KR20160133945A - Method for manufacturing heating coating thread by using heating paste composition - Google Patents
Method for manufacturing heating coating thread by using heating paste composition Download PDFInfo
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- KR20160133945A KR20160133945A KR1020150067195A KR20150067195A KR20160133945A KR 20160133945 A KR20160133945 A KR 20160133945A KR 1020150067195 A KR1020150067195 A KR 1020150067195A KR 20150067195 A KR20150067195 A KR 20150067195A KR 20160133945 A KR20160133945 A KR 20160133945A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/395—Isocyanates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/273—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof of unsaturated carboxylic esters having epoxy groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
- D06M15/41—Phenol-aldehyde or phenol-ketone resins
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Surface Heating Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
According to the present invention, there is provided a tension adjusting method comprising: a tension adjusting step of applying a tension to a yarn; Coating an exothermic paste composition around the yarn; Uniformizing the coating thickness of the exothermic paste composition; Wherein the exothermic paste composition comprises 3 to 6 parts by weight of carbon nanotube particles and 0.5 to 30 parts by weight of carbon nanoparticles per 100 parts by weight of the exothermic paste composition, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent and 0.5 to 5 parts by weight of a dispersing agent, wherein the mixed binder is a mixture of an epoxy acrylate or a nuclear methylene diisocyanate, a polyvinyl acetal, The present invention relates to a method for producing an exothermic coating yarn using an exothermic paste composition.
Description
The present invention relates to a method for producing an exothermic coating yarn, and more particularly, to a method for producing an exothermic coating yarn using an exothermic paste composition.
Electrically generated heating elements are formed by arranging electrically conductive wires (copper, copper + aluminum, galvanized iron wire) in the form of electric wire at regular intervals on nonwoven fabric, thin cotton and plate materials, printing heat paste on film (screen, gravure) The head office or the heating paste-coated yarn in the form of electric wire, the carbon yarn or the coated yarn in the form of a weave in an insulator-coated state, the dough-shaped conductive paste in the form of a dipping (impregnated)
The heating element made of conductive wire is applied to electric blankets and mats because of low manufacturing cost but it is impossible to produce products with uniform temperature in the arrangement of wires and there is a risk of shorting of used wire and breakage of carbon yarn, There are limitations and there are many drawbacks such that the shape can not be freely freely adjusted and the mechanical characteristics can not be arbitrarily adjusted.
The adjustment of the resistance value of the film heating element can be adjusted by adjusting the thickness of the conductive material, the width and the length of the conductive material depending on the resistance value of the heating paste, that is, the mixing ratio of the conductive material (carbon, graphite, metal powder) The thicker the film, the less the mechanical properties are. Therefore, there is a limit to increase the thickness of the film. Thus, the distance between the electrodes (silver paste) is adjusted and the resistance value is adjusted.
In this case, since a large number of electrodes having high material values are installed, the manufacturing cost is high, the electrodes are easily damaged, the shape can not be freely set, the mechanical characteristics can not be arbitrarily adjusted, uniform thickness application is difficult, There are many disadvantages.
Woven or heat-treated paste impregnated fibers with conductive carbon paste or heat-generating paste paste can cover much of the disadvantages of wire and film, but they are expensive, have low conductivity and high power consumption
Therefore, the heat stability of the heating element using the heating paste can be determined depending on how much the high-conductivity heating paste is used, the manufacturing cost, and the efficiency of the heating element.
An exothermic paste is prepared by kneading (mixing and dispersing) a conductive material (carbon, graphite, metal coated powder, or a mixture thereof) and a binder (resin mixture, polyester, urethane, acrylic, epoxy, phenol, vinyl, solvent and additives) And the conductivity, workability and physical properties (adhesion, resistance to stretch, etc.) are determined according to the amount of the conductive material to be used and the amount of the binder (PHR,%).
Generally, conductive paste such as carbon, graphite, kitchen carbon and nano carbon is used for heating paste except metal powder. Because of the large oil absorption of conductive material and difficult workability, it is difficult to knead the paste. Therefore, it is almost impossible to add 50% ) Increases the physical properties and workability, but it is limited to use because it has low conductivity.
In addition, when a heating paste is manufactured using a conventional carbon nanotube as a base, it is difficult to have high heat resistance, and the conventional carbonaceous heating paste has a disadvantage in that the specific resistance is relatively high and the manufacturing process is not easy.
(Document 1): Korean Patent No. 10-1294596
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a heating coating yarn using a heating paste having a high heat resistance and a small resistance change with temperature and a low specific resistance.
According to an aspect of the present invention, there is provided a method of manufacturing a heat-sensitive coating yarn using an exothermic paste composition, the method including: controlling a tension applied to a yarn; Coating an exothermic paste composition around the yarn; Uniformizing the coating thickness of the exothermic paste composition; Wherein the exothermic paste composition comprises 3 to 6 parts by weight of carbon nanotube particles and 0.5 to 30 parts by weight of carbon nanoparticles per 100 parts by weight of the exothermic paste composition, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent and 0.5 to 5 parts by weight of a dispersing agent, wherein the mixed binder is a mixture of an epoxy acrylate or a nuclear methylene diisocyanate, a polyvinyl acetal, .
Preferably, the method for manufacturing the exothermic coating yarn using the exothermic paste composition according to an embodiment of the present invention further includes a step of folding a plurality of the yarns after the tension adjustment step.
The step of folding the plurality of yarns according to an embodiment of the present invention includes winding a plurality of yarns on a bobbin and mounting the same on a clip stand so that the yarns can be radiated at a predetermined height; And a step of eccentrically rotating the bobbin so that the plurality of yarns are twisted while being joined together.
According to an embodiment of the present invention, the step of coating the exothermic paste composition around the yarn comprises: receiving the exothermic paste composition in a dipping tank; Guiding a traveling direction of the yarn through a through hole of a top plate installed on the dipping tank; And changing a traveling direction of the yarn through a direction changing roller provided under the top plate.
The step of homogenizing the coating thickness of the exothermic paste composition according to an embodiment of the present invention may include a step of uniformly passing the yarn coated with the exothermic paste composition through a nozzle tube having one side immersed in the exothermic paste composition And a step of secondarily passing the coating yarn through the nozzle rotating together with the coating tube in association with the nozzle tube.
According to an embodiment of the present invention, it is preferable that the method of manufacturing the exothermic coating paste further comprises a step of drying the uniformly coated exothermic paste composition after the step of homogenizing the coating thickness of the exothermic paste composition.
In the heat generating paste composition according to an embodiment of the present invention, the mixed binder may include 10 to 150 parts by weight of a polyvinyl acetal resin, 100 to 500 parts by weight of a phenolic resin Wherein the thermally conductive paste composition is prepared by mixing the thermally conductive paste composition.
As described above, the exothermic coating paste coated with the exothermic paste composition has high heat resistance, so that the resistance change according to the temperature is small and the resistivity is low.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Terms including ordinals such as first, second, etc. may be used to describe various elements, but the elements are not limited by such terms. These terms are used only to distinguish one component from another.
When an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may be present in between . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.
The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, or a combination thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, the manufacturing process of the exothermic paste composition will be described.
The exothermic paste composition (hereinafter, exothermic paste composition) for producing the exothermic coating yarn according to an embodiment of the present invention includes carbon nanotube particles, carbon nanoparticles, a mixed binder, an organic solvent, and a dispersant.
Specifically, 3 to 6 parts by weight of carbon nanotube particles, 0.5 to 30 parts by weight of carbon nanoparticles, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent, 0.5 to 5 parts by weight of a dispersing agent .
The carbon nanotube particles can be selected from single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, or mixtures thereof. For example, the carbon nanotube particles may be multi wall carbon nanotubes. When the carbon nanotube particles are multi-walled carbon nanotubes, the diameter may be from 5 nm to 30 nm, and the length may be from 3 탆 to 40 탆.
The carbon nanoparticles may be graphite nanoparticles, for example, and may have diameters ranging from 1 [mu] m to 25 [mu] m.
The mixed binder functions to allow the exothermic paste composition to have heat resistance even in a temperature range of about 300 DEG C, and can be formed of epoxy acrylate or hexamethylene diisocyanate, polyvinyl acetal, Phenol resin (Phenol resin) mixed form. For example, the mixed binder may be a mixture of an epoxy acrylate, a polyvinyl acetal, and a phenolic resin, or a mixture of hexamethylene diisocyanate, a polyvinyl acetal and a phenolic resin. In the present invention, by increasing the heat resistance of the mixed binder, even when it is heated at a high temperature of about 300 캜, it has an advantage that there is no change in the resistance of the material or breakage of the coating film.
Here, the phenolic resin means a phenolic compound including phenol and phenol derivatives. For example, the phenol derivatives may be selected from the group consisting of p-cresol, o-Guaiacol, Creosol, Catechol, 3-methoxy-1,2- homocatechol, vinylguaiacol, Syringol, iso-eugenol, methoxyeugenol, o (methyloxy) benzenethiol, -Cresol, 3-methoxy-1,2-benzenediol and (z) -2-methoxy-4- (1-propenyl) -phenol (2-methoxy-4- (1-propenyl) -phenol), 2,6-dimethoxy-4- (2-propenyl) ) -Phenol, 3,4-dimethoxy-Phenol, 4ethyl-1,3-benzenediol, Resole phenol, 4-methyl-1,2-benzenediol, 1,2,4-benzene triol, 2-methoxy-6-methylphenol 2-Methoxy-6-methylphenol, 2-Methoxy-4-vinylphenol or 4-ethyl-2-methoxy- And Information that is not.
The mixing ratio of the mixed binder may be 10 to 150 parts by weight of polyvinyl acetal resin and 100 to 500 parts by weight of phenol resin based on 100 parts by weight of epoxy acrylate or hexamethylene diisocyanate. When the content of the phenolic resin is less than 100 parts by weight, heat resistance of the heat generating paste composition is deteriorated. When the content of the phenolic resin is more than 500 parts by weight, the flexibility is lowered.
The organic solvent is used for dispersing the conductive particles and the binder. The organic solvent is selected from the group consisting of Carbitol acetate, Butyl carbotol acetate, DBE (dibasic ester), Ethyl Carbitol, Ethyl Carbitol Acetate, Glycol methyl ether, cellosolve acetate, butyl cellosolve acetate, butanol, and octanol.
Meanwhile, various methods commonly used may be applied to the dispersion process. For example, ultrasonic treatment (roll-milling), bead milling or ball milling Lt; / RTI >
Dispersing agents are used to make the dispersion more smooth. Common dispersants used in the art such as BYK, amphoteric surfactants such as Triton X-100, and ionic surfactants such as SDS can be used.
The exothermic paste composition for producing the exothermic coating yarn according to an embodiment of the present invention may further include 0.5 to 5 parts by weight of a silane coupling agent per 100 parts by weight of the exothermic paste composition.
The silane coupling agent functions as an adhesion promoter for enhancing the adhesive force between the resins when the exothermic paste composition is blended. The silane coupling agent may be an epoxy-containing silane or a mercaptan-containing silane. Examples of such silane coupling agents include epoxy-containing 2- (3,4-epoxycyclohexyl) -ethyltrimethoxysilane, 3-glycidoxytrimethoxysilane, 3-glycidoxypropyltriethoxysilane, (Aminoethyl) 3-aminopropylmethyldimethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane having an amine group and N-2 , N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyltriethoxysil, 3-triethoxysilyl- Propylamine, N-phenyl-3-aminopropyltrimethoxysilane, and 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltriethoxysilane, isocyanate, 3-isocyanatopropyltriethoxysilane and the like, which are limited to those listed above No.
Hereinafter, a method for producing a heat-resistant coating yarn using an exothermic paste composition according to an embodiment of the present invention will be described.
According to an embodiment of the present invention, a method of manufacturing an exothermic paste composition coated yarn includes: a tension adjusting step of applying a tension to a yarn; Coating an exothermic paste composition around the yarn; And equalizing the coating thickness; And drying the uniformly coated exothermic paste composition.
The tension adjusting step for applying a tension to the yarn is a step of providing two rotating shafts provided with rollers on the outer side so as to be rotatable on the rotating plate and allowing the yarn to pass through the outer peripheral surfaces of the two rollers.
The tension adjusting step for imparting tension to the yarn may further include folding the plurality of yarns. The step of folding the yarns is a step of providing a plurality of yarns in a state of being wound around the bobbins, providing a clip band so that the yarns can be radiated at a predetermined height, and setting the rotation axis of the bobbin to be eccentric so that a plurality of yarns are twined while being twisted. Adjust the number of yarns to control the tension.
The step of coating the exothermic paste composition around the yarn is a step of passing a yarn through a dipping tank containing an exothermic paste to coat the exothermic paste on the yarn.
The step of coating the exothermic paste composition may include guiding the direction of advancement of the yarn through the through hole of the top plate installed on the top of the dipping tank containing the paste composition and changing the direction of the yarn through the direction changing roller installed at the bottom of the top plate .
The exothermic paste composition can be prepared by the method described above and includes carbon nanotube particles, carbon nanoparticles, mixed binders, organic solvents and dispersants.
The impeller installed in the dipping tank may be operated to uniformly disperse and disperse the exothermic paste composition, and the resistance value of the coating yarn may be kept constant.
And circulating the exothermic paste composition by driving the circulation pipe connected to both sides of the dipping tank and the hydraulic motor provided at one side of the circulation pipe to prevent drying of the exothermic paste composition. The method may further include the step of preventing drying of the exothermic paste composition by supplying air through an air nozzle provided in the dipping tank.
The step of homogenizing the coating thickness is a step of uniformizing the coating using the pressure difference due to the rotational force to the exothermic paste composition. The step of homogenizing the coating is carried out in such a manner that the yarn coated with the exothermic paste composition is transferred to a nozzle tube 1 rotating in a state in which one side is immersed in the exothermic paste composition And passing the coating yarn through a nozzle which is rotated together with the nozzle tube by being coupled with the nozzle tube.
The step of primarily passing through the nozzle tube rotating in a state immersed in the exothermic paste composition comprises the steps of rotating the nozzle tube and the nozzle by operating a driving motor engaged with the gear at the outer periphery of the nozzle tube, to be. By rotating in such a manner that it is immersed in the exothermic paste composition, penetration of the exothermic paste composition is enhanced.
The uniformity and adhesion of the exothermic paste composition can be further improved by passing the nozzle through the second nozzle.
The step of homogenizing the coating thickness is carried out by passing through a nozzle tube having a length L of 100 mm and an inner diameter d and an outer diameter D of 3.0 mm and 10 mm, respectively, Is primarily determined and the adhesive property and the uniformity of the exothermic paste composition pass through the large diameter portion of the nozzle having the length L 'of 20 mm and the inner diameter d' of 1.0 mm to 1.5 mm, , And the adhesive property and uniformity of the exothermic paste composition are determined as final while passing through the small diameter portion of the nozzle having the length L "of 5 mm to 30 mm and the inner diameter d" of 0.4 mm to 1.0 mm do.
In order to further improve the adhesion and uniformity of the exothermic paste composition, when the length of the small diameter portion of the nozzle was kept constant at 5.0 mm and the size of the inner diameter (d ") was gradually increased from 0.6 mm to 0.75 mm, The thickness of the paste composition is increased from 150 mu m to 190 mu m, and the resulting resistance value is reduced from 130 k? / M to 75 k? / M while the variation of the resistance value is minimized.
The step of drying the uniformly coated exothermic paste composition is a step of applying heat to dry the exothermic paste composition.
For efficient drying, the heat source is supplied from the inside of the drying chamber blocked by the outside and the heat insulating material, and the moving direction of the coating yarn is changed in order to secure a moving space of the coating yarn passing through the drying chamber. Detect and keep it constant. The step of supplying the heat source to the inside of the drying chamber may be a step of discharging dry air using hot air or a step of radiating infrared rays using a hot plate.
The step of changing the traveling direction of the coated yarn is performed by changing the direction of the coating yarn primarily dried through the third direction switching roller provided on the upper part of the drying chamber from upward to downward, The direction of movement of the coated yarn is changed from the lower side to the rear side.
To adjust the speed of the coating process. The moving speed of the coating yarn may be controlled according to the drying condition of the coating liquid by driving the driving motor provided in any one of the third direction switching roller and the fourth direction switching roller.
To keep the temperature inside the drying chamber constant. The internal temperature of the drying chamber is controlled within the range of 100 ° C. to 170 ° C. Especially, the high temperature is maintained at the upper portion where the second direction switching roller is installed, and the low temperature is maintained at the lower portion where the fourth direction switching roller is installed , The primary drying phase is gradually moved to a high temperature, and the drying phase is gradually shifted to a low temperature. When the temperature inside the drying chamber is overheated, it is discharged to the outside through a ventilator.
According to the method for producing a heat-sensitive coating yarn using the heat-generating paste composition according to the present invention having the above-described structure, the exothermic paste composition layer is uniform and the variation of the resistance value is minimized.
Hereinafter, an exothermic paste composition according to the present invention and a coating yarn using the same will be described in detail with reference to test examples. The following test examples are only illustrative of the present invention, and the present invention is not limited by the following test examples.
Test Example
(1) Preparation of Examples and Comparative Examples
Examples (3 kinds) and comparative examples (3 kinds) were prepared as shown in Table 1 below. It is to be noted that the composition ratios indicated in [Table 1] are expressed as% by weight.
In the examples, CNT particles and CNP particles (Examples 1 to 3) were added to a carbitol acetate solvent according to the composition of [Table 1], BYK dispersant was added, and dispersion A was prepared through ultrasonic treatment for 60 minutes Respectively. Thereafter, the master batch was prepared by adding the mixed binder to the carbitol acetate solvent and then mechanically stirring. Next, the dispersion A and the masterbatch were firstly kneaded by mechanical stirring and then subjected to a second-order kneading by a three-roll-milling process to prepare an exothermic paste composition.
In the comparative examples, the CNT particles were added to the carbitol acetate solvent according to the composition of [Table 1], BYK dispersant was added, and the dispersion was prepared by ultrasonication for 60 minutes. After that, ethyl cellulose was added to the carbitol acetate solvent and the master batch was prepared by mechanical stirring. Next, the dispersion B and the masterbatch were firstly kneaded through mechanical stirring, and then subjected to a second-order kneading through a three-roll-mill process to prepare an exothermic paste composition.
(2) Characteristic evaluation of exothermic coating yarn
The exothermic paste compositions according to the present invention and the comparative examples were used to prepare exothermically coated yarns by the method of the present invention.
In order to measure the resistivity of the coated yarn using the exothermic coating yarn according to one embodiment of the present invention and the composition according to the comparative example, the exothermic coating yarn was woven with a general weaving method. Further, in order to confirm the temperature increasing effect according to the applied voltage / current, the exothermic coated woven fabrics corresponding to the examples and comparative examples were heated to 40, 100 and 200 ° C, respectively, Voltage and current were measured.
In addition, the heat stability at 200 캜 was tested for each sample. In FIG. 2, images of heating stability tests of woven fabrics of heat-treated coats produced according to Examples and Comparative Examples are shown, and the test results are summarized in Table 2 below.
Referring to the above Table 2, the specific resistance of the exothermic coating yarn corresponding to the Examples was measured to be smaller than that of the exothermic coating yarn corresponding to the comparative examples. Accordingly, the driving voltage / Were measured to be smaller than those of the exothermic coating yarns corresponding to the comparative examples. That is, it can be confirmed that the heat-resistant coating yarns corresponding to the embodiments can be driven with lower voltage and lower power than the comparative example.
In the heat-treated coated woven fabrics according to Examples 1 to 3, stability was maintained for 20 days under exothermic drive at 200 ° C., whereas in Comparative Examples 1 to 3, within 2 hours during exothermic drive at 200 ° C., This bulging phenomenon was observed. That is, it can be confirmed that the exothermically coated woven fabric corresponding to the embodiments can be stably driven at a temperature of 200 ° C or higher than that of the comparative example.
The embodiments of the present invention have been described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. It will be understood that various modifications may be made without departing from the scope of the present invention.
Claims (7)
Coating an exothermic paste composition around the yarn; And
And uniformizing the coating thickness of the exothermic paste composition,
The heat generating paste composition comprises:
3 to 6 parts by weight of carbon nanotube particles, 0.5 to 30 parts by weight of carbon nanoparticles, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent, 0.5 to 5 parts by weight of a dispersing agent ≪ / RTI >
Wherein the mixed binder is a mixture of an epoxy acrylate, a hexamethylene diisocyanate, a polyvinyl acetal, and a phenolic resin.
Further comprising the step of folding a plurality of the yarns after the tension adjustment step.
Wherein the step of folding the plurality of yarns comprises:
Winding a plurality of the yarns around a bobbin and installing the yarn on a clip so that the yarn can be radiated at a constant height; And arranging the bobbin so that the rotation axis of the bobbin is eccentric so that a plurality of the yarns are twisted while being twisted together.
Wherein coating the exothermic paste composition around the yarn comprises:
Receiving the exothermic paste composition in a dipping tank;
Guiding a traveling direction of the yarn through a through hole of a top plate installed on the dipping tank; And
And changing the proceeding direction of the yarn through a direction changing roller provided under the top plate.
The step of homogenizing the coating thickness of the exothermic paste composition
A step of primarily passing a yarn coated with the exothermic paste composition through a nozzle tube rotating in a state in which one side is immersed in the exothermic paste composition and a step of dividing the coated yarn into a large diameter portion and a small diameter portion having different inner diameters, And secondarily passing through a nozzle which rotates together with the rotating nozzle.
After the step of homogenizing the coating thickness of the exothermic paste composition,
And drying the uniformly coated heat-generating paste composition. ≪ RTI ID = 0.0 > 11. < / RTI >
The mixed binder of the exothermic paste composition,
Wherein the thermally conductive paste composition is prepared by mixing 10 to 150 parts by weight of a polyvinyl acetal resin and 100 to 500 parts by weight of a phenolic resin with respect to 100 parts by weight of epoxy acrylate or hexamethylene diisocyanate.
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| KR1020150067195A KR101689289B1 (en) | 2015-05-14 | 2015-05-14 | Method for manufacturing heating coating thread by using heating paste composition |
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| KR1020150067195A KR101689289B1 (en) | 2015-05-14 | 2015-05-14 | Method for manufacturing heating coating thread by using heating paste composition |
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| KR20160133945A true KR20160133945A (en) | 2016-11-23 |
| KR101689289B1 KR101689289B1 (en) | 2016-12-23 |
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| KR101856978B1 (en) * | 2017-08-29 | 2018-05-14 | (주)대산플랜트 | Fabrication of heat-resistant fabrics using glass fiber with improved carbon bonding rate through surface modification |
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| KR101968514B1 (en) | 2017-03-29 | 2019-04-12 | 지유코리아 주식회사 | Functional triple staff with fever function |
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| KR100725189B1 (en) * | 2006-03-20 | 2007-06-04 | 주식회사 메이드 | A manufacturing process for carbon fiber and carbon fiber comprising the same |
| KR20100040033A (en) * | 2008-10-09 | 2010-04-19 | 주식회사 엑사이엔씨 | High conductive paste composition and method of high conductive paste composition |
| KR101128033B1 (en) * | 2011-12-06 | 2012-04-02 | 엔디티엔지니어링(주) | Method for manufacturing pet film carbon heating element of the whole surface spread type |
| KR20140003370A (en) * | 2010-07-23 | 2014-01-09 | 다이요 홀딩스 가부시키가이샤 | Conductive resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100725189B1 (en) * | 2006-03-20 | 2007-06-04 | 주식회사 메이드 | A manufacturing process for carbon fiber and carbon fiber comprising the same |
| KR20100040033A (en) * | 2008-10-09 | 2010-04-19 | 주식회사 엑사이엔씨 | High conductive paste composition and method of high conductive paste composition |
| KR20140003370A (en) * | 2010-07-23 | 2014-01-09 | 다이요 홀딩스 가부시키가이샤 | Conductive resin composition |
| KR101128033B1 (en) * | 2011-12-06 | 2012-04-02 | 엔디티엔지니어링(주) | Method for manufacturing pet film carbon heating element of the whole surface spread type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101856978B1 (en) * | 2017-08-29 | 2018-05-14 | (주)대산플랜트 | Fabrication of heat-resistant fabrics using glass fiber with improved carbon bonding rate through surface modification |
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