KR20230073425A - Method of manufacturing fiber planar heating element and fiber planar heating element manufactured thereby - Google Patents

Abstract

The present invention relates to a method of manufacturing a fiber planar heating element, which is implemented to manufacture a fiber planar heating element by performing printing on a coated textile fabric using a highly conductive ink containing silver and carbon nanotubes (CNT), and a fiber planar heating element manufactured thereby. The method comprises: a waterproofing process step of coating a textile fabric with resin to perform waterproof; an ink preparation step of mixing microsilver and nanosilver to form mixed silver, and preparing highly conductive ink by including fullperene and the CNT in the mixed silver; a printing step of forming a fiber planar heating element by printing the highly conductive ink on the textile fabric; and an insulation treatment step of coating or laminating the surface of the fiber planar heating element with the resin so as to be insulated.

Description

Method of manufacturing fiber planar heating element and fiber planar heating element manufactured thereby {Method of manufacturing fiber planar heating element and fiber planar heating element manufactured thereby}

The technical field of the present invention relates to a method for manufacturing a fiber planar heating element and a fiber planar heating element manufactured by the method, and in particular, by printing on a coated fiber fabric using a highly conductive ink including silver and CNT (carbon nanotube), the fiber It relates to a method for manufacturing a fiber planar heating element implemented to manufacture a planar heating element and a fiber planar heating element produced thereby.

Planar heating elements are classified into metal heating elements and non-metal heating elements. In recent years, most non-metallic heating elements have been widely used according to weight reduction and sheetization. However, most carbon-based inks have high resistance and are not flexible, so they are not suitable for film, and there are limitations in applying them to textile fabrics.

The non-metal heating element is manufactured from an ink composition using an inexpensive carbon material, and mainly uses CNT (carbon nanotube), carbon black, graphite, or the like. CNTs, carbon black, graphite and the like have random or spherical particle structures. In the ink composition prepared according to this type, since the particles easily stick together or fall apart, the coating distribution of the ink is not uniform when printed as a heating layer. As a result, since the resistance value of the heating layer is not uniform, the heating element in the region where the heating temperature is high is deteriorated first compared to the region where the heating temperature is low, thereby shortening the lifespan. In addition, since the adhesion between the adherend and the heating layer is lowered, peeling or peeling occurs easily, resistance stability and durability are deteriorated.

Commonly used planar heating elements have a low required resistance value, so they must be manufactured by increasing the content of CNT, carbon black, graphite, etc. In that case, the content ratio of carbon material and resin is not balanced, resulting in Since it falls off, it does not function properly as a planar heating element. Recently, an ink composition using carbon and silver materials has been introduced to solve these problems, but there are disadvantages in dispersibility and high cost of the material.

Korean Patent Registration No. 10-1766465 (registered on August 2, 2017) discloses a planar heating element in which carbon fibers are woven in parallel with a mesh and a method for manufacturing the same, wherein a plurality of yarns are bundled and knitted with wefts and warp yarns. this formed mesh; Carbon fiber inserted into the weft yarn when the weft yarn and the warp yarn are interwoven and formed in a curved pattern near both ends of the mesh; and metal yarns periodically woven with carbon fibers at both ends of the mesh to form a connection, and the carbon fibers are carbonized by heating a polyacrylonitrile (PAN) system having an anisotropic orientation, and the carbon content is 90% or more. , The metal yarn is formed in an S-shaped continuous round pattern on the mesh to prevent damage during tension, and the carbon fiber and the metal yarn are characterized in that two or more contact points are formed at the connection part. According to the disclosed technology, in the process of weaving a mesh with general fibers, carbon fibers can be woven together in parallel and in series, and can be arbitrarily cut to a desired length and used, and metal threads for power application are inserted in an S-shape to prevent damage during tension. can prevent

Korean Patent Registration No. 10-1848388 (registered on April 6, 2018) discloses a thin, flat and wide SiC fiber that does not melt or burn at very high temperatures in the air and shows high strength and stable durability for application as a heating element. To produce a planar heating element with a surface, more specifically, as a method of manufacturing a SiC fiber planar heating element without weaving SiC fiber into a fabric, about a method for manufacturing a SiC fiber planar heating element that is molded into a planar heating element and heat treated has been initiated. According to the disclosed technology, infusible PCS fibers with iodine gas; Loading the infusible PCS fibers into a planar mold so that they have at least one of desired orientation, shape and thickness; and heat-treating the frame into which the infusible PCS fiber is loaded in an inert atmosphere, but in the step of loading the infusible PCS fiber into the planar frame, the height of the charging portion in the frame is adjusted to accumulate infusibility It is characterized by adjusting the height of the PCS fiber.

In the conventional technology as described above, an existing carbon heating element based on carbon and a planar heating element composed of silver paste and copper foil constituting the electrode were used, and it is well to make a planar heating element by printing and laminating conductive ink on fibers. However, it has a disadvantage that the conductive film is damaged due to deformation and friction of fibers due to water penetration.

In the conventional technology as described above, copper foil must be used to form the electrode, and the process of entering the copper foil has the disadvantage of poor applicability and difficulty in application to the textile fabric required for wearables, and the resistance is too high. .

In the conventional technology as described above, in the case of CNT (carbon nanotube) or carbon-only ink, it is suitable as a heating element, but has a limit in conductivity and is not suitable for use as an electrode, so a separate electrode such as copper foil or copper wire must be made. It also has a downside.

In the conventional technology as described above, an ultra-low resistance conductor is manufactured as a heating element using only silver, but there is a disadvantage of low economic efficiency, and a method of mixing with metal particles or graphite CNT is applied to improve conductivity, but to lower resistance There were also limitations and poor performance.

In the conventional technique as described above, in order to form detailed electrodes, generally the smaller the silver particles are, the better the plate-shaped ones are, but when the silver particles are round, the silver paste has a disadvantage in that the conductivity is lowered, resulting in a spherical shape. The use of nanosilver also has the disadvantage of rather reducing the conductivity.

Korean Patent Registration No. 10-1766465 Korean Patent Registration No. 10-1848388

The problem to be solved by the present invention is to solve the above-mentioned disadvantages, and manufactures a fiber planar heating element by printing on a coated fiber fabric using a highly conductive ink made of silver and CNT (carbon nanotube). To provide a fiber planar heating element manufacturing method implemented to and a fiber planar heating element manufactured thereby.

As a means for solving the above problems, according to one feature of the present invention, a waterproofing step of waterproofing by coating a fiber fabric with a resin; An ink preparation step of preparing a highly conductive ink by mixing microsilver and nanosilver to form mixed silver and including full perene and carbon nanotubes in the mixed silver; A printing step of forming a fiber planar heating element by printing the highly conductive ink on the fiber fabric; And it provides a fiber planar heating element manufacturing method comprising an insulation treatment step of insulating the surface of the fiber planar heating element by coating or laminating with a resin.

In one embodiment, the waterproofing step is characterized in that the fiber fabric is coated with a resin so that there are no irregularities.

In one embodiment, the ink preparation step includes microsilver, nanosilver, fullerene, and carbon nanotubes in an organic solvent, but further includes a silicon defoamer, an anionic dispersant, a nonionic surfactant, and a cellulose-based resin to achieve a classic It is characterized in that it is manufactured with coating ink.

In one embodiment, the ink preparation step is characterized in that the carbon nanotubes are mixed with the fullerene and dispersed using a ball mill.

In one embodiment, the ink preparation step, based on 100 parts by weight of organic solvent, 0 to 35 parts by weight of microsilver, 0 to 10 parts by weight of nanosilver, 0.02 parts by weight of fullerene, 0.5 to 3.5 parts by weight of carbon nanotubes, silicon 0.01 to 0.5 parts by weight of an antifoaming agent, 0.01 to 0.3 parts by weight of an anionic dispersant, 0.2 to 1 part by weight of a nonionic surfactant, and 30 to 70 parts by weight of a cellulosic resin, characterized in that it is prepared as a highly conductive ink.

In one embodiment, the ink preparation step, based on 100 parts by weight of organic solvent, 15 to 60 parts by weight of nanosilver, 0.01 to 0.05 parts by weight of fullerene, 0.5 to 3.5 parts by weight of carbon nanotubes, 0.01 to 0.5 parts by weight of silicon defoamer , 0.05 to 0.5 parts by weight of an anionic dispersant, 0.05 to 0.5 parts by weight of a nonionic surfactant, and 20 to 60 parts by weight of a cellulose resin, characterized in that it is prepared as a highly conductive ink.

In one embodiment, the ink preparation step is characterized by using butyl cellosolve acetate as the organic solvent.

In one embodiment, the ink preparation step is characterized by mixing the fullerene and the carbon nanotubes in a mesh structure.

In one embodiment, the ink preparation step, based on 100 parts by weight of butyl cellusolve acetate, 15.0 parts by weight of microsilver, 10.0 parts by weight of nanosilver, 0.02 parts by weight of fullerene, 3.0 parts by weight of carbon nanotubes, 0.5 parts by weight of silicone defoamer , 0.5 parts by weight of a phosphoric acid ester salt, 0.5 parts by weight of a silicone glycol copolymer, and 30 parts by weight of a cellulose-based resin, characterized in that it is prepared as a highly conductive ink.

In one embodiment, the ink preparation step, 1000g of butyl cellosolve acetate, 0.2g of fullerene; 30 g of carbon nanotubes having a diameter of 20 nm and a length of 1 to 25 μm; 150 g of microsilver having a particle size of 200 to 300 nm after dispersing in a mechanical and physical manner by adding 5.0 g of phosphoric acid ester salt; 100 g of nano silver having a particle size of 20 to 60 nm; 5.0 g of silicone antifoam; 5.0 g of silicone glycol copolymer; And 300 g of a cellulose-based resin is mixed, stirred, milled again with a roll mill, and then the viscosity is adjusted using the butyl cellosolve acetate to prepare a highly conductive ink.

In one embodiment, the printing step is characterized in that, when printing the high-conductivity ink on the textile fabric, a predetermined heating pattern is provided in response to the resistance value of the high-conductivity ink.

In one embodiment, the printing step is characterized in that a predetermined heating pattern is provided by determining a corresponding length and width according to the resistance value of the high conductive ink.

In one embodiment, the printing step has a diameter of 200 to 300 nm in the case of the microsilver, a diameter of 20 to 60 nm in the case of the nano silver, and a diameter of 15 to 25 nm in the case of the carbon nanotube and a length. is 1 to 25 μm, and in the case of the fullerene, it is characterized in that a heating pattern is given with a diameter of 5 to 30 nm.

In one embodiment, the printing step may include, in the case of a heating pattern by parallel connection, one positive electrode line pattern; one negative electrode line pattern formed at a predetermined distance from the positive electrode line pattern; and forming a heating pattern to include a plurality of heating line patterns connected between the positive electrode line pattern and the negative electrode line pattern and formed in a zigzag shape at predetermined intervals.

In one embodiment, the printing step is characterized in that electrodes are connected using the positive electrode line pattern and the negative electrode line pattern.

In one embodiment, in the printing step, in the case of a heating pattern by parallel connection, electrodes are formed on one end of the positive electrode line pattern and one end of the negative electrode line pattern, but the portion where the electrode is formed is higher than the other portion. It is characterized by printing so that it is formed thickly.

In one embodiment, the printing step may include, in the case of a heating pattern by serial connection, one positive electrode dot pattern; one negative electrode dot pattern formed at a predetermined distance from the positive electrode dot pattern; and forming a heating pattern to include one heating line pattern connected between the positive electrode dot pattern and the negative electrode dot pattern and formed in a zigzag shape.

In one embodiment, the printing step is characterized in that electrodes are connected using the positive electrode dot pattern and the negative electrode dot pattern.

In an embodiment, the printing step may include printing the positive electrode dot pattern and the minus electrode dot pattern to be thicker than the heating line pattern in the case of a heating pattern by parallel connection.

In one embodiment, the printing step may include, in the case of a heating pattern by serial-parallel connection, one positive electrode line pattern; two negative electrode line patterns formed with a predetermined distance from both sides of the positive electrode line pattern; and forming a heating pattern to include a plurality of heating line patterns connected between the positive electrode line pattern and the negative electrode line pattern and formed at predetermined intervals.

In one embodiment, the printing step is characterized in that electrodes are connected using the positive electrode line pattern and the negative electrode line pattern.

In one embodiment, in the printing step, in the case of a heating pattern by serial-parallel connection, electrodes are formed on one end of the positive electrode line pattern and one end of the negative electrode line pattern, but the portion where the electrode is formed is different. It is characterized by printing so that it is formed thicker.

In one embodiment, the printing step is characterized in that, after printing the highly conductive ink on the textile fabric, drying in a hot air oven at a preset temperature for a preset time.

As a means for solving the above problems, according to another feature of the present invention, a waterproofing step of waterproofing by coating a fiber fabric with a resin; An ink preparation step of preparing a highly conductive ink by mixing microsilver and nanosilver to form mixed silver and including full perene and carbon nanotubes in the mixed silver; A printing step of forming a fiber planar heating element by printing the highly conductive ink on the fiber fabric; And it provides a fiber planar heating element manufactured by a fiber planar heating element manufacturing method comprising an insulation treatment step of insulating the surface of the fiber planar heating element by coating or laminating with a resin.

As an effect of the present invention, a method for manufacturing a fiber planar heating element implemented to manufacture a fiber planar heating element by printing on a coated fiber fabric using a highly conductive ink made of silver and CNT (carbon nanotube), and a method for manufacturing a fiber planar heating element manufactured thereby By providing a fiber planar heating element, printing a highly conductive ink for a heating element with excellent mechanical properties, thermal stability and adhesiveness on a textile fabric with excellent flexibility, excellent electrical resistance stability and excellent flexibility, durability due to resistance value change (i.e. , uniformity of heating temperature) and excellent adhesion to textile fabrics, so copper foil is not used during product processing, preventing falling off of textile fabrics, and preventing electrical short circuits or sparks caused by falling off. that it is not

1 is a view illustrating a method for manufacturing a fiber planar heating element according to an embodiment of the present invention.
FIG. 2 is a diagram explaining a parallel connection heating pattern in the printing step in FIG. 1 .
FIG. 3 is a diagram explaining a series-connected heating pattern in the printing step in FIG. 1 .
FIG. 4 is a diagram explaining a series-parallel connection heating pattern in the printing step in FIG. 1 .
FIG. 5 is a diagram for explaining resistance measurement after the printing step in FIG. 1 .
Figure 6 is a view explaining the fiber planar heating element after the insulation treatment step in Figure 1.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

The meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element. It should be understood that when an element is referred to as “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to a described feature, number, step, operation, component, part, or It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Now, with reference to the drawings with respect to the method for manufacturing a fiber planar heating element according to an embodiment of the present invention and a fiber planar heating element manufactured thereby, it will be described in detail.

1 is a view explaining a method for manufacturing a fiber planar heating element according to an embodiment of the present invention, FIG. 2 is a view explaining a parallel connection heating pattern in the printing step in FIG. 1, and FIG. 3 is a printing step in FIG. Figure 4 is a diagram for explaining the series-parallel connection heating pattern in the printing step in FIG. 1, and FIG. 5 is a diagram for explaining resistance measurement after the printing step in FIG. 1. 6 is a view for explaining the fiber planar heating element after the insulation treatment step in FIG.

1 to 6, the fiber planar heating element manufacturing method (S100) includes a waterproof processing step (S110), an ink preparation step (S120), a printing step (S130), and an insulation treatment step (S140), including flexibility. It is made of excellent and washable cotton heating fiber fabric.

In the waterproof processing step (S110), a coating device or system is used to coat the fiber fabric with a resin to make it waterproof.

In one embodiment, in the waterproofing step (S110), a fiber fabric having excellent flexibility may be used.

In one embodiment, in the waterproofing step (S110), irregularities may be minimized by coating the fiber fabric with a resin.

In the ink preparation step (S120), microsilver and nanosilver are mixed using a mixing device or system to form mixed silver, and the formed mixed silver includes fullperene and CNT (carbon nanotube) having excellent electron transfer ability. to prepare high conductivity ink.

In one embodiment, in the ink preparation step (S120), high conductivity ink for a heating element having excellent mechanical properties, thermal stability and adhesiveness and ultra-low resistance of microohms (μΩ) may be used.

In one embodiment, the ink preparation step (S120) includes microsilver, nanosilver, fullerene, and carbon nanotubes in an organic solvent, but further includes a silicon defoamer, an anionic dispersant, a nonionic surfactant, and a cellulose-based resin to prepare the conductive ink for the heating element.

In one embodiment, in the ink preparation step (S120), when preparing the conductive ink for the heating element, carbon nanotubes may be mixed with fullerene and dispersed using a ball mill.

In one embodiment, in the ink preparation step (S120), 0 to 35 parts by weight of microsilver, 0 to 10 parts by weight of nanosilver, 0.02 parts by weight of fullerene, and 0.5 to 3.5 parts by weight of carbon nanotubes, based on 100 parts by weight of organic solvent. , 0.01 to 0.5 parts by weight of silicone defoamer, 0.01 to 0.3 parts by weight of an anionic dispersant, 0.2 to 1 part by weight of a nonionic surfactant, and 30 to 70 parts by weight of a cellulose-based resin may be included to prepare a conductive ink for a heating element.

In one embodiment, in the ink preparation step (S120), 15 to 60 parts by weight of nanosilver, 0.01 to 0.05 parts by weight of fullerene, 0.5 to 3.5 parts by weight of carbon nanotubes, 0.01 parts by weight of silicon defoamer, based on 100 parts by weight of organic solvent. A conductive ink for a heating element may be prepared by including ~0.5 parts by weight, 0.05 to 0.5 parts by weight of an anionic dispersant, 0.05 to 0.5 parts by weight of a nonionic surfactant, and 20 to 60 parts by weight of a cellulose-based resin.

In one embodiment, in the ink preparation step (S120), various organic solvents may be used in the case of organic solvents, but butyl cellosolve acetate may be preferably used.

In one embodiment, in the ink preparation step (S120), fullerenes and carbon nanotubes may be mixed in a mesh structure.

In one embodiment, the ink preparation step (S120), as shown in Table 1 below, preferably, based on 100 parts by weight of butyl cellosolve acetate, an organic solvent, 15.0 parts by weight of microsilver, 10.0 parts by weight of nanosilver, fullerene 0.02 parts by weight, 3.0 parts by weight of carbon nanotubes, 0.5 parts by weight of silicone antifoaming agent, 0.5 parts by weight of phosphoric acid ester salt as an anionic dispersant, 0.5 parts by weight of silicone glycol copolymer as a nonionic surfactant, and 30 parts by weight of cellulose-based resin. It can produce conductive ink for use.

raw material name content ratio(%) Butyl Cellusolve Acetate 100 62.69 micro silver 15.0 9.40 nano silver 10.0 6.27 fullerene 0.02 0.01 carbon nanotube 3.0 1.88 silicone defoamer 0.5 0.31 Phosphate ester salt 0.5 0.31 silicone glycol copolymer 0.5 0.31 cellulosic resin 30 18.80 total 159.52 99.98

In one embodiment, the ink preparation step (S120), when preparing the conductive ink for the heating element, organic solvent (butyl cellosolve acetate) 1000g, fullerene 0.2g; 30 g of carbon nanotubes having a diameter of 20 nm and a length of 1 to 25 μm; 150 g of microsilver having a particle size of 200 to 300 nm after adding 5.0 g of an anionic dispersant (phosphate ester salt) and dispersing in a mechanical and physical manner; 100 g of nano silver having a particle size of 20 to 60 nm; 5.0 g of silicone antifoam; 5.0 g of nonionic surfactant (silicone glycol copolymer); And 300 g of a cellulose-based resin is mixed, stirred, milled again with a roll mill, and then the viscosity is adjusted through an organic solvent (butyl cellosolve acetate) to prepare a surface heating element ink composition.

In the printing step (S130), the high conductive ink prepared in the ink preparation step (S120) is printed on the textile fabric waterproofed in the waterproofing step (S110) using a printing device or system to form a fiber planar heating element.

In one embodiment, the printing step (S130), when printing the high conductive ink prepared in the ink preparation step (S120) on the textile fabric waterproofed in the waterproof processing step (S110), the ink prepared in the ink preparation step (S120) Depending on the resistance value of the highly conductive ink, in order to optimize thermal efficiency and power supply, a predetermined printing pattern (or heating pattern) may be given correspondingly.

In one embodiment, the printing step (S130) takes into account the resistance (or heat quantity) that varies depending on the composition of the high-conductive ink prepared in the ink preparation step (S120), and the length and width corresponding to it to achieve optimal heat generation. By determining, a predetermined heating pattern (or printing pattern) may be given.

In one embodiment, the printing step (S130) is 200 to 300 nm in diameter in the case of microsilver, 20 to 60 nm in diameter in the case of nanosilver, and 15 to 25 nm in diameter and length in the case of carbon nanotubes. 1 to 25 μm, in the case of fullerene, a heating pattern (or printing pattern) may be given with a diameter of 5 to 30 nm.

In one embodiment, the printing step (S130), when connected in parallel with a heating pattern suitable for medium resistance, as shown in Figure 2, one positive electrode line pattern; one negative electrode line pattern formed at a predetermined distance from the corresponding positive electrode line pattern; In addition, a heating pattern (or printing pattern) may be formed by including a plurality of heating line patterns connected between the corresponding positive electrode line pattern and the corresponding negative electrode line pattern and formed in a zigzag shape at predetermined intervals. there is.

In one embodiment, the printing step (S130) prints only the highly conductive ink prepared in the ink preparation step (S120) on the textile fabric waterproofed in the waterproof processing step (S110) without copper foil for electrode connection, Electrodes can be connected using the positive electrode line pattern and the negative electrode line pattern formed as shown in FIG.

In one embodiment, in the printing step (S130), in the case of the parallel connection heating pattern 100 as shown in FIG. 2, electrodes may be formed on one end of the positive electrode line pattern and one end of the negative electrode line pattern. At this time, printing may be performed (refer to the red dot in FIG. 2) so that the portion where the electrode is formed is thicker than the other portion.

In one embodiment, the printing step (S130), when connected in series with a heating pattern suitable for low resistance, as shown in Figure 3, one positive electrode dot pattern; one negative electrode dot pattern formed at a predetermined distance from the corresponding plus electrode dot pattern; In addition, a heating pattern (or printing pattern) may be formed by including one heating line pattern connected between the corresponding positive electrode dot pattern and the corresponding negative electrode dot pattern and formed in a plurality of zigzag shapes.

In one embodiment, in the printing step (S130), the electrodes are connected using the positive electrode dot pattern and the minus electrode dot pattern formed as shown in FIG. 3 by printing only the highly conductive ink on the textile fabric without copper foil for electrode connection. can make it

In one embodiment, in the printing step (S130), in the case of the serial connection heating pattern 200 as shown in FIG. 3, the positive electrode dot pattern (see red dot in FIG. 3) and the negative electrode dot pattern (see FIG. 3 See the red dot in ) can be printed so that it is thicker than the heating line pattern.

In one embodiment, the printing step (S130), when connected in series and parallel with a heating pattern suitable for high resistance, as shown in FIG. 4, one positive electrode line pattern 320; two negative electrode line patterns 310 and 330 formed at a predetermined distance from both sides of the corresponding positive electrode line pattern 320; In addition, the heating pattern (or printing pattern) is formed by including a plurality of heating line patterns connected between the corresponding positive electrode line pattern 320 and the corresponding negative electrode line pattern 310, 330 and formed at predetermined intervals. can form.

In one embodiment, the printing step (S130) prints only the highly conductive ink prepared in the ink preparation step (S120) on the textile fabric waterproofed in the waterproof processing step (S110) without copper foil for electrode connection, The electrodes may be connected using one positive electrode line pattern 320 and two negative electrode line patterns 310 and 330 formed as shown in FIG.

In one embodiment, in the printing step (S130), in the case of the series-parallel connection heating pattern 300 as shown in FIG. Electrodes can be formed on one end of and one end of the negative electrode line patterns 310 and 330, and at this time, printing can be performed (refer to the red dot in FIG. 4) so that the electrode is formed thicker than other parts.

In one embodiment, in the printing step (S130), using the high conductive ink prepared in the ink preparation step (S120), the textile fabric waterproofed in the waterproofing step (S110), as shown in FIG. After printing with a 30-item screen with a width of 3 mm and a length of 300 mm or 3000 mm, a width of 5 mm and a length of 300 mm, a width of 10 mm and a length of 300 mm, hot air at a preset temperature (eg 150 ° C.) for a preset time (eg 2 minutes) If the resistance is measured after drying in an oven, it is shown in Table 2 below.

Width (mm) 3 5 10 Length (mm) 300 (3000) 300 300 Length resistance (Ω) 3.5 (200.5) 2.5 1.5 Ω/Wh 0.1 or less 0.02 or less Less than 0.002

Insulation processing step (S140), coating or laminating the surface of the fiber planar heating element formed in the printing step (S130) using a coating device or system or laminating device or system with a resin to give an insulation treatment.

In one embodiment, in the insulation treatment step (S140), after the printing step (S130), for insulation of the fiber planar heating element, it may be coated with a resin or laminated.

In one embodiment, in the insulation treatment step (S140), as shown in FIG. 6, the high conductive ink prepared in the ink preparation step (S120) on the textile fabric 410 waterproofed in the waterproof processing step (S110) After printing 420), the resin 430 may be coated or laminated to form the fiber planar heating element 400.

The fiber planar heating element manufacturing method (S100) having the configuration as described above is implemented to manufacture a fiber planar heating element by printing on a coated fiber fabric using a highly conductive ink made of silver and CNT (carbon nanotube). , Highly conductive ink for heating elements with excellent mechanical properties, thermal stability and adhesiveness is printed on textile fabric with excellent flexibility, resulting in excellent electrical resistance stability and flexibility, durability due to change in resistance value (i.e. uniformity of heating temperature) It prevents deterioration and has excellent adhesion to the fiber fabric, so copper foil is not used during product processing, preventing the falling off of the fiber fabric and preventing the occurrence of electric short circuits or sparks due to the falling off phenomenon.

Fiber planar heating element manufacturing method (S100) having the configuration as described above, manufacturing a high-conductive ink for a heating element using microsilver, nanosilver, fullerene, carbon nanotube, and using only the high-conductivity ink for the heating element without copper foil. Thus, it is possible to manufacture a fiber planar heating element by printing on a fiber fabric coated with a waterproof resin. In addition, the fiber planar heating element manufacturing method (S100) having the configuration as described above uses a fiber fabric and a cellulose-based resin with excellent mechanical properties, thermal stability, and adhesiveness, and prints only with ink that does not require copper foil and uses resin. By coating or laminating, it is possible to manufacture a planar heating element using flexible fibers with excellent durability.

The fiber planar heating element manufacturing method (S100) having the configuration as described above replaces the existing planar heating element made of carbon heating element, silver paste, and copper foil, and uses only silver and CNT (carbon nanotube) high-conductivity ink for the heating element. Forming a planar heating element; Water-repellent fabric using ultra-low resistance high conductivity ink for heating elements containing organic solvent, microsilver, nanosilver, fullerene, carbon nanotube, silicone defoamer, anionic dispersant, nonionic surfactant and cellulose resin By printing on the fabric to produce a fiber fabric planar heating element, it is possible to protect the conductive film by preventing absorption or penetration of water into the fabric fabric.

In order to compensate for the disadvantage that the conductivity of the silver paste is reduced when the shape of the silver particle is round and the disadvantage that the conductivity is reduced when the spherical nanosilver is used, a method for manufacturing a fiber planar heating element having the configuration as described above (S100) increases precision and conductivity at the same time without any problem in mixing. , the conductivity is maximized through dispersion treatment of fullerenes and carbon nanotubes to overcome silver's cost disadvantage and decrease in conductivity.

Fiber planar heating element manufacturing method (S100) having the configuration as described above, by mixing a small amount of fullerene, CNT and nanosilver, etc. can reach a low resistance value in the microohm range, the high specific surface area of nanosilver, fullerene and It is mixed in a mesh structure of CNT, and serves to hold materials and fibers, having a uniform ink composition distribution and excellent adhesion. As a result, compared to existing CNT or carbon-based heating inks, electrical resistance is higher. It is very low and has excellent adhesion to the textile fabric during product manufacturing, which can cause detachment from the textile fabric during product processing, and detachment from the textile fabric due to bending and bending during construction of the finished product. It is possible to prevent electrical short circuits or sparks, durability deterioration (that is, deterioration in the uniformity of heating temperature) due to a change in resistance value, and the like.

The fiber planar heating element manufacturing method (S100) having the configuration as described above is printed in consideration of the resistance value between the electrodes and the efficiency of the power supply so that the optimal amount of heat comes out according to the resistance of the ink when printing ink on a textile fabric. Electrical efficiency and heating value can be controlled by printing in a mixed form of series, parallel, and series/parallel by changing the pattern, and coating or laminating with resin.

Fiber planar heating element produced by the method for manufacturing a fiber planar heating element according to an embodiment of the present invention, using a coating device or system to coat the fiber fabric with a resin waterproof processing step (S110); An ink that prepares high-conductivity ink by mixing microsilver and nanosilver using a mixing device or system to form mixed silver, and including fullerene and CNT (carbon nanotube), which have excellent electron transfer ability, in the formed mixed silver. preparation step (S120); A printing step (S130) of printing the highly conductive ink prepared in the ink preparation step (S120) on the textile fabric waterproofed in the waterproof processing step (S110) using a printing device or system to form a fiber planar heating element; And a fiber planar heating element manufacturing method comprising an insulation treatment step (S140) of insulating the surface of the fiber planar heating element formed in the printing step (S130) by using a coating device or system or laminating device or system by coating or laminating the surface of the fiber planar heating element with resin prepared by; It has excellent flexibility and can be washed.

The fiber planar heating element prepared by the method for manufacturing a fiber planar heating element according to an embodiment of the present invention is an organic solvent, microsilver, nanosilver, fullerene, carbon nanotube, silicone antifoaming agent, anionic dispersant, nonionic surfactant, cellulose-based It is possible to achieve ultra-low resistance in the microohm range by printing on textile fabric using high conductivity ink for heating elements containing resin and carbon black. When printing high conductivity ink for heating elements on textile fabric, there is no copper foil and it does not come off with textile fabric. The phenomenon is prevented, and there is no electric short circuit or spark generation due to the drop-off phenomenon caused by the copper foil, and it is flexible.

The fiber planar heating element prepared by the method for manufacturing a fiber planar heating element according to an embodiment of the present invention is an organic solvent, microsilver, nanosilver, fullerene, carbon nanotube, silicone antifoaming agent, anionic dispersant, nonionic surfactant, cellulose-based As a result of manufacturing by printing on a textile fabric using a highly conductive ink composition for a heating element containing a resin, it has excellent electrical resistance stability and flexibility, thereby preventing durability (i.e., uniformity of heating temperature) from deterioration due to a change in resistance value, Excellent adhesion to the fiber fabric prevents the phenomenon of falling off with the fiber fabric that occurs during product processing, and prevents electrical short circuits or sparks caused by copper foil falling off.

Fiber planar heating element produced by the method for manufacturing a fiber heating element according to an embodiment of the present invention, in order to obtain the required amount of heat in consideration of the characteristics of the ink printed on the textile fabric and the stability of the power supply, as shown in FIG. Several heating elements are connected in parallel (100), as shown in FIG. 3, connected in series with only one heating wire (200), or as shown in FIG. 4, connected in a mixed form of series and parallel (300). ) after the printing pattern is formed on the textile fabric, it is made by coating the resin thereon. Here, the term 'heating element' is used interchangeably with the term 'plane heating element', and the fields of application of the heating element can be applied to the building and construction field, the industrial facility field, the military field, the household goods field, the agricultural and livestock field, and the automobile field. , Heating elements include floor heating, wall heating, heat frame, snow melting system, pipe insulation, military equipment heating, military supplies, heating, portable heating mats, thermal clothing, thermal shoes, agricultural and marine product drying racks, livestock floor heating, vinyl house anti-icing, aging It includes a heating element used for cultivation, car seat heating, car steering wheel heating, etc. More preferably, the heating element may be a heating film.

Fiber planar heating element prepared by the method for manufacturing a fiber heating element according to an embodiment of the present invention, based on 100 parts by weight of organic solvent, 15 to 60 parts by weight of nanosilver, 0.01 to 0.05 parts by weight of fullerene, 0.5 to 3.5 parts by weight of carbon nanotubes By using a conductive ink for a heating element containing 0.01 to 0.5 parts by weight of a silicone antifoamer, 0.05 to 0.5 parts by weight of an anionic dispersant, 0.05 to 0.5 parts by weight of a nonionic surfactant, and 20 to 60 parts by weight of a cellulose resin, adhesion , prevention of falling off with textile fabrics, excellent electrical resistance stability and heating temperature distribution.

The fibrous planar heating element produced by the method for manufacturing a fibrous heating element according to an embodiment of the present invention has a diameter of 200 to 300 nm in the case of microsilver, and a diameter of 20 to 60 nm in the case of nanosilver, and in the case of carbon nanotubes. In the case of fullerene, the diameter is 15 to 25 nm and the length is 1 to 25 μm, and in the case of fullerene, the diameter is 5 to 30 nm.

The fiber planar heating element prepared by the method for manufacturing a fiber planar heating element according to an embodiment of the present invention is an ink composition in which carbon nanotubes and fullerenes are mixed with nanosilver and a small amount of dispersed carbon nanotubes in order to improve conductivity, precision and adhesion. However, microsilver and nanosilver are used instead of silver paste to improve precision and adhesion, and carbon nanotubes, which were difficult to apply due to dispersibility problems, are mixed with fullerene and dispersed through a ball mill method to improve economy and conductivity. By manufacturing and using ink with excellent conductivity, the problem caused by the application of copper foil is fundamentally eliminated by coating only the ink without using copper foil, and the flexibility problem caused by the use of film is also solved. can be overcome

The fiber planar heating element prepared by the method for manufacturing a fiber planar heating element according to an embodiment of the present invention may reach a low resistance value by mixing microsilver, nanosilver, carbon nanotube and fullerene, and microsilver, nanosilver, carbon This is because the nanotubes and fullerenes have a high specific surface area and network structure to hold the mixed material, so that the ink composition can have a uniform distribution and has excellent adhesion to the fiber fabric. As a result, the existing carbon nanotubes B. It has excellent electrical resistance and stability compared to heating inks whose main component is carbon, and has excellent adhesion to textile fabrics during product manufacturing. Electrical short circuits or sparks that may occur due to falling out of the textile fabric, durability degradation (ie, uniformity of heating temperature) due to change in resistance value, etc. can be prevented in advance.

The fiber planar heating element produced by the method for manufacturing a fiber heating element according to an embodiment of the present invention, by using a cellulose-based resin with excellent mechanical properties, thermal stability, and adhesiveness to the fiber fabric, a highly conductive ink with excellent durability is produced Depending on the pattern in which the ink is printed, the stability of the power supply is increased and the amount of heat generated can be adjusted to make an optimal textile fabric heating element.

As described above, the embodiments of the present invention are not implemented only through the above-described device and/or operating method, but through a program for realizing functions corresponding to the configuration of the embodiment of the present invention and a recording medium on which the program is recorded. It may be implemented, and such an implementation can be easily implemented by an expert in the technical field to which the present invention belongs based on the description of the above-described embodiment. Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also included in the scope of the present invention. that fall within the scope of the right.

S100: Method for manufacturing fiber planar heating element
S110: waterproof processing step
S120: ink preparation step
S130: printing step
S140: Insulation processing step
100: parallel connection heating pattern
200: serial connection heating pattern
300: series-parallel connection heating pattern
310, 330: negative electrode line pattern
320: plus electrode line pattern
400: fiber plane heating element
410: textile fabric
420: high conductivity ink
430 Resin

Claims (5)

A waterproofing step of coating the fiber fabric with a resin to make it waterproof;
An ink preparation step of preparing a highly conductive ink by mixing microsilver and nanosilver to form mixed silver and including full perene and carbon nanotubes in the mixed silver;
A printing step of forming a fiber planar heating element by printing the highly conductive ink on the fiber fabric; and
Fiber planar heating element manufacturing method comprising an insulation treatment step of insulating the surface of the fiber planar heating element by coating or laminating with a resin.
The method of claim 1, wherein the waterproofing step,
A method for manufacturing a fiber planar heating element, characterized in that for coating the resin so that the fiber fabric has no irregularities.
The method of claim 1, wherein the ink preparation step,
In organic solvents, microsilver, nanosilver, fullerene, carbon nanotubes are included, but silicon antifoaming agents, anionic dispersants, nonionic surfactants, and cellulose resins are further included to form a highly conductive ink. Heating element manufacturing method.
The method of claim 3, wherein the ink preparation step,
Fiber planar heating element manufacturing method characterized in that the carbon nanotubes are mixed with the fullerene and dispersed using a ball mill.
A waterproofing step of coating the fiber fabric with a resin to make it waterproof;
An ink preparation step of preparing a highly conductive ink by mixing microsilver and nanosilver to form mixed silver and including full perene and carbon nanotubes in the mixed silver;
A printing step of forming a fiber planar heating element by printing the highly conductive ink on the fiber fabric; and
Fiber planar heating element produced by a fiber planar heating element manufacturing method comprising an insulation treatment step of insulating the surface of the fiber planar heating element by coating or laminating with a resin.

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