KR20220154370A - Agricultural film absorbing infrared ray with excellent anti-fogging and manufacturing method of the same - Google Patents

Abstract

The present invention relates to an agricultural film comprising a conjugated polymer, a wetting agent, and a binder, and a manufacturing method thereof. The agricultural film according to the present invention can absorb the light in an infrared region to minimize a temperature difference between the inside and outside of the film, has excellent anti-drip properties, and exhibits relatively low transmittance and high light absorption in the near-infrared region to exhibit an excellent heat retention effect. In addition, an agricultural thermal barrier film according to the present invention is formed of a cured product of a solution containing the conjugated polymer such that the agricultural film can be manufactured through a simple wet coating process without specific equipment, such as sputtering, thereby simplifying the manufacturing method to reduce a process cost.

Description

Agricultural film absorbing infrared ray with excellent anti-fogging and manufacturing method of the same}

The present invention relates to an agricultural film comprising a conjugated polymer, a wetting agent and a binder, and a method for manufacturing the same.

Solar rays are largely divided into ultraviolet rays, visible rays, and infrared rays, and infrared rays are further divided into near-infrared rays and far-infrared rays. Of these, UV rays make up about 6%, visible rays about 46%, and infrared rays about 48%. UV rays cause skin aging and cancer when the skin is exposed for a long time, and infrared rays increase the indoor temperature. This causes an increase in cooling costs in the summer.

In general, agricultural films used for cultivating crops have excellent visible light transmittance, but have difficulties in cultivating crops due to heat because they are difficult to prevent transmission of infrared or ultraviolet rays. In addition, if infrared rays are simply blocked to prevent transmission of infrared rays, the external temperature of the film increases significantly, while the internal temperature rises relatively little, and condensation may occur due to the difference in temperature between the inside and outside of the film.

In addition, agricultural films used in vinyl houses may cause water droplets to form on the surface of the film, thereby impairing the transmittance of sunlight or causing water droplets to fall on crops. Currently, in order to solve this problem, the film is coated with a surfactant type anti-drop agent to lower the surface tension to show invincibility, but it has not reached the desired level.

Therefore, there is a need for a film that can minimize the temperature difference between the inside and outside of the film and has excellent anti-drip property due to a hydrophilic surface and can be used for agricultural purposes.

An object of the present invention is to provide a film having excellent anti-drip properties, which can prevent condensation by absorbing infrared heat to minimize the temperature difference between the inside and outside of the film, and allows water droplets to flow down without forming on the surface.

In addition, it is intended to provide a film that can be manufactured at a low cost because it is cheaper than oxides or dyes, which are materials of existing agricultural films, and can be manufactured with a simple process.

The present invention, a conjugated polymer; fluorine-based wetting agents; It provides an agricultural film formed of a cured product of a solution containing; a polyurethane binder and at least one binder of a polyester binder.

In addition, the present invention, a conjugated polymer; fluorine-based wetting agents; And polyurethane binder and at least one binder of a polyester binder; provides a method for producing an agricultural film comprising the step of curing a solution containing.

The agricultural film according to the present invention has a high absorption rate of light in the infrared region, can minimize the temperature difference between the inside and outside of the film, and can exhibit an excellent anti-drip effect that allows water droplets to flow down well. In addition, it exhibits relatively low transmittance and high light absorption in the near-infrared region, thereby exhibiting excellent heat retention and heat blocking effect.

Furthermore, it exhibits high light transmittance in the visible ray region and low light transmittance in the near-infrared region, so that additional dyes, metal oxides, and ceramics are not required to adjust the optical properties in the existing visible and infrared regions. It uses relatively inexpensive materials.

Moreover, since the agricultural film according to the present invention is formed of a cured product of a solution containing a conjugated polymer, a wetting agent and a binder, it can be manufactured through a simple wet coating process without specific equipment such as sputtering, so the manufacturing method is simple Thus, the process cost can be lowered, and a large-area coating process is possible.

1 is a graph showing the temperature change over time of the film surface temperature and the temperature inside the box of the film according to the presence or absence of Example 1 in <Experimental Example 1>.
2 is a diagram showing an experimental method and apparatus performed in <Experimental Example 1>.
Figure 3 is a graph showing the light transmittance measured using an FT-IR spectrometer of the film according to the presence or absence of Example 1 confirmed in <Experimental Example 3>.
Figure 4 is a view showing the water contact angle of the film surface according to the presence or absence of Example 1 in <Experimental Example 4> ((a) is a commercial surfactant-type anti-oil agent and (b) is Example 1).
5 is a view showing the water contact angle of the film surface in <Experimental Example 5>. ((a) is a PO film coated with a commercial oil repellent, (b) is a PO film coated with P(EDOT/Ani):PSS (c) is a PO film coated with Comparative Example 2, (d) is a PO film coated with Example 2, and (e) is a PO film coated with Example 1. )

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In the present invention, the term "comprises" or "has" is intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, the present invention will be described in detail.

The researched agricultural film for thermal blocking in the infrared region was fabricated in the form of a multilayer structure made of dyes, metal oxides, and ceramics to adjust optical properties in the visible and near infrared regions. However, when the dye is used, the durability of the film is weak, and the film made of metal oxide interferes with the transmission and reception of ambient electromagnetic waves. In addition, the film made of ceramic has disadvantages in that the process is complicated and the unit price is high.

In addition, agricultural films studied to exhibit anti-drip property are coated with a surfactant-type oil repellent, but the degree may not reach a desirable level and the optical properties cannot be adjusted.

Therefore, in the present invention, by including a conjugated polymer, a wetting agent and a binder, it can absorb light in the infrared region, have invincibility, and maintain high light transmittance in the visible ray region while maintaining a high transmittance in the near infrared region. Provided is an agricultural film capable of exhibiting thermal insulation and thermal insulation effects.

In addition, since the agricultural film according to the present invention is formed of a cured product of a solution containing a conjugated polymer, it can be manufactured through a simple wet coating process without specific equipment such as sputtering, so the manufacturing method is simple and the process cost is reduced. It has the advantage of being lower.

For example, the present invention,

conjugated polymers; It is possible to provide an agricultural film formed of a cured product of a solution containing a wetting agent and a binder.

For example, the conjugated polymer is polythiophene, polyalkalthiophene, polyaniline, polyfluorene, polyparaphenylenevinylene, polyphenylene, polyparaphenylene, polydialkylfluorene, polyfluorenebenzo thiadiazole and one or more of their derivatives.

As an example, the agricultural film according to the present invention is PEDOT:PSS (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)) and/or P(EDOT/Ani):PSS as a conjugated polymer. (Poly(3,4-ethylenedioxythiophene/aniline):poly(styrenesulfonate)). More preferably, P(EDOT/Ani):PSS may be included. P(EDOT/Ani):PSS may be prepared by adding an EDOT monomer to a PSS solution to perform a first oxidation polymerization reaction, and adding an aniline monomer to a prepared PEDOT:PSS solution to perform a second polymerization reaction.

In one embodiment of the present invention, the conjugated polymer may be 65 to 75% by weight of the total film solution (a solution containing a conjugated polymer; a fluorine-based wetting agent; and at least one of a polyurethane binder and an acrylic binder) weight have.

In the agricultural film of the present invention, the wetting agent is a fluorine-based wetting agent, and any material containing a fluorine group may be used without limitation.

Specifically, the fluorine-based wetting agent may be an anionic, cationic, or nonionic fluorine-based wetting agent, and may have a perfluoroalkyl group, a ω-hydrofluoroalkyl group, and the like.

As a more specific example, the fluorine-based wetting agent may include a C _n F _2n+1 perfluorinated aliphatic group (where n is 3 to 20) and may additionally include a hydroxyl group.

In one embodiment of the present invention, the fluorine-based wetting agent may be nonionic and have a pH of 6 to 9.

Specific examples of fluorine-based wetting agents include Capstone FS-31 (trade name) available from Chemours and SEIMI CHEMICAL CO. LTD. Sulflon KC-4O (trade name) available from In addition, the fluorine-based wetting agent may have a fluorine content of 2 to 40%, preferably 5 to 30%.

In the present invention, only one type of fluorine-based wetting agent may be used, or two or more types may be used in combination.

In one aspect of the present invention, the wetting agent may be 0.05 to 1% by weight, preferably 0.1 to 0.5% by weight, based on the total weight of the film. When the humectant is included in the above weight range, the hydrophilicity of the surface of the film may be increased to improve anti-drip property.

The fluorine-based wetting agent controls the surface tension during coating so that it can be uniformly coated even on a PO film having a general hydrophobic surface that has not been pretreated with a primer, and can improve anti-drip property by maintaining excellent hydrophilicity after coating.

Meanwhile, the binder may be one or more of a polyurethane binder and a polyester binder.

As the polyurethane binder, any polyurethane obtained by reacting an isocyanate and a polyol well known in the art may be used without limitation. The isocyanate may include at least one of aliphatic diisocyanate, aromatic diisocyanate, modified isocyanate, and polymeric isocyanate. The polyol may include at least one of diol or triol polyether polyol, polyester polyol, polycarbonate polyol, polycaprolactone polyol, and polybutadiene polyol.

As the polyester binder, any polyester obtained by reacting a dicarboxylic acid compound and a polyol compound known in the art may be used without limitation. The dicarboxylic acid compound may include an aliphatic dicarboxylic acid compound and an aromatic dicarboxylic acid compound, and the polyol compound may also include an aliphatic polyol compound and an aromatic polyol compound.

The polyester binder of the present invention introduces a hydrophilic functional group (for example, one or two or more hydrophilic functional groups such as a sulfonic acid metal base, a carboxyl group, an ether group, and a phosphoric acid group) into a water-dispersible polyester, such as a polymer. It may be a polyester.

In one aspect of the invention, the polyurethane binder may be nonionic and have a pH of 5 to 7. In one aspect of the invention, the polyester binder may be an anionic polyester acrylate binder.

Specific examples of the polyurethane binder may include HU-YS 002 manufactured by Handok Industry, and specific examples of the polyester binder may include pesresin A-645GH manufactured by Takamatsu Oil & Fat.

In one aspect of the present invention, the binder may include only one of a polyurethane binder and a polyester binder, and may include both a polyurethane binder and a polyester binder.

In one aspect of the present invention, the binder may be 25 to 35% by weight based on the total weight of the film.

One or more of the polyurethane binder and the polyester binder may secure excellent durability to the external environment of the agricultural film.

The agricultural film according to the present invention can realize excellent infrared absorption, visible light transmission, invincibility, and heat retention effects only with a single-layer structure formed of a conjugated polymer, and additional dyes, metal oxides, and ceramics previously used in agricultural films. It is not required to form a multi-layered structure using a material or the like.

In the agricultural film of the present invention, transmittance in the visible ray region and blocking rate in the near-infrared ray region can be selectively controlled according to the thickness of the coated film. The thickness of the coated film is preferably 1um to 5um.

In the film according to the present invention, the film itself can absorb light in the infrared region, in particular, in the near infrared region (780 to 2700 nm). Accordingly, it is possible to prevent dew condensation by minimizing the temperature difference between the inside and outside of the coating film by not only blocking light in the near-infrared region that damages crops, but also absorbing it.

In one specific embodiment of the present invention, the agricultural film according to the present invention may satisfy the following general formula 1.

[Formula 1]

| T _{chamber internal temperature} - T _{film surface temperature} | ≤ 15℃

In the above general formula 1,

The T _{chamber internal temperature} is the chamber internal temperature after irradiating the box coated with agricultural film with light in the 780-2700 nm wavelength range for 30 minutes to 3 hours, and the T _{film surface temperature} is the 780-2700 nm wavelength range in the chamber coated with agricultural film This is the surface temperature of the film after being irradiated with light for 30 minutes to 3 hours.

Equation 1 shows the temperature difference between the inside and outside of the film after a certain period of time for light in the near-infrared region, for the agricultural film according to the present invention. For example, when the chamber coated with the agricultural film is irradiated with light in the near-infrared region, the difference between the temperature of the surface of the film and the temperature inside the chamber is 15 ° C. or less, preferably 12 ° C. or less, more preferably 10 ° C. or less, most preferably 8°C or less.

In another specific embodiment of the present invention, the agricultural film according to the present invention, 400 to 1400 cm ^-1 upon FT-IR analysis of the wave number, The absorbance may be 43% or more. Preferably, the light absorption amount may be 43% to 90%, 43% to 80%, 45% to 75%, 50 to 75%, or 55 to 75%. This indicates that the agricultural film according to the present invention can absorb a large amount of light in the infrared region.

In one embodiment of the present invention, the agricultural film according to the present invention has a transmittance of 80% or more, or 85% or more in the visible light region, but a blocking rate in the infrared region (780 to 2700 nm) may be 20% to 30% .

In a specific embodiment of the present invention, the agricultural film according to the present invention may have a transmittance of 55% or less to light in a wavelength range of 2300 nm to 2500 nm. Preferably, transmittance for light in the wavelength range of 2300 nm to 2500 nm may be 1 to 55% or less, 10 to 50% or less, or 15 to 50% or less. In another specific embodiment of the present invention, transmittance for light in the wavelength range of 1000 nm to 2000 nm may be 80% or less. Alternatively, transmittance to light in a wavelength range of 780 nm to 1000 nm may be 80% or less, 75% or less, or 70% or less. Accordingly, not only can light in the wavelength range of the near-infrared region be blocked, but also a warming effect can be exhibited inside the film.

The film according to the present invention may also exhibit excellent anti-drip properties by including a wetting agent and a binder in addition to the conjugated polymer.

In one specific embodiment of the present invention, the agricultural film according to the present invention may have a contact angle of 25 ° or less with respect to distilled water. Preferably, the contact angle may be 23˚, 20˚, or 18˚ or less, and may be 1˚, 3˚ or 5˚ or more.

In another specific embodiment of the present invention, the agricultural film according to the present invention may have a contact angle of 18 ° or less after 5 to 20 seconds after dropping the distilled water. Preferably, the contact angle may be 15˚, 12˚, or 11˚ or less, and may be 1˚, 3˚ or 5˚ or more.

Hereinafter, the formable form of the agricultural film according to the present invention will be described.

As an example, the agricultural film according to the present invention may be formed into a single-layer structure that is a cured product of a solution containing only a conjugated polymer, a wetting agent, and a binder. Through this, it can be seen that an excellent thermal barrier effect can be implemented with a single-layer structure formed only of conjugated polymers without the need to form a multi-layer structure using additional dyes, metal oxides, and ceramics for adjusting existing optical properties. have.

As another example, the agricultural film according to the present invention may include a light-transmitting substrate and may have a laminated structure with the substrate. For example, the light-transmitting substrate includes at least one of a polyester-based resin, an acrylic-based resin, a cellulose-based resin, a polyolefin-based resin, a polyvinyl chloride-based resin, a polycarbonate-based resin, a phenol-based resin, and a urethane-based resin can do.

As another example, the agricultural film according to the present invention includes a conjugated polymer and a synthetic resin, and the conjugated polymer and the synthetic resin are formed as a cured product of a solution included in a weight ratio of 1:5 to 1:20. It can be. For example, the weight ratio of the conjugated polymer to the synthetic resin is 1:8 to 1:20, 1:10 to 1:20, 1:12 to 1:20, 1:12 to 1:18, or 1:15 to 1:15. It may be in the 1:18 range. In this case, the manufacturing cost of the agricultural film can be reduced.

For example, the synthetic resin is ethylene vinyl acetate copolymer, low density polyethylene, linear low density polyethylene, polyvinyl chloride, ethylene/ethyl acrylate copolymer, ethylene/methyl acrylate copolymer, ethylene/butyl acrylate copolymer, ethylene /hexene copolymer and ethylene/vinyl acetate copolymer.

As one example of the manufacturing method of the agricultural film,

It is possible to provide a method for producing an agricultural film comprising curing a solution containing a conjugated polymer, a fluorine-based wetting agent, and at least one binder selected from a polyurethane binder and a polyester binder.

In one embodiment of the present invention, preparing a solution containing a conjugated polymer prior to the curing step; and homogenizing after diluting the solid content of the solution containing the conjugated polymer.

In one specific embodiment of the present invention, in the step of preparing a solution containing the conjugated polymer, the conjugated polymer may be P(EDOT/Ani):PSS, and polystyrenesulfonic acid and 3,4-ethylenedioxyty It may proceed in a two-step reaction in which the aniline monomer is reacted after reacting the opene monomer.

In one specific embodiment of the present invention, the step of homogenizing after diluting the solid content is to dilute the solid content of the solution containing the conjugated polymer to lower the concentration of the solid content, and then homogenizer to obtain particles of a uniform size It may be a homogenization step. More specifically, the concentration of the solid content may be diluted to 1.0 to 1.6% by weight, and homogenization may be performed with a homogenizer No. 1 to No. 4 at 500 to 1500 bar.

A fluorine-based wetting agent and at least one binder selected from a polyurethane binder and a polyester binder were added to the homogenized solution, and the solution was coated and cured by drying.

At this time, since the coating method can be performed through a simple method as described above, the manufacturing process is simple and does not require a separate additive for absorbing near-infrared rays other than the conjugated polymer, the wetting agent and the binder, so in terms of economy can be excellent

Here, the specific details of the wetting agent and the binder to be added are as described in the agricultural film section.

Hereinafter, the present invention will be described in more detail through examples and the like according to the present invention, but the scope of the present invention is not limited by the examples presented below.

Example

Preparation Example 1: Preparation of P(EDOT/Ani):PSS

After dissolving 85 ml of polystyrene sulfonic acid (PSS) in 1200 ml of distilled water, the mixture was stirred for 2 hours. Here, inert nitrogen was injected and bubbled for 60 minutes, and 5 ml of EDOT (3,4-ethylenedioxythiophene) monomer as the first monomer was added dropwise to the PSS solution. After further stirring for 10 minutes, 22 g of sodium persulfate and 0.16 g of iron(III) sulfate as an oxidizing agent were added at room temperature and reacted for 23 hours. At various time intervals, 5 ml of aniline was added dropwise as a second monomer, and a mixed ion exchange resin in which a cation exchange resin and an anion exchange resin were mixed in a ratio of 2:1 was placed at room temperature for 1 hour to remove unnecessary ions to obtain P (EDOT/Ani ):PSS solution was prepared.

Preparation Example 2: Preparation of the film solution of Example 1

The solid content of the prepared P(EDOT/Ani):PSS solution was diluted to a concentration of 1.2%. 100 g of the prepared 1.2% P(EDOT/Ani):PSS solution was homogenized twice at 1000 bar using a homogenizer, and left for 10 minutes to cool the heat generated in the process. 40 g of a polyester binder was added to 100 g of the homogenized solution, and 0.4% by weight of a fluorine-based wetting agent based on the added solution was added. After stirring for 30 minutes, a 10-minute defoaming process was performed.

Here, pesresin A-645GH manufactured by Takamatsu Oil & Fat was used as the polyester binder, and Capstone FS-31 manufactured by Chemours was used as the fluorine-based wetting agent.

Preparation Example 3: Preparation of the film solution of Example 2

The film solution of Example 2 was prepared in the same manner as in Preparation Example 2, except that the weight range of the wetting agent was changed from 0.4% by weight to 0.1% by weight.

Preparation Example 4: Preparation of film solution of Comparative Example 2

A film solution of Comparative Example 2 was prepared in the same manner as in Preparation Example 2, except that the wetting agent was changed to ethoxylated acetylenic gemini surfactant.

Experimental Example 1: Measurement of IR heat absorption of agricultural films

Example 1 was coated on the base PO film using a bar coater (wet film thickness: 11.43um), and dried at 75° C. for 2 minutes to prepare a film. Here, the base PO film was Comparative Example 1. After covering one side of a 300 mm X 210 mm X 150 mm dark box with the prepared agricultural film of Example 1 and a commercial PO film sample, a thermometer was placed inside the dark box and on the surface of the film. The infrared lamp used in this experiment was a Philips product (IR 250 RH IR2), and the distance between the dark box and the infrared lamp was approximately 500 mm. A photograph of the experiment progress is shown in FIG. 2 , and the results are shown in FIG. 1 .

As shown in Figure 1, not only the internal and external temperature change of the box covered with the film according to Example 1 is relatively small, but also the temperature difference between the inside of the box and the surface of the film is small, so that dew condensation can be prevented.

Specifically, in the case of Comparative Example 1, the surface temperature of the film was 53 °C 1 hour after irradiation with the infrared lamp, the temperature inside the box was 82 °C, and the temperature difference between the inside and the surface of the film was about 29 °C. In the case of the film coated with Example 1, the temperature of the film surface was 62 ° C. 1 hour after irradiation with the infrared lamp, the temperature inside the box was 69 ° C., and the temperature difference between the inside and the surface of the film was about 7 ° C. Compared to the PO film, Example 1 had a smaller temperature difference between the inner and outer surfaces of the film and a smaller temperature change inside the box.

Experimental Example 2: FT-IR measurement of agricultural film

Example 1 was coated on the base PO film using a bar coater (wet film thickness: 11.43um), and dried at 75° C. for 2 minutes to prepare a film. Here, the base PO film was Comparative Example 1. Here, through the FT-IR spectrum, the transmittance and absorbance of the films of Comparative Example 1 and Example 1 for light energy of 1400 to 400 cm ^-1 were measured, and are shown in Table 1 below.

Sample Warming area (1400~400 cm ^-1 ) Transmittance (%) Absorbance (%) Comparative Example 1 57.7 42.3 Example 1 55.6 44.4

As shown in Table 1, since it can be confirmed that the film coated with Example 1 has a lower transmittance and a higher absorbance than Comparative Example 1, it can be seen that Example 1 increases the near-infrared absorption rate.

Experimental Example 3: Measurement of light transmittance of agricultural film

Example 1 was coated on the base PO film using a bar coater (wet film thickness: 11.43um), and dried at 75° C. for 2 minutes to prepare a film. Here, the base PO film was Comparative Example 1. Then, each prepared cured coating film was prepared as a sample in a size of 70 mm in width and height. The optical properties of each of the agricultural film samples thus prepared were measured using an FT-IR spectrometer. The results are shown in Figure 3.

It can be seen that the agricultural film according to Example 1 has high transmittance to light in the visible ray region and low transmittance to light in the near-infrared region.

In addition, it can be seen that the film of Example 1 has generally lower light transmittance in the infrared region than the base PO film, and has excellent heat retention due to the high absorbance in the infrared region as seen in Experimental Examples 1 and 2 above.

Experimental Example 4: Measurement of contact angle of agricultural film

Example 1 was coated on the base PO film using a bar coater (wet film thickness: 11.43um), and dried at 75° C. for 2 minutes to prepare a film. In order to evaluate the anti-drip property of Example 1, distilled water was added dropwise onto the base PO film coated with a commercial silicone-based surfactant type oil repellent agent and the film of Example 1, and then the contact angle was measured using a contact angle meter. .

As a result, in the case of a commercial silicone-based surfactant type anti-drop agent, the contact angle is 28.82 °, but in the case of the film of Example 1, the contact angle is 15.79 °, so it can be confirmed that Example 1 has excellent anti-drip property.

Experimental Example 5: Measurement of contact angle of agricultural film according to the type of wetting agent

The solutions according to Examples 1 and 2, Comparative Example 2, and Preparation Example 1 were coated on the base PO film using a bar coater (wet film thickness: 11.43 um), and dried at 75° C. for 2 minutes to prepare a film. After adding distilled water dropwise to the film surface, the contact angle was measured using a contact angle meter. Specifically, the contact angle was measured immediately after the dropwise addition (immediately after the DI-water drop) and after 10 seconds of the dropwise addition (after the drop of 10 seconds).

Figure 5 (a) is a PO film coated with a commercial oil repellent, Figure 5 (b) is a PO film coated with Preparation Example 1, Figure 5 (c) is a PO film coated with Comparative Example 2 Coated, FIG. 5 (d) is a PO film coated with Example 2, FIG. 5 (e) is a PO film coated with Example 1.

Example 1 was 10.9˚ and 9.5˚ immediately after the addition of distilled water and 10 seconds after the dropwise addition, respectively, and Example 2 was 24.3˚ and 9.8˚, respectively.

In addition, the films of Examples 1 and 2 both have a lower contact angle immediately after and after 10 seconds of addition than the commercial surfactant-type oil repellent, Comparative Example 2, and Production Example 1, and have excellent anti-drip properties. can confirm that

Claims (11)

conjugated polymers; fluorine-based wetting agents; And at least one binder of a polyurethane binder and a polyester binder; an agricultural film formed of a cured product of a solution containing a. According to claim 1,
An agricultural film in which the weight range of the fluorine-based wetting agent relative to the total film weight is 0.05 to 1.0% by weight. According to claim 1,
An agricultural film that satisfies the following general formula 1:
[Formula 1]
| T _{chamber internal temperature} - T _{film surface temperature} | ≤ 15℃
In the above general formula 1,
The T _{chamber internal temperature} is the internal temperature of the chamber after irradiating the chamber coated with agricultural film with light in the 780-2700 nm wavelength range for 30 minutes to 3 hours, and the T _{film surface temperature} is the 780-2700 nm wavelength range in the chamber coated with agricultural film This is the surface temperature of the film after being irradiated with light for 30 minutes to 3 hours. According to claim 1,
400 to 1400 cm ^-1 wave number upon FT-IR analysis, an agricultural film having an absorbance of 43% or more. According to claim 1,
Agricultural film with a contact angle of less than 25˚ for distilled water. According to claim 1,
An agricultural film having a contact angle of 18˚ or less after 5 to 20 seconds after dropping distilled water. According to claim 1,
An agricultural film having a transmittance of 55% or less to light in a wavelength range of 2300 nm to 2500 nm. According to claim 1,
Among the conjugated polymers are polythiophene, polyaniline, polyfluorene, polyparaphenylenevinylene, polyphenylene, polyparaphenylene, polydialkylfluorene, polyfluorenebenzothiadiazole, and derivatives thereof. An agricultural film containing at least one kind. According to claim 1,
The fluorine-based wetting agent is a nonionic agricultural film having a pH of 6 to 9. conjugated polymers; fluorine-based wetting agents; And A polyurethane binder and at least one binder of a polyester binder; A method for producing an agricultural film comprising the step of curing a solution containing a. According to claim 10,
Preparing a solution containing a conjugated polymer before the curing step; and homogenizing after diluting the solid content of the solution containing the conjugated polymer.

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