An automotive wiring harness tape and its preparation method

Abstract

The present invention provides an automotive wiring harness tape and a preparation method thereof. The wiring harness tape consists of a shielding layer and a rubber coating layer. The shielding layer is prepared from materials such as polyester fiber, nylon fiber, glass fiber, carbon fiber and conductive composite fiber, and has excellent electromagnetic shielding capabilities. The rubber coating layer is formed by mixing an antioxidant, a light stabilizer and silicone rubber, which effectively reduces the VOC release of the tape while ensuring good aging resistance and mechanical properties. The preparation method includes the steps of fiber mixing, heat setting treatment, rubber coating layer preparation and cutting. By precisely controlling the proportion of each component and process parameters, the continuity and stability of the tape are ensured. The automotive wiring harness tape of the present invention not only has excellent electromagnetic shielding performance, but also has good low fogging and mechanical properties, and is suitable for complex automotive electromagnetic environments.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring harness tapes, and in particular to an automobile wiring harness tape and a preparation method thereof. Background Art

[0002] With the rapid development of automotive electronics, automotive wiring harness tape, as an indispensable component of automotive electronic systems, plays a crucial role in protecting wires and cables, enhancing electromagnetic shielding capabilities, and ensuring the stable operation of electronic equipment. However, with the rapid advancement of automotive electronics and intelligentization, automotive wiring harness systems have become increasingly complex, and their safety and reliability have attracted widespread attention. As a key component in wiring harness systems, automotive wiring harness tape performs multiple functions, including securing, insulating, protecting, and ensuring electromagnetic compatibility. New energy vehicles, in particular, place new demands on wiring harness tape, such as higher temperature resistance and improved electromagnetic shielding capabilities.

[0003] Currently, most common automotive wiring harness tapes on the market use polyester fibers, nylon fibers, and other materials as base materials, and enhance electromagnetic shielding capabilities by adding conductive materials. However, these traditional wiring harness tapes still have certain limitations, mainly in terms of electromagnetic wave shielding capabilities, low fogging requirements, and mechanical properties.

[0004] Inadequate electromagnetic wave shielding: With the increasing number of electronic devices in vehicles, electromagnetic interference (EMI) is becoming an increasingly serious problem. This requires wiring harness tapes to not only provide basic insulation and protection functions but also excellent electromagnetic wave shielding capabilities to reduce the impact of EMI on automotive electronic systems. However, existing tapes often use a single shielding material, such as pure metal or a single type of conductive fiber, which makes it difficult to achieve high-frequency shielding effectiveness.

[0005] Low fogging requirement: The interior space of a car is relatively closed. If volatile organic compounds (VOCs) are released during the use of wiring harness tapes, it will not only affect the air quality in the car, but may also cause harm to the health of passengers. Therefore, low fogging has become an important environmental protection requirement for automotive wiring harness tapes. However, when some tapes are used in high-temperature environments, they are prone to fogging due to the volatilization of the base material or additives, which obstructs the line of sight in the car and affects driving safety. Insufficient mechanical properties: Automobile wiring harnesses are subjected to various mechanical stresses such as stretching, bending, and compression during use. This requires that wiring harness tapes must have good mechanical properties, including sufficient tensile strength and peeling force, to ensure that the wiring harness can be reliably fixed under various working conditions. However, due to material selection or process limitations, the mechanical properties of existing tapes may be insufficient and cannot meet the needs of long-term, high-load operation of automobiles. Summary of the Invention

[0006] In view of this, the present invention provides an automotive wiring harness tape and a preparation method thereof to solve the above problems.

[0007] The technical solution of the present invention is achieved as follows: an automotive wiring harness tape: the wiring harness tape includes a shielding layer and a rubber coating layer, the shielding layer includes the following raw materials in parts by weight: 40-60 parts of polyester fiber, 35-55 parts of nylon fiber, 12-25 parts of glass fiber, 8-12 parts of carbon fiber, 25-35 parts of conductive composite fiber, and 12-22 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm; the coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and mixing them, and the mass ratio of the antioxidant, light stabilizer and silicone rubber is (15-25):(8-12):100.

[0008] Furthermore, the wiring harness tape includes a shielding layer and a rubber coating layer, and the shielding layer is made of the following raw materials in parts by weight: 50 parts of polyester fiber, 45 parts of nylon fiber, 18 parts of glass fiber, 10 parts of carbon fiber, 30 parts of conductive composite fiber, and 17 parts of potassium titanate whiskers; the mass ratio of the antioxidant, light stabilizer and silicone rubber is 20:10:100.

[0009] Furthermore, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of (12-25):(5-10):(8-12) with a shielding factor.

[0010] Furthermore, the shielding factor includes metal powder, absorbing material, and metal oxide in a mass ratio of (6.5-9.5):(1.2-3.5):(2.5-4.5).

[0011] Furthermore, the metal powder is selected from any one of copper powder, silver powder, nickel powder or aluminum powder.

[0012] Furthermore, the absorbing material is selected from any one of nickel-zinc-copper alloy, perovskite ferrite, iron arsenide, and carbon black.

[0013] Furthermore, the metal oxide is selected from any one of indium oxide, indium tin oxide, copper oxide, and iron oxide.

[0014] Furthermore, the antioxidant is a diaryl secondary amine, thiodipropionate, and salicylaldehyde oxime in a mass ratio of (23-50):(10-20):(5-8), and salicylaldehyde oxime can prevent heavy metal ions from catalyzing the degradation reaction of the polymer.

[0015] Furthermore, the light stabilizer is phenyl o-hydroxybenzoate, formamide, and 1,4-butanediol in a mass ratio of (5.9-15.2):(2.5-3.5):(1.2-2.2).

[0016] Furthermore, a method for preparing an automotive wiring harness tape comprises the following steps:

[0017] S1. Preparation of shielding layer: Polyester fiber, nylon fiber, glass fiber, and carbon fiber are placed in a mixing device according to a certain proportion and stirred evenly. Then, conductive composite fiber and potassium titanate whisker are added to the mixed fibers and mixed evenly again. A uniform fiber mesh is formed by knitting, braiding, or melt-blowing. Then, a heat-setting treatment is performed using a hot press at a temperature of 160-220°C, a pressure of 4-6 MPa, and a time of 5-10 minutes. Finally, the desired shielding layer shape and size is formed by a mold;

[0018] S2. Prepare the coating layer: put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoat, and apply the electrocoat to one side of the shielding layer in an amount of 40-60g / m 2 Then place it under a low-pressure UV mercury lamp with a wavelength of 254-258nm for 2-4 hours, and an energy of 55-75mj / cm 2 , forming a rubber coating layer on the surface of the shielding layer, placing it in a calender and pressing it at a temperature of 150-170°C and a pressure of 8-12 MPa for 1-5 hours to form a continuous tape substrate;

[0019] S3. Preparing a wiring harness tape: cutting the tape substrate using a cutting machine to form a wiring harness tape.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a novel automotive wiring harness tape and a preparation method thereof. By compounding a variety of fiber materials in the shielding layer, such as polyester fiber, nylon fiber, glass fiber, carbon fiber and conductive composite fiber, and adding potassium titanate whiskers, the electromagnetic wave shielding capability of the tape is significantly improved. At the same time, antioxidants and light stabilizers are added to the coating layer, and silicone rubber is used as the base material, which solves the low-fog problem of the wiring harness tape and meets the low-fog requirement. Radiation curing technology is used instead of traditional solvent-based coating to reduce the generation of volatile organic compounds (VOCs), thereby improving its aging resistance and service life. In addition, by optimizing the fiber ratio and the gluing process, the tensile strength and peeling force of the tape are greatly improved, and its mechanical properties are enhanced. The wiring harness tape of the present invention achieves environmentally friendly, efficient and reliable electromagnetic compatibility protection on the basis of ensuring electrical insulation and mechanical fixation, and is suitable for the high standards of modern automotive wiring harness systems. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, specific examples are provided below to further illustrate the present invention.

[0023] Unless otherwise specified, the experimental methods used in the examples of the present invention are all conventional methods.

[0024] Unless otherwise specified, the materials, reagents, etc. used in the examples of the present invention can be obtained from commercial sources.

[0025] Example 1

[0026] An automotive wiring harness tape: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 40 parts of polyester fiber, 35 parts of nylon fiber, 12 parts of glass fiber, 8 parts of carbon fiber, 25 parts of conductive composite fiber, and 12 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 12:5:8 with a shielding factor; the shielding factor includes copper powder, carbon black and indium oxide in a mass ratio of 6.5:1.2:2.5;

[0027] The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and mixing them. The mass ratio of the antioxidant, light stabilizer and silicone rubber is 15:8:100; the antioxidant is a diaryl secondary amine, thiodipropionate, and salicylaldehyde oxime in a mass ratio of 23:10:5; the light stabilizer is phenyl o-hydroxybenzoate, formamide, and 1,4-butanediol in a mass ratio of 5.9:2.5:1.2.

[0028] Example 2

[0029] An automotive wiring harness tape: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 60 parts of polyester fiber, 55 parts of nylon fiber, 25 parts of glass fiber, 12 parts of carbon fiber, 35 parts of conductive composite fiber, and 22 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 25:10:12 with a shielding factor; the shielding factor includes silver powder, iron arsenide and indium tin oxide in a mass ratio of 9.5:3.5:4.5;

[0030] The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and kneading them. The mass ratio of the antioxidant, light stabilizer and silicone rubber is 25:12:100. The antioxidant is a diaryl secondary amine, thiodipropionate and salicylaldehyde oxime in a mass ratio of 50:20:8; the light stabilizer is phenyl o-hydroxybenzoate, formamide and 1,4-butanediol in a mass ratio of 15.2:3.5:2.2.

[0031] Example 3

[0032] An automotive wiring harness tape: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 50 parts of polyester fiber, 45 parts of nylon fiber, 20 parts of glass fiber, 10 parts of carbon fiber, 30 parts of conductive composite fiber, and 17 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 18:8:10 with a shielding factor; the shielding factor includes nickel powder, nickel-zinc-copper alloy and copper oxide in a mass ratio of 8:2.2:3.5;

[0033] The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and kneading them, wherein the mass ratio of the antioxidant, light stabilizer and silicone rubber is 20:10:100; the antioxidant is a diaryl secondary amine, thiodipropionate, and salicylaldehyde oxime in a mass ratio of 36:15:7; the light stabilizer is phenyl o-hydroxybenzoate, formamide, and 1,4-butanediol in a mass ratio of 10:3:1.7;

[0034] The above examples 1-3 were prepared by the following preparation methods:

[0035] S1. Preparation of shielding layer: Polyester fiber, nylon fiber, glass fiber, and carbon fiber are placed in a mixing device according to a certain proportion and stirred evenly. Then, conductive composite fiber and potassium titanate whisker are added to the mixed fibers and mixed evenly again. A uniform fiber mesh is formed by knitting, braiding, or melt-blowing. Then, a heat-setting treatment is performed using a hot press at a temperature of 190°C, a pressure of 5 MPa, and a time of 8 minutes. Finally, the desired shielding layer shape and size is formed by a mold;

[0036] S2. Prepare the coating layer: put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoat, and apply the electrocoat to one side of the shielding layer in an amount of 50g / m 2 Then, the sample was irradiated under a low-pressure UV mercury lamp with a wavelength of 256 nm and an energy of 65 mj / cm 2 , forming a rubber coating layer on the surface of the shielding layer, placing it in a calender and pressing it at a temperature of 160°C and a pressure of 10 MPa for 3 hours to form a continuous tape substrate;

[0037] S3. Preparing a wiring harness tape: cutting the tape substrate using a cutting machine to form a wiring harness tape.

[0038] Example 4

[0039] An automotive wiring harness tape: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 50 parts of polyester fiber, 45 parts of nylon fiber, 20 parts of glass fiber, 10 parts of carbon fiber, 30 parts of conductive composite fiber, and 17 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 18:8:10 with a shielding factor; the shielding factor includes nickel powder, nickel-zinc-copper alloy and copper oxide in a mass ratio of 8:2.2:3.5;

[0040] The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and kneading them, wherein the mass ratio of the antioxidant, light stabilizer and silicone rubber is 20:10:100; the antioxidant is a diaryl secondary amine, thiodipropionate, and salicylaldehyde oxime in a mass ratio of 36:15:7; the light stabilizer is phenyl o-hydroxybenzoate, formamide, and 1,4-butanediol in a mass ratio of 10:3:1.7;

[0041] The above-mentioned Example 4 was prepared by the following preparation method:

[0042] S1. Preparation of shielding layer: Polyester fiber, nylon fiber, glass fiber, and carbon fiber are placed in a mixing device according to a certain proportion and stirred evenly. Then, conductive composite fiber and potassium titanate whisker are added to the mixed fibers and mixed evenly again. A uniform fiber mesh is formed by knitting, braiding, or melt-blowing. Then, a heat-setting treatment is performed using a hot press at a temperature of 160°C, a pressure of 4 MPa, and a time of 5 minutes. Finally, the desired shielding layer shape and size is formed by a mold;

[0043] S2. Prepare the coating layer: put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoat, and apply the electrocoat to one side of the shielding layer with a coating amount of 40g / m 2 Then, the light was irradiated under a low-pressure UV mercury lamp with a wavelength of 254 nm and an energy of 55 mj / cm 2 , forming a rubber coating layer on the surface of the shielding layer, placing it in a calender and pressing it at a temperature of 150°C and a pressure of 8 MPa for 1 hour to form a continuous tape substrate;

[0044] S3. Preparing a wiring harness tape: cutting the tape substrate using a cutting machine to form a wiring harness tape.

[0045] Example 5

[0046] An automotive wiring harness tape: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 50 parts of polyester fiber, 45 parts of nylon fiber, 20 parts of glass fiber, 10 parts of carbon fiber, 30 parts of conductive composite fiber, and 17 parts of potassium titanate whiskers; the resistivity of the conductive composite fiber is less than 1×10 8 Ω·cm, the conductive composite fiber is made by blending and spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 18:8:10 with a shielding factor; the shielding factor includes nickel powder, nickel-zinc-copper alloy and copper oxide in a mass ratio of 8:2.2:3.5;

[0047] The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and kneading them, wherein the mass ratio of the antioxidant, light stabilizer and silicone rubber is 20:10:100; the antioxidant is a diaryl secondary amine, thiodipropionate, and salicylaldehyde oxime in a mass ratio of 36:15:7; the light stabilizer is phenyl o-hydroxybenzoate, formamide, and 1,4-butanediol in a mass ratio of 10:3:1.7;

[0048] The above-mentioned Example 5 was prepared by the following preparation method:

[0049] S1. Preparation of shielding layer: Polyester fiber, nylon fiber, glass fiber, and carbon fiber are placed in a mixing device according to a certain proportion and stirred evenly. Then, conductive composite fiber and potassium titanate whisker are added to the mixed fibers and mixed evenly again. A uniform fiber mesh is formed by knitting, braiding, or melt-blowing. Then, a heat-setting treatment is performed using a hot press at a temperature of 220°C, a pressure of 6 MPa, and a time of 10 minutes. Finally, the desired shielding layer shape and size is formed by a mold;

[0050] S2. Prepare the coating layer: put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoat, and apply the electrocoat to one side of the shielding layer with a coating amount of 60g / m 2 Then, the samples were irradiated under a low-pressure UV mercury lamp with a wavelength of 258 nm and an energy of 75 mj / cm 2 , forming a rubber coating layer on the surface of the shielding layer, placing it in a calender and pressing it at a temperature of 170°C and a pressure of 12 MPa for 5 hours to form a continuous tape substrate;

[0051] S3. Preparing a wiring harness tape: cutting the tape substrate using a cutting machine to form a wiring harness tape.

[0052] Comparative Example 1

[0053] The difference between this comparative example and Example 3 is that the shielding layer of the wiring harness tape does not contain conductive composite fibers.

[0054] Comparative Example 2

[0055] The difference between this comparative example and Example 3 is that the conductive composite fiber of the shielding layer of the wiring harness tape is made by spinning polyaniline fiber, polypyrrole fiber and polythiophene fiber in a mass ratio of 18:8:10; and no shielding factor is added.

[0056] Comparative Example 3

[0057] The difference between this comparative example and Example 3 is that no antioxidant is added to the adhesive coating layer of the wiring harness tape.

[0058] Comparative Example 4

[0059] The difference between this comparative example and Example 3 is that no light stabilizer is added to the adhesive coating layer of the wiring harness tape.

[0060] Test Example 1

[0061] The automotive wiring harness tape prepared above was compared with commercially available wiring harness tape to test its high temperature resistance, electromagnetic wave shielding capability, and low fogging performance;

[0062] (1) High temperature resistance: The wire harness tape was placed in an environment of 50°C, 100°C, and 150°C and irradiated with 2000 lux for 24 hours. Its tensile strength and peeling force were tested. The tensile strength was tested using a tensile testing machine. The peeling force tester was used to stick the tape on the test surface of the glass plate. The tape was peeled off at 180° and the force required during the peeling process was recorded.

[0063] (2) Electromagnetic wave shielding capability: tested using a shielding effectiveness tester;

[0064] (3) Volatile organic compound (VOC) test: The tape was placed in a sealed test chamber, heated to 80°C, and tested using a haze meter. The test results are shown in the following table:

[0065]

[0066] The results show that the automotive wiring harness tape of the present invention has good high temperature resistance. At 50-150°C, the tensile strength remains at a high level and does not change much, showing good thermal stability. The peel force of the embodiment also remains at a relatively stable level, showing that the adhesion between the tape and the adherend is relatively uniform and stable. The peel force of the comparative group and commercially available products is generally low, and the drop rate is large at high temperatures, which may affect the long-term use effect of the tape. The shielding range of the embodiment group can cover the frequency of 2.3-3GHz and has good electromagnetic wave shielding ability. The VOC emission of the embodiment and the comparative example is very low, both less than 0.09mg / m 3 , which complies with the standards of the Passenger Car Interior Air Quality Assessment Guidelines (GB / T 27630-2011).

[0067] Comparing Example 3 with Comparative Examples 1 and 2, the conductive properties of polyaniline, polypyrrole and polythiophene can be further enhanced by blending with shielding factors. The improved conductive properties of the conductive composite fiber help reduce resistance loss and can significantly improve the electromagnetic shielding performance of the wiring harness tape, which can effectively intercept and shield electromagnetic waves.

[0068] Compared with Comparative Examples 3 and 4, Example 3 shows that antioxidants and light stabilizers are distributed in silicone rubber and mixed to prepare a coating layer. Antioxidants can help capture and neutralize free radicals by reacting with free radicals, thereby reducing the number and activity of free radicals. This helps prevent free radicals from damaging the tape material, reduces the breakage and recombination of chemical bonds, reduces the scattering and reflection of light, improves mechanical properties, and simultaneously reduces the haze of the tape. The absorption and energy conversion of ultraviolet light by the light stabilizer, as well as the scavenging and energy transfer of free radicals, delay the occurrence of photoaging and thus reduce haze. Antioxidants and light stabilizers can protect the polymer chains in the tape from attacks by free radicals and light. They can stabilize the polymer chains, prevent them from breaking and crosslinking, thereby maintaining the integrity and mechanical properties of the material.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automotive wiring harness tape, characterized in that: The wiring harness tape comprises a shielding layer and a rubber coating layer, wherein the shielding layer is made of the following raw materials in parts by weight: polyester fiber Components, nylon fiber Components, glass fiber Components, carbon fiber Conductive composite fiber Potassium titanate whiskers parts; the conductive composite fiber is a mass ratio Polyaniline fiber, polypyrrole fiber and polythiophene fiber are blended and spun with shielding factors, and their specific resistance is ; The shielding factor includes the mass ratio The coating layer is formed by distributing an antioxidant and a light stabilizer in silicone rubber and mixing them, and the mass ratio of the antioxidant, light stabilizer and silicone rubber is ; The antioxidant is a mass ratio diaryl secondary amine, thiodipropionate, salicylaldehyde oxime, the light stabilizer is a mass ratio of of phenyl o-hydroxybenzoate, formamide, 1,4-butanediol; The method for preparing the automotive wiring harness tape comprises the following steps: S1. Preparation of shielding layer: Put polyester fiber, nylon fiber, glass fiber and carbon fiber into a mixing device according to the proportion and stir evenly, then add conductive composite fiber and potassium titanate whisker into the mixed fiber, mix evenly again, form a uniform fiber mesh by knitting, weaving or melt-blowing, and then use a hot press at a temperature of , pressure is , time is Perform heat setting treatment and finally use the mold to make the required shielding layer shape and size; S2. Preparation of coating layer: Put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoating layer, and apply the electrocoating layer to one side of the shielding layer in an amount of , and then set the wavelength to Low pressure Irradiation under mercury lamp ,energy , forming a coating layer on the surface of the shielding layer, and placing it in a calender at a temperature of , the pressure is The pressing time is , so that it forms a continuous tape substrate; S3. Preparing a wiring harness tape: Cutting the tape substrate using a cutting machine to form a wiring harness tape.

2. The automotive wiring harness tape according to claim 1, wherein: The wiring harness tape includes a shielding layer and a rubber coating layer. The shielding layer is made of the following raw materials in parts by weight: 50 parts of polyester fiber, 45 parts of nylon fiber, 18 parts of glass fiber, 10 parts of carbon fiber, 30 parts of conductive composite fiber, and 17 parts of potassium titanate whiskers; the mass ratio of the antioxidant, light stabilizer, and silicone rubber is 20:10:

100.

3. The automotive wiring harness tape according to claim 1, wherein: The metal powder is selected from any one of copper powder, silver powder, nickel powder or aluminum powder.

4. The automotive wiring harness tape according to claim 1, wherein: The absorbing material is selected from any one of nickel-zinc-copper alloy, perovskite ferrite, iron arsenide, and carbon black.

5. The automotive wiring harness tape according to claim 1, wherein: The metal oxide is selected from any one of indium oxide, indium tin oxide, copper oxide and iron oxide.

6. The method for preparing an automotive wiring harness tape according to claim 1, wherein: The following steps are involved: S1. Preparation of shielding layer: Put polyester fiber, nylon fiber, glass fiber and carbon fiber into a mixing device according to the proportion and stir evenly, then add conductive composite fiber and potassium titanate whisker into the mixed fiber, mix evenly again, form a uniform fiber mesh by knitting, weaving or melt-blowing, and then use a hot press at a temperature of , pressure is , time is Perform heat setting treatment and finally use the mold to make the required shielding layer shape and size; S2. Preparation of coating layer: Put the above antioxidant, light stabilizer and silicone rubber into a mixer and mix them together, extrude and shape them to form an electrocoating layer, and apply the electrocoating layer to one side of the shielding layer in an amount of , and then set the wavelength to Low pressure Irradiation under mercury lamp ,energy , forming a coating layer on the surface of the shielding layer, and placing it in a calender at a temperature of , the pressure is The pressing time is , so that it forms a continuous tape substrate; S3. Preparing a wiring harness tape: Cutting the tape substrate using a cutting machine to form a wiring harness tape.

Images