KR20120029456A - Resistance-thermometer grid-heater - Google Patents

Abstract

PURPOSE: A thermo-resistance heating net is provided to offer uniform temperature distribution by arranging an external conductor line as a parallel mode. CONSTITUTION: Warp threads(1) are opened to top and bottom groups. Weft threads(2) are inserted into the warp threads opened by a picking motion. A body supports the weft threads to the front of fabric. A beating motion completes a fibrous tissue of the weft threads and the warp threads. The warp threads are arranged in both side of the fabric. The weft threads are a heating line of a cooling line type consisting of an internal conductive line, a thermo-plastic resin, and an external conductive line. The internal conductive line is one among platinum, copper, nickel. The fabric is coated by electrical insulation materials.

Description

Resistance resistance heating network {Resistance-Thermometer Grid-Heater}

The present invention relates to a temperature resistance resistance heating network used for filling of electric yoke, electric blanket, electric blanket, electric blanket and the like.

Thermal heating wires used in existing electric wires, blankets, electric blankets, and electric blankets are installed in concentric circles with inner conductor wires, thermal insulation layers, outer conductor wires, and electrical insulation sheaths on a central chamber. It is a structure, and it is a planar channeling mechanism which arrange | positioned the distance between lines of the said thermal heating wire in "S" shape equally.

However, the arrangement of the above-described thermosensitive heating wire is an electric series structure, and the series structure is one long line having a continuous load length, and since current flows only on one line, heat collection may be caused by hot spots due to external stress. There is this.

However, the above-mentioned thermosensitive layer is interposed through a thermosensitive layer having a characteristic in which the impedance changes in response to temperature, but the change in temperature and alternating impedance of the thermosensitive layer is the impedance of the entire length between the inner conductor line, which is a heating wire, and the outer conductor line, which is a thermal sensing line. Since the values are not representative of any local elements, hot spots may occur due to stress or thermal shock on heating lines arranged in series, and overheating may occur. Therefore, an object of the present invention is to provide a uniform temperature distribution by arranging an outer conductor line, which is a heating wire, in a parallel manner.

In order to achieve the above object, the warp yarns are opened in the upper and lower groups by the opening motion of the loom of heaving looms, the weft yarns are infiltrated by the north needle motion, and the weft yarns enclosed in the openings are moved to the front of the woven fabric. Weaving is produced by successive repetition of body needle movement to complete the organization of warp and weft yarns to form a fabric, and the weft yarn is a continuous thermal arrangement consisting of concentric circles of inner conductor line, thermoplastic resin and outer conductor line sequentially on the center thread. It is a wire heating wire, characterized in that the warp yarns of several strands on both sides of the fabric is replaced by an electrical conductor wire, and coated with an electrically insulating material on the fabric.

The electrical parallel structure of the electric heating element can realize the uniform temperature distribution of the surface heating without the overheating caused by the hot spot due to the dispersion effect of the load current.

1 is a side view of the thermosensitive wire heating wire of the RTD heating network according to the present invention broken in a single shape.
Figure 2 is an embodiment according to the present invention, the tissue structure of the weft inserted a thermal wire type heating wire of the RTD heating network.
Figure 3 is another embodiment according to the present invention, the organization of the knitted fabric inserted weft, which is a thermal wire heating wire of the RTD heating network.
Figure 4 is a state diagram measured by measuring the temperature of the surface temperature of the RTD heating network according to the present invention.

The present invention is a temperature resistance resistance heating network, the opening of the warp yarn in the upper and lower groups by the opening motion of the weaving heald, the inside of the opened warp infiltrated the weft by the north needle movement, the body weaved weft yarn in the opening The fabric is formed by continuous weaving of the body needle movement to complete the warp and weft tissue by pushing it to the front of the fabric, and the weft consists of concentric circles of inner conductor line, thermoplastic resin and outer conductor line sequentially on the center thread. It is a continuous heat-sensitive heating wire, characterized in that a plurality of strands of warp on both sides of the fabric is replaced by an electrical conductor wire, and coated with an electrically insulating material on the fabric.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Textile fabrics are formed by supporting the threads from each other by weaving or knitting from the threads. Weaving and knitting methods in which the thread is guided up and down the adjacent yarns are different.

Weaving is a fabric in which warp and weft cross each other up and down to form a flat body of any width. It is woven into looms and is made into various fabrics depending on how the warp and weft intersect.

The main motion of the weaving process is the shedding motion, which is the process of separating the warp into two layers according to the fabric and forming a tunnel called shed, and weaving the weft through the warp according to the width of the fabric. It consists of a picking motion to pass through and a beating motion to push the weft through the opening to the front of the woven fabric as a body to complete the warp and weft tissue. In order to continue the weaving, the warp is released from the warp beam, and a certain amount of fabric is removed from the weaving area by the required speed and proper tension to the weaving part (let-off) and the required weft spacing, and the fabric is wound on the roller. Take-up is necessary.

1 and 2 is a side view of the thermosensitive heating wire of the RTD heating network according to the present invention in one embodiment, the structure of the fabric is inserted into the weft yarn is a thermal weaving wire of the RTD heating network, The warp yarn 1 is opened in the upper and lower groups by the opening motion of the loom heald, and the carrier enters the weft yarn 2 by the north needle movement through the opened warp yarn, and the inlet side using a latch needle operated at the weft exit side Weaving the carrier with the catch yarn provided from the weft outlet side on the opposite side of the weft and taking out the carrier, and weaving in a continuous repetition of the body needle movement to push the weft yarn encased in the opening until just before, to form a fabric. The warp of the fabric is formed into a blade structure, and the weft yarns are concentrically arranged on the central yarn 21 in order to form an inner conductor line 22, a thermoplastic resin 23, and an outer conductor line 24. A continuous heat-sensitive heat-wire line (20) is configured, and the warp yarns of the multiple strands at both sides of the fabric characterized in that the arrangement is replaced with the electrical conductor wire (3), covered with an electrically insulating material on the fabric.

The electrical conductor wire is preferably formed of the blade structure of the fabric.

The wing tissues are not parallel to each other, and two warp threads are twisted together to form an 8-shaped weft. Thus, a mesh-like crop is formed.

In particular, the outer conductor wires are in contact with each other in the openings in which the electrical conductor wires are twisted with each other, thereby maintaining contact and compressive strength between the electrical conductor wires and the outer conductor wires.

Figure 3 is another embodiment according to the present invention, a knitted tissue organization chart inserted into the weft heating wire of the temperature resistance resistance heating network, the main movement of the knitting sudden movement, the rising and falling movement of the knitting needle, a plurality of opening and closing movement of the knitting needle The warp yarn 1 is made of knitting stitches, a knitted fabric composed of mutual couplings of the knitting rings is formed, and the weft yarns 2 are inserted into the knitted fabric, and the weft yarns are a single continuous line, and the weft yarns are A continuous thermal wire heating line consisting of concentric circles of an inner conductor line, a thermoplastic resin, and an outer conductor line sequentially on a central seal, and an electric conductor line 3 is inserted into and knitted in both sides of the fabric in the warp direction. It is characterized by being coated with an electrically insulating material on the phase.

A warp knitting fabric is a knitting fabric in which a knitting stitch is made in the longitudinal direction by many warp yarns arranged in parallel.

Generally, the warp knitting machine is supported by the carrier shafts over the entire width, the needle arm, slide bar, guide bar, sink bar, etc. are installed by the carrier arm, each carrier shaft protrudes from the machine base to enable forward and backward movement of the warp knitting tool bar. It consists of a configuration that is moved back and forth by a plurality of push rods.

In particular, the Raschel warp knitting machine uses one or two needle knitting needles, and is a warp knitting machine that makes a change knitting structure by many guide bars or jacquard devices. The pattern of the knitted fabric is formed by the vertical lifting operation.

In the knitted fabric, the longitudinally oriented ring of rows in the longitudinal direction is called a wale, and the widthwise direction of the ring in the lateral direction is called a course.

In order to organize the warp knit tissue, the guide bar must be lapping or shogging and swinging.

The warp knitted fabric is a knitted fabric in which a plurality of warp yarns are formed in a wale direction. The knitting principle of the warp knitted fabric is a series of knitting stitches, which are inter looped in the longitudinal direction. Looped knitted tissues are called warp knit tissues.

In general, the knitting principle of a knitted fabric is a knitting tool for steeping movement to feed a needle and a needle for knitting to form a ring with the thread. So-called knitting refers to forming a continuous cloth while floating on the ring.

This is due to the knitting movement of the needle, which is preceded by the sudden movement of continuously supplying the thread to the needle. Needle movements are a combination of two movements. One is the up-and-down movement (or back and forth movement) of the entire needle body, and the other is the opening and closing movement of the hook. It consists of the sudden movement of knitting, the rising and falling movement of the needle, and the opening and closing movement of the needle. Threads do not intersect with each other, but ring-like things are entangled with each other to make a cloth, and this ring is called knitting stitch.

As a specific example, the annular forming element of the Raschel knitting machine consists of a needle, a guide, a stitch comb, a trick plate, and the knitting needle uses a latch needle, The guide is usually injected into the 1-inch block and pressed against the guide bar to supply knitting yarn to the knitting needle, and the stitch comb is usually injected into the 1-inch block to prevent the latch from popping up. And, the trick plate is formed from the top of the trick plate to form a ring shift, and the latch needle moves up and down between the bedding, so the relationship with the needle needle plays a very important role.

The formation of the annulus is carried out in a seven-step sequence by the interaction of four knitting elements: a latch needle, a guide, a stitch comb and a trick plate.

The first stage is the knock-over state, with the latch needle at the lowest position, the stitch comb moving forward and the guide at the front position.

The second stage is the open state of the latch, the latch needle rises, the stitch comb stays in the forward position, grips the thread, and the last loop opens the latch, so the underwrapping is completed.

Step 3 is a latch rising state, and as the latch needle rises, the sphere switching prevents the latch from being closed by the latch wire while opening the latch, and the guide bar performs the back swing.

Step 4 is overlapping, where all the guide bars form a hook at the same time as the back swing ends at the rearmost position, after which the wrapping begins and the stitch comb retreats from the needle.

Step 5 is the holding state of the thread. The thread of the guide bar is caught on the upper part of the needle and slides into the hook. The needle starts to descend, the guide bar overlaps, and then performs a front swing.

Step 6 is a closed state of the latch. As the guide bar swings forward, the latch needle descends, and the ball shift ring supported on the trick plate is placed on the closed latch while closing the latch.

Step 7 is the knock-over position, when the needle is lowered to the lowest position, the sphere shifts out of the needle by the action of the trick plate, a new ring is formed in the hook, and the guide bar starts underwrapping immediately before the knock-over. do.

Knitting tissue of the conductive knitted fabric according to the present invention is composed of the insertion knitted fabric, as a specific embodiment, the knitting operation for each position of the weft-inserted knitted tissue by the Raschel knitting machine is as follows.

Firstly, the weft control unit carries the weft to the front of the knitting needles.

Secondly, the flat needle rises and the guide swings toward the hook.

Third, the knitting control element retreats and the new weft is pulled down onto the knitting control element for the next knitting.

Fourth, the knitting needle is lowered to rust-over.

For example, warp knitting tissues are stitched together by supplying knitting yarn only to the same knitting needle so that the rows of knitting are columnar and do not connect with other wales, thus combining them with other knitting tissues. And the tricot stitch is composed of a single tricot knitting organization composed of one guide bar knitting machine and a plain tricot knitting organization composed of two guide bar knitting machines, and a cord knitting organization (cord stitch) includes a single cord knitting organization organized into a single guide bar knitting machine and a double cordo knitting organization organized into a two guide bar knitting machine.

As another embodiment according to the present invention, Figure 3 is a biaxial structure knitted structure, the insertion yarn is orthogonal orthogonal knitting in the warp knitted fabric, a structure in which the electric conductor line and weft are combined in the ring.

The present invention is a knitted fabric of a RTD heating network which is a two-axis structure knitted fabric, characterized in that the electrical resistance wire which is a continuous weft is inserted and knitted, and the electrical conductor wire is inserted and knitted in the warp direction on both sides of the knitted fabric.

In addition, the present invention is a ring-shaped structure of a multi-axis structure, a structure in which the two axes of the above-mentioned stacking laminated in addition to the bias yarn in the 11 o'clock and 1 o'clock direction, combined, the multi-axis structure knitted composite is excellent in function by combining with the resin You can make an electrical appliance as a material.

The resistance temperature heating network according to the present invention made the knitted material by the knitting technology by the insert-type Raschel knitting machine in order to pursue shape stability and electrical safety.

The electric conductor wire 3 serves as an electrode wire for applying power to an external conductor wire 24 which is an electric resistance wire.

The material of the electrical conductor wire is preferably a copper wire, an aluminum wire, a stainless steel wire, or the like.

The outer conductor wire 24 is an electric resistance wire, and is not particularly limited. For example, metal resistance wire, carbon fiber, metal fiber, silicon carbide fiber, fiber coated with an electrically conductive composite material, and the like are preferable. .

The metal resistance wire is preferably a nickel chromium wire, an iron chromium wire, a copper nickel wire, a stainless steel wire, or the like.

The spiral winding of the outer conductor wire 24 on the center thread adjusts the number of windings of the electric resistance wire between the electric conductor wires arranged on both sides of the fabric and the knitted fabric so as to match the electric resistance, and between the outer conductor wire and the electric conductor wire. The purpose is to reduce the electrical contact resistance by increasing the contact area by crossing the spiral rather than orthogonally.

The material of the central thread of the weft is not particularly limited, but is any one or any one or more of aramid fiber, fluorine fiber, flon fiber, ultra high tensile PVA, nylon, polyester fiber and glass fiber which are general fiber yarns, The weft of the knitted fabric is a continuous line of the starting and ending points of the weft, and the fabric and the knitted fabric may be any one or more of epoxy, polyurethane, silicone, polyester, bitumen, oleoresin, phenol, alkyd and PVC resin. It is characterized by performing an insulation coating process with resin.

In addition, the spiral weaving of the weft yarn is intended to maintain electrical contact resistance against bending and stress between the electrical conductor wires arranged on both sides of the fabric and knitted fabric.

In addition, the fibers coated with the electrically conductive composite material are spirally covered, whereby flex resistance can be improved and mechanical shock can be tolerated. In particular, the fiber coated with the electrically conductive composite material can provide a safe electric heating element.

The electrically conductive composite material is composed of conductive particles and a binder, the conductive particles are carbon-based particles such as carbon nanotubes, conductive carbon black, graphite, and the like, but the binder is not particularly limited, for example, polymer surfactant, acrylic type Resins, vinyl acetate resins, polyester resins, polyamide resins, polyurethane resins, and the like. These binders can be used in any one or two or more kinds.

Alternatively, the carbon nanotubes can be mixed with carbon black to control electrostatic capacitance, which is a conductive property. In other words, the output can be stabilized by conducting conductive paths over a plurality of networks.

The proportion of carbon black is preferably 50 to 500 parts by weight based on 100 parts by weight of carbon nanotubes.

The pretreatment method is not limited to any of the methods for dispersing carbon nanotubes, but for example, cutting of carbon nanotubes by sonication, electrostatic dispersion through functionalization on the outer surface of acid-treated carbon nanotubes, and various solvents Physical and chemical pretreatment through dispersion using surfactants, polymeric materials, and the like can be used.

The chemical method is to introduce a functional group on the surface of the nanotube to form a chemical covalent bond with the binder. In the physical method, although it is only about 5% of the covalent bond strength, the hydrogen bond or semi-bond can be bonded to more positions. Use secondary bonds, such as van der Waals bonds.

Acid treatment typically uses sulfuric acid, nitric acid, and the like, and may be used by mixing sulfuric acid and nitric acid at about 3: 1. Depending on the acid treatment strength, the temperature may be increased or ultrasonic waves may be applied. When a strong acid comes into contact with the carbon nanotubes, the weakest portion of the carbon nanotubes (that is, the highly reactive portions) is the first defect. The defective portion usually contains a carboxyl group (-COOH), a hydroxyl group (-OH), or the like.

Sonication is a simple general method to increase dispersibility by putting carbon nanotubes in a solvent and sonicating.

Among them, the modification by physical method is a method of dispersing carbon nanotubes by using van der Waals force or forming micelles that surround carbon nanotubes with polymer in advance.

In addition, the dry method includes a method of introducing an aldehyde functional group into the carbon nanotubes through plasma treatment, an ozone treatment for functionalizing the terminal and side walls of the carbon nanotubes under a highly reactive ozone atmosphere, and UV-ozone treatment using UV. Through the functionalization of the surface, and the like.

Ozone treatment is a method of functionalizing a multi-walled carbon nanotube surface by introducing functional groups such as hydroxyl group (-OH) and carboxyl group (-COOH) on the surface of the carbon nanotube on the surface of the inert carbon nanotube.

Carbon nanotubes have a very large specific surface area, a ratio of length to diameter, excellent elastic strength, excellent electrical properties and excellent heat transfer characteristics, and thus can secure a safe conductive path as an electric heating element.

Carbon nanotubes have a graphite sheet circularly rolled to a nano-sized diameter, and exhibit the characteristics of electrically metallic and semiconducting materials according to the angle and shape of the graphite sheet. Nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes. The structure of the carbon nanotubes is divided into armchair, zigzag and chiral forms according to the angle of rolling up the graphite plate. Multi-walled carbon nanotubes have electrical conductivity similar to copper. In addition, the hexagonal structure has a cylindrical tube shape, which has about 100 times stronger strength and flexibility than steel.

Carbon nanotubes according to the present invention is not limited, but considering the electrical properties, the armchair structure and multi-walled carbon nanotubes exhibiting metallicity are preferred.

Therefore, the present invention can form a three-dimensional network-shaped conductive layer on the fiber surface with the high electrical conductivity and aspect ratio of the carbon nanotubes.

The average diameter of the carbon nanotubes can be selected, for example, from 0.5 to 1 micrometer, in particular from 1 to 100 nanometers, and the average length is from 1 to 1000 micrometers, in particular from 5 to 300 micrometers. You can choose from.

In addition, since the ratio of the binder allows the carbon nanotubes to adhere smoothly to the fiber surface without completely covering the surface of the carbon nanotubes, for example, 50 to 1600 parts by weight based on 100 parts by weight of the carbon nanotubes. Preferably, it is about 80-1200 weight part.

As a dispersion medium for dispersing carbon nanotubes, for example, general-purpose polar solvents (water, alcohols, amides, cyclic ethers, ketones, etc.), general-purpose hydrophobic solvents (aliphatic or aromatic hydrocarbons, aliphatic ketones, etc.), Or a mixed solvent of the above can be used.

The method of coating the electrically conductive composite material on the fiber is not particularly limited. For example, a method of immersing the fiber in a solution, a sizing device using a touch roller, a doctor, a pad, a spray device, a seal printing device, and the like may be used. And a method of coating the electrically conductive composite material using the coating device.

The coating treatment may be repeated once or a plurality of times.

In the drying step, the liquid medium is removed from the coated fiber and dried, and the carbon nanotubes are uniformly attached to the fiber surface as a conductive layer in a thin layer state.

The carbon nanotube coated fiber according to the present invention is characterized in that the volume resistivity of the coated conductive layer is 10 ⁻² to 10 ³ Pa · cm.

The volume resistivity is a value measured in blocks of the electrically conductive composite material dried in a volume of 1 cubic centimeter.

When the volume resistivity is exceeded, the capacitance increases, and output stabilization as an electric heating element cannot be expected.

 If the volume resistivity is lower than the above, it is impossible to have an electrical parallel structure that produces a dispersion effect of the load current of the electric heating element at a commercial voltage.

The RTD heating network, which is a planar heating element according to the present invention, is an electrical parallel structure of a load, and has a ring structure or a leno structure between an external conductor line and an electric conductor line that withstand the uniform temperature distribution and repetitive bending of the planar heat generation by the effect of distributing load current. With the bound structure, it is possible to provide a safe and durable heating element.

That is, the large difference between the series and parallel, which are the load structures of the electric heating element, depends on the load length between the electrode terminals, and the longer the load length, the more uneven the voltage distribution may be. Since the series structure has a long load length and a current flows only on one line, heat collection by external stress may occur.

Therefore, a uniform temperature distribution can be realized by voltage distribution with a short load length as well as a load current distribution effect by the parallel structure.

Resistance temperature heating network according to the invention is characterized in that the heating element of the form of a fabric or knitted fabric consisting of a thermal wire heating wire.

The thermal wire heating wire is an inner conductor wire having a thermal wire function is wound on a center seal, coated with a thermoplastic resin on the outside of the wound inner conductor wire, and winding the outer conductor wire outside the coated thermoplastic resin. It features.

That is, the thermal wire heating wire is a continuous wire arranged on the outer conductor wire which is a heating wire in order to detect the temperature and transmit it to the control device.

The internal conductor wire described above is preferably a metal wire, a conductive polymer, or the like having a high temperature coefficient of resistance as a function of the thermal wire.

In particular, the metal wire is preferably nickel, copper, iron, aluminum, cobalt, molybdenum, platinum or the like. More preferred are copper, nickel and platinum wires.

The metal increases in electrical resistance in proportion to temperature. It has a so-called positive temperature coefficient. The thermal line is a temperature sensor using the temperature dependency of the resistance value of the metal described above. It is possible to know the temperature by measuring the electrical resistance of the metal.

In addition, the conductive polymer material is formed by dispersing conductive particles such as carbon black and carbon nanotubes into a polymer and coating a material on the fiber. The polymer is polyethylene, polypropylene, ethylene-vinyl acetate copolymer, silicone, epoxy, urethane, etc. This is preferred.

Therefore, the internal conductor wire 22 of the RTD heating network composed of a thermosensitive heating wire according to the present invention transmits a resistance change signal corresponding to a temperature rise to a control device to supply power to both ends of the electrical conductor wire 3. It is characterized in that the temperature can be controlled by controlling.

In addition, the above-mentioned thermoplastic resin is a resin which melts and flows when heat is applied, has plasticity, and when it cools, solidifies and is molded, so that such heating, melting, cooling, and solidification processes can be repeated. For example, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), methacryl (PMMA), polystyrene (PS), polyvinylidene chloride (PVDC), ABS resin, polyamide, polycarbonate, Polyacetal, PBT, MPPO, PET and the like are preferred.

That is, when the RTD heating element is overheated, the inner conductor line and the outer conductor line are short-circuited by the melting point of the thermoplastic resin, and the short-circuit prevention device is configured to cut off the power supply by transmitting the short-circuit signal to the control device.

Therefore, the RTD heating network according to the present invention is characterized by having a temperature control function for controlling the temperature by sensing the temperature and a temperature fuse function for shutting off the power by melting the thermoplastic resin when overheated.

The resistance thermometer heating network according to the present invention can supply a heating element that provides a uniform temperature distribution of the surface heating by the distribution effect of the load current in an electrical parallel structure of the load.

That is, a large difference between the series and parallel, which are the load structures of the electric heating element, depends on the load length between the electrode terminals, and as the load length becomes longer, the voltage distribution becomes uneven. Since the series structure has a long load length and current flows only on one line, heat collection may be caused by hot spots due to external stress.

Therefore, a uniform temperature distribution can be realized by voltage distribution with a short load length as well as a load current distribution effect by the parallel structure.

≪ Example 1 >

(1) 2.0 g of 3- (dimethylstearylammonio) propanesulfonate (amphoteric surfactant), 5 ml of glycerol (hydration stabilizer) and 495 ml of deionized water were mixed and an aqueous solution of the surfactant (pH 6.5) was prepared.

(2) 500 ml of the aqueous solution of the surfactant obtained in the above (1) and 25 g of carbon nanotubes (multi-walled carbon nanotubes manufactured by Hanwha Nanotech, CM-95) were stirred with a ball mill.

(3) 500 ml of an aqueous solution of the surfactant prepared in the same manner as in (1) was added to the carbon nanotube-containing liquid substance in which (2) was produced, and a polyester-based binder (EW-210 manufactured by BASE KOREA) was added as a solid component. 50g was added in conversion and the dispersion was prepared by the bead mill.

(4) Impregnating the dispersion liquid of (3) on the polyester fiber (150 fineness of denier) which is a base fiber, and drying it at 150 degreeC for 5 minutes, and manufacturing the fiber coated with a carbon nanotube.

(5) The electrical resistance of the coated fiber of (4) is repeated several times to match 2500 to 3000 ohms per centimeter.

(6) Covering in a spiral shape on the polyester fiber (fineness 5000 denier) which is the center yarn with the fiber of said (5) (about 1.5 mm-2 mm pitch).

(7) Through the weft supply apparatus according to the present invention, the weft yarn is a covering yarn prepared in the above (6), and the warp yarn is woven into two strands of polyester 500 denier (fineness), and the warp seals of both sides Alternately arranged 10 strands of 0.32mm diameter copper wire, weaving width 30cm, weaving density 3 spaces per inch.

(8) Covering the woven fabric in (7) with silicone rubber (the thickness of the coating layer is about 0.5 mm).

The power consumption of the carbon nanotube heating element manufactured by the process (1) to (8) was about 70 Watts per meter (rated voltage 220V). It rises to 45 ℃ when 220V power is applied (ambient temperature 20 ℃)

Figure 4 shows the result of measuring the surface temperature of the RTD heating network according to the first embodiment with a thermal imaging camera, as shown in the deviation of up to 2.5 degrees with respect to the surface as shown in the entire even surface temperature Confirmed.

Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims Various modifications may be made to the invention. Therefore, changes in the future embodiments of the present invention will not depart from the technology of the present invention.

1: warp
2: weft
3: electrical conductor wire
20: thermal heating wire
21: center thread
22: inner conductor wire
23: thermoplastic resin
24: outer conductor wire

Claims (3)

In the resistance temperature heating network, the warp yarns are opened in the upper and lower groups by the opening motion of the weaving yarn heald, the inside of the opened warp is enclosed by the weft motion, and the weft of the body enclosed in the opening is placed in front of the woven fabric. Weaving is produced by successive repetition of body needle movement to complete the organization of warp and weft yarns to form a fabric, and the weft yarn is a continuous thermal arrangement consisting of concentric circles of inner conductor line, thermoplastic resin and outer conductor line sequentially on the center thread. The heating wire is a wire resistance wire, characterized in that the warp of several strands are arranged on both sides of the fabric with electrical conductor wire, and coated with an electrically insulating material on the fabric. In the resistance temperature heating network, a large number of warp yarns are knitted by stitching, which is the main movement of knitting, the rising and falling movement of knitting needles, and the opening and closing movement of knitting needles. A weft yarn is inserted into the knit fabric, the weft yarn is a single continuous line, and the weft yarn is a continuous thermal wire heating line consisting of concentric circles of inner conductor line, thermoplastic resin and outer conductor line sequentially on the center yarn. And an electrical conductor wire is inserted and knitted in both warp directions on both sides of the knitted fabric, and is coated with an electrically insulating material on the knitted fabric. The RTD network according to claim 1 or 2, wherein the inner conductor wire is any one of platinum, copper, and nickel.

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