CN113337240B - UV (ultraviolet) light curing glue, screen protective film and preparation method and application thereof - Google Patents
UV (ultraviolet) light curing glue, screen protective film and preparation method and application thereof Download PDFInfo
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- CN113337240B CN113337240B CN202110716140.9A CN202110716140A CN113337240B CN 113337240 B CN113337240 B CN 113337240B CN 202110716140 A CN202110716140 A CN 202110716140A CN 113337240 B CN113337240 B CN 113337240B
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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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
- 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
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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
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Abstract
The invention provides UV (ultraviolet) photocuring glue, a screen protective film, and a preparation method and application thereof, and relates to the technical field of screen protection materials. The UV light-cured glue mainly comprises thermosetting acrylic resin, an acrylate monomer and a photoinitiator in a specific proportion, wherein the thermosetting acrylic resin is a copolymer synthesized by taking vinyl monomers such as acrylate, methacrylate, styrene and the like as main raw materials, and the copolymer forms a basic framework of the screen protective film; meanwhile, the acrylate monomer is added for introducing functional groups or crosslinking points and improving the adhesive force; the addition of the photoinitiator is to provide free radicals under light to initiate a free radical chain reaction to initiate a chemical reaction between the monomers. The UV light curing glue prepared by the raw material ratio can fully meet the requirements of hardness, elasticity and the like of a screen film of the curved-surface screen electronic equipment.
Description
Technical Field
The invention relates to the technical field of screen protection materials, in particular to UV (ultraviolet) photocuring glue, a screen protection film, and a preparation method and application thereof.
Background
Along with social development, electronic products are used more and more, and in order to improve hand feeling, controllability and visual effect of the electronic products, a plurality of electronic products use curved screens. But the electronic product is difficult to avoid damage in the using process, and the appearance of the screen protective film obviously can well solve the problem. However, the existing mobile phone protective film can only be attached to a flat surface of a display, and the curved screen cannot be completely attached to the flat surface of the display due to edge bending. In order to meet the development of curved mobile phones, curved mobile phone protective films are correspondingly developed. The existing curved surface protective film mainly comprises three main types: firstly, adhering a TPU and acrylic adhesive film; hot bending the PET film; and thirdly, hot bending the toughened glass film.
However, the above curved surface protection film has the following drawbacks: TPU + acrylic adhesive film: the TPU material belongs to a soft film series, is wholly soft and not stiff enough, so that the alignment is not accurate during film pasting, the requirement on a film pasting method is high, the acrylic adhesive has high viscosity and poor flowability, and the whole film pasting experience is influenced by the aid of corresponding scratch card auxiliary exhaust during film pasting. Hot bending the PET film: the PET is adopted as a base material, other hardened layer designs are lacked, the surface hardness of the product is low, and the durability of the product is poor. Thirdly, hot bending the toughened glass film: the cost is high, the edge is easy to break, and the tolerance value in the hot bending process can not be compensated by a corresponding glue layer due to the integral rigidity of the glass, so that the middle part of the product can have no glue phenomenon, and the control sensitivity is influenced. In addition, most of the existing curved surface protective films are prepared by adopting a tape casting method, so that the production cost is further increased, and the 3D protective film is high in price.
Therefore, it is necessary and urgent to develop a coating type UV light curing glue and a screen protection film prepared therefrom to solve the problems of sticking film lifting and high cost caused by the over-hardness and over-stiffness of the existing general 3D protection film substrate.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention provides UV (ultraviolet) light curing glue which mainly comprises thermosetting acrylic resin, an acrylate monomer and a photoinitiator in a specific proportion, and the UV light curing glue prepared by the raw material proportion can fully meet the requirements of hardness, elasticity and the like of a screen film of a curved-surface screen electronic device.
The second purpose of the invention is to provide a preparation method of the UV light curing glue.
The third purpose of the invention is to provide a screen protection film, which is mainly prepared by curing the UV light curing glue after UV irradiation.
The fourth object of the present invention is to provide a method for preparing a screen protective film.
The fifth purpose of the present invention is to provide an application of the UV light curing glue or the screen protection film, and the UV light curing glue or the screen protection film can be widely applied to the preparation of the screen protection device of the curved screen electronic device.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the invention provides UV (ultraviolet) light curing glue which comprises the following components in parts by weight: 50-60 parts of thermosetting acrylic resin, 48-50 parts of acrylate monomer and 4-6 parts of photoinitiator.
Further, by mass, the UV light curing glue comprises: 53-56 parts of thermosetting acrylic resin, 48-49 parts of acrylate monomer and 4-5 parts of photoinitiator;
preferably, the UV light curing glue comprises the following components in parts by weight: 54 parts of thermosetting acrylic resin, 48 parts of acrylate monomer and 5 parts of photoinitiator.
Further, the thermosetting acrylic resin includes at least one of Eternal6148J75, Sartomer CN965, Sartomer CN966J, Nippton Taogosei UV300013, and double bonds 5222.
Further, the acrylate monomers include pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, acrylamide, 1, 6-hexanediol dimethacrylate, 1, 6-hexanediol diacrylate, ethylene glycol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, p-neopentyl glycol diacrylate, trimethylolpropane triacrylate, trimethylolpentane trimethacrylate, trimethylolpropane pentaerythritol triacrylate, propoxylated neopentyl glycol diacrylate, ethoxylated 1, 6-hexanediol diacrylate and tris (2-acryloxyethyl) isocyanurate.
Further, the photoinitiator comprises at least one of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-methylphenyl propane-1-ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-acetone, benzoin dimethyl ether, tolidine, 2-isopropyl thioxanthone and 2, 4, 6- (trimethylbenzoyl) -diphenyl phosphine oxide;
preferably, the photoinitiator comprises 1-hydroxycyclohexyl phenyl ketone and 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide.
Further, by mass, the UV light curing glue further comprises: 0-1 part of a leveling agent, 0-1 part of a peeling force modifier, 0-1 part of an anti-blocking agent and 0-1 part of an organic solvent;
preferably, the leveling agent comprises at least one of BYK-103, BYK-333, BYK-307, BYK-377, BYK-378, BYK-394, BYK-UV3500, BYK-UV3505, BYK-UV3510, BYK-306, 9137, tego Glide400, tego Glide100, tego Glide405, tego Glide406, tego Glide450 and tego Flow 370;
preferably, the release force modifier comprises at least one of polyethylene wax, tetrafluoroethylene wax slurry, polydimethylsiloxane, methylcellulose and polyvinyl alcohol;
preferably, the anti-blocking agent comprises at least one of silicon dioxide powder, silicon dioxide slurry, nano zinc oxide and polyethylene wax;
preferably, the organic solvent includes at least one of ethyl acetate, butyl acetate, methanol, ethanol, propanol, isopropanol, isobutanol, n-butanol, methyl isobutyl ketone, isophorone, acetone, butanone, cyclohexanone, toluene, xylene, propylene glycol methyl ether, and dipropylene glycol methyl ether.
The invention provides a preparation method of the UV light curing glue, which comprises the following steps:
and uniformly mixing the raw materials to prepare the UV photocuring glue.
The screen protective film provided by the invention is mainly prepared by curing the UV light curing glue after UV irradiation.
The invention provides a preparation method of the screen protection film, which comprises the following steps:
coating the UV light curing glue on the substrate, and then carrying out full-angle UV radiation on the coated UV light curing glue by using an annular UV lamp so as to solidify the coating on the surface of the substrate into a compact screen protective film.
The invention provides an application of the UV light curing glue or the screen protection film in preparing a screen protection device of curved screen electronic equipment.
Compared with the prior art, the invention has the beneficial effects that:
the UV light-cured glue provided by the invention mainly comprises thermosetting acrylic resin, acrylate monomers and a photoinitiator in a specific proportion, wherein the thermosetting acrylic resin is a copolymer synthesized by taking vinyl monomers such as acrylate, methacrylate and styrene as main raw materials, and the copolymer forms a basic skeleton of a cured product; meanwhile, the acrylate monomer is added for introducing functional groups or crosslinking points and improving the adhesive force; the addition of the photoinitiator is to provide free radicals under light to initiate a free radical chain reaction to initiate a chemical reaction between the monomers. The UV light curing glue prepared by the raw material ratio can fully meet the requirements of hardness, elasticity and the like of a screen film of the curved-surface screen electronic equipment.
The preparation method of the UV light-curing glue provided by the invention comprises the step of uniformly mixing the raw materials to prepare the UV light-curing glue. The preparation method has the advantage of simple preparation process.
The screen protection film provided by the invention is mainly prepared by curing the UV light curing glue after UV irradiation, has good toughness and impact resistance, is excellent in high temperature resistance, can resist 150 ℃ for 30min, is easy to peel, has excellent anti-blocking property, and further effectively solves the problems of sticking film warping and high cost caused by over-hard and over-high stiffness of the existing common 3D protection film base material.
According to the preparation method of the screen protection film, the UV light curing glue is coated on the base material, and then the coated UV light curing glue is subjected to full-angle UV radiation by using the annular UV lamp, so that the coating on the surface of the base material is cured into the compact screen protection film. The preparation method has the advantages of simple process and easy operation.
The UV light curing glue or the screen protection film provided by the invention can be widely applied to the preparation of screen protection devices of curved screen electronic equipment.
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 embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a process for preparing a screen protection film according to embodiment 1 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. 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.
According to one aspect of the invention, the UV light curing glue comprises the following components in parts by mass: 50-60 parts of thermosetting acrylic resin, 48-50 parts of acrylate monomer and 4-6 parts of photoinitiator.
The UV light-cured glue provided by the invention mainly comprises thermosetting acrylic resin, acrylate monomers and a photoinitiator in a specific proportion, wherein the thermosetting acrylic resin is a copolymer synthesized by taking vinyl monomers such as acrylate, methacrylate and styrene as main raw materials, and the copolymer forms a basic skeleton of a cured product; meanwhile, the acrylate monomer is added for introducing functional groups or crosslinking points and improving the adhesive force; the photoinitiator is added to provide free radicals under light to initiate a free radical chain reaction to initiate a chemical reaction between the monomers. The UV light curing glue prepared by the raw material ratio can fully meet the requirements of hardness, elasticity and the like of a screen film of the curved-surface screen electronic equipment.
In a preferred embodiment of the present invention, the UV light curing glue comprises, by mass: 53-56 parts of thermosetting acrylic resin, 48-49 parts of acrylate monomer and 4-5 parts of photoinitiator;
preferably, the UV light curing glue comprises the following components in parts by weight: 54 parts of thermosetting acrylic resin, 48 parts of acrylate monomer and 5 parts of photoinitiator.
According to the invention, the technical effect of the UV light curing glue is further optimized by further adjusting and optimizing the dosage proportion of the raw materials of each component.
In a preferred embodiment of the invention, the thermosetting acrylic resin comprises at least one of Eternal6148J75, Sartomer CN965, Sartomer CN966J, Nippton Taososei UV300013, and double bonds 5222.
In a preferred embodiment, the acrylic resin is a copolymer synthesized from vinyl monomers such as acrylic acid esters, methacrylic acid esters, and styrene as main raw materials. It can be classified into thermoplastic acrylic resins and thermosetting acrylic resins according to film forming characteristics. Wherein, the film forming of the thermoplastic acrylic resin mainly depends on the volatilization of a solvent or a dispersion medium (usually water) to lead macromolecules or macromolecular particles to be aggregated and fused into a film, and the film forming process has no chemical reaction and has the defect of poor solvent resistance of the film; the thermosetting acrylic resin is also called as reactive crosslinking resin, and the film forming process is accompanied by the crosslinking reaction of a plurality of reactive groups of the components, so that the film has a net structure, and the solvent resistance and the chemical resistance of the film are good, and the film is suitable for preparing anticorrosive coatings. According to the invention, thermosetting acrylic resin is selected, and in the formula, as the 3D protective film of a target product has certain hardness requirement, a series of hard monomers such as Eternal6148J75, Sartomer CN965, Sartomer CN966J, Nippton Taogosei UV300013 and double bonds 5222 are selected to ensure the hardness requirement of the protective film.
In a preferred embodiment of the present invention, the acrylate monomer comprises pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, acrylamide, 1, 6-hexanediol dimethacrylate, 1, 6-hexanediol diacrylate, ethylene glycol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, p-neopentyl glycol diacrylate, trimethylolpropane triacrylate, trimethylolpentane trimethacrylate, trimethylolpropane pentaerythritol triacrylate, propoxylated neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, ethoxylated neopentyl glycol diacrylate, and mixtures thereof, At least one of 1, 6-hexanediol diacrylate and tris (2-acryloxyethyl) isocyanurate is ethoxylated.
As a preferred embodiment, the acrylate monomer in the following embodiments is selected from only dipentaerythritol triacrylate monomer (PETA) and 23 parts 1,6 hexanediol diacrylate (HDDA), and none of the other exemplified monomers give the desired results.
In a preferred embodiment of the present invention, the photoinitiator comprises at least one of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-methylphenyl propane-1-one, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-propanone, benzoin bis methyl ether, ditoluenone, 2-isopropyl thioxanthone, 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide;
preferably, the photoinitiator comprises 1-hydroxycyclohexyl phenyl ketone and 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide.
In a preferred embodiment, the two photoinitiators, 1-hydroxycyclohexyl phenyl ketone and 2, 4, 6- (trimethylbenzoyl) -diphenyl phosphine oxide, are selected primarily for odor, so that after the photocuring, no odor remains and the completeness of crosslinking is ensured.
In a preferred embodiment of the present invention, the UV light curing glue further comprises, in parts by mass: 0-1 part of a leveling agent, 0-1 part of a peeling force modifier, 0-1 part of an anti-blocking agent and 0-1 part of an organic solvent;
in the above preferred embodiment, the leveling agent comprises at least one of BYK-103, BYK-333, BYK-307, BYK-377, BYK-378, BYK-394, BYK-UV3500, BYK-UV3505, BYK-UV3510, BYK-306, 9137, tego Glide400, tego Glide100, tego Glide405, tego Glide406, tego Glide450, tego Flow 370;
in the above preferred embodiment, the release force modifier includes at least one of polyethylene wax, tetrafluoroethylene wax slurry, polydimethylsiloxane, methylcellulose, polyvinyl alcohol;
in the above preferred embodiment, the anti-blocking agent includes at least one of silica powder, silica slurry, nano zinc oxide, polyethylene wax;
in the above preferred embodiment, the organic solvent includes at least one of ethyl acetate, butyl acetate, methanol, ethanol, propanol, isopropanol, isobutanol, n-butanol, methyl isobutyl ketone, isophorone, acetone, methyl ethyl ketone, cyclohexanone, toluene, xylene, propylene glycol methyl ether, and dipropylene glycol methyl ether.
According to one aspect of the invention, the preparation method of the UV light curing glue comprises the following steps:
and uniformly mixing the raw materials to prepare the UV photocuring glue.
The preparation method of the UV light-curing glue provided by the invention comprises the step of uniformly mixing the raw materials to prepare the UV light-curing glue. The preparation method has the advantage of simple preparation process.
According to one aspect of the invention, the screen protection film is mainly prepared by curing the UV light curing glue after UV irradiation.
The screen protection film provided by the invention is mainly prepared by curing the UV light curing glue after UV irradiation, has good toughness and impact resistance, is excellent in high temperature resistance, can resist 150 ℃ for 30min, is easy to peel, has excellent anti-blocking property, and further effectively solves the problems of sticking film warping and high cost caused by over-hard and over-high stiffness of the existing common 3D protection film base material.
According to an aspect of the present invention, a method of manufacturing the above-described screen protective film includes the steps of:
coating UV (ultraviolet) photocuring glue on a substrate, and then carrying out full-angle UV radiation on the coated UV photocuring glue by using an annular UV lamp so as to solidify the coating on the surface of the substrate into a compact screen protective film.
According to the preparation method of the screen protection film, the UV light curing glue is coated on the base material, and then the coated UV light curing glue is subjected to full-angle UV radiation by using the annular UV lamp, so that the coating on the surface of the base material is cured into the compact screen protection film. The preparation method has the advantages of simple process and easy operation.
Preferably, the coating type UV curing glue is coated on the substrate by a coating machine and then enters an annular UV lamp for full-angle UV radiation, so that the coating on the surface of the substrate is cured into a compact protective adhesive film.
According to one aspect of the invention, the UV light curing glue or the screen protection film is applied to the preparation of a screen protection device of curved-screen electronic equipment.
The UV light curing glue or the screen protection film provided by the invention can be widely applied to the preparation of screen protection devices of curved screen electronic equipment.
The technical solution of the present invention will be further described with reference to the following examples.
Example 1
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
as shown in fig. 1, the method for preparing the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer Eternal6148J75, and adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184) to prepare UV curing glue;
(2) diluting UV curing glue to 6000-9000Cp which is suitable for coating by a slit coater (SLOT DIE), coating UV curing glue on a release film (the specification of the release film is B type, 30g) by a coating head, and curing to produce the UV curing glue, wherein the UV illumination intensity is 1000mj (millijoule)/cm 2 And preparing the screen protective film.
Example 2
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer Sartomer CN965, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184) to prepare UV curing glue;
(2) diluting UV curing glue to be 6000-9000Cp suitable for coating, coating UV curing glue on a release film (the specification of the release film is B type, 30g) by a coating head, and curing for production, wherein the UV illumination intensity is 1000mj (millijoule)/cm 2 And preparing the screen protective film.
Example 3
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer Sartomer CN966J, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184) to prepare UV curing glue;
(2) the same procedure as in example 2 was repeated.
Example 4
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer Nippton Taogosei UV300013, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA) and 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184) to prepare UV curing glue;
(2) the same procedure as in example 2 was repeated.
Example 5
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer double bonds 5222, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184) to prepare UV curing glue;
(2) the same procedure as in example 2 was repeated.
Example 6
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of urethane acrylate prepolymer Eternal6148J75, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of photoinitiator 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) and 1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (184), and additionally adding 1 part of flatting agent tego Glide400, 1 part of peeling force modifier methyl cellulose and 1 part of anti-blocking agent polyethylene wax to prepare UV curing glue;
(2) the same procedure as in example 2 was repeated. Diluting UV curing glue to the viscosity (6000- 2 Curing the product under the UV light energy to obtain the screen protective film.
Comparative example 1
A screen protection film is mainly prepared by UV (ultraviolet) light curing glue through UV irradiation and curing;
the preparation method of the screen protection film comprises the following steps:
(1) weighing 54 parts of double bonds DM238 of a polyurethane acrylate prepolymer, adding 25 parts of dipentaerythritol triacrylate monomer (PETA), 23 parts of 1, 6-hexanediol diacrylate (HDDA), 4 parts of 2, 4, 6- (trimethylbenzoyl) -diphenylphosphine oxide (TPO) as a photoinitiator and 1 part of 1-hydroxycyclohexyl phenyl ketone (184) as a photoinitiator to prepare UV curing glue;
(2) the same procedure as in example 2 was repeated.
Experimental example 1
The manufacturing method has the advantages that the UV curing glue is coated on the ROLL TO ROLL production process, the quality problems caused by attaching the protective film by the attaching process, such as the quality problems caused by attaching the protective film due TO the fact that the base material is too hard, the sticking film is warped due TO too high stiffness, and the like, can be effectively solved by forming the film after curing, and the too high production cost can be effectively reduced. In addition, the pressing force channel is too large in the process of film bonding and protecting, so that the structure or special functionality of the characteristic of the protected object is damaged, and the damage can be greatly reduced when the protective film produced by the process is used for protecting the protected object. Now, the performance of the screen protection films prepared in the embodiments 1 to 6 and the comparative example 1 of the present application is tested, and the specific results are as follows:
note: 1) easy stripping property, the coating of the coating type UV curing glue is stripped from the surface of an irregular workpiece, and if the coating is easy to strip, the easy stripping property is good; 2) the hardness was measured by the Shore durometer, and the hardness of HA was almost close to the measurement range of the durometer (100 HA). 3) The viscosity measurement temperature was 60 ℃. 4) The strength tests were performed in triplicate and the maximum value was taken. 5) The initial b values are measured in reflection mode and the transmission and haze values are measured in transmission mode.
According to the test results, the screen protection film prepared by the method has excellent tensile strength and shore hardness, and has certain elasticity and elongation. The technical difficulties that the existing common 3D protective film is too hard and too high in stiffness, so that the sticking film is warped and the like can be solved, in addition, the price of the selected materials is substantial, expensive large-scale instruments and equipment are not needed, the production cost can be reduced to a certain extent, and the problem that the cost of the protective film is high is solved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The screen protection film is characterized by being prepared by curing UV (ultraviolet) light curing glue after UV irradiation;
according to the parts by mass, the UV photocuring glue comprises: 50-60 parts of thermosetting acrylic resin, 48-50 parts of acrylate monomer and 4-6 parts of photoinitiator;
the thermosetting acrylic resin comprises at least one of Eternal6148J75, Sartomer CN965, Sartomer CN966J, Nippton taoosei UV300013 and double bonds 5222;
the acrylate monomer comprises dipentaerythritol triacrylate monomer (PETA) and 23 parts of 1, 6-hexanediol diacrylate (HDDA);
the photoinitiator comprises 1-hydroxycyclohexyl phenyl ketone and 2, 4, 6- (trimethylbenzoyl) -diphenyl phosphine oxide.
2. The screen protective film according to claim 1, wherein the UV light curing glue comprises, in parts by mass: 53-56 parts of thermosetting acrylic resin, 48-49 parts of acrylate monomer and 4-5 parts of photoinitiator.
3. The screen protective film according to claim 1, wherein the UV light curing glue comprises, in parts by mass: 54 parts of thermosetting acrylic resin, 48 parts of acrylate monomer and 5 parts of photoinitiator.
4. The screen protective film according to claim 1, wherein the UV light curing glue further comprises, in parts by mass: 0-1 part of a leveling agent, 0-1 part of a peeling force modifier, 0-1 part of an anti-blocking agent and 0-1 part of an organic solvent;
the leveling agent comprises at least one of BYK-103, BYK-333, BYK-307, BYK-377, BYK-378, BYK-394, BYK-UV3500, BYK-UV3505, BYK-UV3510, BYK-306, 9137, tego Glide400, tego Glide100, tego Glide405, tego Glide406, tego Glide450 and tego Flow 370;
the peeling force modifier comprises at least one of polyethylene wax, tetrafluoroethylene wax slurry, polydimethylsiloxane, methylcellulose and polyvinyl alcohol;
the anti-blocking agent comprises at least one of silicon dioxide powder, silicon dioxide slurry, nano zinc oxide and polyethylene wax;
the organic solvent comprises at least one of ethyl acetate, butyl acetate, methanol, ethanol, propanol, isopropanol, isobutanol, n-butanol, methyl isobutyl ketone, isophorone, acetone, butanone, cyclohexanone, toluene, xylene, propylene glycol methyl ether and dipropylene glycol methyl ether.
5. The screen protective film according to claim 1, wherein the preparation method of the UV light curing glue comprises the following steps:
and uniformly mixing the raw materials to prepare the UV photocuring glue.
6. A method of manufacturing a screen protective film according to any one of claims 1 to 5, comprising the steps of:
coating the UV light curing glue on the substrate, and then carrying out full-angle UV radiation on the coated UV light curing glue by using an annular UV lamp so as to solidify the coating on the surface of the substrate into a compact screen protective film.
7. Use of the screen protective film according to any one of claims 1 to 6 in the preparation of a screen protection device of a curved screen electronic device.
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| CN113980584B (en) * | 2021-12-17 | 2023-06-06 | 河源然生新材料有限公司 | UV glue, preparation method, application and protective film |
| CN115651556A (en) * | 2022-10-17 | 2023-01-31 | 韩信高科技(深圳)有限公司 | Peep-proof UV optical curing membrane |
| CN115491131B (en) * | 2022-10-26 | 2023-11-28 | 西安思摩威新材料有限公司 | Ultraviolet light curing organic glue for OLED packaging and application method thereof |
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