CN109232941B - Light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and preparation method thereof - Google Patents

Light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and preparation method thereof Download PDF

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CN109232941B
CN109232941B CN201710397960.XA CN201710397960A CN109232941B CN 109232941 B CN109232941 B CN 109232941B CN 201710397960 A CN201710397960 A CN 201710397960A CN 109232941 B CN109232941 B CN 109232941B
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heat
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贺建芸
苑会林
杨卫民
丁玉梅
何红
张景慧
佟金戈
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Beijing University of Chemical Technology
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    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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Abstract

The invention provides a light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and a preparation method thereof. The light conversion heat preservation permanent hydrophilic anti-fogging multifunctional polymer film consists of a film body and a hydrophilic photosensitive coating, wherein the film body or/and the hydrophilic photosensitive coating at least comprise one of a light conversion agent and a heat preservation agent. The preparation method of the light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film comprises the following steps: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent, heat preservation agent and processing aid in proportion to obtain the multifunctional coating to be coated; (2) and coating the multifunctional coating on the surface of the polymer film, and irradiating and curing by a light source to obtain the antifogging light-converting heat-insulating multifunctional polymer film. The invention solves the problem that the existing agricultural film can not have the functions of light conversion, heat preservation and droplet prevention at the same time, and prepares the polymer film with multifunction, high efficiency, durability and high mechanical strength.

Description

Light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and preparation method thereof
Technical Field
The invention relates to the field of polymer film surface modification, in particular to a light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and a preparation method thereof.
Background
According to the characteristic that the plant growth depends on photosynthesis, the agricultural film of the greenhouse is expected to have the functions of heat preservation, light conversion, droplet prevention and the like besides high light transmittance. Because the illumination wave band that plant photosynthesis efficiency is the biggest has certain scope, improve the wave band illumination intensity in this scope and can improve crops output, also can adjust the wave band that the agricultural film sees through the light in addition and reach the purpose of control nutrient composition content, promote the quality of agricultural product. The red light and the blue light in the sunlight are important for the photosynthesis of plants, but the ultraviolet light is easy to promote the aging of the plants, induce the occurrence of plant diseases and insect pests in soil and are harmful to the growth of the plants; light of other bands does not undergo photosynthesis.
The existing light conversion agricultural film can convert harmful ultraviolet light into red light or blue light which is beneficial to plant growth, promotes photosynthesis of plants, is applied to the aspects of planting vegetables, fruits, cotton, rice, soybeans and the like, and is found to achieve the effects of increasing both production and income and improve the quality of products to a certain extent.
In some areas, especially in northern areas, the climate is cold, the temperature difference between day and night is large, and agricultural films with good heat preservation effects are needed. The heat preservation agent is added into the agricultural film, so that infrared rays emitted by the ground or crops are reflected at night under the condition that light transmission in the daytime is not influenced, and the heat preservation effect is achieved.
In the existing technology for manufacturing agricultural films, the agricultural films cannot simultaneously have antifogging, light conversion and heat preservation capabilities, and are poor in comprehensive usability, low in universality and poor in durability.
Disclosure of Invention
In view of the problems in the background art, the invention aims to provide a light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film and a preparation method thereof, solves the problem that the existing agricultural film cannot have the functions of light conversion, heat preservation and anti-fogging, and prepares a multifunctional, efficient and durable polymer film with high mechanical strength.
In order to achieve the purpose, the invention provides a light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film which consists of a film body and a hydrophilic photosensitive coating, wherein the film body or/and the hydrophilic photosensitive coating at least comprise one of a light conversion agent and a heat preservation agent.
Further, the film body is a single-layer film or a multi-layer composite film.
Further, the film body at least comprises one of polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polymethyl methacrylate, polycarbonate, polyurethane, polyvinyl chloride and ethylene-vinyl acetate copolymer.
Further, the hydrophilic coating is composed of hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator and processing aid.
Further, the hydrophilic photosensitive resin at least comprises one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate, amino acrylate and organic silicon acrylate.
Further, the light conversion agent at least comprises one of fluorescein sodium, acridine yellow, fluorescent yellow YG-51, 4, 8-dimethyl-7 carboxyl coumarin, acridine red and fluorescent red GG.
Further, the heat preservation agent at least comprises one of talcum powder, kaolin, calcium carbonate, clay, hydrotalcite, diatomite and glass beads.
In order to achieve the above object, the present invention provides a method for preparing the above light-converting heat-preserving permanently hydrophilic anti-fogging multifunctional polymer film, comprising the steps of: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent, heat preservation agent and processing aid in proportion to obtain the multifunctional coating to be coated; (2) and coating the multifunctional coating on the surface of the polymer film, and irradiating and curing by a light source to obtain the antifogging light-converting heat-insulating multifunctional polymer film.
In order to achieve the above object, the present invention provides a method for preparing the above light-converting heat-preserving permanently hydrophilic anti-fogging multifunctional polymer film, comprising the steps of: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator and processing aid in proportion to obtain a hydrophilic coating to be coated; (2) uniformly mixing a light conversion agent, a heat preservation agent and polymer resin, granulating by using an extruder to obtain light conversion heat preservation functional master batches, adding the functional master batches into the polymer resin, and processing into a light conversion heat preservation type polymer film; (3) and coating the hydrophilic coating on the surface of the light conversion heat preservation type polymer film, and irradiating and curing by a light source to obtain the antifogging light conversion heat preservation multifunctional polymer film.
In order to achieve the above object, the present invention provides a method for preparing the above light-converting heat-preserving permanently hydrophilic anti-fogging multifunctional polymer film, comprising the steps of: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent and processing aid in proportion to obtain light conversion hydrophilic coating to be coated; (2) uniformly mixing a heat preservation agent and polymer resin, granulating by using an extruder to obtain heat preservation functional master batches, adding the functional master batches into the polymer resin, and processing into a heat preservation polymer film; (3) and coating the light conversion hydrophilic coating on the surface of the heat preservation type polymer film, and irradiating and curing by a light source to obtain the antifogging light conversion heat preservation multifunctional polymer film.
According to the invention, the light conversion agent and the heat preservation agent are added into the film body and/or the hydrophilic photosensitive coating, and the hydrophilic photosensitive coating is coated on the surface of the film body and is irradiated by the light source to form the hydrophilic coating firmly combined with the surface of the polymer film, so that the polymer film not only has the functions of efficient and long-term light conversion, heat preservation and hydrophilicity, but also has high mechanical strength and good durability.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
The light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film consists of a film body and a hydrophilic photosensitive coating, wherein the film body or/and the hydrophilic photosensitive coating at least comprise one of a light conversion agent and a heat preservation agent. The invention may comprise a plurality of alternative embodiments, exemplified but not limited to the following, all of which are within the scope of the invention. In one embodiment, the multifunctional polymer film consists of a film body and a hydrophilic photosensitive coating, wherein the film body comprises a light conversion agent and a heat preservation agent. In one embodiment, the multifunctional polymer film is composed of a film body and a hydrophilic photosensitive coating, wherein the hydrophilic photosensitive coating comprises a light conversion agent and a heat preservation agent. In one embodiment, the multifunctional polymer film is composed of a film body and a hydrophilic photosensitive coating, wherein the film body and the hydrophilic photosensitive coating both comprise a light conversion agent and a heat preservation agent.
The film body is a single-layer film or a multi-layer composite film.
The film body at least comprises one of polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polymethyl methacrylate, polycarbonate, polyurethane, polyvinyl chloride and ethylene-vinyl acetate copolymer.
The hydrophilic coating is composed of hydrophilic photosensitive resin, hydrophilic photosensitive monomers, a photoinitiator and a processing aid.
The hydrophilic photosensitive resin at least comprises one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate, amino acrylate and organic silicon acrylate.
The light conversion agent at least comprises one of fluorescein sodium, acridine yellow, fluorescent yellow YG-51, 4, 8-dimethyl-7 carboxyl coumarin, acridine red and fluorescent red GG.
The heat insulating agent at least comprises one of talcum powder, kaolin, calcium carbonate, clay, hydrotalcite, diatomite and glass beads.
The preparation method of the light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film comprises the following steps: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent, heat preservation agent and processing aid in proportion to obtain the multifunctional coating to be coated; (2) and coating the multifunctional coating on the surface of the polymer film, and irradiating and curing by a light source to obtain the antifogging light-converting heat-insulating multifunctional polymer film.
The preparation method of the light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film comprises the following steps: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator and processing aid in proportion to obtain a hydrophilic coating to be coated; (2) uniformly mixing a light conversion agent, a heat preservation agent and polymer resin, granulating by using an extruder to obtain light conversion heat preservation functional master batches, adding the functional master batches into the polymer resin, and processing into a light conversion heat preservation type polymer film; (3) and coating the hydrophilic coating on the surface of the light conversion heat preservation type polymer film, and irradiating and curing by a light source to obtain the antifogging light conversion heat preservation multifunctional polymer film.
The preparation method of the light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film comprises the following steps: (1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent and processing aid in proportion to obtain light conversion hydrophilic coating to be coated; (2) uniformly mixing a heat preservation agent and polymer resin, granulating by using an extruder to obtain heat preservation functional master batches, adding the functional master batches into the polymer resin, and processing into a heat preservation polymer film; (3) and coating the light conversion hydrophilic coating on the surface of the heat preservation type polymer film, and irradiating and curing by a light source to obtain the antifogging light conversion heat preservation multifunctional polymer film.
According to the invention, the light conversion agent and the heat preservation agent are added into the film body and/or the hydrophilic photosensitive coating, and the hydrophilic photosensitive coating is coated on the surface of the film body and is irradiated by the light source to form the hydrophilic coating firmly combined with the surface of the polymer film, so that the polymer film not only has the functions of efficient and long-term light conversion, heat preservation and hydrophilicity, but also has high mechanical strength and good durability.
The present invention will be described in detail with reference to the following examples, which illustrate the present invention.
Example 1
Firstly, mixing waterborne polyurethane acrylic resin, trimethylolpropane triacrylate (TMPTA), benzophenone, sodium fluorescein, 5000-mesh kaolin, polydimethylsiloxane, acrylate flatting agent and active nano-silica powder according to the proportion of 100:30:9:2.5:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain the multifunctional coating;
then coating the multifunctional coating on the polyethylene film subjected to corona treatment by a roller coating process, wherein the thickness of the coating is 10 mu m;
finally, the polyethylene film coated with the multifunctional coating is irradiated by a high-pressure mercury lamp, and the irradiation energy is 116mJ/cm2And obtaining the antifogging light-conversion heat-preservation polyethylene film with the multifunctional coating firmly adhered to the polyethylene film.
Example 2
Firstly, mixing acrylic resin, dipentaerythritol hexaacrylate, 2, 4-dihydroxy benzophenone, acridine yellow, 5000-mesh talcum powder, polydimethylsiloxane, acrylate flatting agent and active nano titanium dioxide powder according to the ratio of 100:30:9:1:7:0.4:0.8, mixing for 20min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain the multifunctional coating;
then coating the multifunctional coating on the linear polyethylene film after plasma treatment by a spraying process, wherein the thickness of the coating is 5 mu m;
finally, a xenon lamp is used for irradiating and coating the polyethylene film of the multifunctional coating, and the irradiation energy is 130mJ/cm2And obtaining the antifogging light-conversion heat-preservation film with the multifunctional coating firmly adhered to the linear polyethylene film.
Example 3
Firstly, mixing epoxy acrylate resin, trimethyl ammonium chloride methacrylate, benzophenone, acridine red, 4000-mesh glass beads, polydimethylsiloxane, acrylate flatting agent and active nano calcium carbonate powder according to the ratio of 100:30:9:3:5:7:0.4:0.8, mixing for 30min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain the multifunctional coating;
then coating the multifunctional coating on the linear low-density polyethylene-ethylene terephthalate-linear low-density polyethylene three-layer composite film subjected to chemical etching treatment by a dip coating process, wherein the thickness of the composite film is 8 mu m;
finally, the composite film of the multifunctional coating is irradiated and coated by a metal halogen lamp, and the irradiation energy is 120mJ/cm2And obtaining the antifogging light-conversion heat-preservation composite film with the multifunctional coating firmly adhered to the composite film.
Example 4
Firstly, mixing amino acrylate resin, trimethylolpropane triacrylate (TMPTA), benzophenone, 4, 8-dimethyl-7 carboxyl coumarin, 5000-mesh calcium carbonate, polydimethylsiloxane, acrylate leveling agent and active nano-silica powder according to the proportion of 100:30:9:2.5:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain the multifunctional coating;
then coating the multifunctional paint on an ethylene-vinyl acetate copolymer film by a blade coating process, wherein the thickness of the film is 3 mu m;
finally, irradiating and coating the ethylene-vinyl acetate copolymer film of the multifunctional coating by using a UV-LED lamp, wherein the irradiation energy is 108mJ/cm2And obtaining the antifogging light-conversion heat-preservation polyethylene film with the multifunctional coating firmly adhered to the ethylene-vinyl acetate copolymer film.
Example 5
Firstly, mixing waterborne polyurethane acrylic resin, trimethylolpropane triacrylate (TMPTA), benzophenone, sodium fluorescein, polydimethylsiloxane, acrylate flatting agent and active nano-silica powder according to the proportion of 100:30:9:2:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain a light conversion coating;
mixing waterborne polyurethane acrylic resin, trimethylolpropane triacrylate (TMPTA), benzophenone, 5000-mesh kaolin, polydimethylsiloxane, acrylate leveling agent and active nano-silica powder according to the proportion of 100:30:9:2.5:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain a heat-insulating coating;
then coating the light conversion coating on one polyethylene surface of the polyethylene-EVA composite film subjected to corona treatment by a tape casting process, wherein the thickness of the light conversion coating is 5 micrometers; coating the heat-insulating coating on the EVA surface of the polyethylene film by a tape casting process, wherein the thickness of the heat-insulating coating is 5 mu m;
finally, two surfaces of the polyethylene film are irradiated by an electrodeless lamp, and the irradiation energy is 140mJ/cm2And obtaining the antifogging light-conversion heat-preservation polyethylene-EVA composite film with the multifunctional coating firmly adhered to the polyethylene film.
Example 6
Firstly, mixing waterborne polyurethane acrylic resin, trimethylolpropane triacrylate (TMPTA), benzophenone, sodium fluorescein, polydimethylsiloxane, acrylate flatting agent and active nano-silica powder according to the proportion of 100:30:9:2:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain a light conversion coating;
100 parts of low-density polyethylene and 0.5 part of white oil in parts by mass are mixed in a high-speed mixer at 1000 rpm for 10 minutes, after uniform mixing, 20 parts of 5000-mesh kaolin is added, the mixture is continuously mixed for 10 minutes until uniform mixing is achieved, and a co-rotating double-screw extruder is meshed for granulation to obtain the heat-insulating master batch. Mixing the heat preservation master batch and the low-density polyethylene according to the ratio of 20:100, and then extruding and forming to obtain a heat preservation type low-density polyethylene film with the thickness of 0.4 mm;
then coating the light conversion coating on one surface of the heat-preservation type low-density polyethylene film subjected to corona treatment by a tape casting process, wherein the thickness of the light conversion coating is 5 micrometers;
finally, the surface of the film is irradiated by an electrodeless lamp, and the irradiation energy is 140mJ/cm2And obtaining the antifogging light-converting heat-insulating low-density polyethylene film.
Example 7
Firstly, mixing waterborne polyurethane acrylic resin, trimethylolpropane triacrylate (TMPTA), benzophenone, 5000-mesh kaolin, polydimethylsiloxane, acrylate leveling agent and active nano-silica powder according to the proportion of 100:30:9:1:7:0.4:0.8, mixing for 10min in a high-speed mixer until the mixture is uniform, and vacuumizing and defoaming to obtain a light conversion coating;
according to the mass ratio of 100: weighing low-density polyethylene, white oil and fluorescein sodium at a ratio of 0.5:10, mixing the weighed materials in a high-speed mixer at 1000 rpm for 10 minutes, meshing a co-rotating double-screw extruder for granulation to obtain light conversion master batches, mixing the light conversion master batches with the low-density polyethylene at a ratio of 20:100, and extruding and molding the mixture to obtain a light conversion type low-density polyethylene film with the thickness of 0.4 mm;
then coating the heat-preservation coating on one surface of the corona-treated heat-preservation low-density polyethylene film by a tape casting process, wherein the thickness of the heat-preservation coating is 5 micrometers;
finally, the surface of the film is irradiated by an electrodeless lamp, and the irradiation energy is 140mJ/cm2And obtaining the antifogging light-converting heat-insulating low-density polyethylene film.
Comparative example 1
The procedure of example 1 was repeated except that the multifunctional paint contained no sodium fluorescein and no kaolin of 5000 mesh.
Comparative example 2
The procedure of example 1 was repeated, except that the multifunctional paint contained no sodium fluorescein.
Comparative example 3
The procedure was as in example 1 except that the multifunctional paint did not contain 5000 mesh kaolin.
Performance testing
1. And (3) temperature testing: making a square frame with the side length of 1 meter, covering a film to be tested, irradiating a 100w incandescent lamp at a distance of 1 meter for 12 hours, turning off the lamp, standing for 12 hours in the dark, and testing the temperature value inside and outside the film.
2. Light transmittance: rapidly scanning and detecting the light transmittance (%) by using an Shimadzu UV-2501PC ultraviolet-visible spectrophotometer, wherein the width (band pass) of a slit is 5nm, and the wavelength range is 200-800 nm; the sample film is flat and vertical and is placed on a sample rack, and the detection light source vertically passes through the sample film.
3. Sustained water contact angle (hydrophilic)
And (3) soaking the sample in deionized water for 100h, completely drying, dripping 4 microliters of deionized water on the surface of the sample, and measuring by using a contact angle measuring instrument at the temperature of 20-25 ℃.
4. Placing a durable film sample in a test box, wherein the temperature is 60 ℃, and the xenon lamp irradiation is carried out, and the power is 0.5W/square meter;
water spraying: spraying water for 12 hours, and alternately spraying water for 12 hours without spraying water; after 1 week, the test shows that the light transmittance, the temperature difference inside and outside the film, the continuous water contact angle and other performances are not lower than 95 percent and are taken as the qualified standard.
5. Tensile strength and elongation at break
According to the test conditions for films and sheets, part 3 of the national Standard "determination of tensile Properties of plastics" (GB \ T1040.3-2006): the dumbbell specimens have a length of 150mm, a narrow parallel width of 10mm, a drawing speed of 50mm/min and a room temperature of 25 ℃.
The test results obtained above are shown in table 1.
TABLE 1 Properties of light-converting, heat-insulating, permanently hydrophilic, anti-fogging multifunctional Polymer films
Figure BDA0001308963660000091
As can be seen from the test results of the examples and the comparative examples shown in Table 1, the multifunctional polymer film adopting the light conversion heat preservation permanent hydrophilic anti-fogging drops of the invention has low ultraviolet transmittance and relatively high blue-violet light transmittance and red light transmittance beneficial to plant growth, thereby improving the crop yield; the temperature difference between the inside and the outside of the film is large, which shows that the heat preservation effect is good, is beneficial to plant growth and can be expanded to cold areas for use; through durability tests, all performance indexes are not lower than 95% of the original value, which shows that the durability is good and all functions have long effective periods; in addition, the film has high mechanical strength and good durability.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (6)

1. A light-conversion heat-preservation permanent hydrophilic anti-fogging multifunctional polymer film is composed of a film body and a hydrophilic photosensitive coating, and is characterized in that the hydrophilic photosensitive coating at least comprises one of a light conversion agent and a heat preservation agent;
the film body at least comprises one of polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polymethyl methacrylate, polycarbonate, polyurethane, polyvinyl chloride and ethylene-vinyl acetate copolymer;
the hydrophilic photosensitive resin at least comprises one of polyurethane acrylate, polyester acrylate, epoxy acrylate, polyether acrylate, amino acrylate and organic silicon acrylate;
the film body is subjected to polarization treatment, wherein the polarization treatment is corona, plasma or chemical etching.
2. The light-converting heat-insulating permanently hydrophilic anti-fogging multifunctional polymer film according to claim 1, wherein the film body is a single-layer film or a multi-layer composite film.
3. The light-converting, heat-insulating, permanently hydrophilic, anti-fogging multifunctional polymer film of claim 1, wherein the light-converting agent comprises at least one of fluorescein sodium, acridine yellow, fluorescein YG-51, 4, 8-dimethyl-7 carboxyl coumarin, acridine red, fluorescein red GG.
4. The light-converting heat-insulating permanently hydrophilic anti-fogging multifunctional polymer film according to claim 1, wherein said heat-insulating agent comprises at least one of talc, kaolin, calcium carbonate, clay, hydrotalcite, diatomaceous earth, glass beads.
5. The method for preparing a light-converting heat-preserving permanent hydrophilic anti-fogging multifunctional polymer film according to any one of claims 1 to 4, comprising the steps of:
(1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent, heat preservation agent and processing aid in proportion to obtain the multifunctional coating to be coated;
(2) coating the multifunctional coating on the surface of the polymer film subjected to polarity treatment, and irradiating and curing by a light source to obtain an antifogging light-converting heat-insulating multifunctional polymer film;
the polarity treatment is corona, plasma or chemical etching.
6. The method for preparing a light-converting heat-preserving permanent hydrophilic anti-fogging multifunctional polymer film according to any one of claims 1 to 4, comprising the steps of:
(1) mixing hydrophilic photosensitive resin, hydrophilic photosensitive monomer, photoinitiator, light conversion agent and processing aid in proportion to obtain light conversion hydrophilic coating to be coated;
(2) uniformly mixing a heat preservation agent and polymer resin, granulating by using an extruder to obtain heat preservation functional master batches, adding the functional master batches into the polymer resin, and processing into a heat preservation polymer film;
(3) coating the light conversion hydrophilic coating on the surface of the heat preservation type polymer film subjected to polarity treatment, and irradiating and curing by a light source to obtain an antifogging light conversion heat preservation multifunctional polymer film;
the polarity treatment is corona, plasma or chemical etching.
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