CN111394003A - Curved screen explosion-proof membrane and manufacturing method thereof - Google Patents
Curved screen explosion-proof membrane and manufacturing method thereof Download PDFInfo
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- CN111394003A CN111394003A CN202010356817.8A CN202010356817A CN111394003A CN 111394003 A CN111394003 A CN 111394003A CN 202010356817 A CN202010356817 A CN 202010356817A CN 111394003 A CN111394003 A CN 111394003A
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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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J183/00—Adhesives 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; Adhesives based on derivatives of such polymers
- C09J183/04—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
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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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
- C09J2467/00—Presence of polyester
- C09J2467/003—Presence of polyester in the primer coating
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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
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
- C09J2479/086—Presence of polyamine or polyimide polyimide in the substrate
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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
- C09J2483/00—Presence of polysiloxane
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Abstract
The invention discloses a curved screen explosion-proof membrane and a manufacturing method thereof, wherein the membrane can be adhered to the surface of a curved screen with high viscosity so as to achieve the effect of protecting the curved screen, and meanwhile, the membrane is easy to rework even if the initial adhesion is not good. The curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 45-75 mu m, a bonding layer with the thickness of 35 mu m and a release membrane. The bonding layer comprises the following components in parts by weight: 15-40 parts of vinyl silicone oil, 20-35 parts of methyl silicone oil, 20-45 parts of vinyl raw rubber, 2-10 parts of hydroxyl raw rubber, 5-65 parts of methyl raw rubber, 1-12 parts of vinyl MQ resin, 15-40 parts of methyl MQ resin, 0.1-5 parts of octamethylcyclotetrasiloxane, 0.5-4 parts of hydrogen-containing silicone oil and 1-50 parts of n-hexane. The release film comprises the following components in parts by weight: 15-32 parts of ethyl acrylate, 10-30 parts of isooctyl acrylate, 4-28 parts of vinyl acetate, 12-33 parts of acrylamide, 15-35 parts of styrene, 15-30 parts of methyl methacrylate, 10-32 parts of methacrylic acid, 5-30 parts of diaminoethyl methacrylate, 0.5-18 parts of isocyanate and 1-30 parts of diisocyanate.
Description
Technical Field
The invention relates to the technical field of films, in particular to a curved screen explosion-proof film and a manufacturing method thereof.
Background
With the rapid development of the electronic industry, people have not only pursued the performance of electronic products, but also often pay attention to the individual sensory experience, and the curved display screen is a product with better sensory experience for people in the scientific and technological development. The curved surface display gives people the field of vision wider because slightly can more press close to the user to the crooked edge of user, realizes the basically same angle of vwatching with screen central point, and the curved surface screen can let the people experience better sight shadow effect simultaneously, has promoted the broad sense on the user's visual experience.
At present, a plurality of curved-surface screen products appear in the market, for example, mobile phones of the brands such as samsung S6, samsung S7, VIVO Xplay 5, and the like, and the mobile phone ingeniously utilizes the refraction principle of glass, and refracts a borderless effect by making the edge of a screen into a curved surface with a certain radian on the premise of not changing the size of the screen, so as to obtain a better visual effect. As an electronic product with higher price, people often stick a protective film on the surface of a display screen of the electronic product when the electronic product is used, so that the display screen is prevented from being damaged and even burst due to external impact as much as possible.
In order to adapt to the curved screen products, some curved screen films appear on the market, however, the curved screen films in the prior art have poor viscosity, poor film adhesion following performance and easy edge warping. In addition, the light transmission of the films is often poor, the definition is insufficient, and the use experience of the product is seriously influenced. In addition, the curved screen membrane in the prior art is not good in stability and not good in explosion-proof effect.
Therefore, the above problems need to be solved.
Disclosure of Invention
The invention aims to provide a curved screen explosion-proof membrane which is adhered to the surface of a curved screen with high viscosity so as to achieve the effect of protecting the curved screen and is easy to rework even if the adhesion is not good in the initial stage and a manufacturing method thereof.
In order to achieve the technical purpose, the first technical scheme provided by the invention is as follows: a curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 45-75 mu m, an adhesive layer with the thickness of 35 mu m and a release membrane.
In order to achieve a better attaching effect, the adhesive layer is composed of the following components in parts by weight: 15-40 parts of vinyl silicone oil, 20-35 parts of methyl silicone oil, 20-45 parts of vinyl raw rubber, 2-10 parts of hydroxyl raw rubber, 5-65 parts of methyl raw rubber, 1-12 parts of vinyl MQ resin, 15-40 parts of methyl MQ resin, 0.1-5 parts of octamethylcyclotetrasiloxane, 0.5-4 parts of hydrogen-containing silicone oil and 1-50 parts of n-hexane.
In order to achieve a better explosion-proof effect, the release film disclosed by the invention comprises the following components in parts by weight: 15-32 parts of ethyl acrylate, 10-30 parts of isooctyl acrylate, 4-28 parts of vinyl acetate, 12-33 parts of acrylamide, 15-35 parts of styrene, 15-30 parts of methyl methacrylate, 10-32 parts of methacrylic acid, 5-30 parts of diaminoethyl methacrylate, 0.5-18 parts of isocyanate and 1-30 parts of diisocyanate.
As a specific embodiment of the present invention, the bonding layer is composed of the following components in parts by weight: 32 parts of vinyl silicone oil, 28 parts of methyl silicone oil, 35 parts of vinyl raw rubber, 7 parts of hydroxyl raw rubber, 43 parts of methyl raw rubber, 9 parts of vinyl MQ resin, 22 parts of methyl MQ resin, 3 parts of octamethylcyclotetrasiloxane, 3.7 parts of hydrogen-containing silicone oil and 36 parts of normal hexane.
As a specific embodiment of the invention, the release film is composed of the following components in parts by weight: 27 parts of ethyl acrylate, 19 parts of isooctyl acrylate, 22 parts of vinyl acetate, 28 parts of acrylamide, 30 parts of styrene, 20 parts of methyl methacrylate, 29 parts of methacrylic acid, 25 parts of diaminoethyl methacrylate, 10.7 parts of isocyanate and 18 parts of diisocyanate.
In order to achieve a better explosion-proof effect, the surface of the polyimide film is subjected to corona treatment or acid-base treatment, the light transmittance is more than 90%, and the haze is less than 1%.
The second technical scheme provided by the invention is as follows: a preparation method of the curved screen explosion-proof membrane comprises the following steps:
step 1: sequentially adding polyester resin, organic silicon modified polyester resin and butanone into a liquid preparation barrel, stirring and standing to prepare a coating liquid with the solid content of 20-60%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying to obtain the polyimide film;
and step 3: sequentially attaching the adhesive layer and the release film, and curing at 40 deg.C for 2-4 days.
Wherein the mixing mass ratio of the polyester resin and the organic silicon modified polyester resin in the step 1 is 10-15: 1.
wherein the stirring time in the step 1 is 20-40 min.
Wherein the drying temperature in the step 2 is 60-140 ℃.
Compared with the prior art, the invention has the following beneficial effects:
(1) the polyimide film is used as the base material of the explosion-proof film, has excellent heat resistance and stretchability, can meet the requirements of the corner part of a curved surface structure on the stretching and shrinking performance of the material when used as the base material of the explosion-proof film of the curved surface screen, solves the problems that the PET explosion-proof film cannot be completely attached to the curved surface and the PET explosion-proof film is easy to warp after hot bending processing, and reduces the reject ratio;
(2) according to the application, the thickness of the polyimide film is controlled to be 45-75 microns, the thickness of the bonding layer is controlled to be 35 microns, the thickness of the explosion-proof film is reduced while the bonding effect is ensured, and the thermal bending processing of the explosion-proof film is facilitated;
(3) according to the application, the polyimide film is subjected to corona treatment or acid-base treatment in advance, so that the adhesive force of the adhesive layer on the polyimide film is improved;
(4) the coating liquid provided by the application is beneficial to improving the adhesive force between the bonding layer and the polyimide film and between the bonding layer and the glass, and still has higher peeling force at high temperature, so that the prepared explosion-proof film can still be well attached to a 3D curved surface after being subjected to hot bending processing, and the reject ratio is reduced;
(5) the sticking layer has reasonable components and good viscosity, so that the sticking following performance of the curved screen film is good, the curved screen film can be completely stuck with the curved screen, and the edge is not easy to warp;
(6) the release film can not be broken and splashed after a product is impacted by external force, fragments can be bonded together through the explosion-proof film, and the safety and the stability of the product are further improved; the adhesive has reasonable components, excellent high and low temperature and humidity resistance, no problems of bubbles, water stain and the like under the conditions of high temperature, low temperature, high humidity and the like, and has the advantages of strong and stable adhesive force when being used as a filling adhesive and a double-sided adhesive for bonding between film layers.
Detailed Description
The technical solution of the present invention will be further clarified by the following specific examples, which are only for illustrative purposes and do not limit the claims of the present invention.
Example 1
The curved screen explosion-proof membrane is prepared by the following steps:
step 1: polyester resin and organic silicon modified polyester resin are mixed according to the mass ratio of 10: 1, mixing, adding the mixture and butanone into a solution preparation barrel, stirring for 40min, standing, and preparing a coating solution with the solid content of 20%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying at 140 ℃ to obtain the polyimide film;
and step 3: and (3) after the bonding layer and the release film are sequentially bonded, curing for 2 days at 40 ℃ to obtain the curved-surface screen explosion-proof film.
The curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 75 micrometers, an adhesive layer with the thickness of 35 micrometers and a release membrane; the surface of the polyimide film is subjected to corona treatment or acid-base treatment, the light transmittance is more than 90 percent, and the haze is less than 1 percent.
The bonding layer comprises the following components in parts by weight: 15 parts of vinyl silicone oil, 35 parts of methyl silicone oil, 20 parts of vinyl raw rubber, 10 parts of hydroxyl raw rubber, 5 parts of methyl raw rubber, 12 parts of vinyl MQ resin, 15 parts of methyl MQ resin, 5 parts of octamethylcyclotetrasiloxane, 0.5 part of hydrogen-containing silicone oil and 50 parts of normal hexane.
The release film comprises the following components in parts by weight: 15 parts of ethyl acrylate, 30 parts of isooctyl acrylate, 4 parts of vinyl acetate, 33 parts of acrylamide, 15 parts of styrene, 30 parts of methyl methacrylate, 10 parts of methacrylic acid, 30 parts of diaminoethyl methacrylate, 0.5 part of isocyanate and 30 parts of diisocyanate.
Example 2
The curved screen explosion-proof membrane is prepared by the following steps:
step 1: polyester resin and organic silicon modified polyester resin are mixed according to the mass ratio of 15: 1, mixing, adding the mixture and butanone into a solution preparation barrel, stirring for 20min, standing, and preparing a coating solution with the solid content of 60%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying at 60 ℃ to obtain the polyimide film;
and step 3: and (3) after the bonding layer and the release film are sequentially bonded, curing for 4 days at 40 ℃ to obtain the curved-surface screen explosion-proof film.
The curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 45 micrometers, an adhesive layer with the thickness of 35 micrometers and a release membrane; the surface of the polyimide film is subjected to corona treatment or acid-base treatment, the light transmittance is more than 90 percent, and the haze is less than 1 percent.
As a specific embodiment of the present invention, the bonding layer is composed of the following components in parts by weight: 32 parts of vinyl silicone oil, 28 parts of methyl silicone oil, 35 parts of vinyl raw rubber, 7 parts of hydroxyl raw rubber, 43 parts of methyl raw rubber, 9 parts of vinyl MQ resin, 22 parts of methyl MQ resin, 3 parts of octamethylcyclotetrasiloxane, 3.7 parts of hydrogen-containing silicone oil and 36 parts of normal hexane.
As a specific embodiment of the invention, the release film is composed of the following components in parts by weight: 27 parts of ethyl acrylate, 19 parts of isooctyl acrylate, 22 parts of vinyl acetate, 28 parts of acrylamide, 30 parts of styrene, 20 parts of methyl methacrylate, 29 parts of methacrylic acid, 25 parts of diaminoethyl methacrylate, 10.7 parts of isocyanate and 18 parts of diisocyanate.
Example 3
The curved screen explosion-proof membrane is prepared by the following steps:
step 1: polyester resin and organic silicon modified polyester resin are mixed according to the mass ratio of 12: 1, mixing, adding the mixture and butanone into a solution preparation barrel, stirring for 22min, standing, and preparing a coating solution with the solid content of 58%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying at 80 ℃ to obtain the polyimide film;
and step 3: and (3) after the bonding layer and the release film are sequentially bonded, curing for 3 days at 40 ℃ to obtain the curved-surface screen explosion-proof film.
The curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 60 micrometers, an adhesive layer with the thickness of 35 micrometers and a release membrane; the surface of the polyimide film is subjected to corona treatment or acid-base treatment, the light transmittance is more than 90 percent, and the haze is less than 1 percent.
The bonding layer comprises the following components in parts by weight: 40 parts of vinyl silicone oil, 20 parts of methyl silicone oil, 45 parts of vinyl crude rubber, 2 parts of hydroxyl crude rubber, 65 parts of methyl crude rubber, 1 part of vinyl MQ resin, 40 parts of methyl MQ resin, 0.1 part of octamethylcyclotetrasiloxane, 4 parts of hydrogen-containing silicone oil and 1 part of n-hexane.
The release film comprises the following components in parts by weight: 32 parts of ethyl acrylate, 10 parts of isooctyl acrylate, 28 parts of vinyl acetate, 12 parts of acrylamide, 35 parts of styrene, 15 parts of methyl methacrylate, 32 parts of methacrylic acid, 5 parts of diaminoethyl methacrylate, 18 parts of isocyanate and 1 part of diisocyanate.
Example 4
The curved screen explosion-proof membrane is prepared by the following steps:
step 1: polyester resin and organic silicon modified polyester resin are mixed according to the mass ratio of 14: 1, mixing, adding the mixture and butanone into a solution preparation barrel, stirring for 30min, standing, and preparing a coating solution with the solid content of 48%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying at 90 ℃ to obtain the polyimide film;
and step 3: and (3) after the bonding layer and the release film are sequentially bonded, curing for 3 days at 40 ℃ to obtain the curved-surface screen explosion-proof film.
The curved screen explosion-proof membrane sequentially comprises a polyimide membrane with the thickness of 55 microns, an adhesive layer with the thickness of 35 microns and a release membrane; the surface of the polyimide film is subjected to corona treatment or acid-base treatment, the light transmittance is more than 90 percent, and the haze is less than 1 percent.
The bonding layer comprises the following components in parts by weight: 25 parts of vinyl silicone oil, 26 parts of methyl silicone oil, 37 parts of vinyl crude rubber, 9 parts of hydroxyl crude rubber, 48 parts of methyl crude rubber, 7 parts of vinyl MQ resin, 16 parts of methyl MQ resin, 0.9 part of octamethylcyclotetrasiloxane, 3 parts of hydrogen-containing silicone oil and 33 parts of normal hexane.
The release film comprises the following components in parts by weight: 20 parts of ethyl acrylate, 24 parts of isooctyl acrylate, 23 parts of vinyl acetate, 18 parts of acrylamide, 27 parts of styrene, 18 parts of methyl methacrylate, 30 parts of methacrylic acid, 25 parts of diaminoethyl methacrylate, 10.5 parts of isocyanate and 19 parts of diisocyanate.
The explosion-proof membrane prepared in the embodiment 1-4 takes the polyimide membrane as the base material of the explosion-proof membrane, the polyimide membrane has excellent heat resistance and stretchability, and the polyimide membrane is taken as the base material of the explosion-proof membrane of the curved screen, so that the requirements of the corner part of the curved structure on the tensile property and the shrinkage property of the material can be met, the problems that the PET explosion-proof membrane cannot be completely attached to the curved surface and the PET explosion-proof membrane is easy to warp after hot bending processing are solved, and the reject ratio is reduced; meanwhile, in order to ensure the bonding effect and reduce the thickness of the explosion-proof membrane and be more beneficial to the thermal bending processing of the explosion-proof membrane, the thickness of the polyimide membrane is controlled to be 45-75 mu m, and the thickness of the bonding layer is controlled to be 35 mu m; in addition, in order to improve the adhesive force of the adhesive layer on the polyimide film, the polyimide film is subjected to corona treatment or acid-base treatment in advance.
Claims (10)
1. The curved screen explosion-proof membrane is characterized by sequentially comprising a polyimide membrane with the thickness of 45-75 mu m, an adhesive layer with the thickness of 35 mu m and a release membrane.
2. The curved screen explosion-proof membrane of claim 1, wherein the bonding layer is composed of the following components in parts by weight: 15-40 parts of vinyl silicone oil, 20-35 parts of methyl silicone oil, 20-45 parts of vinyl raw rubber, 2-10 parts of hydroxyl raw rubber, 5-65 parts of methyl raw rubber, 1-12 parts of vinyl MQ resin, 15-40 parts of methyl MQ resin, 0.1-5 parts of octamethylcyclotetrasiloxane, 0.5-4 parts of hydrogen-containing silicone oil and 1-50 parts of n-hexane.
3. The curved screen explosion-proof membrane of claim 1, wherein the release film comprises the following components in parts by weight: 15-32 parts of ethyl acrylate, 10-30 parts of isooctyl acrylate, 4-28 parts of vinyl acetate, 12-33 parts of acrylamide, 15-35 parts of styrene, 15-30 parts of methyl methacrylate, 10-32 parts of methacrylic acid, 5-30 parts of diaminoethyl methacrylate, 0.5-18 parts of isocyanate and 1-30 parts of diisocyanate.
4. The curved screen explosion-proof membrane of claim 2, wherein the bonding layer is composed of the following components in parts by weight: 32 parts of vinyl silicone oil, 28 parts of methyl silicone oil, 35 parts of vinyl raw rubber, 7 parts of hydroxyl raw rubber, 43 parts of methyl raw rubber, 9 parts of vinyl MQ resin, 22 parts of methyl MQ resin, 3 parts of octamethylcyclotetrasiloxane, 3.7 parts of hydrogen-containing silicone oil and 36 parts of normal hexane.
5. The curved screen explosion-proof membrane of claim 3, wherein the release membrane is composed of the following components in parts by weight: 27 parts of ethyl acrylate, 19 parts of isooctyl acrylate, 22 parts of vinyl acetate, 28 parts of acrylamide, 30 parts of styrene, 20 parts of methyl methacrylate, 29 parts of methacrylic acid, 25 parts of diaminoethyl methacrylate, 10.7 parts of isocyanate and 18 parts of diisocyanate.
6. The curved screen explosion-proof membrane of claim 1, wherein the surface of the polyimide membrane is subjected to corona treatment or acid-base treatment, and has a light transmittance of > 90% and a haze of < 1%.
7. The method for preparing the explosion-proof membrane with the curved screen as claimed in claim 1, which is characterized by comprising the following steps:
step 1: sequentially adding polyester resin, organic silicon modified polyester resin and butanone into a liquid preparation barrel, stirring and standing to prepare a coating liquid with the solid content of 20-60%;
step 2: uniformly coating the prepared coating liquid on the surface of a polyimide film, and fully drying to obtain the polyimide film;
and step 3: sequentially attaching the adhesive layer and the release film, and curing at 40 deg.C for 2-4 days.
8. The preparation method of the curved screen explosion-proof membrane according to claim 7, wherein the mixing mass ratio of the polyester resin and the organic silicon modified polyester resin in the step 1 is 10-15: 1.
9. the preparation method of the curved screen explosion-proof membrane according to claim 7, wherein the stirring time in the step 1 is 20-40 min.
10. The method for preparing the curved screen explosion-proof membrane according to claim 7, wherein the drying temperature in the step 2 is 60-140 ℃.
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Cited By (1)
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