, aliphatic polyester methacrylate resin; Described monomer is one or more in Viscoat 295, trimethylolpropane trimethacrylate, ethoxyquin Viscoat 295, the third oxidation Viscoat 295, pentaerythritol triacrylate, tetramethylol methane tetraacrylate, ethoxyquin tetramethylol methane tetraacrylate, the third oxidation tetramethylol methane tetraacrylate, dipentaerythritol acrylate; Described light trigger is one or more in benzophenone, 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1 acetone, 2,4,6-trimethylbenzoy-dipheny phosphine oxides, isopropyl thioxanthone; Described solvent is one or more in vinyl acetic monomer, N-BUTYL ACETATE, Virahol, propyl carbinol, ethanol, propylene glycol monomethyl ether, ethylene glycol ethyl ether, 1-Methoxy-2-propyl acetate.Described flow agent is one or more in organic silicon modified by polyether, polyester resin change properties of organic silicon, polydimethylsiloxane, fluorin modified crylic acid ester, acrylate copolymer.
Preferably, the described UV-cured resin for buffer layer comprises the following component of percentage:
Wherein, described elastic optical cured resin is three official's esters of acrylic acid unsaturated polymers that Soft hard segment structure has concurrently.
Preferably, described three official's esters of acrylic acid unsaturated polymers utilize Michael reaction, and take room temperature one kettle way prepare and obtain, described preparation method comprises the steps:
At room temperature, take ethyl acetate as solvent, 2-phenoxyethyl acrylate and 1,6-hexanediamine reacts, after question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, in reaction system, add Viscoat 295 react; After question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, precipitate with normal hexane, then obtain three official's esters of acrylic acid light-cured resins of 100% solid content through vacuum-drying.
Preferably, described photo polymerization monomer is the mixture of monofunctional acrylate and two official's acrylate monomer, and wherein, the weight ratio of two official's acrylate monomer and monofunctional acrylate is (1 ~ 2.5): 1; Described monofunctional acrylate comprises one or more in 2-phenoxyethyl acrylate, thiophenyl acrylate, ethoxyquin phenoxy group acrylate, adjacent phenyl benzene ethoxyethyl acrylate, 2-(p-cumyl-phenoxy group)-hexyl olefin(e) acid ester, 2-hydroxyl-3-phenyl benzene ethoxycarbonyl propyl acrylate, benzyl acrylate, benzyl methacrylate, and the described pair of official's acrylate monomer comprises one or more in ethoxylated bisphenol A diacrylate, ethoxy diphenyl base fluorenes diacrylate, adjacent phenyl benzene oxygen ethyl propylene acid esters; Described light trigger is selected from 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2,4, one or more in two (2,4, the 6-trimethylbenzoyl) phosphine oxide of 6-trimethylbenzoy-dipheny phosphine oxide, phenyl, st-yrax methyl-phenoxide; Described auxiliary agent is selected from one or more in flow agent, defoamer, stopper.
The third aspect, present invention provides the purposes of a kind of multilayered structure protective membrane as the aforementioned in electronic equipment screen protection.
Preferably, described electronics comprises mobile phone, notebook computer, panel computer, digital camera, e-book, refrigerator, personal player.
The laminated coating protective membrane that the present invention relates to, on PET blooming, be coated with one deck UV stiffening layer, its hardness is high, and adhesion strength is excellent; Below PET blooming, coat buffer layer, when being thumped or encounter sharp objects, the buffer layer on protective membrane can alleviate the destructive force be subject to, and the destructive force that the screen of display screen is subject to is less; Meanwhile, relatively traditional protective membrane, its duration of service is longer, and decreasing existing screen protecting film needs repeatedly to change and produce multiple discarded release film, environmental protection more, efficient.
Compared with prior art, the present invention has following beneficial effect:
1, surface hardness is high: the UV stiffening layer hardness of protective membrane upper end of the present invention is high, and adhesion strength is excellent, better can protect display screen.
2, erosion-resisting characteristics is good: protective membrane of the present invention, and owing to having buffer layer below blooming, when being thumped or collide, shock absorption is obvious, and display screen is not easily broken, and the long-time corner that uses there will not be fragment, reduces the injury to human body.
3, environmental protection, efficient: protective membrane of the present invention, due to its excellent property, surface not easily scratches, when being hit
4, not easily broken, also not easily there is fragment in corner, duration of service is longer, and decreasing existing screen protecting film needs repeatedly to change the multiple discarded release film of generation.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation of multilayered structure protective membrane of the present invention;
In figure: 1, blooming; 2, stiffening layer; 3, buffer layer; 4, silica-gel coating; 5, release film.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
As shown in Figure 1, blooming 1 and the UV stiffening layer 2 be placed in above this blooming 1 and UV buffer layer 3 below, silica-gel coating 4 are placed in buffer layer 3 times to the structure of a kind of multilayered structure protective membrane provided by the invention.
Blooming 1 is PET blooming, and stiffening layer 2 is UV light solidifying coating, and coat-thickness is generally 10 ~ 20um, and hardness can reach 1000g power 3H, and rub resistance number of times can reach 1000g power 200 times, meets the requirement of protective membrane high rigidity and scratch resistance; Meanwhile, the attachment of stiffening layer 2 on blooming 1 can reach 5B, cannot with manually being torn off; Buffer layer 3 is similarly UV light solidifying coating, and coat-thickness is generally 20 ~ 30um, and the resilience time is generally 2 ~ 3s, and this coating rebound performance is good, is placed in the lower end of blooming 1, when being thumped or collide, can play shock absorption; Meanwhile, the attachment of buffer layer 3 on blooming 1 can reach 5B equally; Layer of silica gel 4 is placed in the bottom surface of buffer layer 3, and layer of silica gel 4 is combined closely with the bottom surface of buffer layer 3, and attachment can reach 5B, and layer of silica gel 4 cannot be separated with buffer layer 3 by the mode manually torn off.Meanwhile, this layer of silica gel 4 is gluing formula adhering layer, does not have the characteristic of cull, and can repeat to tear subsides when protective membrane of the present invention being torn off display screen; And venting quality is excellent, not easily coated air produces bubbles.
Protective membrane of the present invention has a release film 5 further, and it is attached at the bottom of the layer of silica gel 4 on protective membrane.When needs use this new Type Protecting Film, first release film 5 is torn, then the layer of silica gel 4 of the lowermost end of protective membrane is attached on the screen of electronics; If there is bubble to produce between the screen of electronics and protective membrane, protective membrane can be utilized to repeat to tear the feature of subsides, between protective membrane and electronics, carry out the action repeating to tear subsides, till bubble collapse.
Step 1, preparation stiffening layer and the ultraviolet cured paint composition needed for buffer layer;
Step 2, the ultraviolet cured paint composition being used for stiffening layer is coated on above blooming 1, after UV photocuring, makes stiffening layer 2;
Step 3, the ultraviolet cured paint composition being used for buffer layer is coated on below blooming 1, after UV photocuring, makes buffer layer 3;
Step 4, buffer layer 3 another side coating silica gel, formed bonding glue-line 4;
Step 5, barrier film 5 of fitting on bonding glue-line 4;
Wherein, the composition of the ultraviolet cured paint composition that buffer layer is used and stiffening layer ultraviolet cured paint composition used is as illustrated in the examples below:
embodiment 1
Buffer layer coating composition comprises the following component counted by weight:
Wherein, described elastic optical cured resin is three official's esters of acrylic acid unsaturated polymers that Soft hard segment structure has concurrently.
Described three official's esters of acrylic acid unsaturated polymers utilize Michael reaction, and take room temperature one kettle way prepare and obtain, described preparation method comprises the steps:
At room temperature, take ethyl acetate as solvent, 2-phenoxyethyl acrylate and 1,6-hexanediamine reacts, after question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, in reaction system, add Viscoat 295 react; After question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, precipitate with normal hexane, then obtain three official's esters of acrylic acid light-cured resins of 100% solid content through vacuum-drying.
Stiffening layer coating composition comprises the following component counted by weight:
embodiment 2
Buffer layer coating composition comprises the following component counted by weight:
Wherein, described elastic optical cured resin is three official's esters of acrylic acid unsaturated polymers that Soft hard segment structure has concurrently.
Preferably, described three official's esters of acrylic acid unsaturated polymers utilize Michael reaction, and take room temperature one kettle way prepare and obtain, described preparation method comprises the steps:
At room temperature, take ethyl acetate as solvent, 2-phenoxyethyl acrylate and 1,6-hexanediamine reacts, after question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, in reaction system, add Viscoat 295 react; After question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, precipitate with normal hexane, then obtain three official's esters of acrylic acid light-cured resins of 100% solid content through vacuum-drying.
Preferably, described photo polymerization monomer is the mixture of monofunctional acrylate and two official's acrylate monomer, and wherein, the weight ratio of two official's acrylate monomer and monofunctional acrylate is (1 ~ 2.5): 1; Described monofunctional acrylate comprises one or more in 2-phenoxyethyl acrylate, thiophenyl acrylate, ethoxyquin phenoxy group acrylate, adjacent phenyl benzene ethoxyethyl acrylate, 2-(p-cumyl-phenoxy group)-hexyl olefin(e) acid ester, 2-hydroxyl-3-phenyl benzene ethoxycarbonyl propyl acrylate, benzyl acrylate, benzyl methacrylate, and the described pair of official's acrylate monomer comprises one or more in ethoxylated bisphenol A diacrylate, ethoxy diphenyl base fluorenes diacrylate, adjacent phenyl benzene oxygen ethyl propylene acid esters; Described light trigger is selected from 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2,4, one or more in two (2,4, the 6-trimethylbenzoyl) phosphine oxide of 6-trimethylbenzoy-dipheny phosphine oxide, phenyl, st-yrax methyl-phenoxide; Described auxiliary agent is selected from one or more in flow agent, defoamer, stopper.
Stiffening layer coating composition comprises the following component counted by weight:
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. a multilayered structure protective membrane, is characterized in that, comprises blooming, the upper surface of described blooming and lower surface are respectively arranged with stiffening layer and buffer layer, and the surface of described buffer layer is provided with silica-gel coating, wherein, described blooming is PET basement membrane, and described stiffening layer is UV photo-cured coating layer; Described buffer layer is the Thickness Ratio 1:2 of UV photo-cured coating layer, described stiffening layer and buffer layer.
2. multilayered structure protective membrane as claimed in claim 1, it is characterized in that, also comprise release film, described release film is arranged at the lower surface of silica-gel coating.
3. a preparation method for multilayered structure protective membrane as claimed in claim 1 or 2, is characterized in that, comprise the steps:
The ultraviolet cured paint composition being used for stiffening layer is coated on blooming upper surface, after UV photocuring, makes stiffening layer;
The ultraviolet cured paint composition being used for buffer layer is coated on blooming lower surface, after UV photocuring, makes buffer layer;
At the another side coating silica gel of buffer layer, form bonding glue-line;
Bonding glue-line is fitted barrier film.
4. the preparation method of multilayered structure protective membrane as claimed in claim 3, it is characterized in that, the described UV-cured resin for stiffening layer comprises the following component of percentage:
5. the preparation method of multilayered structure protective membrane as claimed in claim 4, it is characterized in that, described acrylate resin is one or more in the aliphatic urethane acrylate resin of low functionality, aliphatic polyester acrylate resin, aliphatic polyurethane methacrylate resin, aliphatic polyester methacrylate resin; Described monomer is one or more in Viscoat 295, trimethylolpropane trimethacrylate, ethoxyquin Viscoat 295, the third oxidation Viscoat 295, pentaerythritol triacrylate, tetramethylol methane tetraacrylate, ethoxyquin tetramethylol methane tetraacrylate, the third oxidation tetramethylol methane tetraacrylate, dipentaerythritol acrylate; Described light trigger is one or more in benzophenone, 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1 acetone, 2,4,6-trimethylbenzoy-dipheny phosphine oxides, isopropyl thioxanthone; Described solvent is one or more in vinyl acetic monomer, N-BUTYL ACETATE, Virahol, propyl carbinol, ethanol, propylene glycol monomethyl ether, ethylene glycol ethyl ether, 1-Methoxy-2-propyl acetate.Described flow agent is one or more in organic silicon modified by polyether, polyester resin change properties of organic silicon, polydimethylsiloxane, fluorin modified crylic acid ester, acrylate copolymer.
6. the preparation method of multilayered structure protective membrane as claimed in claim 4, it is characterized in that, the described UV-cured resin for buffer layer comprises the following component of percentage:
Wherein, described elastic optical cured resin is three official's esters of acrylic acid unsaturated polymers that Soft hard segment structure has concurrently.
7. the preparation method of multilayered structure protective membrane as claimed in claim 6, it is characterized in that, described three official's esters of acrylic acid unsaturated polymers utilize Michael reaction, and take room temperature one kettle way prepare and obtain, described preparation method comprises the steps:
At room temperature, take ethyl acetate as solvent, 2-phenoxyethyl acrylate and 1,6-hexanediamine reacts, after question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, in reaction system, add Viscoat 295 react; After question response terminates, in reaction system, add polyoxyethylene glycol-200 double methacrylate react, after question response terminates, precipitate with normal hexane, then obtain three official's esters of acrylic acid light-cured resins of 100% solid content through vacuum-drying.
8. the preparation method of multilayered structure protective membrane as claimed in claim 6, it is characterized in that, described photo polymerization monomer is the mixture of monofunctional acrylate and two official's acrylate monomer, wherein, the weight ratio of two official's acrylate monomer and monofunctional acrylate is (1 ~ 2.5): 1; Described monofunctional acrylate comprises one or more in 2-phenoxyethyl acrylate, thiophenyl acrylate, ethoxyquin phenoxy group acrylate, adjacent phenyl benzene ethoxyethyl acrylate, 2-(p-cumyl-phenoxy group)-hexyl olefin(e) acid ester, 2-hydroxyl-3-phenyl benzene ethoxycarbonyl propyl acrylate, benzyl acrylate, benzyl methacrylate, and the described pair of official's acrylate monomer comprises one or more in ethoxylated bisphenol A diacrylate, ethoxy diphenyl base fluorenes diacrylate, adjacent phenyl benzene oxygen ethyl propylene acid esters; Described light trigger is selected from 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2,4, one or more in two (2,4, the 6-trimethylbenzoyl) phosphine oxide of 6-trimethylbenzoy-dipheny phosphine oxide, phenyl, st-yrax methyl-phenoxide; Described auxiliary agent is selected from one or more in flow agent, defoamer, stopper.
9. the purposes of a multilayered structure protective membrane as claimed in claim 1 or 2 in electronic equipment screen protection.
10. the purposes of multilayered structure protective membrane as claimed in claim 9 in electronic equipment screen protection, it is characterized in that, described electronics comprises mobile phone, notebook computer, panel computer, digital camera, e-book, refrigerator, personal player.
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| CN201510765612.4A CN105331277B (en) | 2015-11-11 | 2015-11-11 | A kind of multilayered structure protective film and its preparation method and application |
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| CN105331277B CN105331277B (en) | 2018-08-10 |
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| CN107722572A (en) * | 2017-10-26 | 2018-02-23 | 四川羽玺电子科技有限公司 | A kind of PET mould release membrances and its preparation technology |
| CN112680008A (en) * | 2020-06-08 | 2021-04-20 | 住华科技股份有限公司 | Antifogging coating composition, optical film prepared from antifogging coating composition and display device with optical film |
| CN115315469A (en) * | 2020-03-26 | 2022-11-08 | 可隆工业株式会社 | Optical film having excellent impact resistance and display device including the same |
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| CN105331277B (en) | 2018-08-10 |
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