KR100440614B1 - Heat wire coating silicon rubber for radiating infrared ray - Google Patents

Abstract

Silicone rubber-coated heating wire for emitting far-infrared radiation according to the present invention is a curing agent for curing silicone rubber and far-infrared radiating material and heat-transfer material for facilitating heat transfer and silicone rubber composition for far-infrared radiation on heating wire, and silicone rubber composition In the silicone rubber coated heating wire that emits far infrared rays coated with a silicone rubber composition mixed with a coloring agent for expressing the color of the light, the far infrared rays are emitted to the ferrite powder, which is a powder that improves the thermal conductivity of the silicone rubber on the heating wire and emits far infrared rays. It is coated with a composition to which at least one or more powders of jade powder, SiO ₂ powder and elvan stone powder are added.

Description

Silicone rubber coated heating wire emitting far-infrared rays {HEAT WIRE COATING SILICON RUBBER FOR RADIATING INFRARED RAY}

The present invention relates to a silicone rubber-covered heating wire that emits far-infrared rays, and after crushing and powdering minerals such as ceramics, jade, germanium, ferrite, etc., in which a large amount of far-infrared rays are formed into a raw material or more, a synthetic resin or silicone The silicone rubber coating heating wire which radiates far-infrared rays which made the composition obtained based on rubber | gum etc. as a coating material (or also called an insulator) of a heating wire.

Conventionally, a composition of pulverizing jade, elvan, germanium, which emits far-infrared rays and mixing them with a synthetic resin or a silicone rubber substrate is shown in many publications, such as Korean Patent Application Publication No. 1998-0009176 (April 30, 1998), but these compositions are synthetic resins. When the composition of 50 and 50 is used to coat or add the above composition to the surface of heating element, far infrared rays are emitted, but heat is generated from heating wire when used as heating wire coating material for heating heater, especially electric mat. Since heat is transmitted through the coating material, the non-metallic materials of the silicon substrate, far-infrared ray-generating materials such as jade and elvan are used to reduce the insulation performance and the heat transfer efficiency due to the pinhole.

An object of the present invention is to devise to solve the problems described above, and powdered by grinding minerals such as silicon oxide (SiO ₂ ), jade, germanium, elvan, etc., in which a large amount of far infrared rays are released, into a raw material or more In addition to the generation of far-infrared rays, the heat-transfer characteristics of Ni-Zn-based soft magnetic ferrites, Mn-Mg-based soft magnetic ferrites, Cu-Zn-based soft magnetic ferrites, Ba-ferrite, etc. are superior to those of the minerals mentioned above. In order to provide a silicone rubber-coated heating wire which mixes the powders and mixes with silicone rubber to produce far-infrared rays with excellent far-infrared rays, good thermal conductivity and excellent insulation performance.

1 is a cross-sectional view of an electric wire coated with a heating wire with a silicone rubber composition for far-infrared radiation according to a first embodiment of the present invention.

2 is a cross-sectional view of a wire coated with a silicone rubber composition for far-infrared radiation after coating the silicone rubber on the heating wire according to the second embodiment of the present invention.

3 is a cross-sectional view of an electric wire coated with a silicone rubber on a heating wire and then laminated with a braided wire made of tin plated wire and coated with a far-infrared radiation silicone rubber composition on the braided wire layer according to the third embodiment of the present invention. .

<Description of the symbols for the main parts of the drawings>

10: heating wire 20: silicone rubber composition

30: silicone rubber 40: braided wire layer

In order to achieve the above object, the silicone rubber coated heating wire radiating far-infrared ray according to the present invention is a silicone rubber and powder of silicone rubber and far-infrared radiating material and heat transfer material for facilitating heat transfer for far-infrared radiation on heating line. In a silicone rubber coated heating wire that emits far infrared rays coated with a silicone rubber composition mixed with a curing agent for curing a silicone rubber composition and a coloring agent for expressing the color of the silicone rubber composition, the thermal conductivity of the silicone rubber is improved on the heating wire and the far infrared ray is emitted. It is coated with a composition in which at least one powder of jade powder, SiO ₂ powder and ganban stone powder which emits far infrared rays is added to the ferrite powder.

In the silicone rubber composition for emitting the far infrared rays, the mixing ratio of the silicone rubber, the powder, the curing agent, and the coloring agent is mixed in a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4, and the powder is mixed with ferrite powder SiO ₂ powder is characterized in that it is mixed in a weight ratio of 60 to 80:20 to 40.

In addition, the silicone rubber composition that emits far-infrared rays, the mixing ratio of the silicone rubber, powder, curing agent and coloring agent is mixed in a weight ratio of 60 to 90: 5 to 35: 1-2 to 3 to 4, the powder is ferrite It is characterized in that the powder, SiO ₂ powder and jade powder are mixed in a weight ratio of 60 to 80: 10 to 20: 10 to 20.

In addition, the silicone rubber composition that emits the far infrared rays, the mixing ratio of the silicone rubber, powder, curing agent and coloring agent is mixed in a weight ratio of 60 to 90: 5 to 35: 1-2 to 3 to 4, the powder is ferrite It is characterized in that the powder, SiO ₂ powder, jade powder and elvan powder are mixed in a weight ratio of 60 to 80: 7 to 15: 7 to 15: 6 to 10.

At this time, the ferrite powder is Ni-Zn soft magnetic ferrite, Mn-Mg soft magnetic ferrite, Cu-Zn soft magnetic ferrite. It is characterized in that any one of Ba ferrite.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the silicone rubber-covered heating wire according to an embodiment of the present invention.

The method for preparing a composition that emits far infrared rays of the present invention comprises the following process steps.

Far-infrared emitting minerals such as silicon oxide, jade, and germanium, in which a large amount of far-infrared rays are emitted, and ferrites superior in passion as compared to the above-mentioned minerals are pulverized and pulverized, respectively, to a predetermined mesh or more, that is, 5 to 20 µm. The ferrite powder used in this step is Ni-Zn-based soft magnetic ferrite, Mn-Mg-based soft magnetic ferrite, Cu-Zn-based soft magnetic ferrite, Ba having a thermal conductivity of about 0.52 to 0.62 (W / km). Ferrite is used, but one of ordinary skill in the art can select the most suitable type of ferrite as needed.

According to the use of the powder obtained in the first step, that is, in consideration of far-infrared generation and thermal conductivity, the second step, which is a step of mixing jade powder, SiO ₂ powder, ganban stone powder selectively into the mixing type as shown in Table 1 The mixing of the powders described above is carried out using a kneader commonly used in the art.

[Table 1] Weight ratio of powder

Powder Mixing Ratio Type ferrite SiO ₂ jade Elvan One 60 to 80 20-40 2 60 to 80 10 to 20 10 to 20 3 60 to 80 7-15 7-15 6-10

TABLE 2 Total weight ratio of composition

Type of composition Silicone rubber powder Hardener Pigment (Coloring Agent) One 60 to 90 5 to 35 1 to 2 3 to 4

The kneaded powder is mixed with silicone rubber to perform a third step of mixing the powder to be uniformly dispersed using a roller mixer commonly used in the art. At this time, the temperature of the roller at the time of the roller operation is 50 ℃ or less, suitably maintains 48 to 50 ℃ and working time is appropriate for 4 minutes to 5 minutes, which can be changed according to the working conditions.

The mixing ratio of the powder and silicone rubber kneaded in the third step is a powder mixed with silicone rubber, and a pigment included to determine the color of the siligo rubber (In the present invention, Fe ₂ O ₃ is used but is used as a synthetic resin coloring agent. The pigments in the field can be selected according to the needs of those skilled in the art) and the curing agents commonly used in silicone rubber formulations (in the present invention, commercialized peroxide-based curing agents are used. Ratio of 70: 25: 3: 2 is appropriate.

However, as a result of the present inventor's examination through a number of tests and analyses, in the field of using silicon-coated heating wire, the ratio of the powder, pigment, and curing agent kneaded with silicone rubber as the range satisfying far-infrared emissivity and thermal conductivity is silicone. It can be seen that the far-infrared powder in which the rubber is kneaded from 65 to 75 can be changed from about 20 to 30 and the curing agent and the pigment at about 5.

Table 3 is an example of the actual production of a silicone rubber compound that emits far-infrared rays, which is an example of the present invention, but the present invention is not limited thereto.

TABLE 3

division Addition amount (kg) Remarks Silicone rubber 71 Ba-ferrite powder 20 SiO ₂ powder 5 Fe ₂ O ₃ (coloring agent) 3 Hardener 1.2 Total amount 100.2

The far-infrared emissivity of the silicone rubber composite prepared as described above was measured by FT-IR spectrometer in comparison with the black body using the FT-IR Spectrometer. It can be seen that.

TABLE 4

Emissivity (5 ~ 20um) Radiation energy (w / ㎡) 0.893 6.10 × 100

For the measurement of thermal conductivity, a specimen prepared in the ratio as shown in Table 3 having a width of 10 cm, a length of 10 cm, and a thickness of 2 mm and a silicon rubber specimen without addition of ferrite or SiO ₂ were prepared, and the specimen was larger than the specimen having a surface temperature of 60 degrees. It was installed on the heat transfer plate 20 * 20 and compared the time of reaching up to 40 degrees using the thermoelectric thermometer on the surface of the specimen, that is, the surface in contact with the heat transfer plate. It was found that the test specimen reached by much faster.

TABLE 5

division Invention Psalm Comparison 1 time 15 seconds 30 19 sec 14 Episode 2 14s 65 19 sec 86 3rd time 16 sec 08 19 sec 44

Hereinafter, the heating wire structure of the present invention coated with the above-described composition will be described in detail with reference to the drawings.

1 is a cross-sectional view of the silicone rubber composition for far-infrared radiation coating on the heating wire in the first embodiment of the present invention, Figure 2 is a silicone rubber for far-infrared radiation after coating the silicone rubber on the heating wire in a second embodiment of the present invention 3 is a cross-sectional view of an electric wire coated with the composition, and FIG. 3 is a third embodiment of the present invention, in which a silicone rubber is coated on a heating wire, and a braided wire made of tin-plated wire is laminated, and the far-infrared radiation silicon is formed on the braided wire layer. It is sectional drawing of the electric wire which coat | covered the rubber composition.

Conventional methods for producing heating wires in the art using the compositions described above, ie, Published Patent Publication Nos. 1995-5500 (published on March 20, 1995), 2000-58641 (released on May 1, 2000) and wire manufacturers In the known method of the art, such as a method of manufacturing a synthetic resin insulated wire, a vinyl insulated wire commonly used in the wire, nichrome wire, carbon wire and other wires are combined or assembled to form a heating wire (10) to be mounted on the wire extruder The far-infrared ray generating silicone rubber composition 20 is put into this extruder, and it extrudes at the extrusion temperature of 200-250 degreeC, and manufactures a coating heating wire.

In the present invention, the above-described composition includes a ferrite powder that is conductive to improve far-infrared generation and thermal conductivity, and moreover, a mineral material such as jade powder may be included, which may cause a problem of insulation performance of the fume coating. After the primary coating with silicone rubber 30 on the coating, the insulation performance can be improved by coating the composition 20 which emits the above-mentioned far infrared rays on the primary coating, and furthermore, in order to block the electromagnetic waves generated from the heating wire. After forming the braided wire layer 40 such as tin-plated copper wire after the primary coating with silicon rubber on (10), the secondary coating may have a heating wire structure in which the composition 20 for emitting far infrared rays is coated.

The above embodiment merely illustrates a part of the heating wire coated with the silicone rubber composition for far-infrared radiation. In the heating wire of the structure in which the heating wire is coated or the element wire is associated or assembled, the heating wire has various structures according to the needs of those skilled in the art. It can be modified.

As described above, jade powder and SiO ₂ powder in which far infrared rays are emitted in a large amount (95% or more). Separate far-infrared rays from the heating device for the heating by using the composition obtained by mixing the elvan powder and ferrite powder having excellent thermal conductivity and emitting far-infrared ray with silicone rubber resin as a heating wire coating material for the heating heating device that needs far infrared rays. Not only does it generate heat and far infrared rays, but also improves the thermal conductivity of the silicone rubber coating without the need to install the emitting device, and it provides the effect of simplifying the structure of heating heaters for generating far infrared rays and increasing energy efficiency.

Claims (10)

On the heating line 10, a mixture of silicone rubber, far-infrared radiating material and heat-transfer material for facilitating heat transfer, a curing agent for curing the silicone rubber composition, and a coloring agent for expressing the color of the silicone rubber composition on the heating line 10 In the silicone rubber coated heating wire that emits far infrared rays coated with the silicone rubber composition, On the heating wire 10, the silicone rubber is coated with a composition in which at least one powder of jade powder, SiO ₂ powder, and lamellar powder, which emits far infrared rays, is added to the ferrite powder, which is a powder that improves thermal conductivity and emits far infrared rays. Silicone rubber sheathed heating wire that emits far infrared rays. The silicone rubber composition according to claim 1, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, The powder is a silicone rubber coated heating wire that emits far-infrared rays, characterized in that the ferrite powder and SiO ₂ powder is mixed in a weight ratio of 60 to 80:20 to 40. The silicone rubber composition according to claim 1, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, The powder is a silicone rubber coated heating wire that emits far-infrared rays, characterized in that the ferrite powder, SiO ₂ powder and jade powder are mixed in a weight ratio of 60 to 80:10 to 20:10 to 20. The silicone rubber composition according to claim 1, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, The powder is a silicone rubber coated heating wire that emits far-infrared rays, characterized in that the ferrite powder, SiO ₂ powder, jade powder and ganban stone powder is mixed in a weight ratio of 60 to 80: 7 to 15: 7 to 15: 6 to 10. The ferrite powder according to any one of claims 1 to 4, wherein the ferrite powder is Ni-Zn soft magnetic ferrite, Mn-Mg soft magnetic ferrite, or Cu-Zn soft magnetic ferrite. A silicone rubber coated heating wire that emits far-infrared rays, which is any one of Ba ferrite. On the heating line 10, a mixture of silicone rubber, far-infrared radiation material and powder of heat transfer material for facilitating heat transfer, a curing agent for curing silicone rubber composition, and a coloring agent for expressing the color of silicone rubber composition In the silicone rubber coated heating wire that emits far infrared rays coated with the silicone rubber composition, The primary powder is first coated with a silicone rubber coating 30 on the heating wire 10, and the ferroelectric powder which emits far infrared rays to the ferrite powder, which is a powder that improves thermal conductivity and emits far infrared rays on the silicone rubber coating 30, A silicone rubber-coated heating wire, which is coated with a composition containing at least one powder of SiO ₂ powder and elvan stone powder. The silicone rubber composition according to claim 6, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, The powder is a silicone rubber coated heating wire that emits far-infrared rays, characterized in that the ferrite powder and SiO ₂ powder is mixed in a weight ratio of 60 to 80:20 to 40. The silicone rubber composition according to claim 6, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, The powder is a silicone rubber coated heating wire that emits far-infrared rays, characterized in that the ferrite powder, SiO ₂ powder and jade powder are mixed in a weight ratio of 60 to 80: 10 to 20: 10 to 20. The silicone rubber composition according to claim 6, wherein the silicone rubber composition that emits far-infrared rays is mixed at a weight ratio of 60 to 90: 5 to 35: 1 to 2: 3 to 4 with a mixing ratio of silicone rubber, powder, curing agent, and coloring agent, Said powder is a far-infrared-silicon-coated heating wire, characterized in that ferrite powder, SiO ₂ powder, jade powder and ganban stone powder are mixed in a weight ratio of 60 to 80: 7 to 15: 7 to 15: 6 to 10. The ferrite powder according to any one of claims 6 to 9, wherein the ferrite powder is Ni-Zn soft magnetic ferrite, Mn-Mg soft magnetic ferrite, or Cu-Zn soft magnetic ferrite. A silicone rubber coated heating wire that emits far-infrared rays, which is any one of Ba ferrite.