CN111410845A

CN111410845A - Silica gel line

Info

Publication number: CN111410845A
Application number: CN202010335264.8A
Authority: CN
Inventors: 薛小燕; 陈文静
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-07-14

Abstract

The invention belongs to the technical field of power wires, and particularly relates to a silica gel wire which comprises a wire core, an insulating layer and a radiating fin; the wire core is a carbon fiber electric heating body; the insulating layer is cast on the surface of the wire core; the insulating layer is made of a heat-conducting silicon gel material; the surface of one side of the insulating layer, which is far away from the wire core, is designed to be uniformly convex; a supporting layer is coated outside the insulating layer; the supporting layer is made of a heat shrinkage material; the supporting layer is designed in a Y shape; the outer side of the supporting layer is coated with the outer skin; the inside of the outer skin is fixedly connected with uniformly distributed expansion bodies; the expansion body is made of thermal expansion materials; one side of the outer skin, which is far away from the supporting layer, is fixedly connected with elastic radiating fins which are uniformly distributed; the elastic radiating fins are arranged close to the outer skin in the initial state, and the grooves are formed on the surface of the silica gel wire by arranging the supporting layer and the expansion body and utilizing heat generated by the wire core to be matched with the elastic radiating fins, so that the radiating area is increased, and the heat conduction rate is accelerated.

Description

Silica gel line

Technical Field

The invention belongs to the technical field of power wires, and particularly relates to a silica gel wire.

Background

The silica gel wire is an electric wire with an outer layer prepared by using the silica gel, and is widely applied to high-temperature wire loops of lighting lamps, household appliances, electric heating appliances, instrument instruments, motor lead wires, electronics, lamps, dyeing tools and the like because of having beneficial high-temperature resistance and low-temperature resistance; the heating wire is also called as an electric heating wire, as the name suggests, the wire that utilizes the thermal effect of electric current to generate heat after its circular telegram, divide mainly to have nichrome wire, constantan wire, carbon fiber etc. according to the conductor, current heating wire its crust is mostly enamelled resistance line, very easily take place the crust when using because of phenomenon such as folding fracture, current heating wire is when the operation of generating heat simultaneously, because the hindrance of electric wire crust makes the sinle silk generate heat in the source heat diffusion receive the hindrance to external in-process, lead to the slow and heat loss of heating efficiency more.

A silica gel electric heating wire that china patent issued, patent number: 2008201191487, comprising heating wire, the said heating wire is coiled on the core wire twisted by glass silk thread in spiral shape, the outer wall twisted by glass silk thread and heating wire is coated with silica gel layer, because the said heating wire is wound on the glass fiber silk thread evenly, so the flexibility is better than the straight line heating wire, the heat conduction is not easy to break, but is even and fast, but the invention uses the silica gel layer to coat the heating wire directly, the heat conduction performance is not strong, the heat generated by heating wire is transferred to the outside slowly.

In view of this, the present company developed a silica gel thread to solve the above problems.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that the heat conduction performance of the outer skin of the existing heating wire is poor, the internal temperature cannot be rapidly transmitted to the outside, and the outer skin of the existing heating wire has high temperature resistance, but the texture becomes brittle and the pressure resistance is poor in a high-temperature environment, the invention provides the silica gel wire.

The technical scheme adopted by the invention for solving the technical problems is as follows: according to the silica gel wire, the silica gel wire comprises the outer skin; the skin is prepared from the following raw materials:

30-35 parts of dimethyl siloxane, 2-4 parts of vinyl siloxane, 4-6 parts of dimethyl silicone oil, 5-6 parts of polyamide resin, 0.5-0.8 part of silane coupling agent, 0.2-0.3 part of zinc stearate, 0.8-1 part of white carbon black, 0.1-0.6 part of potassium hydroxide and 1.2-1.5 parts of nano aluminum oxide;

the preparation method of the silica gel line comprises the following steps:

s1: introducing dimethyl siloxane into a vacuum reaction kettle, heating and dehydrating in a vacuum environment, heating the dimethyl siloxane to 140 ℃ after dehydration is finished, and sequentially adding vinyl siloxane, dimethyl silicone oil, a silane coupling agent and zinc stearate into the reaction kettle to perform polymerization reaction; the dimethyl siloxane is dehydrated under the vacuum state, the dehydration operation is quickly and accurately finished by utilizing the principle that water can be quickly volatilized under the vacuum state, and meanwhile, the melting point of a substance under the vacuum state is reduced to a certain degree, so that the molten state fluidity of the dimethyl siloxane can be effectively maintained;

s2: after the polymerization reaction is finished, standing the mixture in the reaction kettle for 0.5-1 h to obtain colloid, preheating the colloid to 50-70 ℃, introducing the colloid into a low molecular weight remover, controlling the temperature in the low molecular weight remover to continuously rise to 120-140 ℃ at the speed of 0.3-0.5 ℃/s, and after the removal is finished, preparing the methylvinylsiloxane colloid; standing the mixture after the polymerization reaction is completed, and layering the micromolecular substance and the colloid by utilizing the polymerization characteristic after the physicochemical reaction is fully completed, thereby facilitating the completion of the low-removing operation;

s3: introducing methyl vinyl siloxane colloid, polyamide resin and a silane coupling agent into a reaction kettle, controlling the temperature before, during and after the reaction to be 80-90 ℃, 110-120 ℃ and 130-140 ℃, standing for 0.5-1 h after stirring and mixing, and controlling the temperature in the reaction kettle to keep warm continuously during standing; the temperature in the reaction kettle is controlled to rise in a three-stage manner, so that the high-temperature denaturation of the methylvinylsiloxane caused by overhigh local temperature in the reaction kettle can be effectively avoided, and meanwhile, the materialization reaction in the reaction kettle can be completed in a sectional manner, so that the materialization reaction is completely completed;

s4: introducing a mixture of white carbon black, carbon fiber, potassium hydroxide and nano-alumina into a planetary ball mill, continuously milling, introducing into a filter sieve after milling is finished, controlling the number of filter sieve meshes to be 600-800 meshes, introducing the mixed and filtered powdery mixture into a reaction kettle which is kept at a constant temperature and is kept stand in S3, and continuously stirring to obtain modified methyl vinyl silicone rubber; the white carbon black, the carbon fibers, the potassium hydroxide and the nano aluminum oxide are fully ground and mixed, the granularity of the powdery additive is controlled, the additive is uniformly dispersed into the colloid on one hand, and on the other hand, the adhesion among the powdery substances is avoided to be large-particle substances. Thereby reducing the fluidity and the fineness of the finished product;

s5, introducing the modified methyl vinyl silicone rubber and the wire core into a casting machine together, and introducing the modified methyl vinyl silicone rubber blank into a vulcanization pipe for vulcanization treatment after the casting and the molding are finished, so as to obtain a modified methyl vinyl silicone rubber wire; the modified methyl vinyl silicone rubber blank is introduced into a vulcanization pipe for vulcanization treatment, so that various performances of the prepared methyl vinyl silicone rubber such as elasticity, weather resistance, heat resistance and the like can be effectively enhanced, and the performance of the prepared finished product is more excellent;

the methyl vinyl silicone rubber prepared from dimethyl siloxane and vinyl siloxane has excellent high-temperature resistance and high-temperature compression deformation resistance, and is widely applied to rubber products such as heating wires, sealing rings and the like which work in a high-temperature environment;

on one hand, a small amount of white carbon black added in the raw materials is used for enhancing the aging resistance of the modified methyl vinyl silicone rubber in a high-temperature environment, and simultaneously is used for enhancing the electrical insulation of the modified methyl vinyl silicone rubber, so that the modified methyl vinyl silicone rubber can effectively avoid the generation of static electricity and magnetic fields on the surface layer of the electric wire when being used as the outer skin of the electric heating wire.

Preferably, the raw materials also comprise a micro spring; the micro spring is made of pure copper material; copper is used as a high-quality heat-conducting metal, the copper is not used as a heat-conducting and heat-radiating element due to the property of easy oxidation at high temperature, the copper spring is wrapped in the modified methyl vinyl silicone rubber, and is isolated from the outside air, so that the heat-conducting property of the modified methyl vinyl silicone rubber is effectively enhanced, meanwhile, the structure of the spring body effectively enhances the elastic capacity of the skin prepared from the modified methyl vinyl silicone rubber, the skin prepared from the modified methyl vinyl silicone rubber has stronger resistance to the outside pressure, and the inner part of the silica gel line is protected and supported.

Preferably, the raw material also comprises vapor grown carbon fiber; the vapor grown carbon fiber means that specific mixed gas is pyrolyzed and precipitated on catalyst particles at high temperature to grow into carbon fiber, the carbon fiber is added into the modified methyl vinyl silicone rubber to be modified, the strength and elasticity of the modified methyl vinyl silicone rubber can be effectively enhanced, and simultaneously, the excellent oxidation resistance and corrosion resistance of the vapor grown carbon fiber can effectively enhance the resistance of the outer skin of the silica gel wire prepared from the modified methyl vinyl silicone rubber to external solvents and oxidation when the silica gel wire is used as a heating wire, so that the service life of the manufactured silica gel wire is longer.

Preferably, the silica gel line further comprises a wire core, an insulating layer and a heat sink; the wire core is a carbon fiber electric heating body; the insulating layer is cast on the surface of the wire core; the insulating layer is made of a heat-conducting silicon gel material; the surface of one side of the insulating layer, which is far away from the wire core, is designed to be uniformly convex; a supporting layer is coated outside the insulating layer; the supporting layer is made of a heat shrinkage material; the supporting layer is designed in a Y shape; the outer side of the supporting layer is coated with the outer skin; the inside of the outer skin is fixedly connected with uniformly distributed expansion bodies; the expansion body is made of thermal expansion materials; one side of the outer skin, which is far away from the supporting layer, is fixedly connected with elastic radiating fins which are uniformly distributed; the elastic radiating fins are arranged close to the outer skin in the initial state;

when the electric heating cable works, current flows into the cable core, so that the cable core which is essentially a carbon fiber electric heating body emits far infrared rays and further generates heat, the insulating layer coated on the cable core conducts the heat, the heat is uniformly dissipated outside, the heat dissipated outside enables the whole silica gel cable to be heated, so that the supporting layer is contracted, the volume of an expansion body positioned in the sheath is increased, meanwhile, the texture of the sheath which is essentially modified methyl vinyl silicone rubber is softened due to high temperature, the expansion and contraction of the expansion body and the supporting layer enable the surface of the sheath far away from the cable core to deform, so that a uniform groove is formed, the surface area of the outer layer of the silica gel cable is effectively increased, the heat dissipation capacity of the silica gel cable is enhanced, the heat dissipated by the carbon fiber electric heating body at the cable core is more quickly dissipated in the air, the outside is further heated, and when the surface, the elastic radiating fins which are fixedly connected to the surface of the outer skin and tightly attached to the outer skin in the initial state are converted into a state of forming a certain angle with the outer skin due to the deformation of the outer skin, and meanwhile, the elastic radiating fins are fixedly connected with the outer skin, so that the radiating area of the outer skin of the silica gel wire is effectively enhanced, the rate of heat conduction of the silica gel wire to the air is further enhanced, and the heating wire prepared from the silica gel wire has higher heat conduction rate.

Preferably, the elastic radiating fin is internally coated with a first metal sheet and a second metal sheet which are uniformly distributed; the first metal sheet is fixedly connected with the two ends of the second metal sheet through springs; the first metal sheet is positioned on one side of the elastic radiating fin far away from the outer skin, and the second metal sheet is positioned on one side of the elastic radiating fin close to the outer skin; the thermal expansion coefficient of the second metal sheet is far greater than that of the first metal sheet; when the heat dissipation structure works, the wire core dissipates heat when current passes through the wire core, the heat is dissipated outwards to enable the silica gel wire to be in a high-temperature environment, the temperature of the first metal sheet and the second metal sheet in the elastic heat dissipation sheet is increased, since the second metal sheet has a thermal expansion coefficient much greater than that of the first metal sheet, when the temperature rises to a certain extent, the second metal sheet with larger expansion rate is pulled and pulled to be bent by the first metal sheet with smaller expansion rate, so that the elastic heat radiating fin is bent, because the second metal sheet is close to one side of the outer skin, the bending direction of the elastic radiating fins faces to the outside, the elastic radiating fins surrounding the surface of the outer skin are bent to the outside by utilizing the different thermal expansion coefficients of the first metal sheet and the second metal sheet, therefore, the elastic radiating fins and the outer skin layer are thoroughly separated, the radiating rate of the silica gel line is effectively accelerated, and heat dissipated by the wire core under the action of current is quickly diffused in the air.

Preferably, the surface of one side, close to the outer skin, of the second metal sheet is fixedly connected with third metal sheets which are uniformly distributed; the third metal sheet and the second metal sheet form a certain angle; the during operation, the second sheetmetal takes place the inflation under high temperature environment, thereby is dragged the bending by first sheetmetal, and when the second sheetmetal was crooked, the third sheetmetal that the second sheetmetal side evenly linked firmly formed the support to the elastic cooling fin surface, makes elastic cooling fin side surface form even arch to further increase the heat radiating area of elastic cooling fin, further accelerate the rate of heat dissipation of silica gel line.

The invention has the following beneficial effects:

1. according to the silica gel wire, the methyl vinyl silicone rubber is synthesized between the dimethyl siloxane and the vinyl siloxane, and the methyl vinyl silicone rubber is modified by the polyamide resin, the white carbon black, the nano alumina and the gas-phase grown carbon fiber, so that the deformation capability, the high-temperature aging resistance and the thermal conductivity of the methyl vinyl silicone rubber in a high-temperature environment are effectively enhanced, the heat emitted from the wire core is quickly conducted to the outside by the heating wire prepared from the silica gel wire, and the heat conduction rate of the heating wire is effectively enhanced.

2. According to the silica gel wire, the insulating layer, the supporting layer and the expansion body are arranged, heat emitted from the wire core is conducted through the insulating layer, so that the supporting layer contracts and the expansion body expands, uniform grooves are formed on the outer side of the outer skin of the silica gel wire, the heat dissipation area of the silica gel wire is effectively increased, meanwhile, the elastic heat dissipation fins fixedly connected to the outer skin are matched to further accelerate the heat dissipation rate of the silica gel wire, the heat emitted from the carbon fiber electric heating body at the wire core is rapidly diffused to the outside, and the heat conduction rate of the silica gel wire when the silica gel wire is used as a heating wire is enhanced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a front view of a silicone wire;

FIG. 3 is a diagram of the working state of a silicone wire;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

in the figure: the cable comprises a sheath 1, a cable core 2, an insulating layer 3, a supporting layer 4, an expansion body 11, an elastic radiating fin 12, a first metal sheet 13, a second metal sheet 14 and a third metal sheet 15.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the silica gel thread of the present invention includes a sheath; the skin is prepared from the following raw materials:

the preparation method of the silica gel line comprises the following steps:

s5, introducing the modified methyl vinyl silicone rubber and the wire core 2 into a casting machine, and introducing the modified methyl vinyl silicone rubber blank into a vulcanization pipe for vulcanization treatment after the casting is finished, so as to obtain a modified methyl vinyl silicone rubber wire; the modified methyl vinyl silicone rubber blank is introduced into a vulcanization pipe for vulcanization treatment, so that various performances of the prepared methyl vinyl silicone rubber such as elasticity, weather resistance, heat resistance and the like can be effectively enhanced, and the performance of the prepared finished product is more excellent;

As an embodiment of the invention, the raw material also comprises a micro spring; the micro spring is made of pure copper material; copper is used as a high-quality heat-conducting metal, the copper is not used as a heat-conducting and heat-radiating element due to the property of easy oxidation at high temperature, the copper spring is wrapped in the modified methyl vinyl silicone rubber, and is isolated from the outside air, so that the heat-conducting property of the modified methyl vinyl silicone rubber is effectively enhanced, meanwhile, the structure of the spring body effectively enhances the elastic capacity of the skin prepared from the modified methyl vinyl silicone rubber, the skin prepared from the modified methyl vinyl silicone rubber has stronger resistance to the outside pressure, and the inner part of the silica gel line is protected and supported.

As an embodiment of the present invention, the raw material further includes vapor grown carbon fibers; the vapor grown carbon fiber means that specific mixed gas is pyrolyzed and precipitated on catalyst particles at high temperature to grow into carbon fiber, the carbon fiber is added into the modified methyl vinyl silicone rubber to be modified, the strength and elasticity of the modified methyl vinyl silicone rubber can be effectively enhanced, and simultaneously, the excellent oxidation resistance and corrosion resistance of the vapor grown carbon fiber can effectively enhance the resistance of the outer skin of the silica gel wire prepared from the modified methyl vinyl silicone rubber to external solvents and oxidation when the silica gel wire is used as a heating wire, so that the service life of the manufactured silica gel wire is longer.

As an embodiment of the present invention, the silicone wire further includes a wire core 2, an insulating layer 3, and an elastic heat sink 12; the wire core 2 is a carbon fiber electric heating body; the insulating layer 3 is cast on the surface of the wire core 2; the insulating layer 3 is made of a heat-conducting silicon gel material; the surface of one side of the insulating layer 3, which is far away from the wire core 2, is designed to be uniformly convex; a supporting layer 4 is coated outside the insulating layer 3; the supporting layer 4 is made of a heat-shrinkable material; the supporting layer 4 is in a Y-shaped design; the outer side of the supporting layer 4 is coated with the outer skin; the inside of the outer skin is fixedly connected with uniformly distributed expansion bodies 11; the expansion body 11 is made of thermal expansion materials; one side of the outer skin, which is far away from the supporting layer 4, is fixedly connected with elastic radiating fins 12 which are uniformly distributed; the elastic radiating fins 12 are arranged close to the outer skin in the initial state;

in operation, current flows into the wire core 2, so that the wire core 2 which is essentially a carbon fiber electric heating body emits far infrared rays and generates heat, the insulating layer 3 coated on the wire core 2 conducts the heat, the heat is uniformly dissipated outside, the heat dissipated outside enables the whole silica gel wire to be heated, the supporting layer 4 is contracted, the size of the expansion body 11 positioned in the outer skin is increased, meanwhile, the texture of the outer skin which is essentially modified methyl vinyl silicone rubber is softened due to high temperature, the expansion and contraction of the expansion body 11 and the supporting layer 4 enable the outer skin to deform on the surface far away from the wire core 2, so that uniform grooves are formed, the surface area of the outer layer of the silica gel wire is effectively increased, the heat dissipation capacity of the silica gel wire is enhanced, the heat emitted by the carbon fiber electric heating body at the wire core 2 is more quickly emitted in the air, and the outside is heated, and when the surface of the outer skin of, the elastic radiating fins 12 which are fixedly connected to the surface of the outer skin and tightly attached to the outer skin in the initial state are converted into a state of being tightly attached to the outer skin due to the deformation of the outer skin, and meanwhile, the elastic radiating fins 12 are fixedly connected with the outer skin, so that the radiating area of the outer skin of the silica gel line is effectively increased, the silica gel line is increased to carry out heat conduction to the air, and the heating line prepared by the silica gel line has higher heat conduction rate.

As an embodiment of the present invention, the elastic heat sink 12 is internally wrapped with a first metal sheet 13 and a second metal sheet 14 which are uniformly distributed; the two ends of the first metal sheet 13 and the second metal sheet 14 are fixedly connected through springs; the first metal sheet 13 is positioned on one side of the elastic radiating fin 12 far away from the outer skin, and the second metal sheet 14 is positioned on one side of the elastic radiating fin 12 close to the outer skin; the thermal expansion coefficient of the second metal sheet 14 is far greater than that of the first metal sheet 13; when the radiating structure works, the wire core 2 dissipates heat when current passes through, the heat is dissipated outwards to enable the silica gel wire to be in a high-temperature environment, the temperature of the first metal sheet 13 and the second metal sheet 14 in the elastic radiating fin 12 rises, because the thermal expansion coefficient of the second metal sheet 14 is far larger than that of the first metal sheet 13, when the temperature rises to a certain degree, the second metal sheet 14 with a larger expansion rate bends under the pulling of the first metal sheet 13 with a smaller expansion rate, so that the elastic radiating fin 12 bends, because the second metal sheet 14 is close to one side of the outer skin, the bending direction of the elastic radiating fin 12 faces the outside, the elastic radiating fin 12 surrounding the surface of the outer skin bends outwards by utilizing the different thermal expansion coefficients of the first metal sheet 13 and the second metal sheet 14, so that the elastic radiating fin 12 is thoroughly separated from the outer skin layer, and the radiating rate of the silica gel wire is effectively accelerated, the heat emitted by the wire core 2 under the action of the current is quickly diffused in the air.

As an embodiment of the invention, the surface of the second metal sheet 14 close to one side of the outer skin is fixedly connected with uniformly distributed third metal sheets 15; the third metal sheet 15 and the second metal sheet 14 form a certain angle; during operation, the second metal sheet 14 expands in a high-temperature environment and is pulled by the first metal sheet 13 to be bent, and when the second metal sheet 14 is bent, the third metal sheet 15, which is uniformly and fixedly connected to the side surface of the second metal sheet 14, supports the surface of the elastic radiating fin 12, so that a uniform bulge is formed on the surface of one side of the elastic radiating fin 12, the radiating area of the elastic radiating fin 12 is further increased, and the radiating rate of the silicone rubber wire is further accelerated.

The specific working process is as follows:

in operation, current flows into the wire core 2, so that the wire core 2 which is essentially a carbon fiber electric heating body emits far infrared rays and generates heat, the insulating layer 3 coated on the wire core 2 conducts the heat, the heat is uniformly dissipated outside, the heat dissipated outside enables the whole silica gel wire to be heated, the supporting layer 4 is contracted, the size of the expansion body 11 positioned in the outer skin is increased, meanwhile, the texture of the outer skin which is essentially modified methyl vinyl silicone rubber is softened due to high temperature, the expansion and contraction of the expansion body 11 and the supporting layer 4 enable the outer skin to deform on the surface far away from the wire core 2, so that uniform grooves are formed, the surface area of the outer layer of the silica gel wire is effectively increased, the heat dissipation capacity of the silica gel wire is enhanced, the heat emitted by the carbon fiber electric heating body at the wire core 2 is more quickly emitted in the air, and the outside is heated, and when the surface of the outer skin of, the temperature of the first metal sheet 13 and the second metal sheet 14 in the elastic heat sink 12 rises, because the thermal expansion coefficient of the second metal sheet 14 is far greater than that of the first metal sheet 13, when the temperature rises to a certain degree, the second metal sheet 14 with a large expansion rate bends under the pulling of the first metal sheet 13 with a small expansion rate, so that the elastic heat sink 12 bends, because the second metal sheet 14 is close to one side of the outer skin, the bending direction of the elastic heat sink 12 faces the outside, and by utilizing the different thermal expansion coefficients of the first metal sheet 13 and the second metal sheet 14, the elastic heat sink 12 surrounding the surface of the outer skin bends to the outside, so that the elastic heat sink 12 and the outer skin are completely separated, and the heat dissipation area of the surface of the silicone thread is accelerated.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A silica gel line which is characterized in that: the silica gel thread comprises an outer skin; the skin is prepared from the following raw materials:

the preparation method of the silica gel line comprises the following steps:

s1: introducing dimethyl siloxane into a vacuum reaction kettle, heating and dehydrating in a vacuum environment, heating the dimethyl siloxane to 140 ℃ after dehydration is finished, and sequentially adding vinyl siloxane, dimethyl silicone oil, a silane coupling agent and zinc stearate into the reaction kettle to perform polymerization reaction;

s2: after the polymerization reaction is finished, standing the mixture in the reaction kettle for 0.5-1 h to obtain colloid, preheating the colloid to 50-70 ℃, introducing the colloid into a low molecular weight remover, controlling the temperature in the low molecular weight remover to continuously rise to 120-140 ℃ at the speed of 0.3-0.5 ℃/s, and after the removal is finished, preparing the methylvinylsiloxane colloid;

s3: introducing methyl vinyl siloxane colloid, polyamide resin and a silane coupling agent into a reaction kettle, controlling the temperature before, during and after the reaction to be 80-90 ℃, 110-120 ℃ and 130-140 ℃, standing for 0.5-1 h after stirring and mixing, and controlling the temperature in the reaction kettle to keep warm continuously during standing;

s4: introducing a mixture of white carbon black, carbon fiber, potassium hydroxide and nano-alumina into a planetary ball mill, continuously milling, introducing into a filter sieve after milling is finished, controlling the number of filter sieve meshes to be 600-800 meshes, introducing the mixed and filtered powdery mixture into a reaction kettle which is kept at a constant temperature and is kept stand in S3, and continuously stirring to obtain modified methyl vinyl silicone rubber;

and S5, introducing the modified methyl vinyl silicone rubber and the wire core (2) into a casting machine, casting, introducing the modified methyl vinyl silicone rubber wire blank into a vulcanization pipe for vulcanization treatment after the casting is finished, and thus obtaining the modified methyl vinyl silicone rubber wire.

2. The silica gel thread of claim 1, wherein: wherein the raw material also comprises a micro spring; the micro spring is made of pure copper material.

3. The silica gel thread of claim 1, wherein: wherein the raw material also comprises vapor grown carbon fiber.

4. The silica gel thread of claim 1, wherein: the silica gel wire also comprises a wire core (2), an insulating layer (3) and an elastic radiating fin (12); the wire core (2) is a carbon fiber electric heating body; the insulating layer (3) is cast on the surface of the wire core (2); the insulating layer (3) is made of a heat-conducting silicon gel material; the surface of one side of the insulating layer (3) far away from the wire core (2) is designed to be uniformly convex; a supporting layer (4) is coated outside the insulating layer (3); the supporting layer (4) is made of a heat shrinkage material; the supporting layer (4) is designed in a Y shape; the outer side of the supporting layer (4) is coated with the outer skin; expansion bodies (11) which are uniformly distributed are fixedly connected inside the outer skin; the expansion body (11) is made of thermal expansion materials; one side of the outer skin, which is far away from the supporting layer (4), is fixedly connected with elastic radiating fins (12) which are uniformly distributed; the elastic heat sink (12) is disposed in close contact with the outer skin in an initial state.

5. The silica gel thread of claim 4, wherein: the elastic radiating fins (12) are internally coated with first metal sheets (13) and second metal sheets (14) which are uniformly distributed; the two ends of the first metal sheet (13) are fixedly connected with the two ends of the second metal sheet (14) through springs; the first metal sheet (13) is positioned on one side, far away from the outer skin, of the elastic radiating fin (12), and the second metal sheet (14) is positioned on one side, close to the outer skin, of the elastic radiating fin (12); the second metal sheet (14) has a coefficient of thermal expansion much greater than that of the first metal sheet (13).

6. A silica gel thread according to claim 5, wherein: the surface of one side, close to the outer skin, of the second metal sheet (14) is fixedly connected with third metal sheets (15) which are uniformly distributed; the third metal sheet (15) and the second metal sheet (14) form a certain angle.