CN114834123A - Prevent explosion-proof high protection film that makes a video recording camera lens of cell-phone scraped - Google Patents
Prevent explosion-proof high protection film that makes a video recording camera lens of cell-phone scraped Download PDFInfo
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- CN114834123A CN114834123A CN202210535735.9A CN202210535735A CN114834123A CN 114834123 A CN114834123 A CN 114834123A CN 202210535735 A CN202210535735 A CN 202210535735A CN 114834123 A CN114834123 A CN 114834123A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
Abstract
The invention relates to the technical field of mobile phone protective films, in particular to an explosion-proof high-transmittance protective film for preventing a mobile phone camera lens from being scratched. The explosion-proof film comprises an explosion-proof layer, a film layer and an adhesive layer, wherein the film layer is attached to the upper surface of the explosion-proof layer, and the adhesive layer is attached to the lower surface of the explosion-proof layer; the film layer at least comprises the following raw materials in parts by weight: PET resin, blending resin, an intermediate, a filling material, an antifogging agent and a reinforcing agent; in the anti-explosion high-transmittance protective film for preventing the scratch of the camera lens of the mobile phone, the mobile phone film is attached to the mirror surface of the camera lens of the mobile phone, the anti-scratch effect is achieved, the thin film layer and the anti-explosion layer are attached to form a composite layer, the strength of the mobile phone film is improved, large-area broken faces cannot be generated when the mobile phone film is subjected to heavy impact, the overall anti-explosion performance is improved, the blending resin and the PET resin are mixed, the reinforcing effect is achieved, and the impact resistance of the PET resin is improved under the condition that the light transmittance is not affected.
Description
Technical Field
The invention relates to the technical field of mobile phone protective films, in particular to an explosion-proof high-transmittance protective film for preventing a mobile phone camera lens from being scratched.
Background
The mobile phone film is generally used for beautifying a mobile phone and protecting a liquid crystal display screen of the mobile phone, and as is well known, with the economic development and the continuous improvement of the living standard of people, a smart phone becomes an indispensable tool in the life of people, and the screen of the smart phone is made of glass, is fragile and not resistant to scratch, and influences the service life of the mobile phone, so that the toughened glass mobile phone film becomes a necessity.
The camera of the mobile phone is generally a relatively protruding part of the mobile phone, so that the situation of scratching and the like is relatively common, the protection of the mobile phone is generally directed to a mobile phone screen and a mobile phone shell, but the protection of the position of the camera of the protruding part is relatively less, and the long-time scratching is easy to cause the blurring of the camera and influence the use, so that the defects in the prior art are improved by an explosion-proof high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched.
Disclosure of Invention
The invention aims to provide an explosion-proof high-transmittance protective film for preventing a camera lens of a mobile phone from being scratched, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides an explosion-proof high-transmittance protective film for preventing a camera lens of a mobile phone from being scratched, which comprises an explosion-proof layer, a thin film layer and an adhesive layer, wherein the thin film layer is attached to the upper surface of the explosion-proof layer, the adhesive layer is attached to the lower surface of the explosion-proof layer, and a mobile phone film is attached to the mirror surface of a mobile phone camera, so that the light transmission effect of the camera is not influenced, and the anti-scratching effect is achieved;
the film layer at least comprises the following raw materials in parts by weight: 30-50 parts of PET resin, 10-20 parts of blending resin, 0.1-5 parts of intermediate, 10-15 parts of filling material, 0.1-0.5 part of antifogging agent and 1-3 parts of reinforcing agent.
As a further improvement of the technical scheme, the blending resin is polycarbonate resin, and the defects of poor impact property, low viscosity and the like of the PET resin can be improved by utilizing polycarbonate modified PET.
As a further improvement of the technical scheme, the intermediate at least comprises monobutyl tin oxide and an ethylene-acrylate terpolymer containing epoxy functional groups, the monobutyl tin oxide catalyzes the ester exchange of PET resin and polycarbonate resin to generate random multi-block copolyester with improved compatibility, and the ethylene-acrylate terpolymer containing the epoxy functional groups can react with terminal hydroxyl and carboxyl of the PET resin and the polycarbonate resin to improve the compatibility of the PET resin and the polycarbonate resin, improve the mechanical property of the blending modified material and improve the intrinsic viscosity of the blending modified material.
As a further improvement of the technical scheme, the filler is at least one selected from glass powder, dolomite, talcum powder, anhydrous sodium sulphate and pyrophyllite, and is used for improving the light transmittance of the mobile phone protective film and improving mechanical properties such as impact strength of the film.
As a further improvement of the technical scheme, the explosion-proof layer is prepared from PMMA resin, has high strength, does not crack even if the layer surface receives impact, and has good toughness and high light transmittance.
As a further improvement of the technical scheme, the adhesive layer is a silica gel layer prepared from silica gel molecules, the silica gel layer has the function of electrostatic adsorption, and the protective film can be attached to the surface of the mobile phone lens under the condition that an adhesive is not needed.
As a further improvement of the technical solution, the antifogging agent is at least one selected from glycerin fatty acid ester, polyethylene oxide glycerol monooleate and polyethylene oxide glycerol stearate, so as to prevent a layer of micro water drops from appearing on the surface of the protective film in a humid environment, and avoid the fuzzy atomization of the surface of the protective film, thereby affecting the light transmission.
As a further improvement of the technical scheme, the reinforcing agent is selected from glass fibers and is used for improving the strength, heat resistance, alkali corrosion resistance and the like of the film layer.
As a further improvement of the technical scheme, the preparation method of the thin film layer comprises the following steps:
s1, weighing the raw materials of the film layer for later use, and melting the PET resin and the blending resin in advance;
s2, sequentially adding the PET resin, the blending resin, the intermediate, the filler, the antifogging agent and the reinforcing agent into a reaction kettle, adding a proper amount of solvent, and uniformly stirring to obtain a film material;
and S3, adding the film material into a film blowing machine for extrusion to obtain the film layer.
As a further improvement of the technical scheme, in the S2, the processing temperature is 70-90 ℃, the stirring speed is 1200-1300r/min, and the stirring time is 20-30 min.
Compared with the prior art, the invention has the beneficial effects that:
1. in the explosion-proof high-transmittance protective film for preventing the mobile phone camera lens from being scratched, the mobile phone film is attached to the mirror surface of the mobile phone camera, so that the light transmission effect of the camera cannot be influenced, and the anti-scratch protective film has the function of preventing the mobile phone camera lens from being scratched.
2. This prevent explosion-proof high protection film that cell-phone camera lens scraped, laminate thin layer and explosion-proof layer and form the composite bed, the intensity of cell-phone membrane has been improved, make cell-phone membrane can not produce the garrulous face of large tracts of land when suffering the thumping, holistic explosion-proof nature has been improved, through mixing blending resin and PET resin, play the effect of reinforcement, under the condition that does not influence the luminousness, the shock resistance of PET resin has been improved, the laminating layer of setting is under the condition that does not adopt the adhesive, through electrostatic adsorption's effect with cell-phone membrane firmly attached on the mirror surface of cell-phone camera.
Drawings
FIG. 1 is an overall flow diagram 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 embodiment of the invention provides an explosion-proof high-transmittance protective film for preventing a camera lens of a mobile phone from being scratched, which comprises an explosion-proof layer, a thin film layer and an attaching layer, wherein the thin film layer is attached to the upper surface of the explosion-proof layer, the attaching layer is attached to the lower surface of the explosion-proof layer, and a mobile phone film is attached to the mirror surface of a mobile phone camera, so that the light transmission effect of the camera is not influenced, and the anti-scratching effect is realized;
the film layer at least comprises the following raw materials in parts by weight: 30-50 parts of PET resin, 10-20 parts of blending resin, 0.1-5 parts of intermediate, 10-15 parts of filler, 0.1-0.5 part of antifogging agent and 1-3 parts of reinforcing agent.
On the basis, in the embodiment of the invention, the blending resin is polycarbonate resin, and the defects of poor impact property, low viscosity and the like of the PET resin can be improved by utilizing the polycarbonate modified PET;
the intermediate at least comprises monobutyl tin oxide and an ethylene-acrylate terpolymer containing epoxy functional groups, wherein the monobutyl tin oxide catalyzes the ester exchange of PET resin and polycarbonate resin to generate random multi-block copolyester with improved compatibility, and the ethylene-acrylate terpolymer containing the epoxy functional groups can react with terminal hydroxyl and carboxyl of the PET resin and the polycarbonate resin to improve the compatibility of the PET resin and the polycarbonate resin, improve the mechanical property of the blending modified material and improve the intrinsic viscosity of the blending modified material;
the filling material is selected from at least one of glass powder, dolomite, talcum powder, anhydrous sodium sulphate and pyrophyllite, is used for improving the light transmittance of the mobile phone protective film and can improve the mechanical properties of the film such as impact strength and the like;
the anti-explosion layer is prepared from PMMA resin, has high strength, does not crack even if the layer surface receives impact, has good toughness and high transmittance;
the adhesive layer is a silica gel layer prepared from silica gel molecules, and the silica gel layer has the function of electrostatic adsorption, so that the protective film can be attached to the surface of the mobile phone lens under the condition that an adhesive is not needed any more;
the antifogging agent is selected from at least one of glycerin fatty acid ester, polyoxyethylene glycerol monooleate and polyoxyethylene glycerol stearate, so that a layer of micro water drops are prevented from appearing on the surface of the protective film in a humid environment, and the fuzzy atomization of the surface of the protective film is avoided, so that the light transmission is influenced;
the reinforcing agent is selected from glass fiber and is used for improving the strength, heat resistance, alkali corrosion resistance and the like of the film layer.
As shown in fig. 1, an embodiment of the present invention further provides a method for preparing one of the above anti-explosion high-transmittance protective films for preventing a camera lens of a mobile phone from being scratched, which includes the following specific steps:
1. weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding PET resin, blending resin, an intermediate, a filling material, an antifogging agent and a reinforcing agent into a reaction kettle, heating to 70-90 ℃, adding a proper amount of solvent, and uniformly stirring for 20-30min under the condition that the stirring speed is 1200-1300r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
According to the amount of different raw materials in the thin film layer, the explosion-proof high-transmittance protective film for preventing the mobile phone camera lens from being scratched is further described through the following specific embodiment.
Example 1
1. Weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 30 parts of PET resin, 10 parts of blending resin, 0.1 part of intermediate, 10 parts of filler, 0.1 part of antifogging agent and 1 part of reinforcing agent into a reaction kettle, heating to 70 ℃, adding a proper amount of solvent, and uniformly stirring for 30min under the condition that the stirring speed is 1200r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Example 2
1. Weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 35 parts of PET resin, 12.5 parts of blending resin, 2 parts of intermediate, 12 parts of filler, 0.2 part of antifogging agent and 1 part of reinforcing agent into a reaction kettle, heating to 70 ℃, adding a proper amount of solvent, and uniformly stirring for 30min at the stirring speed of 1200r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Example 3
1. Weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 40 parts of PET resin, 15 parts of blending resin, 3 parts of intermediate, 13 parts of filler, 0.3 part of antifogging agent and 2 parts of reinforcing agent into a reaction kettle, heating to 80 ℃, adding a proper amount of solvent, and uniformly stirring for 25min under the condition that the stirring speed is 1250r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Example 4
1. Weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 45 parts of PET resin, 17.5 parts of blending resin, 4 parts of intermediate, 14 parts of filler, 0.4 part of antifogging agent and 3 parts of reinforcing agent into a reaction kettle, heating to 90 ℃, adding a proper amount of solvent, and uniformly stirring for 20min under the condition that the stirring speed is 1300r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Example 5
1. Weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 50 parts of PET resin, 20 parts of blending resin, 5 parts of intermediate, 15 parts of filler, 0.5 part of antifogging agent and 3 parts of reinforcing agent into a reaction kettle, heating to 90 ℃, adding a proper amount of solvent, and uniformly stirring for 20min under the condition that the stirring speed is 1300r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the attaching layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
In order to verify that the protective film prepared by the embodiment of the invention has better light transmittance and strength, the following comparative examples are used for comparing and explaining the explosion-proof high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched.
Comparative example 1
This comparative example, using the procedure of example 3, only lacks the blend resin and intermediates, and the remainder is unchanged, the specific steps are as follows:
1. weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 40 parts of PET resin, 13 parts of filling material, 0.3 part of antifogging agent and 2 parts of reinforcing agent into a reaction kettle, heating to 80 ℃, adding a proper amount of solvent, and uniformly stirring for 25min under the condition that the stirring speed is 1250r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Comparative example 2
This comparative example, using the procedure of example 3, only lacks PET resin and intermediates, and the remainder is unchanged, the specific steps are as follows:
1. weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. adding 40 parts of blending resin, 13 parts of filling material, 0.3 part of antifogging agent and 2 parts of reinforcing agent into a reaction kettle in sequence, heating to 80 ℃, adding a proper amount of solvent, and uniformly stirring for 25min under the condition that the stirring speed is 1250r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Comparative example 3
The comparative example adopts the process of example 3, only lacks the filler, the rest is unchanged, and the specific steps are as follows:
1. weighing raw materials of the film layer for later use, and melting PET resin and blending resin in advance;
2. sequentially adding 40 parts of PET resin, 15 parts of blending resin, 3 parts of intermediate, 0.3 part of antifogging agent and 2 parts of reinforcing agent into a reaction kettle, heating to 80 ℃, adding a proper amount of solvent, and uniformly stirring for 25min under the condition that the stirring speed is 1250r/min to obtain a film material;
3. adding the film material into a film blowing machine for extrusion to obtain a film layer;
4. and finally, attaching the thin film layer to the upper surface of the explosion-proof layer, attaching the adhesion layer to the lower surface of the explosion-proof layer, and attaching a layer of transparent PET transparent film to the upper surface and the lower surface.
Comparative example 4
Compared with example 3, the film layer is prepared by only adopting 55 parts of PET resin in the invention and extruding the PET resin through a film blowing machine, and the rest is unchanged, and the specific steps are shown in step 3 and step 4 in comparative examples 1-3, and are not repeated.
Comparative example 5
Compared with example 3, the film layer is prepared by only adopting 55 parts of the blended resin in the invention and extruding the blended resin through a film blowing machine, and the rest steps are not changed, and are shown in step 3 and step 4 in comparative examples 1-3, and are not repeated here.
Test example 1
The protective films prepared in examples 1 to 5 and the protective films prepared in comparative examples 1 to 5 were subjected to optical property tests, and light transmittance and haze were measured using an electro-optical haze meter, which is specifically shown in tables 1 to 2:
TABLE 1 comparison of Process parameters for the examples and comparative examples
| PET resin (parts) | Blending resin (part) | Intermediate (part) | Filler (in parts) | Antifogging agent (powder) | Reinforcing agent (wind) | Processing temperature (. degree.C.) | Stirring conditions (r/min) | Mixing time (min) | |
| Example 1 | 30 | 10 | 0.1 | 10 | 0.1 | 1 | 70 | 1200 | 30 |
| Example 2 | 35 | 12.5 | 2 | 12 | 0.2 | 1 | 70 | 1200 | 30 |
| Example 3 | 40 | 15 | 3 | 13 | 0.3 | 2 | 80 | 1250 | 25 |
| Example 4 | 45 | 17.5 | 4 | 14 | 0.4 | 3 | 90 | 1300 | 20 |
| Example 5 | 50 | 20 | 5 | 15 | 0.5 | 3 | 90 | 1300 | 20 |
| Comparative example 1 | 55 | / | / | 13 | 0.3 | 2 | 80 | 1250 | 25 |
| Comparative example 2 | / | 55 | / | 13 | 0.3 | 2 | 80 | 1250 | 25 |
| Comparative example 3 | 40 | 15 | 3 | / | 0.3 | 2 | 80 | 1250 | 25 |
| Comparative example 4 | 55 | / | / | / | / | / | / | / | / |
| Comparative example 5 | / | 55 | / | / | / | / | / | / | / |
TABLE 2 comparison of the properties of the examples with those of the comparative examples
| Tensile strength (Mpa) | Elongation at Break (%) | Notched impact strength (MPa) | Light transmittance (%) | |
| Example 1 | 89 | 125 | 32 | 95.1 |
| Example 2 | 90 | 129 | 35 | 95.3 |
| Example 3 | 93 | 136 | 36 | 95.6 |
| Example 4 | 93 | 135 | 37 | 95.5 |
| Example 5 | 91 | 136 | 37 | 95.5 |
| Comparative example 1 | 88 | 89 | 19 | 92.3 |
| Comparative example 2 | 76 | 107 | 28 | 94.7 |
| Comparative example 3 | 87 | 123 | 31 | 91.8 |
| Comparative example 4 | 78 | 50 | 4 | 90 |
| Comparative example 5 | 61 | 90 | 20 | 93 |
As shown in tables 1 to 2, the protective films prepared in examples 1 to 5 had higher light transmittance than the protective films prepared in comparative examples 1 to 5, and the protective films of examples 1 to 5 had light transmittance of 95% or more, and the elongation at break and notched impact strength of the protective films were greatly reduced in the absence of the blend resin and the intermediate in comparative example 1, and the tensile strength, elongation at break and notched impact strength of the protective films were significantly reduced in the absence of the PET resin and the intermediate in comparative example 2, and the indices were reduced to a smaller extent in the absence of the filler in comparative example 3, and the tensile strength, elongation at break and notched impact strength of the protective films were reduced to different extents in comparative example 4 and comparative example 5 when the protective films were supported only with the PET resin or the blend resin, therefore, the protective film prepared by the invention has better strength and light transmittance;
the PET resin and the polycarbonate resin are both resin materials with higher light transmittance, and the transparency of the material prepared by mixing the two resins is not reduced due to blending, and meanwhile, the compatibility of the two resins is improved under the action of an intermediate, so that the mechanical property of the mixed material is further improved, and a complementary effect is achieved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and the present invention is not limited to the embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a prevent explosion-proof high protection film that cell-phone camera lens scraped, its characterized in that: the explosion-proof film comprises an explosion-proof layer, a film layer and an adhesive layer, wherein the film layer is attached to the upper surface of the explosion-proof layer, and the adhesive layer is attached to the lower surface of the explosion-proof layer;
the film layer at least comprises the following raw materials in parts by weight: 30-50 parts of PET resin, 10-20 parts of blending resin, 0.1-5 parts of intermediate, 10-15 parts of filling material, 0.1-0.5 part of antifogging agent and 1-3 parts of reinforcing agent.
2. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the blended resin is a polycarbonate resin.
3. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the intermediate at least comprises monobutyl tin oxide and ethylene-acrylate terpolymer containing epoxy functional groups.
4. The anti-explosion high-transparency protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the filler is at least one selected from glass powder, dolomite, talcum powder, anhydrous sodium sulphate and pyrophyllite.
5. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the explosion-proof layer is prepared from PMMA resin.
6. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the laminating layer is a silica gel layer prepared from silica gel molecules.
7. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the antifogging agent is at least one selected from glycerin fatty acid ester, polyoxyethylene glycerol monooleate and polyoxyethylene glycerol stearate.
8. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the reinforcing agent is selected from glass fibers.
9. The anti-explosion high-transmittance protective film for preventing the camera lens of the mobile phone from being scratched according to claim 1, which is characterized in that: the preparation method of the film layer comprises the following steps:
s1, weighing the raw materials of the film layer for later use, and melting the PET resin and the blending resin in advance;
s2, sequentially adding the PET resin, the blending resin, the intermediate, the filler, the antifogging agent and the reinforcing agent into a reaction kettle, adding a proper amount of solvent, and uniformly stirring to obtain a film material;
and S3, adding the film material into a film blowing machine for extrusion to obtain the film layer.
10. The explosion-proof high-transparency protective film for preventing the camera lens of the mobile phone from being scratched according to claim 9, which is characterized in that: in the S2, the processing temperature is 70-90 ℃, the stirring speed is 1200-1300r/min, and the stirring time is 20-30 min.
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| CN202210535735.9A CN114834123A (en) | 2022-05-18 | 2022-05-18 | Prevent explosion-proof high protection film that makes a video recording camera lens of cell-phone scraped |
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| CN202210535735.9A CN114834123A (en) | 2022-05-18 | 2022-05-18 | Prevent explosion-proof high protection film that makes a video recording camera lens of cell-phone scraped |
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