Matt extra-black light-absorbing thin film material, manufacturing method and coating method of matte extra-black light-absorbing thin film material

Abstract

The invention discloses a matte extra-black light-absorbing thin film material, a manufacturing method and a coating method thereof, the matte extra-black light-absorbing thin film material comprises a base film, the upper surface of the base film is coated with a matte extra-black light-absorbing coating layer, and the lower surface of the base film is adhered with a tearable release film through a back adhesive layer; wherein the matte extra-black light-absorbing coating is composed of UV resin, carbon black, matting powder, a dispersing agent, an initiator and other components, the matte extra-black light-absorbing coating can be pasted on the surface of an optical device during use, operation is easy, the situation that other parts, not needing light absorption, of the device are sprayed due to improper spraying, and the optical device is scrapped is avoided, and the production cost is reduced. The light source device is attached to the surface of the light device in a pasting mode and has the advantage of being easy to operate. Wherein the PET or PI film is used as the base film, so that different temperature resistance requirements can be met.

Description

Technical Field

[0001] The present invention relates to the technical field related to light-absorbing materials, and in particular to a matte ultra-black light-absorbing film material, a production method and a coating method thereof. Background Art

[0002] Optical instruments, such as head-up displays, light barriers, sun hoods, laser radars, etc. When traditional coatings are used on these optical devices, they are sprayed on the surface of the device. However, this coating is easy to fall off after a period of use and needs to be sprayed later. If there is a lack of professional spraying equipment in the later stage, it is easy to spray on other parts of the device that do not need to absorb light, which can easily cause the optical device to be scrapped. Summary of the invention

[0003] In order to solve the problems in the prior art that the coating is easy to fall off after being used for a period of time, and spraying is required at a later stage, and when there is a lack of professional spraying equipment at a later stage, it is easy to spray other parts of the device that do not need light absorption, which easily causes the optical device to be scrapped; and the existing coating has the defect of too long drying time, resulting in low production efficiency, the present invention provides a matte extra black light-absorbing film material, a production method and a coating method thereof.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention discloses a matte black light-absorbing film material, comprising a base film, the upper surface of which is coated with a matte black light-absorbing coating layer, and the lower surface of which is adhered with a tearable release film via a back adhesive layer.

[0006] As a preferred technical solution of the present invention, the base film is a PET film or a PI film.

[0007] A method for producing a matte black light-absorbing film material is used to produce the above-mentioned matte black light-absorbing film material, and is characterized by comprising the following steps:

[0008] Step 1: Preparation of matte black light-absorbing paint:

[0009] Step 2: Apply the prepared matte black light-absorbing coating on the upper surface of the base film by roller coating or comma coating;

[0010] Step 3: Dry the film through a specific film drying mechanism. After drying the film, use a gloss meter to measure the gloss of the reflected light at an angle of 85 degrees, and the gloss is less than 1 degree;

[0011] Step 4: Use a winding device to wind up the matte black light-absorbing film.

[0012] As a preferred technical solution of the present invention, the preparation method of the matte black light-absorbing coating in the step 1 is that the matte black light-absorbing coating is composed of the following components by mass: 45-50 parts of an organic main agent, 10-15 parts of a polyester resin, 4-6 parts of carbon black, 2-3 parts of a matting powder, 0.5-1 parts of a dispersant, 0.3-0.5 parts of an initiator, and 20-40 parts of a functional nanomaterial. First, the carbon black is put into the UV resin and stirred under the action of a stirrer at a stirring speed of 1000 laps / minute for 10 minutes, and then the matting powder, dispersant, initiator and other ingredients are put into the stirrer for high-speed stirring at a stirring speed of 2000 laps / minute for 15 minutes; the organic main agent is at least one of polyurethane, ammonium polyacrylate, polyvinyl acetate resin, and polyvinyl alcohol, and the functional nanomaterial is any one or more of carbon nanotubes, fullerenes, multi-walled carbon tubes, carbon aerogels, and hollow carbon spheres.

[0013] As a preferred technical solution of the present invention, the dry film mechanism includes a hood, a plurality of hot air cavities are arranged inside the hood from one end to the other, a suction cavity is arranged between adjacent hot air cavities, a suction fan is arranged on the top of the hood, and the air inlet end of the suction fan is connected with each of the suction cavities via an air duct, and a suction port is provided at the bottom of the suction cavity, and a plurality of heating lamps are installed at the bottom of the hood, an air heater is installed in each of the hot air cavities, a blower is arranged on the top of the hood, and the air inlet end of the blower is connected with each of the hot air cavities via a duct, and an air outlet is provided at the bottom of each hot air cavity.

[0014] As a preferred technical solution of the present invention, the heating temperature of the air heater increases in the order in which the films pass, and the temperature rise gradient is 3 degrees Celsius. The highest heating temperature of the air heater at the end is 50 degrees Celsius.

[0015] As a preferred technical solution of the present invention, a plurality of lifting support feet are provided at the bottom of the wind hood.

[0016] As a preferred technical solution of the present invention, a dust filter cartridge is provided at the air inlet end of the blower.

[0017] A coating method for coating a material manufactured by the above-mentioned method for manufacturing a matte black light-absorbing film material, wherein the coating method comprises adding a curing agent to the matte black light-absorbing coating to obtain a mixed coating; placing the mixed coating in a spraying device, and controlling the pressure in the spray gun to be 6 to 7 kg / cm 2 , spray the mixed coating in an atomized form onto the surface of the object to be sprayed to obtain a coating film; dry the coating film at a temperature of 60-70 degrees Celsius for 30-55 minutes.

[0018] The beneficial effects of the present invention are:

[0019] 1. The matte black light-absorbing film material is coated with a matte black light-absorbing coating layer on the upper surface of the base film, and the lower surface of the base film is adhered with a tearable release film through the adhesive layer, so that it can be pasted to the surface of the optical device when used, which is easy to operate and avoids spraying other parts of the device that do not need to absorb light due to improper spraying, causing the optical device to be scrapped. The present invention is attached to the surface of the optical device by pasting, which has the characteristics of easy operation. Among them, PET or PI film is used as the base film, which can meet different temperature resistance requirements.

[0020] 2. The production method of the matte black light-absorbing film material comprises an organic main agent, carbon black, matting powder, a dispersant, an initiator and other ingredients, wherein UV resin and carbon black are the main components, and carbon black is used for dyeing. The organic main agent is used as the main component, and it has a micro-nano structure and a micro-nano porous morphology, and a large specific surface area, which is conducive to its absorption / elimination of stray light, and the matting powder is used to reduce the coating gloss, so that the surface of the matte black light-absorbing coating layer is rougher.

[0021] 3. The present invention also dries the coating applied on the base film by setting up a specific drying film mechanism, wherein a plurality of hot air chambers are arranged inside the wind hood from one end to the other end, and there is an air suction chamber between adjacent hot air chambers, so that hot air is blown to the surface of the base film through the hot air chamber, and then the exhaust gas generated in the drying process is adsorbed through the air suction chamber, thereby avoiding a large amount of volatilization to the outside and causing pollution to the surrounding working environment, and the heating temperature of the air heater is increased in sequence according to the order in which the films pass, and the temperature increase gradient is 3 degrees Celsius, and the heating temperature of the air heater at the end is as high as 70 degrees Celsius, so that gradient drying is performed to avoid sudden shrinkage of the coating due to sudden heating, which may cause cracking of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of a matte black light-absorbing film material of the present invention;

[0025] Figure 2 It is a schematic flow chart of a method for producing a matte ultra-black light-absorbing thin film material according to the present invention;

[0026] Figure 3It is a structural schematic diagram of a dry film mechanism in a method for producing a matte ultra-black light-absorbing thin film material according to the present invention;

[0027] Figure 4 The present invention is a schematic diagram of the internal structure of a wind hood in a method for producing a matte ultra-black light-absorbing film material.

[0028] In the figure: 1. Base film; 2. Matte black light-absorbing coating layer; 3. Adhesive layer; 4. Release film; 5. Wind hood; 6. Hot air chamber; 7. Suction chamber; 8. Suction fan; 9. Suction port; 10. Heating lamp; 11. Air heater; 12. Blower; 13. Air outlet; 15. Dust filter cartridge. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0030] Example: Figure 1 As shown, a matte black light-absorbing film material of the present invention comprises a base film 1, the upper surface of the base film 1 is coated with a matte black light-absorbing coating layer 2, and the lower surface of the base film 1 is adhered with a tearable release film 4 via a back adhesive layer 3, and the base film 1 is a PET film or a PI film.

[0031] The present invention is characterized in that a matte black light-absorbing coating layer 2 is coated on the upper surface of a base film 1, and a tearable release film 4 is adhered to the lower surface of the base film 1 through a back adhesive layer 3, so that it can be pasted to the surface of an optical device when in use, which is easy to operate and avoids the optical device being scrapped due to improper spraying and spraying on other parts of the device that do not need to absorb light. The present invention is attached to the surface of the optical device by pasting, which is easy to operate. Wherein a PET or PI film is used as the base film 1, different temperature resistance requirements can be met.

[0032] Among them, a method for producing a matte black light-absorbing film material is used to produce the above-mentioned matte black light-absorbing film material, such as Figure 2 As shown, the following steps are included:

[0033] Step 1: Preparation of matte black light-absorbing paint:

[0034] Step 2: Apply the prepared matte black light-absorbing coating on the upper surface of the base film by roller coating or comma coating;

[0035] Step 3: Dry the film through a specific film drying mechanism. After drying the film, use a gloss meter to measure the gloss of the reflected light at an angle of 85 degrees, and the gloss is less than 1 degree;

[0036] Step 4: Use a winding device to wind up the matte black light-absorbing film.

[0037] The preparation method of the matte black light-absorbing coating in step 1 is as follows: the matte black light-absorbing coating is composed of the following components by mass: 45-50 parts of an organic main agent, 10-15 parts of a polyester resin, 4-6 parts of carbon black, 2-3 parts of a matting powder, 0.5-1 parts of a dispersant, 0.3-0.5 parts of an initiator, and 20-40 parts of a functional nanomaterial. First, the carbon black is put into the UV resin and stirred under the action of a stirrer at a stirring speed of 1000 rpm for 10 minutes. Then, the matting powder, the dispersant, the initiator and other components are put into the stirrer for high-speed stirring at a stirring speed of 2000 rpm for 15 minutes. The organic main agent is at least one of polyurethane, ammonium polyacrylate, polyvinyl acetate resin, and polyvinyl alcohol, and the functional nanomaterial is any one or more of carbon nanotubes, fullerenes, multi-walled carbon tubes, carbon aerogels, and hollow carbon spheres. By setting up an organic main agent, polyester resin, matting powder, dispersant, initiator and other ingredients, wherein the organic main agent and carbon black are the main components, and carbon black is used for dyeing, wherein the organic main agent is used as the main component, and has a micro-nano structure, and has a micro-nano porous morphology, a large specific surface area, which is conducive to its role in absorbing / eliminating stray light, and the matting powder is used to reduce the coating gloss, so that the surface of the matte extra black light-absorbing coating layer is rougher.

[0038] Among them, Figure 3 and Figure 4As shown, the dry film mechanism includes a hood 5, wherein a plurality of hot air chambers 6 are arranged inside the hood 5 from one end to the other end, and a suction chamber 7 is arranged between the adjacent hot air chambers 6, and a suction fan 8 is arranged at the top of the hood 5, and the air inlet end of the suction fan 8 is connected with each of the suction chambers 7 via an air guide pipe, and a suction port 9 is provided at the bottom of the suction chamber 7, and a plurality of heating lamps 10 are installed at the bottom of the hood 5, and an air heater 11 is installed in each of the hot air chambers 6, and a blower 12 is arranged at the top of the hood 5, and the air inlet end of the blower 12 is connected with each of the hot air chambers 6 via a duct, and an air outlet 13 is provided at the bottom of each of the hot air chambers 6. The heating temperature of the air heater 11 increases in sequence according to the order in which the film passes, and the temperature rise gradient is 3 degrees Celsius, and the heating temperature of the air heater 11 at the end is the highest at 50 degrees Celsius. The coating applied on the base film is dried by setting up a specific drying film mechanism, wherein a plurality of hot air chambers 6 are arranged inside the wind hood 5 from one end to the other, and a suction chamber 7 is arranged between adjacent hot air chambers 6, so that hot air is blown toward the surface of the base film through the hot air chamber 6, and then the exhaust gas generated in the drying process is adsorbed through the suction chamber 7, so as to avoid large-scale volatilization to the outside and pollution to the surrounding working environment, and the heating temperature of the air heater 11 is increased in sequence according to the order in which the films pass, and the temperature increase gradient is 3 degrees Celsius, and the heating temperature of the air heater 11 at the end is as high as 70 degrees Celsius, so as to perform gradient drying, so as to avoid sudden shrinkage of the coating due to sudden heating, which may cause cracking of the coating.

[0039] The bottom of the wind hood 5 is provided with a plurality of lifting support feet, so that the height of the wind hood can be adjusted conveniently, so as to facilitate docking with different equipment. The air inlet end of the blower 12 is provided with a dust filter cartridge 15. The present invention has a light absorption rate of 400-1530nm for visible light and infrared light, and is as high as 0.97±0.01 in a wide spectrum range. It can be used for system components where optical components need to eliminate stray light, to avoid the refracted projection light source being absorbed by the coating and dispersing part of the display light source when it is reflected due to insufficient blackness and matteness of the substrate, making the projected data blurred and unclear.

[0040] A coating method is used to coat the material manufactured by the above-mentioned method for producing a matte black light-absorbing film material. The coating method is to add a curing agent to the matte black light-absorbing coating to obtain a mixed coating; put the mixed coating into a spraying device, and control the pressure in the spray gun to be 6 to 7 kg / cm 2 , spray the mixed coating in an atomized form onto the surface of the object to be sprayed to obtain a coating film; dry the coating film at a temperature of 60-70 degrees Celsius for 30-55 minutes.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A matte black light-absorbing film material, characterized in that: It comprises a base film (1), the upper surface of which is coated with a matte black light-absorbing coating layer (2), and the lower surface of which is adhered with a tearable release film (4) via a back adhesive layer (3).

2. The matte black light-absorbing film material according to claim 1, characterized in that: The base film (1) is a PET film or a PI film.

3. A method for producing a matte black light-absorbing film material, used for producing a matte black light-absorbing film material as claimed in claim 1 or 2, characterized in that: The following steps are involved: Step 1: Preparation of matte black light-absorbing paint: Step 2: coating the prepared matte black light-absorbing coating on the upper surface of the base film (1) by roller coating or comma coating; Step 3: Dry the film through a specific film drying mechanism. After drying the film, use a gloss meter to measure the gloss of the reflected light at an angle of 85 degrees, and the gloss is less than 1 degree; Step 4: Use a winding device to wind up the matte black light-absorbing film.

4. The method for producing a matte black light-absorbing film material according to claim 3, characterized in that: The preparation method of the matte black light-absorbing coating in the step 1 is that the matte black light-absorbing coating is composed of the following components by mass: 45-50 parts of an organic main agent, 10-15 parts of a polyester resin, 4-6 parts of carbon black, 2-3 parts of a matting powder, 0.5-1 parts of a dispersant, 0.3-0.5 parts of an initiator, and 20-40 parts of a functional nanomaterial. First, the carbon black is put into the UV resin and stirred under the action of a stirrer at a stirring speed of 1000 rpm for 10 minutes. Then, the matting powder, the dispersant, the initiator and other components are put into the stirrer for high-speed stirring at a stirring speed of 2000 rpm for 15 minutes. The organic main agent is at least one of polyurethane, ammonium polyacrylate, polyvinyl acetate resin, and polyvinyl alcohol, and the functional nanomaterial is any one or more of carbon nanotubes, fullerenes, multi-walled carbon tubes, carbon aerogels, and hollow carbon spheres.

5. The method for producing a matte black light-absorbing film material according to claim 3, characterized in that: The dry film mechanism comprises a hood (5), wherein a plurality of hot air chambers (6) are arranged inside the hood (5) from one end to the other end, and an air suction chamber (7) is arranged between adjacent hot air chambers (6), and a suction fan (8) is arranged at the top of the hood (5), and the air inlet end of the suction fan (8) is connected with each of the air suction chambers (7) via an air guide pipe, and an air suction port (9) is provided at the bottom of the air suction chamber (7), and a plurality of heating lamps (10) are installed at the bottom of the hood (5), and an air heater (11) is installed in each of the hot air chambers (6), and a blower (12) is arranged at the top of the hood (5), and the air inlet end of the blower (12) is connected with each of the hot air chambers (6) via a duct, and an air outlet (13) is provided at the bottom of each of the hot air chambers (6).

6. The method for producing a matte black light-absorbing film material according to claim 5, characterized in that: The heating temperature of the air heater (11) increases in sequence according to the order in which the films pass through, and the temperature increase gradient is 3 degrees Celsius. The highest heating temperature of the air heater (11) at the end is 70 degrees Celsius.

7. The method for producing a matte black light-absorbing film material according to claim 5, characterized in that: A plurality of lifting support feet are provided at the bottom of the wind cover (5).

8. The method for producing a matte black light-absorbing film material according to claim 5, characterized in that: The air inlet end of the blower (12) is provided with a dust filter cartridge (15).

9. A coating method for coating a material manufactured by the method for manufacturing a matte ultra-black light-absorbing thin film material according to any one of claims 5 to 8, characterized in that: The coating method comprises adding a curing agent to the matte black light-absorbing paint to obtain a mixed paint; placing the mixed paint in a spraying device, and controlling the pressure in the spray gun to be 6 to 7 kg / cm 2 , spray the mixed coating in an atomized form onto the surface of the object to be sprayed to obtain a coating film; dry the coating film at a temperature of 60-70 degrees Celsius for 30-55 minutes.

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