KR102090192B1 - Heating fabric - Google Patents

Abstract

The present invention relates to a heat generating fabric, and more specifically, it exhibits a predetermined heat generation characteristic, has a uniform temperature distribution, is excellent in flexibility, and when applied to a fixed surface having a step, it has excellent adhesion and excellent heat insulating performance. It relates to the heat generating fabric shown.

Description

Heating fabric {Heating fabric}

The present invention relates to a heat generating fabric, and more specifically, it exhibits a predetermined heat generation characteristic, has a uniform temperature distribution, is excellent in flexibility, and when applied to a fixed surface having a step, it has excellent adhesion and excellent heat insulating performance. It relates to the heat generating fabric shown.

In general, the heating fabric is a heat generating fabric formed by placing a heating wire in a mesh heating element in the form of a planar heating element that is heated by electrical characteristics and a polyetherene foam for thermal insulation and insulation effect inside the mat, and stacking an electric insulator sheet on the top. In recent years, the demand for automobile seats, cushions, and bedding for patients has increased rapidly, and the industrial field of the heating fabric is rapidly expanding.

The heating fabric is arranged in a suitable distance by arranging metallic conductors along a path such as piping a hot water pipe in an ondol room, covering the cover, and then connecting a power source to heat it.

On the other hand, in the case of the conventional heating fabric, it does not exhibit a predetermined heating characteristic, cannot have a uniform temperature distribution, and has poor adhesion when applied to a fixed surface having a step due to poor flexibility, and has poor thermal insulation performance. There was a problem.

Accordingly, there is an urgent need to develop a heat generating fabric that exhibits excellent heat-insulating performance and excellent adhesion when applied to a fixed surface having a step because it exhibits a predetermined heat generation characteristic, has a uniform temperature distribution, and has excellent flexibility. .

KR 10-1987-003950 A (Publication date: 1987.05.06)

The present invention has been devised to solve the problems as described above, and the problem to be solved by the present invention is to apply a fixed surface having a step difference because it exhibits a predetermined heating characteristic, has a uniform temperature distribution, and has excellent flexibility. It is to provide a heat generating fabric that exhibits an excellent effect at the same time as excellent adhesion and heat insulation performance.

In order to solve the above-described problems, the present invention provides a heating fabric comprising carbon-based fibers that generate heat when a current is applied.

According to one embodiment of the invention, the carbon-based fiber may have a resistance of 10 ~ 500kΩ.

In addition, the carbon-based fiber may have a resistance of 100 ~ 450kΩ.

In addition, the carbon-based fiber may have a far-infrared emissivity at a wavelength of 5 to 20 μm or more, and a far-infrared radiation energy at 30 to 45 ° C. may be 1.0 × 10 ² W / m 2 · µm or more.

In addition, when the 220V AC voltage is applied, the time at which the temperature of the heating fabric becomes 40 ° C or higher may be 30 seconds to 5 minutes.

In addition, when a 220V AC voltage is applied, the time at which the temperature of the heating fabric becomes 70 ° C or higher may be 10 minutes to 60 minutes.

In addition, the carbon-based fiber may be provided with a carbon doped layer including fibers and carbon particles formed on at least a portion of the surface of the fiber and fixed to the binder.

In addition, the heat generating fabric may include at least one or more connecting portions through which current flows from the outside.

Also, the slope; And weft; and may include the carbon-based fiber in any one or more of the warp and weft.

In addition, one or more strands of the carbon-based fibers may be disposed per inch of excretion in one or more of the warp and weft yarns.

In addition, the warp yarns and weft yarns may be arranged to be interlocked, or the weft yarns may be disposed on the upper or lower slopes.

In addition, it may further include a ground yarn provided to weave the warp and weft.

In addition, the ground yarn may have a fineness of 30 to 350 De.

In addition, the ground yarn may have a melting point or a softening point of 190 ° C or less.

In addition, the warp and weft may each independently have a fineness of 100 to 3,500 De.

In addition, the warp and weft yarns are each independently selected from the group consisting of a conductive fiber and a polyester fiber, and one or more selected from the group consisting of a copper wire, a nichrome wire, an iron chrome wire, a copper nickel wire, and a stainless steel wire. It may further include a species.

In addition, when the warp and weft yarns are arranged to be intertwined, the warp yarns may be 1 to 60 strands per 1 inch in the warp direction, and the weft yarns per 1 inch in the weft direction may include 1 to 60 strands, and the weft yarns are disposed at the upper or lower sides of the warp yarns. When is disposed, it may include 1 to 30 strands of the inclination per 1 inch in the warp direction, and 1 to 30 strands of the weft per 1 inch in the weft direction.

The heating fabric according to the present invention exhibits a predetermined heating characteristic, has a uniform temperature distribution, is excellent in flexibility, and when applied to a fixed surface having a step, it has excellent adhesion and excellent insulating performance.

1 is a cross-sectional view of a heating fabric according to an embodiment of the present invention,
Figure 2 is a top view showing the arrangement of the ground yarn in the heating fabric according to an embodiment of the present invention,
3 is a top view showing the arrangement of the ground yarn in the heating fabric according to another embodiment of the present invention, and
Figure 4 is a top view showing the arrangement of the ground yarn in the heating fabric according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein.

The heating fabric according to an embodiment of the present invention is implemented by including carbon-based fibers that generate heat when current is applied.

The carbon-based fiber may have a resistance of 10 to 500 kΩ, a resistance of 100 to 450 kΩ, preferably a resistance of 200 to 430 kΩ, and more preferably a resistance of 300 to 400 kΩ. If the resistance of the carbon-based fiber is less than 10kΩ, a problem may occur that is not uniformly cured to generate heat above a desired level, and if the resistance exceeds 500kΩ, a problem that cannot generate heat at a desired level when a current is applied Can occur.

On the other hand, the heating fabric according to the present invention can achieve the effect that the temperature is transferred to the interior of the object for the purpose of temperature increase due to the far-infrared emission of the carbon-based fiber as it contains a carbon-based fiber. Specifically, the carbon-based fiber may have a far-infrared emissivity at a wavelength of 5 to 20 μm of 70% or more, preferably a far-infrared emissivity at a wavelength of 5 to 20 μm of 80% or more, and more preferably 5 to 20 The far-infrared emissivity at a wavelength of µm may be 90% or more. If the far-infrared emissivity at a wavelength of 5 to 20 μm of the carbon-based fiber is less than 70%, a problem may occur in that the temperature is not transmitted to the inside of the object for the purpose of raising the temperature.

In addition, the carbon-based fiber may have a far-infrared radiation energy at 30 to 45 ° C of 1 × 10 ² W / ㎡ · µm or more, and a far-infrared radiation energy at 30 to 45 ° C of 2 × 10 ² W / ㎡ · µm or more. It may be, more preferably, the far infrared radiation energy at 30 ~ 45 ℃ 3 × 10 ² W / ㎡ · µm or more. If the far-infrared radiation energy at 30 ~ 45 ℃ of the carbon-based fiber is less than 1.0 × 10 ² W / ㎡ · ㎛ may cause a problem that the temperature is not transmitted to the interior of the object for the purpose of temperature increase.

In addition, the carbon-based fiber may have an elastic modulus of 80 to 170 g / d, preferably an elastic modulus of 90 to 160 g / d, and more preferably an elastic modulus of 100 to 150 g / d. If the modulus of elasticity of the carbon-based fiber is less than 80 g / d, the fabric may be stretched and stretched even with a small force, and a problem may arise. When the modulus of elasticity exceeds 170 g / d, the fixed surface having a step as flexibility decreases When applied to the adhesion may be reduced.

Further, the carbon-based fiber may have a fineness of 100 to 3,500 De, more preferably a fineness of 150 to 3,000 De. If the fineness of the carbon-based fiber is less than 100 De, heat generation performance may be deteriorated. If the fineness exceeds 3,500 De, adhesion may be reduced when applied to a fixed surface having a step as flexibility decreases.

Meanwhile, the carbon-based fibers include carbon fibers alone, fibers having carbon particles on at least a portion of the surface, fibers mixed with carbon fibers, fibers covered with carbon fibers, and carbon fibers coated with a predetermined resin on at least a portion of the surface. , It means to include all fibers containing carbon components.

Preferably, the carbon-based fiber provided in the heating fabric according to the present invention may include a fiber and a carbon doping layer formed on at least a portion of the surface of the fiber.

In this case, the fiber can be used without limitation as long as it is a fiber that can be used in the art, preferably polyester-based fiber, polyolefin-based fiber, polyamide-based fiber, and acrylate-based fiber, and more preferably Although polyester-based fibers can be used, any component capable of satisfying the properties of the above-described carbon-based fibers including the carbon doped layer can be used without limitation, so the present invention is not particularly limited.

In addition, as the carbon doped layer may be formed through a carbon doping layer forming composition including carbon particles and a binder, the carbon doped layer may include carbon particles fixedly provided on the binder and the binder.

The binder may be used without limitation as long as it is a binder that can be used to fix the particles of the fixing in the art. Preferably, the binder may include at least one selected from the group consisting of natural binders, inorganic binders, and organic binders. More preferably, it may include at least one selected from the group consisting of inorganic binders and organic binders, and even more preferably, acrylic binders, urethane binders, fluorine binders, silicone binders, styrene binders, epoxy binders and phenolic binders. It may include one or more selected from the group consisting of binders, and more preferably, using an acrylic binder and / or a urethane-based binder among organic binders, the carbon-based fiber exhibits the above-described physical properties and thus the heating fabric according to the present invention. In terms of expressing the desired effect It may be more advantageous.

In addition, the carbon particles can be used without limitation as long as it is a carbon material commonly used in the art, preferably carbon nanotubes, graphene, carbon fiber, carbon black, earth graphite, impression graphite, expanded graphite and artificial graphite It may include one or more selected from the group consisting of, more preferably, carbon nanotubes, graphene, carbon fiber, carbon black, containing one or more selected from the group consisting of artificial graphite and impression graphite, carbon The fibrous fiber exhibits the above-described properties, so that the heating fabric according to the present invention may be more advantageous in terms of exerting the desired effect.

In addition, the carbon doping layer forming composition may further include at least one selected from the group consisting of a solvent, a dispersant, a thickener and a coupling agent.

At this time, as the solvent, dispersant, thickener and coupling agent can be used without limitation as long as they are solvents, dispersants, thickeners and coupling agents that can be used in the art, respectively, the present invention is not particularly limited.

On the other hand, the heating fabric according to an embodiment of the present invention is inclined; And weft; includes, it may be implemented by including the carbon-based fibers in any one or more of the warp and weft.

Before explaining the inclination and weft of the heating fabric according to the present invention, the arrangement width of the above-described carbon-based fibers in the heating fabric will be described.

The carbon-based fiber may be included in any one or more of the warp and weft yarns, preferably both the warp and weft yarns. In addition, the carbon-based fibers may be arranged in at least one strand per 1 inch of excretion direction of at least one of the warp and weft, preferably at least two strands. If the carbon-based fibers are arranged in less than one strand per 1 inch of excretion direction in any one of the warp and weft, it may not have a uniform temperature distribution at a desired level, and a problem of deterioration in insulation performance may occur.

In addition, the heating fabric according to another embodiment of the present invention may further include a conductive fiber in any one or more of the warp and weft, preferably both the warp and weft. In this case, the conductive fiber and the carbon-based fiber may be disposed in total of 1 strand or more, preferably 2 strands or more per 1 inch of excretion direction of at least one of the warp and weft yarns. If the conductive fiber and the carbon-based fiber are disposed in less than one strand per 1 inch of excretion direction in any one of the warp and weft yarns, it is impossible to have a uniform temperature distribution at a desired level, and a problem of deterioration in insulation performance Can occur.

On the other hand, the conductive fiber may be used without limitation as long as it is a conductive fiber that can be commonly used in the art, preferably at least one selected from the group consisting of a copper wire, a nichrome wire, an iron chrome wire, a copper nickel wire, and a stainless steel wire. It may include.

Hereinafter, the inclination, the weft yarn and the heating fabric of the heating fabric according to the present invention will be described.

The inclination may include a carbon-based fiber as described above, and may further include a conductive fiber, thereby electrically communicating with a carbon-based fiber and / or a conductive fiber that may be further included in the weft yarns described below. It can exert a fever function.

On the other hand, the inclination may further include a polyester fiber in addition to the above-described carbon-based fibers and conductive fibers.

The inclination is not limited as long as the fineness can be conventionally used in the art, preferably fineness of 100 to 3,500 De, more preferably fineness of 150 to 3,000 De. If the fineness of the inclination is less than 100 De, heat generation performance may decrease as the thermal insulation performance decreases, and when the fineness exceeds 3,500 De, the adhesiveness decreases when applied to a fixed surface having a step as flexibility decreases. Can be.

In addition, as described above, the weft yarn may include a carbon-based fiber, and may further include a conductive fiber, so that the carbon-based fiber and / or a conductive fiber that may be further included may be included in the above-described inclination. It can communicate with to express the fever function.

Meanwhile, the weft yarn may further include a polyester fiber in addition to the above-described carbon fiber and conductive fiber.

The weft yarn is not limited as long as it can be used in the art, and preferably, the fineness may be 100 to 3,500 De, more preferably 150 to 3,000 De. If the fineness of the weft yarn is less than 100 De, heat generation performance may decrease as the thermal insulation performance decreases. If the fineness exceeds 3,500 De, the adhesiveness decreases when applied to a fixed surface having a step as the flexibility decreases. Can be.

In addition, the heating fabric may further include a ground yarn, and the ground yarn may be provided to weave the warp and weft yarns.

The ground yarn may be used without limitation as long as it is a fiber that can be commonly used in the art, and preferably may include at least one selected from the group consisting of nylon fiber and PET fiber.

In addition, the ground yarn may have a melting point or softening point lower than that of the warp and weft yarns described above, preferably 190 ° C or less, and more preferably melting point or softening point 185 ° C or less. If the melting point or softening point of the ground yarn exceeds 190 ° C., it is impossible to selectively fuse only the ground yarn through a predetermined heat treatment, and the inclined and weft yarns cannot be uniformly melted or softened first, thereby exhibiting a uniform temperature distribution. Can occur. Accordingly, the ground yarn provided in the heating fabric may be provided in a fibrous form, or may be provided as a fused portion fused through a predetermined heat treatment.

The ground yarn is not limited as long as it has a fineness that can be used in the art, and preferably has a fineness of 30 to 350 De, more preferably a fineness of 50 to 300 De. If the fineness of the ground yarn is less than 30 De, there may be a problem in that the heat generation performance may be deteriorated because the insulation performance cannot be expressed at a desired level, and when the fineness exceeds 350 De, the fixed surface having a step is reduced as flexibility decreases. When applied, adhesiveness may deteriorate.

On the other hand, the heating fabric according to an embodiment of the present invention, may include at least one connection portion to which the current is applied.

The connecting portion can be implemented without limitation if it is a material that can be used as a connecting portion in the art, and preferably may include at least one selected from the group consisting of the above-described carbon-based fibers and conductive fibers.

In addition, the connecting portion may be provided on at least one end of at least one of the inclined and weft yarns, preferably at both ends of at least one of the inclined and weft yarns, or may be provided separately outside extending from the heating element. have.

As the heating fabric according to the present invention is provided with the connecting portion, the above-described carbon-based fibers and / or conductive fibers that may be further included in the heating fabric when electric current is applied to each other are in electrical communication with each other to express a heating function. .

On the other hand, in the heating fabric according to an embodiment of the present invention, when a 220V AC voltage is applied, the time at which the temperature of the heating fabric becomes 40 ° C or more may be 30 seconds to 5 minutes, preferably 35 seconds to 4 minutes, , More preferably, it may be 45 seconds to 3 minutes. In addition, in the heating fabric according to an embodiment of the present invention, when a 220V AC voltage is applied, the time at which the temperature of the heating fabric becomes 70 ° C or higher may be 10 to 60 minutes, preferably 13 to 50 minutes, More preferably, it may be 15 to 35 minutes. If the time at which the temperature of the heating element becomes more than 40 ° C is less than 30 seconds, or if the time at which the temperature of the heating element becomes 70 ° C or more is less than 10 minutes, damage to the heating element occurs due to excessive heating temperature, and mechanical properties This can be deteriorated, and if it exceeds 5 minutes, or if the time at which the temperature of the heating element becomes 70 ° C. or more exceeds 60 minutes, the heat generation characteristics cannot be expressed at a desired level and a uniform temperature distribution cannot be achieved. Problems may arise.

Meanwhile, the warp yarn, the weft yarn and the ground yarn provided in the heating fabric according to an embodiment of the present invention may be arranged such that the warp yarn and the weft yarn are interwoven, and a ground yarn may be provided to interweave the warp yarn and the weft yarn.

First, the tissue of the fabric may be made by any one method selected from the group consisting of plain weave, twill weave, double weave and double weave.

When the plain weave, twill weave, and embroidery weave are called ternary tissues, the specific weaving method of each ternary tissue is based on a conventional weaving method, and the fabric may be changed by modifying the tissues based on the ternary tissue or by combining several tissues. There are, for example, two-sided jobs, basket jobs, etc. as changeable plain jobs, new talents, talented jobs, non-performance jobs, mountain-type jobs, etc. as changeable jobs, anomalous jobs, mediator jobs, extended jobs, and training jobs. There is this. The double weaving is a method of weaving a fabric in which either one of the warp yarns or weft yarns is doubled or both are double, and a specific method may be a normal double weaving method. However, it is not limited to the description of the fabric tissue.

When the inclined and weft yarns provided in the heating fabric of the present invention are arranged to interweave, and the ground yarn is provided to weave the inclined yarns and weft yarns, the inclination is 1 to 60 strands per inch in the inclined direction, and the inclined yarn in 1 inch in the weft direction The weft yarn may include 1 to 60 strands, preferably 3 to 58 strands of the incline per 1 inch in the warp direction, and 3 to 58 strands of the weft per 1 inch in the weft direction. If the inclination is less than 1 strand per 1 inch in the warp direction, or if the weft yarn is less than 1 strand per 1 inch in the weft direction, the heat generation performance may deteriorate as the desired level of thermal insulation performance cannot be expressed and uniform temperature distribution When the inclination exceeds 60 strands per 1 inch in the warp direction or the weft yarn exceeds 60 strands per 1 inch in the weft direction, adhesiveness may deteriorate when applied to a fixed surface having a step as flexibility decreases.

In addition, as shown in Figure 1, the inclined 10, the weft yarn 20 and the ground yarn 30 provided in the heating fabric 100 according to another embodiment of the present invention, the upper slope (10) Alternatively, the weft yarn 20 is disposed at the bottom, and the ground yarn 30 may be provided to interweave the warp yarns 10 and the weft yarn 20 as shown in FIGS. 1 to 4.

When weft yarns are disposed on the upper or lower slopes provided in the heating fabric of the present invention, and ground yarns are provided to interweave the warp yarns and the weft yarns, the inclination is 1 to 30 strands per inch in the inclined direction, and The weft yarn may include 1 to 30 strands, preferably 3 to 25 strands of the incline per 1 inch in the warp direction, and 3 to 25 strands of the weft per 1 inch in the weft direction. If the inclination is less than 1 strand per 1 inch in the warp direction, or if the weft yarn is less than 1 strand per 1 inch in the weft direction, the heat generation performance may deteriorate as the desired level of thermal insulation performance cannot be expressed and uniform temperature distribution When the inclination exceeds 30 strands per 1 inch in the warp direction or the weft yarn exceeds 30 strands per 1 inch in the weft direction, adhesiveness may decrease when applied to a fixed surface having a step as flexibility decreases.

The heating fabric according to the present invention exhibits a predetermined heating characteristic, has a uniform temperature distribution, is excellent in flexibility, and when applied to a fixed surface having a step, it has excellent adhesion and excellent insulating performance.

Hereinafter, the present invention will be described through the following examples. At this time, the following examples are only presented to illustrate the invention, and the scope of the present invention is not limited by the following examples.

[ Example ]

Example  1: Preparation of heating fabric

First, carbon-based fibers (CF1500, Vico Co., Ltd.) having a fineness of 1,500 De were prepared by providing a carbon doping layer containing carbon particles fixed to an acrylic binder and a urethane-based binder on a PET fiber surface. At this time, the resistance of the carbon-based fiber is 370 kΩ, the far-infrared emissivity at a wavelength of 5 to 20 μm measured according to KCL-FIR-1005 is 90.1%, and the far-infrared radiation energy at 40 ° C. is 3.63 × 10 ² W / ㎡ · The modulus of elasticity was 127 g / d.

Then, polyester fibers with a melting point of 260 ° C and a fineness of 1,000 De were supplied to the warp yarns, and polyester fibers with a melting point of 260 ° C and a fineness of 1,000 De were supplied as weft yarns, but the carbon-based fibers were 3 per inch of weft excretion direction. The strands were arranged so that the weft yarns were passed through the lower slopes, and the ground yarns were supplied with LM fibers having a melting point of 170 ° C and a fineness of 75 De, so that the warp yarns and the weft yarns were woven as shown in FIG. A fabric was prepared so that a conductive copper wire, which is a conductive fiber, is disposed as a connecting portion to the portion. At this time, 15 strands of the incline per 1 inch in the oblique direction were arranged, and 15 strands of the weft per 1 inch in the weft direction were disposed. Then, heat treatment was performed at a temperature of 320 ° C. for 1 second to fuse the ground yarn to prepare a heating fabric.

Example  2 to 16 and Comparative example  1 to 2

Prepared and manufactured in the same manner as in Example 1, the resistance of carbon-based fibers, far-infrared emissivity, far-infrared radiation energy, elastic modulus, types of carbon-based fibers, fineness of warp and weft yarn, number of warp and weft yarn per inch, fineness of ground yarn, ground yarn By changing the melting point of the yarn, whether or not the carbon-based fibers are included, heat generating fabrics as shown in Tables 1 to 5 were prepared.

Example  17

It was manufactured in the same manner as in Example 1, but the heating fabric was made of plain weave tissue so that the warp yarns and weft yarns were interwoven. At this time, 30 strands of the warp per 1 inch in the warp direction were disposed, and 30 strands of the weft per 1 inch of weft direction were disposed.

Example  18 ~ 21

Prepared in the same manner as in Example 17, the resistance of the carbon-based fiber, far-infrared emissivity, far-infrared radiation energy and modulus of elasticity were changed to prepare a heating fabric as shown in the following table.

< Experimental Example 1: 40 ℃  Measurement of arrival time>

For the heat generating fabrics prepared according to the Examples and Comparative Examples, after applying 220V AC voltage, the temperature of any 10 points on the heating fabrics prepared according to the Examples and Comparative Examples was measured, and the average value was calculated to calculate the temperature Table 1 to Table 5 are measured by measuring the time when the average value of 40 ° C. is reached.

< Experimental Example  2: Evaluation of heat uniformity>

For the heat-generating fabric prepared according to the above Examples and Comparative Examples, after measuring the temperature of each point on any 20 points on the heat-generating fabric, the error between the highest and lowest temperatures was measured by Equation 1 below. . At this time, a low error means that a uniform heating characteristic is expressed, and a high error means that a uniform heating characteristic is not expressed.

[Equation 1]

Temperature error (%) = (Maximum temperature (℃)-Minimum temperature (℃)) / (Maximum temperature (℃)) × 100 (%)

< Experimental Example  3: Adhesion evaluation>

A fixed surface manufactured in the form of a staircase so that a surface having a horizontal, vertical, and thickness of 3,000 mm × 4,000 mm × 3 mm on one side has a step difference of 30 cm. After adhering to cover the, measuring the temperature of each point on any 20 points on the fixed surface, and then measuring the error between the highest and lowest temperatures by Equation 1 below. At this time, a low error indicates excellent adhesion to the fixed surface, and a high error indicates poor adhesion to the fixed surface.

[Equation 1]

Temperature error (%) = (Maximum temperature (℃)-Minimum temperature (℃)) / (Maximum temperature (℃)) × 100 (%)

< Experimental Example  4>

The lateral form is 2,000 mm in length and 2,000 mm in length, so that it can be joined to a partition of the gang form body in a gang form body made of a tetrahedron without top and bottom, which is 2,500 mm x 3,000 mm x 3 mm in thickness and width. After adhering the heat-generating fabric prepared through Examples and Comparative Examples, after curing the concrete for 9 hours at a temperature of 10 ° C below zero, the following physical properties were measured and are shown in Tables 1 to 5 below.

1. Evaluation of heating performance

When curing concrete, the temperature of the iron plate attached to the gang foam was measured to evaluate the heat generation performance.

At this time, a high temperature indicates excellent heat generation performance, and a low temperature indicates a low heat generation performance.

2. Concrete internal curing evaluation (internal temperature rise evaluation)

After dividing each of the cured concretes in half in the vertical direction, a sensory evaluation was performed on the uniformity of concrete curing by 10 experienced persons over 15 years in the field, and the average value after evaluation through the 7-point scale The internal curing degree of concrete was evaluated by measurement.

division Example
One Example
2 Example
3 Example
4 Example
5 slope Polyester fiber fineness (De) 1000 1000 1000 1000 1000 Inclined strands per inch 15 15 15 15 15 Weft Polyester fiber fineness (De) 1000 1000 1000 1000 1000 Car
example
system
island
U Fineness (De) 1500 1500 1500 1500 1500 Resistance (KΩ) 370 5 100 450 550 Far infrared ray emissivity (%) 90.1 88.1 90 90.3 90.5 Far infrared radiation energy (× 10 ² W / ㎡ · ㎛) 3.63 3.13 3.58 3.67 3.69 Elastic modulus (g / d) 127 68 90 158 184 Batch width (number of strands per inch) 3 3 3 3 3 Number of weft strands per inch 15 15 15 15 15 Ground company Melting point (℃) 170 170 170 170 170 Fineness (De) 75 75 75 75 75 When 220V AC voltage is applied
40 ℃ arrival time 2 minute, 43 seconds Within 30 seconds 44 seconds 3 minute, 17 seconds 4 minutes Temperature error (%) 7.9 26 6.4 9.6 53.4 Adhesion evaluation, temperature error (%) 9.5 30 6.9 9.8 88.3 Heating performance evaluation (℃) 63 Over 100 80 52 43 Internal temperature rise evaluation 6.8 2.1 6.5 6.3 5.5

division Example
6 ¹⁾ Example
7 Example
8 Example
9 Example
10 slope Polyester fiber fineness (De) 1000 1000 50 150 3000 Inclined strands per inch 15 15 15 15 15 Weft Polyester fiber fineness (De) 1000 1000 50 150 3000 Car
example
system
island
U Fineness (De) 1500 1500 50 150 3000 Resistance (KΩ) 0.00005 350 320 330 350 Far infrared ray emissivity (%) 87.8 90.1 90.1 90.1 90.1 Far infrared radiation energy
(× 10 ² W / ㎡ · ㎛) 3.09 3.62 3.62 3.62 3.62 Elastic modulus (g / d) 2700 127 120 122 150 Batch width (number of strands per inch) 3 0.5 3 3 3 Number of weft strands per inch 15 15 15 15 15 Ground
Rare Melting point (℃) 170 170 170 170 170 Fineness (De) 75 75 75 75 75 When 220V AC voltage is applied
40 ℃ arrival time Within 30 seconds Over 5 minutes Over 5 minutes 2 minute, 52 seconds 2 minute, 45 seconds Temperature error (%) 42 28.5 75 8.4 8.3 Adhesion evaluation, temperature error (%) 43 31.4 85 9.8 8.8 Heating performance evaluation (℃) Over 100 35 20 59 60 Internal temperature rise evaluation One 3.2 One 6.4 6.7 1) Example 6 shows that the PET fiber and the carbon fiber not containing the binder were used alone.

division Example
11 Example
12 Example
13 Example
14 Example
15 slope Polyester fiber fineness (De) 4000 1000 1000 1000 1000 Inclined strands per inch 15 0.5 35 15 15 Weft Polyester fiber fineness (De) 4000 1000 1000 1000 1000 Car
example
system
island
U Fineness (De) 4000 1500 1500 1500 1500 Resistance (KΩ) 300 370 370 370 370 Far infrared ray emissivity (%) 90.1 90.1 90.1 90.1 90.1 Far infrared radiation energy (× 10 ² W / ㎡ · ㎛) 3.62 3.63 3.63 3.63 3.63 Elastic modulus (g / d) 127 68 89 158 184 Batch width (number of strands per inch) 3 3 3 3 3 Number of weft strands per inch 15 0.5 35 15 15 Ground
Rare Melting point (℃) 170 170 170 170 170 Fineness (De) 75 75 75 10 450 When 220V AC voltage is applied
40 ℃ arrival time 2 minute, 49 seconds 2 minute, 43 seconds 2 minute, 43 seconds 2 minute, 43 seconds 2 minute, 43 seconds Temperature error (%) 32.7 28.3 8.3 9.3 8.3 Adhesion evaluation, temperature error (%) 53.4 40 41 38.3 46.6 Heating performance evaluation (℃) 58 60 60 49 60 Internal temperature rise evaluation 6 5.5 5.4 5.8 5.4

division Example
16 Example
17 ¹⁾ Example
18 ²⁾ Example
19 ³⁾ Example
20 ⁴⁾ slope Polyester fiber fineness (De) 1000 1000 1000 1000 1000 Inclined strands per inch 15 30 30 30 30 Weft Polyester fiber fineness (De) 1000 1000 1000 1000 1000 Car
example
system
island
U Fineness (De) 1500 1500 1500 1500 1500 Resistance (KΩ) 370 370 5 100 450 Far infrared ray emissivity (%) 90.1 90.1 88.1 90 90.3 Far infrared radiation energy
(× 10 ² W / ㎡ · ㎛) 3.63 3.63 3.13 3.58 3.67 Elastic modulus (g / d) 127 127 68 90 158 Batch width (number of strands per inch) 3 3 3 3 3 Number of weft strands per inch 15 30 30 30 30 Ground
Rare Melting point (℃) 260 - - - - Fineness (De) 75 - - - - When 220V AC voltage is applied
40 ℃ arrival time 2 minute, 43 seconds 2 minute, 43 seconds Within 30 seconds 44 seconds 3 minute, 17 seconds Temperature error (%) 28.3 7.8 39 6.4 9.6 Adhesion evaluation, temperature error (%) 50.3 8.4 10 6.6 9.8 Heating performance evaluation (℃) 60 64 Over 100 80 52 Internal temperature rise evaluation 4.4 6.7 2.2 6.5 6.4 1) Example 17 shows that the warp and weft yarns are made of plain weave tissue to interweave
2) Example 18 shows that the warp and weft yarns are made of plain weave so that they interweave.
3) Example 19 shows that the warp and weft yarns are made of plain weave so as to interweave.
4) Example 20 shows that the warp and weft yarns are made of plain weave so as to interweave.

division Example 21 ^{1 )} Comparative Example 1 Comparative Example 2 ^{2 )} slope Polyester fiber fineness (De) 1000 1000 1000 Inclined strands per inch 30 15 15 Weft Polyester fiber fineness (De) 1000 1000 1000 Car
example
system
island
U Fineness (De) 1500 - 1500 Resistance (KΩ) 550 - 0.2 Far infrared ray emissivity (%) 90.5 - - Far infrared radiation energy
(× 10 ² W / ㎡ · ㎛) 3.69 - - Elastic modulus (g / d) 184 - - Batch width (number of strands per inch) 3 - 15 Number of weft strands per inch 30 15 15 Ground
Rare Melting point (℃) - 170 170 Fineness (De) - 75 75 When 220V AC voltage is applied
40 ℃ arrival time 4 minutes - Within 30 seconds Temperature error (%) 53.4 - 10 Adhesion evaluation, temperature error (%) 81.3 - 10 Heating performance evaluation (℃) 43 -9 Over 100 Internal temperature rise evaluation 5.3 1.6 4.3 1) Example 21 shows that the warp and weft yarns are made of plain weave so as to interweave.
2) Comparative Example 2 indicates that nichrome wire was used instead of carbon-based fibers for each of the warp and weft yarns.

As can be seen from Tables 1 to 5, the resistance of the carbon-based fibers provided in the heating fabric according to the present invention, far-infrared emissivity, far-infrared radiation energy, anion emission rate, elastic modulus, types of carbon-based fibers, slope and fineness of weft, 1 Examples 1, 3, 4, 9, 10, 17, 19 and 20 satisfying both the warp and weft count per inch, the fineness of the ground yarn, the melting point of the ground yarn, the inclusion of carbon fibers, and the arrangement of the warp and weft yarns, etc. Compared to Examples 2, 5 to 8, 11 to 16, 18, 21 and Comparative Examples 1 to 2, even one of which is missing, the temperature 40 ° C reaching time is faster, and the heat generating fabric exhibits an appropriate temperature, and has a uniform temperature distribution. , It can be confirmed that the temperature can be transferred to the inside of the inner box for the purpose of raising the temperature, and at the same time, all the effects of excellent adhesion are simultaneously exhibited.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention can add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but this will also be considered to be within the scope of the present invention.

100: heating fabric
10: slope
20: Weft
30: Ground Company

Claims (17)

When the electric current is applied, it contains carbon-based fibers with a fineness of 150 to 3,000De.
When 220V AC voltage is applied,
The time at which the temperature becomes 40 ° C or higher is 30 seconds to 5 minutes,
Fever fabric with a temperature of 10 ~ 60 minutes for the temperature to reach 70 ℃ or higher. According to claim 1,
The carbon-based fiber is a heating fabric having a resistance of 10 ~ 500kΩ. According to claim 1,
The carbon-based fiber is a heat generating fabric having a resistance of 100 ~ 450kΩ. According to claim 1,
The carbon-based fiber has a far-infrared emissivity at a wavelength of 5 ~ 20㎛ 70% or more, a far-infrared radiation energy at 30 ~ 45 ℃ 1.0 × 10 ² W / ㎡ · µm or more heat generating fabric. delete delete The method of claim 1, wherein the carbon-based fiber,
Fiber and,
A heat generating fabric having a carbon doping layer formed on at least a portion of the surface of the fiber and including a binder and carbon particles fixedly provided on the binder. According to claim 1,
The heating fabric is a heating fabric comprising at least one or more connecting portions through which current flows from the outside. According to claim 1,
slope; And
Including weft;
A heating fabric comprising the carbon-based fibers in any one or more of the warp and weft. The method of claim 9,
A heat generating fabric in which at least one strand of the carbon-based fibers is disposed per inch of excretion in at least one of the warp and weft yarns. The method of claim 9,
The heating fabric is disposed so that the warp and weft yarns are interwoven, or the weft yarns are disposed at the upper or lower slopes. The method of claim 11,
The heating fabric further comprises a ground yarn provided to weave the warp and weft yarns. The method of claim 12,
The ground yarn is a heat generating fabric having a fineness of 30 to 350 De. The method of claim 12,
The ground yarn is a fever fabric having a melting point or a softening point of 190 ° C or less. The method of claim 9,
The warp and weft yarns are independently heat generating fabrics having a fineness of 150 to 3,000 De. The method of claim 9,
The warp and weft yarns are each independently a conductive fiber including at least one selected from the group consisting of a copper wire, a nichrome wire, an iron chrome wire, a copper nickel wire, and a stainless steel wire, and one or more kinds selected from the group consisting of polyester fibers. Fever fabric further comprising. The method of claim 11,
When the warp and weft yarns are arranged to interweave, the warp yarns contain 1 to 60 strands per 1 inch in the warp direction and 1 to 60 strands of the weft yarns per inch in the weft direction,
When the weft is disposed on the upper or lower slope, the heating fabric includes 1 to 30 strands of the warp per 1 inch in the warp direction and 1 to 30 strands of the weft per 1 inch in the warp direction.

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