KR20140021470A - Electrically conductive silicone rubber heater and the manufacturing method of the same - Google Patents

Abstract

The present invention relates to a conductive silicone rubber heating element and a method for manufacturing the same and more specifically, a method for manufacturing a conductive silicone rubber heating element, the method comprising the steps of: in a fabric-type heating element formed by weaving warp threads and weft threads, manufacturing a conductive silicone rubber heating element forming a fabric form by using one of the threads as a general fiber yarn, and the other one as an extruded conductive yarn manufactured by coating a core yarn with conductive silicone rubber by extrusion; manufacturing conductive silicone rubber composition by dispersing conductive carbon in silicon rubber; manufacturing an extruded conductive yarn by coating the core yarn with the silicone rubber composition by extrusion molding; manufacturing fabric using the extruded conductive yarn, wherein the extruded conductive yarn is arranged in one direction, and the general fiber yarn is arranged in the other direction. According to the present invention, the extruded conductive yarn can be manufactured by an extrusion molding method to improve the interfacial adhesion between a silicone rubber conductive layer, and supporter fiber or a metal terminal, thereby improving the durability of a connecting portion regardless of a repeated thermal and physical stress.

Description

Electrically conductive silicone rubber heater and the manufacturing method of the same

The present invention relates to a conductive silicone rubber heating element and a method for manufacturing the same, and more particularly, in a textile heating element formed by weaving a blade and a line, any one of the above line is a general fiber yarn, the other of the above line is a conductive silicone A conductive silicone rubber heating element that forms a woven fabric using an extruded conductive yarn prepared by extrusion coating rubber to a screen, and conductive carbon is dispersed in silicone rubber to prepare a conductive silicone rubber composition, and the silicone rubber composition is screened by extrusion molding (core to produce an extruding conductive conductive yarn by covering the yarn, and to form the extruded conductive yarn in the form of a fabric, but to form the extrusion conductive yarn in only one direction, and the other direction is made of a common fiber yarn to form a conductive silicone rubber heating element It relates to a manufacturing method.

The heating elements have been evolved in various forms, ranging from the classical concept metal heating elements applied to electric stoves and hot air blowers to low temperature type heating elements manufactured using heat resistant polymers.

In particular, the combined form of the polymer and the heating element may be a good example of overcoming the bias of using the polymer when manufacturing the heating element. Among these cases, a method of manufacturing a heating element using conductive liquid silicone rubber has been developed.

The conductive liquid silicone rubber is excellent in low temperature properties and heat resistance, it can be a desirable target material for the production of low-temperature heating element, by using the liquid silicone rubber as a conductive binder, coated on a support such as a mesh form conductive coating film To form a heating element.

That is, the heating element is a structure in which the conductive passage is formed by coating the liquid silicone rubber on the support to form a conductive film, so that the conductive passage flows in a mesh direction as a grid.

At this time, the coating method usually uses an impregnation coating method of coating by impregnating the support in liquid silicone rubber.

However, when the impregnation coating method is used as described above, a separate pressurization method is not applied during coating, and thus the silicone rubber-based conductive layer formed of liquid silicone rubber has a low interfacial adhesion force between the support fiber and the metal terminal, thereby causing repeated thermal and physical stresses. Due to this, the conductive coating film of the connection portion is easily peeled off or broken and electrically disconnected. Therefore, a bypass current is concentrated around the disconnected periphery, thereby overheating.

In addition, since conductive carbon is dispersed on the liquid silicone rubber, precipitation problems occur during the coating process, thereby causing a local difference in thickness and electrical conductivity of the coating film formed on the support such as a mesh form.

In addition, an organic solvent volatilizes and fine pores are formed in the conductive coating during the process of drying the conductive coating on the support. Therefore, the durability and corrosion resistance of the coating are weakened, and foreign matter penetrates into the formed pores to swell the coating. .

In addition, a large number of microfiber yarns are formed around the support fibers, and when conductive coating is applied to the support fibers and then coated for insulation treatment, the coating of the insulating material is not completely performed. There was also a problem of leakage by the fine fiber yarn made conductive coating during application.

In addition, the conventional fabric-type heating element or lattice-type heating element is configured to have a four-way conductive path because the conductive wire is given to both the blade and the seed line, and the conductive path coated on the mesh-like support generates defects even when a defect such as breakage occurs. Conduction is maintained in the parts other than the damaged part, but a bypass current flows around the defective part and the current is concentrated around it, causing a risk of local overheating and fire of the heating element. .

The present invention has been made to solve the above-described problems, the present invention is to produce an extrusion conductive yarn by using an extrusion molding method, to improve the interfacial adhesion of the silicone rubber-based conductive layer, the support fiber or the metal terminal to repeat thermal, The object of the present invention is to improve durability of the heating element by preventing deformation or breakage of the connection part despite physical stress.

In addition, the present invention is to disperse the conductive carbon in the silicone rubber of the non-liquid fluid by stirring, and once dispersed, the carbon is less precipitated than the liquid silicone so that the conductive silicone rubber has a homogeneous electrical properties as a whole. For other purposes.

In addition, since the present invention does not use an organic solvent, it is environmentally friendly, and since there are no pores remaining in and on the surface due to volatilization of the organic solvent, it is possible to secure durability and uniformity of conductive silicone rubber. For another purpose.

In addition, the present invention is a method of extrusion coating the conductive silicon on the outside of the screening, unlike the impregnation coating method is another object to make the heating element safe to use because the problem of leakage caused by the fine fiber yarn does not occur.

In addition, when the carbon fiber piece of the conductive carbon is used, the carbon fiber piece may be generally arranged in one direction during the extrusion process, and thus another object is to manufacture a conductive silicon heating element having improved conductivity.

In addition, the present invention can thicken the conductive silicone rubber coating layer as compared to the conventional impregnating coating method, it is another object to manufacture a conductive silicon heating element with improved conductivity.

In addition, the present invention is a one-way conductive path structure, so that even if one of the passages are disconnected, since there is no bypass current to the peripheral passages, another object of the present invention is to eliminate the risk of overheating of the heating element or the resulting fire.

The present invention to achieve the above object, a mixing step of preparing a conductive silicone rubber composition by dispersing the conductive carbon in the silicone rubber; An extrusion step of manufacturing an extrusion conductive conductive yarn by coating the conductive silicone rubber composition on a core yarn by extrusion molding; And weaving the extruded conductive yarn and the normal fiber yarn to manufacture a fabric, wherein the extruded conductive yarn comprises a weaving step of being configured in only one direction of the fabric. The method for manufacturing a conductive silicone rubber heating element is characterized in that it comprises a. .

The conductive carbon is preferably mixed in the range of 4 parts by weight to 100 parts by weight based on the weight of silicone rubber.

The screening is at least one selected from polymer fibers or glass fibers, and the fineness of the screening is preferably 500 denier to 10,000 denier.

The polymer fibers are preferably polyester fibers, aramid fibers or high strength PVA fibers.

The conductive layer thickness of the extruded conductive yarn is preferably 0.2 mm to 2 mm.

At least both ends of the woven portion of the fabric woven by ordinary fiber yarns are preferably replaced by conductive lines.

The conductive carbon is preferably at least one selected from carbon black, graphite powder, carbon nanotube, and carbon fiber.

The length of the carbon fiber piece is preferably 50 to 10 mm.

The conductive silicone rubber heating element is preferably applied to the runway, road, heating, cold protection, thermal insulation, soil for cultivating hair growth, pipeline.

In addition, the present invention in the fabric-type heating element formed by weaving the blade and seed line, any one of the above line is a general fiber yarn, the other of the above line is made of an extruded conductive yarn prepared by extrusion coating the conductive silicone rubber to the screening A conductive silicone rubber heating element is provided.

At least both ends of the general fiber yarn forming portion is preferably replaced by a conductive wire.

According to the present invention as described above, by producing an extrusion conductive yarn by using an extrusion molding method, the interfacial adhesion between the silicone rubber-based conductive layer and the support fiber or metal terminal is improved, so that the durability of the connection part is increased despite the repeated thermal and physical stresses. An effect is expected to improve.

In addition, the present invention is to disperse the conductive carbon in the silicone rubber of the non-liquid fluid by stirring, and once dispersed, less precipitation than the liquid silicone, so that the heating element manufactured using the same has a homogeneous electrical property It is expected to have an effect.

Further, since the present invention does not use an organic solvent, it is eco-friendly, and therefore, an action effect with a relatively low pollution-causing factor is expected.

In addition, since the present invention has no pores remaining in and on the surface of the organic solvent due to volatilization of the organic solvent, it is expected to have an effect of ensuring durability and conductive uniformity of the conductive silicone rubber.

In addition, the present invention is a method of extrusion coating the conductive silicon on the outside of the screening, unlike the impregnating coating method is expected to have an effect that the electrical leakage caused by the microfiber yarn does not occur, so that it can be used safely.

In addition, when the carbon fiber piece of the conductive carbon is used, the carbon fiber piece may be generally arranged in one direction during the extrusion process, and therefore, an effect of improving the conductivity is expected.

In addition, the present invention enables the formation of a thicker conductive silicone rubber coating layer compared to the conventional impregnating coating method, and therefore, as the conductive layer is thicker, a more excellent effect is expected.

In addition, the present invention by using the extrusion method, it is possible to ensure the uniformity of the coating of the silicone rubber, and the effect is expected to maintain the overall temperature distribution of the heating element uniformly.

1 is a manufacturing process chart of the conductive silicone rubber heating element according to an embodiment of the present invention.
2 is a cross-sectional view of a screening die from which an extruded conductive yarn is manufactured according to an embodiment of the present invention.
3 is a state diagram of the conductive silicone rubber heating element according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings and preferred embodiments.

The present invention is a one-way conductive structure of the fabric-type heating element, the comparative example is a lattice-shaped conductive structure, the present invention is the conductivity is given only to one line in the fabric-like heating element forming a string and a line, the comparative example Conductivity is imparted to both and the strings.

1 is a manufacturing process diagram of a conductive silicone rubber heating element according to the present invention, the mixing step of preparing a conductive silicone rubber composition by dispersing the conductive carbon in the silicone rubber (S11), the conductive silicone rubber composition is screened by extrusion molding (core yarn Extruded step (S12) is coated with a) to produce an extruding electrically conductive yarn (S12) and the weaving step (S13) is applied to only one of the blade and the seed line of the fabric is made in the form of a fabric.

Here, as the conductive carbon, carbon black, graphite, carbon nanotube, and carbon fiber are preferable, and they can be applied individually or mixed. The carbon fiber pieces refer to chopped carbon fibers.

Particularly, when graphite powder, carbon nanotubes or carbon fiber pieces are mixed with carbon black, the number of contact points between the conductive carbon particles increases due to the difference in the size of the conductive carbon particles and the aspect ratio of the carbon fibers, As a result, it is possible to remarkably reduce the aggregation of carbon black with each other and reinforce the bonding force between the carbon fiber and the silicon rubber.

The characteristics of the carbon black are shown from the particle size, specific surface area, structure, surface properties, etc. In order to apply to the present invention, generally, the particles are small and porous, so that the surface area is wide, and the conductive passage structure between the particles is developed. It is better to contain less impurities, but there is no limitation on the production method.

It is preferable that the primary particle diameter of the carbon black which can be used for this invention is 30 nm-70 nm, and it is preferable that DBP (dibutyl phthalate) oil absorption amount is 120 mL / 100 g-500 mL / 100 g. If the particle diameter is less than 30 nm or the DBP oil absorption is less than 120ml / 100g, the desired electrical conductivity cannot be satisfied. On the other hand, when the particle diameter exceeds 70 nm, the number of conductive paths between particles decreases to form a random dispersed phase, and when the DBP oil absorption exceeds 500ml / 100g, the number of conductive paths between particles increases, so that the conductivity increases. Since the cohesive force is weak, the structure breaks due to the shear force at the time of mixing.

The amount of DBP oil absorption indicates the degree of the conductive channel structure complexed by chemical and physical bonds between the particles of carbon black, and refers to the volume (mL) of DBP contained per 100 g of carbon black.

In addition, the particle size of the graphite powder is 0.5㎛ to 10㎛, the electrical resistivity is preferably 0.005Ω · cm to 0.08Ω · cm. It is inappropriate to maintain electrical stability if it is out of the above range.

In addition, the carbon nanotubes that may be used in the present invention preferably have a particle diameter of 5 nm to 90 nm. If it is out of the above range because the dispersion stability is significantly reduced.

In addition, the length of the carbon fiber piece is preferably 50㎛ to 10mm. When the length is less than 50 μm, the mechanical properties of the silicone rubber by the carbon fiber piece do not appear, and if it exceeds 10 mm, the orientation of the extruded conductive yarn is difficult. Therefore, the length of the carbon fiber piece has a critical significance in the above range.

In addition, the addition amount of the carbon fiber piece is preferably 1 part by weight to 10 parts by weight with respect to 100 parts by weight of silicone rubber. If it is less than 1 part by weight, the mechanical strength reinforcement effect of the silicone rubber exerted from the carbon fiber piece does not appear, and if it exceeds 10 parts by weight, the silicone rubber cannot act as a mattress due to the excessive amount of conductive carbon fiber pieces compared to the silicone rubber. Since the physical properties are lowered, the content of the carbon fiber piece has a critical significance in the above range.

The amount of carbon black added is preferably 4 to 100 parts by weight based on 100 parts by weight of the silicone rubber, but is preferably 7 to 60 parts by weight. If the added amount is less than 4 parts by weight, the conductivity is low, and if it exceeds 100 parts by weight, the mechanical strength of the cured product may deteriorate.

The blending amount of the carbon black is reduced by the amount of the graphite powder, carbon nanotubes, and carbon fiber pieces added.

Next, the mixture prepared as described above is uniformly mixed using a rubber kneader such as a two-stage roll mill, a banbury mixer, a dough mixer and the like.

The roll spacing of the two-stage roll mill is preferably 2.5 mm to 20 mm. If less than 2.5mm, the shear force is high, the structure of the carbon black is broken, rather the conductivity is reduced, the shear force is too weak when exceeding 20mm is difficult to disperse.

In the conductive silicone rubber of the present invention, the conductive carbon, a processing aid, and the like are blended with a silicone rubber containing an organopolysiloxane base polymer which becomes a rubber elastic body by curing by heating or the like and a curing agent.

Fig. 2 is a cross-sectional view of a screening die coating die 21 in which an extruded conductive yarn according to the present invention is manufactured, and the rubber for coating the screening 21 in the screening 21 coating process using the conductive silicone rubber as the coating material. The extrusion process is largely divided into two stages, which are divided into a molding process formed by an initial extrusion and a curing process which is then hardened to a high temperature.

In the curing step for determining the physical properties of the silicone rubber, the molding conditions are not particularly limited, but a range of 5 seconds to 1 hour is preferable at 100 ° C to 400 ° C. In the case of secondary heat treatment after molding, it is preferable to heat at 150 ° C to 200 ° C in the range of 1 hour to 30 hours. Heating is intended to volatilize the residue of the curing agent or to improve the physical properties of the conductive silicone rubber.

The screen 21 is a fiber located at the center of the extruded conductive yarn 23, and the screen 21 is screened together with drawing out to the center of the die 22 through a tapered guider of the crosshead. ) Is coated with conductive silicone rubber to produce an extruded conductive yarn 23.

Although the material of the said examination is not specifically limited, Polyester yarn, glass fiber, aramid fiber, high strength PVA fiber, etc. which do not have an electrical conductivity are preferable.

The fineness of the screening is preferably 500 denier to 10,000 denier. If less than 500 denier, the mechanical strength of the heating element is weak, and when the excess of 10,000 denier mesh hole of the heating element is small, clogging phenomenon occurs during the insulation coating.

The conductive layer thickness of the extruded conductive yarn 23 is preferably 0.2 mm to 2 mm. If the conductive layer is thinner than 0.2mm, the mechanical strength is weak, and when the thickness exceeds 2mm, the mesh hole of the heating element is small, which causes clogging during the insulation coating.

In particular, unlike the impregnation coating method having a conductive layer thickness of less than 0.2 mm, according to the present invention, since the conductive layer is thick, the conductivity can be further improved, which is an advantage of the extrusion method and characterizes the present invention.

Figure 3 is a state diagram of the conductive silicone rubber heating element according to the present invention, the fabric form is a general warp yarn 31 of the warp by the opening movement of the weaving heald, opening the upper and lower groups, the inside of the warp in the north By weaving the weft, the body is woven in a continuous repetition of the body needle movement to push the weft in the opening to the woven fabric to complete the organization of the warp and weft, the fabric is formed, the warp of the fabric It is formed as, the warp yarns of several strands are arranged in both ends of the fabric replaced by a conductive wire 33, the weft is characterized in that the composed of an extruded conductive yarn (23).

Here, the warp yarn is composed of a general fiber yarn 31, the weft yarn is composed of an extrusion conductive yarn 23, it is also possible that the warp yarn is composed of an extrusion conductive yarn 23, the weft yarn is a general fiber yarn 31.

In addition, the conductive lines 33 may be formed at at least both ends of the warp yarn, and when formed at both ends, a plurality of conductive lines 33 may be formed at the end regions of both ends. Referring to FIG. 4, it can be seen that six conductive lines 33 are formed in the end regions of both ends.

Textile fabrics are formed by supporting the threads with each other by weaving or knitting. That is, the fabric is formed in a weaving and knitting manner in which the thread is guided up and down the adjacent yarns.

In one embodiment of the fabric, the weaving is a fabric having a warp and weft cross-over and 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 to form a tunnel called shed, and passing the weft through the warp according to the width of the fabric. It consists of a picking motion, and a beating motion that pushes the weft through the opening to the front of the woven fabric as a body to complete the warp and weft tissue. Also, in order to continue weaving, the warp is released from the warp beam and a certain amount of fabric is removed from the weaving area by the required turn-off and the required weft spacing to supply the weaving part with the required speed and proper and constant tension. A take-up is needed.

The warp yarns of several strands on both sides of the fabric is characterized in that the replacement arrangement.

The conductive wire 33 serves as an electrode wire for applying power in the weft yarn, which is an extruded conductive yarn 23.

The material of the conductive wire 33 is not particularly limited, but copper wire, aluminum wire, stainless steel wire, or the like is preferable.

The conductive wire is preferably formed of the blade structure of the fabric.

The fabric tissue of the present invention is preferably a ripening tissue (leno tissue). The wing tissues are not parallel to each other, and the two warp yarns are twisted together to form an eight-shaped weft. Thus, a wicker-like woven fabric is formed.

In particular, the extruded conductive yarns are in contact in the openings in which the conductive wires are twisted with each other, thereby improving contact between the conductive wires and the extruded conductive yarns.

The warp yarn is a general fiber, but the material is not limited, and particularly, aramid fiber, fluorine fiber, flon fiber, superfiber such as ultra high tensile PVA or glass fiber, nylon, polyester fiber and the like are preferable. In particular, the glass fiber is preferably manufactured by plying the twisted yarn into several strands. This is because the twist resistance is good when the thread is twisted.

Next, the fabric is insulated coated with resin.

The resin type is preferably epoxy, polyurethane, silicone, fluorine, EPDM, polyester, bituminous, oleoresin, phenol, alkyd, PVC resin and the like. In particular, silicone rubber, EPDM rubber or fluorine rubber is preferable.

<Examples>

(1) Preparation of conductive silicone rubber composition

Based on 100 parts by weight of silicone rubber and 20 parts by weight of the silicone rubber, a mixture of 20 parts by weight of carbon black (denka black merchandise) and 4 parts by weight of a curing agent was introduced into a rubber kneader, followed by kneading. The roll space | interval of a roll mill was adjusted in 3 mm intervals, and the electrically conductive silicone rubber composition was mixed and manufactured by kneading time about 5 minutes.

(2) Preparation of Extruded Conductive Yarn

The screening was set to 1000 denier of polyester yarn, and the extruded conductive yarn was manufactured by extruding the composition prepared in the above (1) using a die hole of an extruder with a diameter of 1 mm. Curing conditions were 60 second at 200 degreeC.

(3) Preparation of conductive silicone rubber heating element

Weft yarn is used as the extruded conductive yarn prepared in the process (2), and the warp yarn is woven into two strands of polyester 500 denier (fineness), and the warp yarns on both sides are alternately arranged by 10 strands of copper wire having a diameter of 0.32 mm, The fabric was woven at 30 centimeters wide and the fabric density was woven at 3 squares per inch. Thereafter, the fabric was coated with 0.5 mm thick liquid silicone rubber for electrical insulation. Since the extruded conductive yarn and the liquid silicone are the same material, the coating performance of the extruded conductive yarn of the liquid silicon was very excellent.

(4) The thickness of the conductive layer of the extruded conductive yarn woven in the step (3) was about 0.5 mm.

The power consumption of the conductive silicone rubber heating element manufactured by the process (1) to (4) was about 70 Watts per meter (rated voltage 220V). When the 220V power is applied at room temperature, the average rises to about 50.3 ° C.

(5) The temperature was measured by equally distributing the phase, middle, and bottom in the length of 1m of the heating element manufactured in (4). As a result, it was found to be 50.5 ℃ at the top, 50.9 ℃ at the middle, and 49.5 ℃ at the bottom. The deviation between the highest and the lowest was 1.4 ° C, indicating a deviation of 2.7%.

On the other hand, in the case of the lattice-shaped heating element presented as a comparative example, the temperature was measured in the same manner as in the embodiment of the present invention by equally distributing to the upper, middle, and lower side based on the length of 1m of the heating element, 55.4 ℃ at the upper end, in the middle The temperature of 58.1 ° C and lower part of 53.8 ° C were shown, respectively, and the deviation between the highest value and the lowest value was 4.3 ° C, which was 7.4%. As a result, it was found that the variation ratio of the temperature was significantly smaller than that of the conventional lattice heating element.

In the case of the heating element of the lattice structure, the coating material is agglomerated at the lattice point of the conductive passage during the impregnation coating, and the hot spot is generated by this agglomeration, and thus the temperature deviation of each section may be large according to the hot spot generation. have. On the other hand, in the heating element according to the present invention, there is no room for the coating material to agglomerate at such lattice points, the thickness of the coating layer due to the silicone rubber is constant, and the occurrence frequency of heat deviation is significantly small because of the concern of local hot spot generation and arc generation. It must be very low.

When comparing the heating element of the lattice structure and the heating element of the one-way structure according to the present invention are shown in Table 1.

Compare One-way structure Grid structure Coating method Extrusion method Impregnation method Coating layer thickness 0.2mm to 2mm 10 μm to 50 μm Coating Structure High density structure by compressive force Low density structure with pores due to solvent volatilization Temperature range The temperature difference between the highest and lowest point is 1.4 ℃ and the deviation rate is 2.7%. The temperature difference between the highest point and the lowest point is 4.3 ℃ and the deviation rate is 7.4%. safety One-way linear structure cuts off in case of fault The conduction path has a four-way structure, so in case of a defect, a bypass current is added to the disconnected area, causing overheating near the disconnection. Electrical insulation
Performance Electrical insulation is coated on the substrate with a uniform conductive coating
Excellent insulation performance Poor insulation performance due to difficulty in covering electrical insulation due to cohesive protrusion of four grid points

The conductive silicone rubber heating element manufactured as described above may be widely used as long as it requires heating. Specifically, the conductive silicone rubber heating element may be buried beneath the surface of the road, runway, and the like to prevent drying and freezing of the road, runway, and the like. It may be used for crop cultivation, seedling, and may be buried beneath the surface of cropland or cropland for crop cultivation, or be buried beneath the soil of a plant factory or home crop cultivation system. Since the electrical control for this is a conventional configuration, a detailed description thereof will be omitted.

On the other hand, the built-in clothing used in rescue, rescue, leisure, emergency medical, such as wet suits, life jackets, ski suits ensures body warmth and excellent safety. At this time, the battery is embedded in the garment, and the positive and negative poles of the conductive wire are connected to the battery, and a control unit is provided to control the on / off of the battery, thereby providing the garment with a heating function. The garment may also include gloves, shoes, socks, etc., and should be recognized as a broad concept.

In addition, it can be applied to rescue and recycling special equipment such as wheelchairs, and can be used to insulate the distress or the patient. In this case, as described above, the battery may be built in to drive the heating element, and may be driven by connecting the power cord to the power supply unit. Since the specific configuration is a conventional configuration, a description thereof will be omitted.

In addition, it can be applied to pipelines installed in facilities that are repeatedly heated and cooled, such as factories, or facilities affected by climate change, such as urban centers and buildings. It can be used for the purpose of preventing the back. As described above, since the electrical control for this is a conventional configuration, a detailed description thereof will be omitted.

In short, the heating element of the present invention can be applied to a wide range of areas such as runway, road, rescue rescue, leisure, heating, cold protection, thermal insulation, hair growth for soil, pipeline.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the present invention. The invention may be embodied in many other forms. Accordingly, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

21: core yarn
22: die
23: Extrusion Challenger
31: general fiber yarn
33: challenge line

Claims (11)

Mixing the conductive carbon into silicone rubber to prepare a conductive silicone rubber composition;
An extrusion step of manufacturing an extrusion conductive conductive yarn by coating the conductive silicone rubber composition on a core yarn by extrusion molding; And
Weaving the extruded conductive yarns and the normal fiber yarns to produce a fabric, the weaving step so that the extrusion conductive yarns are configured in only one direction of the fabric;
Method for producing a conductive silicone rubber heating element, characterized in that it comprises a. The method of claim 1,
The conductive carbon is a method for producing a conductive silicone rubber heating element, characterized in that mixed in the range of 4 parts by weight to 100 parts by weight based on 100 parts by weight of silicone rubber. The method of claim 1,
The screening is at least one selected from polymer fibers or glass fibers, and the fineness of the screening is 500 denier to 10,000 denier. The method of claim 1,
The polymer fiber is a method for producing a conductive silicone rubber heating element, characterized in that the polyester fiber, aramid fiber or high-strength PVA fiber. The method of claim 1,
The conductive layer thickness of the extruded conductive yarn is 0.2mm to 2mm method for producing a conductive silicone rubber heating element, characterized in that. The method of claim 1,
The method of manufacturing a conductive silicone rubber heating element, characterized in that at least both ends of the woven fabric in the fabric is replaced by a conductive wire. The method of claim 1,
The conductive carbon is a method of producing a conductive silicone rubber heating element, characterized in that at least one selected from carbon black, graphite powder, carbon nanotubes, carbon fiber pieces. 8. The method of claim 7,
The length of the carbon fiber piece is 50㎛ to 10mm manufacturing method of the conductive silicone rubber heating element, characterized in that. The method of claim 1,
The conductive silicone rubber heating element is a method for producing a conductive silicone rubber heating element, characterized in that it is applied to runway, road, heating, cold protection, thermal insulation, hair growth for soil, pipe, structural rescue. In the fabric-type heating element formed by weaving the blade and the seed line, any one of the above line is a common fiber yarn, the other of the above line is a conductive silicone, characterized in that the extrusion conductive yarn prepared by extrusion coating the conductive silicone rubber to the screening Rubber heating element. 11. The method of claim 10,
Conductive silicone rubber heating element, characterized in that at least both ends of the general fiber yarn forming portion is replaced by a conductive wire.

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