KR102574880B1 - Heat-generating funtional mulching mats containing light-heating particles - Google Patents

Abstract

The present invention relates to a functional heating mulching mat comprising photo-heating particles. The heating functional mulching mat containing photo-heating particles according to the present invention provides excellent heating performance due to the action of absorbing light energy from sunlight and artificial light sources through the characteristics of photo-heating particles and converting it into heat energy, The heat-generating particles are uniformly dispersed and the thermal conductivity is improved, thereby providing a continuous heat-generating effect at an overall uniform temperature. In addition, the heating functional mulching mat of the present invention has the advantage of easy drainage and air permeability through pores existing inside the flat yarn fabric.

Description

Heat-generating funtional mulching mats containing light-heating particles}

The present invention relates to a functional heating mulching mat containing light-heating particles. More specifically, the present invention relates to a heating functional mulching mat containing photo-heating particles, manufactured using a flat yarn weaving technology, using the principle that photo-heating particles absorb light energy of sunlight or visible light and generate heat. will be.

Mulching means covering the ground with 　leaves, 　stalks, straw, film, etc. of crops. In general, mulching is a work that is frequently performed in farmhouses for smooth crop cultivation. It not only reduces the amount of pesticides and herbicides used by preventing the transmission of pathogens in the soil and the germination of weeds, but also prevents moisture evaporation, maintenance of geothermal temperature, and soil erosion and loss. various effects can be obtained.

Mulching mat is a material used in agriculture for the purpose of maintaining soil temperature and moisture and suppressing the growth of weeds other than cultivated crops. In addition, it also performs a function of preventing muddy water from being buried on the leaves of crops by rain or sprinkler-type irrigation or preventing the inflow of various diseases and pests.

The most widely used mulching material for conventional mulching mats is a soft film made of synthetic resin materials such as polyolefin and polyvinyl chloride (PVC, Polyvinyl Chloride). there was. In order to solve these problems, a mulching fabric using a non-woven fabric was introduced, but due to its thick thickness, it was bulky, did not have high durability, and had little effect on keeping warm.

In addition, it is known to cover crops with a thermal cover and use thermal curtains at a certain height to save energy, and aluminum sheets and polyurethane foam are used for this purpose, but separate facilities are required. Cost issues such as having to be installed are large, and there are disadvantages in that sunlight is blocked.

In agricultural fields, many crops require heating both daytime and nighttime during the winter season, and various materials and devices for heat preservation, insulation, and heating are used. However, energy consumption in the agricultural sector is continuously increasing. In order to solve the problems such as the above heating cost, agricultural materials capable of reducing heating costs are required.

Republic of Korea Patent Publication No. 10-2007-0120652 (2007.12.26.)

The present invention was developed to improve the above problems, reducing heating energy in winter, controlling the rapid temperature change of the soil due to daily temperature difference through the formation of an air layer inside the flat yarn fabric, and controlling the soil through the pores of the fabric tissue structure It is an object of the present invention to provide a functional heating mulching mat containing light-heating particles, which prevents pooling of water and facilitates ventilation and drainage.

Another object of the present invention is to establish optimal light-heating particle content and spinning conditions that do not cause problems with the durability of flat yarn, and thereby improve the growth environment of crops by controlling the degree of heat generated by light. and contribute to saving heating energy.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

In order to achieve the above object, the present invention provides a functional heating mulching mat comprising a polymeric resin and particles having a light heating function therein.

In one embodiment of the present invention, the heat generating functional mulching mat of the present invention is characterized in that the light-heating particles are uniformly dispersed inside the polymeric resin.

In one embodiment of the present invention, the light-heating particles are at least one selected from particles having various light-heating functions, such as metal oxides, carbon compounds, thermally conductive polymers, and photocatalysts.

In one embodiment of the present invention, the metal oxide of the light-heating particles is selected from the group consisting of fluorine-doped tin oxide (FTO), indium tin oxide, and aluminum-doped zinc oxide (AZO). is more than one

In one embodiment of the present invention, the carbon compound of the light heating particles is carbon black, graphite, graphene oxide, carbon fiber powder, carbon nanotubes, carbonization It is at least one selected from the group consisting of zirconium carbide and graphene.

In one embodiment of the present invention, the photocatalyst of the photo-heating particles is graphene, manganese dioxide (MnO 2 ), silicon dioxide (SiO 2 ), gold, silver, aluminum, titanium dioxide (TiO 2 ), zinc oxide (ZnO) , one selected from the group consisting of barium sulfate (BaSO4), zinc sulfide (ZnS), antimony oxide (Sb2O3), antimony-doped tin oxide, nanodiamond, nanogold, nanotitanium dioxide, and nanosilica More than that.

In one embodiment of the present invention, the polymeric resin is one selected from the group consisting of polyolefin-based homopolymer, polyolefin-based copolymer, polyvinyl chloride, polyester, polyurethane, nylon, viscose rayon, aramid fiber and acrylic fiber More than that.

In one embodiment of the present invention, the heating functional mulching mat further comprises an antimicrobial agent, and the antimicrobial agent is characterized in that metal ions are supported on a carrier.

In one embodiment of the present invention, the carrier is at least one selected from the group consisting of zirconium phosphate-based carriers, calcium phosphate-based carriers, zeolite-based carriers, and nanosilver-based carriers, and the metal ions are silver ions and copper ions It is one or more selected from the group consisting of.

In one embodiment of the present invention, the heating functional mulching mat of the present invention is formed by weaving with flat yarn containing light-heating particles and is characterized in that it has weft yarns and warp yarns.

In one embodiment of the present invention, the heating functional mulching mat of the present invention has an air layer formed therein, and the air layer controls the thickness of the heating functional mulching mat by changing the weft fineness and warp fineness of the flat yarn. It is characterized by being formed through

In one embodiment of the present invention, the heating functional mulching mat of the present invention has an air layer formed therein, and the air layer is characterized in that it is formed by forming a concavo-convex structure on the heating functional mulching mat.

In one embodiment of the present invention, the warp fineness and weft fineness of the heating functional mulching mat are each independently 600 to 1300d, preferably 650 to 1200d, more preferably 680 to 1100d, and most preferably 700 to 900d. It is selected within the range of, characterized in that it may be the same as or different from each other.

In one embodiment of the present invention, the heating functional mulching mat is characterized in that voids exist at the point where the weft yarn and the warp yarn intersect.

The heating functional mulching mat containing the photo-heating particles according to the present invention has an excellent heating function due to the action of absorbing light rays such as sunlight and converting them into thermal energy through the characteristics of the photo-heating particles, and the photo-heating particles are uniformly distributed. As it is dispersed, the thermal conductivity is improved, so that a continuous heating effect can be seen at a uniform temperature throughout.

In addition, the flat yarn fabric and the heating functional mulching mat prepared therefrom have advantages of easy drainage and air permeability through pores existing inside the flat yarn fabric.

1 is a schematic diagram of a heating mechanism of a light-heating material.
2 is a photograph of a master batch chip containing light-heating particles.
Figure 3a is a photograph of a film containing light-heating particles, Figure 3b is a photograph of a flat yarn yarn containing light-heating particles.
Figure 4 shows an air layer formed by adjusting the thickness of the functional heating mulching mat of the present invention, Figure 4a is a schematic surface diagram of the functional heating mulching mat of the present invention, Figure 4b is a schematic cross-sectional view thereof.
5a to 5e are conditions and surface photographs of fabrics woven by Examples 1 to 4 and Comparative Examples.
6 is a photograph of a photothermal analysis facility.
Figure 7 is a graph showing the results of measurement of light heating performance for the heating functional mulching mat of the present invention and the existing mulching mat.
8a and 8b are photographs of lettuce grown at 21° C. and FIG. 8b are photos of lettuce grown at 15.5° C., respectively.

Terms or words used in this specification and claims should not be construed as being limited to a general or dictionary meaning. According to the principle that an inventor may define a term or a concept of a word in order to best describe his/her invention, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention. In addition, the embodiments described in this specification and the configurations shown in the drawings are only one embodiment in which the present invention is realized, and do not represent all of the technical spirit of the present invention, so they can be replaced at the time of the present application. It should be understood that there may be many equivalents and variations and applicable examples.

Photothermal material is a material that utilizes the principle that kinetic energy is generated due to the vibration of particles that absorb light energy of light, and this kinetic energy is converted into thermal energy and generates heat. Photothermal materials can be driven not only by sunlight but also by artificial light sources, and since vibrations caused by light energy are simply converted into kinetic energy, it is an eco-friendly material that generates heat continuously even if there is no additional energy supply as long as light is supplied. . 1 is a schematic diagram of a heating mechanism of a light-heating product.

The present invention relates to a functional heating mulching mat comprising photo-heating particles. The heating functional mulching mat containing photo-heating particles according to the present invention provides excellent heating performance due to the action of absorbing light energy from sunlight and artificial light sources through the characteristics of photo-heating particles and converting it into heat energy, The heat-generating particles are uniformly dispersed and the thermal conductivity is improved, thereby providing a continuous heat-generating effect at an overall uniform temperature. In addition, the heating functional mulching mat of the present invention has the advantage of easy drainage and air permeability through pores existing inside the flat yarn fabric.

In an exemplary embodiment of the present invention, the heating functional mulching mat is made of a fabric woven using flat yarn yarns, and the flat yarn yarns are mixed with a polymer material and a masterbatch chip containing light heating particles, It is manufactured through processes such as extrusion, cutting, and heat stretching. Hereinafter, with reference to the accompanying drawings, each manufacturing process and technical characteristics of (1) a masterbatch chip containing light-heating particles, (2) flat yarn yarn, and (3) flat yarn fabric that can be used as a heating functional mulching mat are described. By explanation, the configuration of the present invention and the resulting action and effect will be collectively described.

① Manufacture of masterbatch chips containing photothermal particles

In an exemplary embodiment of the present invention, the masterbatch chip containing the photothermal particles of the present invention is a conventional compounding method in which a polymeric resin and a photothermal material are melt-kneaded together with a dispersant and a wetting agent at a high temperature and extruded with an extruder. made by the process By this process, the photo-heating particles can be uniformly dispersed inside the masterbatch chip.

As the light-heating particles, any particle having a property of absorbing light and converting it into heat may be used, and specifically, particles having various light-heating functions such as metal oxides, carbon compounds, thermally conductive polymers, and photocatalysts may be used. It is preferable that it is one or more selected.

The metal oxide is preferably at least one selected from the group consisting of fluorine-doped tin oxide (FTO), indium tin oxide, and aluminum-doped zinc oxide (AZO), and the carbon The compound is from the group consisting of carbon black, graphite, graphene oxide, carbon fiber powder, carbon nanotube, zirconium carbide and graphene. It is preferable that it is at least one selected. In addition, the photocatalyst is a group consisting of graphene, manganese dioxide (MnO2), silicon dioxide (SiO2) and titanium dioxide (TiO2), or the light reflecting material gold, silver, aluminum, titanium dioxide (TiO2), zinc oxide (ZnO), barium sulfate (BaSO4), zinc sulfide (ZnS) and antimony oxide (Sb2O3), antimony-doped tin oxide, or nanodiamond, nanogold, nanotitanium dioxide, nanosilica It is preferable that at least one selected from the group consisting of is used.

The polymeric resin used for the preparation of the masterbatch chip is not limited as long as it is a polymeric resin commonly used in the manufacture of nonwoven fabrics, and is preferably a polyolefin-based homopolymer or polyolefin-based copolymer including high-density polyethylene and polypropylene, At least one selected from the group consisting of vinyl chloride, polyester, polyurethane, nylon, viscose rayon, aramid fiber and acrylic fiber.

The content of the photo-heating particles in the masterbatch chip may be arbitrarily adjusted in consideration of workability, preferably 10 to 40% by weight, more preferably 15 to 30% by weight, most preferably 15 to 30% by weight, based on the total weight of the masterbatch chip. may be 18 to 22% by weight.

The shape of the manufactured masterbatch chips is as shown in FIG.

② Manufacture of flat yarn yarn

The flat yarn yarn is prepared by melt-kneading a masterbatch chip containing light-heating particles with a polymeric resin, spinning it into a film, and then stretching and slitting. Through this manufacturing process, the light-heating particles can be uniformly dispersed not only inside the flat yarn yarns but also inside the flat yarn fabric manufactured by the flat yarn yarns and the heating functional mulching mat of the present invention. When the photo-heating particles are uniformly dispersed inside the mulching mat, the thermal conductivity is improved thereby to obtain a continuous heating effect at an overall uniform temperature.

In an exemplary embodiment of the present invention, it is also possible to add antibacterial and insect repellent functional particles and melt-knead them together with a polymeric resin during the manufacturing process of the flat yarn yarn. The antimicrobial and insect repellent functional particles may be supported on metal ions on a carrier, wherein the carrier is selected from the group consisting of zirconium phosphate-based, calcium phosphate-based, zeolite-based, and nanosilver-based, and the metal ion is silver ion and copper ion It may be selected from the group consisting of.

The polymeric resin melt-kneaded for the production of the flat yarn yarn is not limited as long as it is a polymeric resin commonly used in the production of nonwoven fabrics, preferably a polyolefin-based homopolymer or polyolefin-based copolymer including high-density polyethylene and polypropylene, It is at least one selected from the group consisting of polyvinyl chloride, polyester, polyurethane, nylon, viscose rayon, aramid fiber and acrylic fiber.

The content of the photothermal particles in the flat yarn may be arbitrarily adjusted by adjusting the mixing amount of the master batch chips, preferably 1 to 5% by weight, more preferably 1.5 to 3% by weight, based on the total weight of the flat yarn yarn, Most preferably, it may be 1.8 to 2.2% by weight.

In the drawing and slitting process, it is possible to adjust the fineness of the manufactured flat yarn in various ways by adjusting process factors such as temperature of the drawing board, drawing speed, drawing ratio, and slitting width.

The shape of the light heating film prepared after film spinning is as shown in FIG. 3A, and the shape of the flat yarn yarn manufactured through the stretching and slitting processes is as shown in FIG. 3B.

③ Manufacture of heating functional mulching mat

The weaving of light-heated woven fabric using flat yarn is to manufacture a mat fabric by a plain weave method using warp and weft yarns, and is manufactured by a conventional method of weaving flat yarn using a water jet loom. It can be. By this manufacturing method, it is possible to weave flat yarn fabrics using warp and weft yarns having various finenesses. The prepared flat yarn fabric can be used as a heating functional mulching mat.

The fineness of the warp yarn and the fineness of the weft yarn used in the heating functional mulching mat of the present invention may be the same as or different from each other. The fineness of the warp yarn and the fineness of the weft used in the heating functional mulching mat of the present invention are selected within the range of 600 to 1300d, preferably 650 to 1200d, more preferably 680 to 1100d, and most preferably 700 to 900d, respectively. It can be.

In an exemplary embodiment of the present invention, an air layer is formed inside the heating functional mulching mat. In an exemplary embodiment, the air layer formed inside the heating functional mulching mat of the present invention is formed by adjusting the thickness of the mulching mat by changing the fineness of the flat yarn, by changing the texture or density of the mulching mat, or by changing the mulching mat. It can be formed by making a concavo-convex structure inside.

In an exemplary embodiment of the present invention, the heating functional mulching mat is woven by crossing the warp and weft yarns in a space narrower than the width of each of the weft and warp yarns during the manufacturing process, resulting in irregular wrinkles in the longitudinal direction of the flat yarns. As the thickness of the flat yarn fabric increases, a structure as if several layers of flat yarns are stacked may be configured, and an air layer may be formed between each of these layers. Air has a thermal conductivity that is 20 times lower than that of polymers applied to normal flat yarn fabrics such as polyethylene and polypropylene. It can lower the temperature of the soil, thereby preventing rapid temperature changes and protecting the root growth of crops from problems even in an environment of rapid temperature drop due to a cold wave.

Figure 4 shows the air layer formed by adjusting the thickness of the heating functional mulching mat of the present invention (Fig. 4a: surface schematic diagram of the heating functional mulching mat of the present invention, Figure 4b: cross-sectional schematic diagram of the heating functional mulching mat of the present invention) .

On the other hand, in an exemplary embodiment of the present invention, since the heating functional mulching mat has a fabric structure, air gaps are generated at the intersection of weft yarns and warp yarns, and air circulation and smooth drainage are possible through these gaps.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in a variety of different forms, and only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. And like reference numerals designate like elements throughout the specification.

[Example]

1. Preparation of HDPE/Graphite Masterbatch Chip Containing Photothermal Particles

In order to manufacture a masterbatch chip containing exothermic functional particles, high-density polyethylene (HDPE) resin (5000S) and graphite material in the form of a powder with a particle size of 5 μm were used to produce photo-heating particles. An HDPE / graphite master batch chip having a content of 20% was prepared, and the shape is shown in FIG. 2.

Extrusion/discharge conditions of the extruder and compounding equipment were optimized to produce uniformly dispersed HDPE/graphite masterbatch chips. Optimized process conditions are shown in Table 1.

Base Filler granularity
(μm) speed
(rpm) extrusion pressure
(%) temperature conditions
(℃) screen discharge condition Mesh time
(h) discharge volume
(kg/h) HDPE black smoke 5 350~400 70-80 150 to 240 80/120/250/80 water bath impregnation
1/3 One 20

2. Manufacture of flat yarn yarn

A film containing 2% by weight of light-heating particles was prepared by mixing the prepared masterbatch chip and raw materials. The spinning conditions of the Pilot Scale film spinning equipment used for this purpose were: extrusion temperature 270℃, T-Die temperature 250 ~ 240℃, screw speed 9rpm, pump speed 8rpm, pump pressure 30bar, drum temperature 90℃, line speed 5m/min. set up As a result of the spinning, the spinning proceeded stably up to a film thickness of 0.02 to 0.03 mm.

Optimal conditions were established at a maximum of 300 ° C. while increasing the temperature based on the spinning condition of 270 ° C. extrusion temperature, and it was prepared in the form shown in FIG. 3a.

A flat yarn was manufactured through a drawing and slitting process using the film prepared under the above conditions. In this process, a total of four types of flat yarn yarns with different fineness were prepared using the change in the fineness of the flat yarn according to the temperature of the heating plate, and the shape of the flat yarn yarn containing the light-heating particles is shown in FIG. 3B.

Flat yarn drawing and slitting conditions are shown in Table 2.

flat yarn fineness 680d 750d 860d 1100d Stretched plate temperature (℃) 100 108 110 115 speed (mpm) 160 160 160 150 stretch ratio 6.6 6.6 6.6 6.6 Slitting width (mm) 8 8 8 8

3. Manufacturing of flat yarn fabric used as a heating functional mulching mat

The flat yarn fabric that can function as the heating functional mulching mat of the present invention can be woven using a water jet loom.

Example 1

The weaving conditions were 8 × 8 density per inch, yarn type was woven with HDPE, gender width 122 inch, and Plain tissue. A flat yarn fabric having a warp fineness of 860d and a weft fineness of 860d was woven using a yarn having a fineness of 860d among four kinds of flat yarns containing light-heating particles manufactured under these conditions.

Example 2

The fabric weaving process and weaving conditions were the same as those of Example 1, but a flat yarn fabric having a warp fineness of 860d and a weft fineness of 1100d was woven using yarns of 860d fineness and 1100d yarn.

Example 3

The fabric weaving process and conditions were the same as those of Example 1, but a fabric having a warp fineness of 750d and a weft fineness of 750d was woven using a yarn having a fineness of 750d.

Example 4

The fabric weaving process and conditions were the same as those of Example 1, but a fabric having a warp fineness of 680d and a weft fineness of 680d was woven using a yarn having a fineness of 680d.

comparative example

A flat yarn fabric for comparison was prepared using the same fabric weaving process and conditions as in Example 1, but using a flat yarn yarn having a fineness of 750 d that did not contain photothermal particles. The flat yarn manufacturing process and conditions are the same as those of the above embodiments except that the light-heating particles are not included.

Weaving conditions of the flat yarn fabrics of Examples 1 to 4 and Comparative Example are shown in Table 3, and surface photographs of Examples 1 to 4 are shown in FIGS. 5A to 5D and surface photographs of Comparative Example are shown in FIG. 5E, respectively.

comparative example Example 1 Example 2 Example 3 Example 4 Density (ea/inch) 8×8 8×8 8×8 8×8 8×8 death HDPE HDPE HDPE HDPE HDPE Graphite content (%) 0 2 2 2 2 Warp fineness (de) 750 860 860 750 680 Weft fineness (de) 750 860 1100 750 680 gender width (inch) 122 122 122 122 122 group Plain Plain Plain Plain Plain

4. Physical property analysis of heat-functional mulching mats and existing mulching mats

The physical properties of a total of 5 types of flat yarn fabrics, including the flat yarn fabrics (Examples 1 to 4) containing 4 types of light-heating particles manufactured through the above examples and the existing flat yarn fabrics (Comparative Example), were compared and analyzed. .

The analysis results are shown in Table 4.

sample comparative example Example 1 Example 2 Example 3 Example 4 Water permeability (g/㎡·h) 106 127 89 95 43 Air permeability (cm3/cm2/s) 8.4 12.9 12.5 11.4 10.2 Tensile strength (N) oblique direction 635.9 691.7 612.5 590.2 547.2 weft direction 553.7 631.0 793.4 548.6 498.8

As shown in Table 4, the moisture permeability of the examples of the present invention was relatively low compared to the comparative example, but in Example 1 to which the fineness of 860d yarn was applied, the moisture permeability was higher than that of the comparative example.

In addition, it showed a tendency to increase as the fineness of the applied flat yarn increased, but it showed a tendency to decrease again in Example 2 in which the weft yarn fineness was applied at 1100d, although the warp fineness was the same as that of Example 1.

On the other hand, the air permeability was relatively high compared to the comparative example, and the same as the moisture permeability, it showed a tendency to increase as the fineness of the applied flat yarn increased, showing the highest air permeability in Example 1, but decreased again in Example 2.

In the case of tensile strength, Examples 1 to 5 contained an impurity called photothermal particles, and showed a tendency to be lower than that of Comparative Example containing only pure HDPE under the same fineness conditions. However, in Examples 1 and 2 to which the yarn of fineness 860d was applied, both the warp direction and the weft direction showed higher tensile strength than the comparative example, and it was confirmed that there was no particular problem in durability.

5. Evaluation of photothermal performance of heat-functional mulching mats and conventional mulching mats

In order to compare the light heating performance of the flat yarn fabrics according to the presence or absence of light heating particles and the fineness of the applied flat yarn, the flat yarn fabric containing the light heating particles of the present invention manufactured through the above examples and the flat yarn fabric of the comparative example Photothermal performance was evaluated.

The experiment was conducted using a conventional photothermal analysis equipment shown in FIG. 6, the distance between the light source and the sample was 50 cm, the illuminance was 13,000 lux, and a light source of 220V, 500W, and 3200K was irradiated for 60 minutes. Data was recorded via a temperature sensor located on the surface of the underside of the sample.

The experimental results are shown in Table 5, and a graph of temperature change according to exposure time is shown in FIG. 7 .

time (minutes) Surface temperature (℃) comparative example Example 1 Example 2 Example 3 Example 4 10 32.5 36.1 36.1 34.9 35.6 20 36.9 42.6 42.3 41.1 40.8 30 39.7 47.3 46.2 45.2 43.8 40 41.7 50.8 49.0 48.2 45.7 50 43.1 53.2 51.0 50.3 47.2 60 44.0 55.1 52.7 52.1 48.3

As confirmed in Table 5 and FIG. 7, as a result of analyzing the light heating performance, the surface temperature of Comparative Example showed the lowest value at 44.0 ° C., and Example 1 showed the highest surface temperature at 55.1 ° C.

In addition, not only Example 1 but also all fabrics containing light-heating particles showed higher light-heating performance than the comparative example, and showed a tendency to increase as the fineness of the applied flat yarn increased.

As a result of the large temperature increase due to light heating in Examples 1 to 4 compared to the comparative example, it was confirmed that the heat generating functional mulching mat containing the light heating particles according to the present invention has very excellent light heating efficiency.

The growth activity of crops is affected by various factors, but among them, temperature is most affected. At this time, the temperature at which crop growth is most vigorous is referred to as the optimum temperature, and this optimum temperature varies depending on the growth stage and type of crop. In addition, the optimum temperature for day/night growth is different, and the further away from the appropriate temperature, the slower the growth, and if left outside this range, the growth inhibition phenomenon occurs.

As a result of comparing the growth of lettuce at 15.5 ° C and 21 ° C in order to compare the difference in growth rate of vegetables according to the temperature difference, it was confirmed that a large difference in growth rate was shown as shown in FIGS. 8a and 8b. That is, in the case of applying the heating functional mulching mat developed in the present invention, it is possible to save heating energy required to maintain the proper temperature for growth for each crop, and to protect crops for a long time and grow crops due to the thermal insulation effect by light heating. is expected to have a positive impact on

The present invention described above has been described with reference to one embodiment shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will have to clarify Therefore, the true technical protection scope of the present invention should be construed by the appended claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (11)

A functional heating mulching mat comprising a polymeric resin and light-heating particles uniformly dispersed inside the polymeric resin,
The polymeric resin is at least one selected from the group consisting of polyolefin-based homopolymer, polyolefin-based copolymer, polyvinyl chloride, polyester, polyurethane, nylon, viscose rayon, aramid fiber and acrylic fiber,
The heating functional mulching mat is formed by weaving with flat yarn containing light heating particles and has weft and warp yarns,
The warp fineness and weft fineness of the heating functional mulching mat are each independently selected within the range of 860 to 1200d, and may be the same or different from each other,
Thermal functional mulching mat. The heating functional mulching mat according to claim 1, wherein the warp fineness and the weft yarn fineness of the heating functional mulching mat are each independently selected within a range of 860 to 1100d. According to claim 1, wherein the photo-heating particles are characterized in that at least one selected from the group consisting of metal oxides, carbon compounds, thermally conductive polymers, and photocatalysts, heating functional mulching mat. The method of claim 3, wherein the metal oxide is at least one selected from the group consisting of fluorine-doped tin oxide (FTO), indium tin oxide, and aluminum-doped zinc oxide (AZO), and the carbon The compound is from the group consisting of carbon black, graphite, graphene oxide, carbon fiber powder, carbon nanotube, zirconium carbide and graphene. At least one selected from the group consisting of graphene, manganese dioxide (MnO2), silicon dioxide (SiO2), gold, silver, aluminum, titanium dioxide (TiO2), zinc oxide (ZnO), barium sulfate (BaSO4), Characterized in that at least one selected from the group consisting of zinc sulfide (ZnS), antimony oxide (Sb2O3), antimony-doped tin oxide, nanodiamond, nanogold, nanotitanium dioxide, and nanosilica, fever Functional mulching mat. The functional heating mulching mat according to claim 3, wherein the light-heating particles are a carbon compound, and the polymeric resin is a polyolefin-based homopolymer or a polyolefin-based copolymer. The functional heating mulching mat according to claim 1, further comprising an antibacterial agent, characterized in that the antimicrobial agent is formed by supporting metal ions on a carrier. The method of claim 6, wherein the carrier is at least one selected from the group consisting of a zirconium phosphate-based carrier, a calcium phosphate-based carrier, a zeolite-based carrier, and a nanosilver-based carrier, and the metal ion is a group consisting of silver ions and copper ions Characterized in that at least one selected from, heating functional mulching mat. The method of any one of claims 1 to 7, wherein an air layer is formed therein, and the air layer is formed by adjusting the thickness of the heating functional mulching mat by changing the weft fineness and warp fineness of the flat yarn. Features, heat-functional mulching mat. [Claim 9] The functional heating mulching mat according to claim 8, characterized in that a void exists at a point where the weft yarn and the warp yarn intersect. delete delete