Energy automobile is with the wrapping wire bundle mica composite adhesive tape

Abstract

The utility model relates to the technical field of adhesive tape discloses a kind of mica composite adhesive tape for energy automobile, including composite adhesive tape body;Composite adhesive tape body includes tenacity reinforcing layer, and the bottom end surface of tenacity reinforcing layer is bonded with flexible glue layer, and release paper is bonded on the end surface of flexible glue layer far from tenacity reinforcing layer, and the end surface of tenacity reinforcing layer far from flexible glue layer is bonded with mica base layer, and the end surface of mica base layer far from tenacity reinforcing layer is bonded with elastic layer, and the end surface of elastic layer far from mica base layer is fixed with outer protective layer.The mica composite adhesive tape for energy automobile, by the cooperation of flexible glue layer, tenacity reinforcing layer, bonding glue layer, mica base layer, elastic layer and outer protective layer, form multilayer composite structure design, that is, through bonding buffer-enhancing support-insulation protection-wear-resistant sealing, multilayer functional composite structure, successfully solve the problem of low mechanical strength and poor flexibility of traditional mica tape.

Description

Technical Field

[0001] This utility model relates to the field of tape technology, and in particular to a mica composite tape for wrapping wire harnesses in new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, extremely stringent requirements have been placed on the insulation reliability, temperature resistance, and durability of high-voltage wiring harnesses. As a core component for energy transmission, high-voltage wiring harnesses operate under complex conditions such as high temperature, vibration, and chemical media for extended periods. Their insulation integrity directly affects the safety and reliability of the entire vehicle.

[0003] Currently, using mica tape wrapping is a common process for achieving high-temperature insulation of high-voltage wire harnesses. Traditional mica tape is made of hard and brittle mica material. When small-radius bending is required during wire harness production or installation, the mica sheets are prone to breakage, detachment, or even pulverization, leading to local defects in the insulation layer and a decrease in dielectric strength. Secondly, pure mica paper has extremely low mechanical strength and lacks tensile, shear, and puncture resistance. When passing through metal holes, contacting sharp screw angles, or being scraped by installation tools, it is easily scratched or even punctured, forming hard-to-detect weak points in the insulation and posing a potential risk of breakdown. Utility Model Content

[0004] Given that the existing mica tape is relatively brittle and prone to breakage and pulverization under repeated vibration or small-radius bending, resulting in a decrease in insulation performance, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a mica composite tape for wrapping wire harnesses in new energy vehicles, which has the following purpose: to provide a mica composite tape with both excellent flexibility and high mechanical strength.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a mica composite tape for wrapping wire harnesses in new energy vehicles, comprising a composite tape body, wherein the adhesive surface of the composite tape body is provided with release paper, and a plurality of easy-tear lines are provided at equal intervals on the end face of the composite tape body away from the release paper. The composite tape body includes a toughness-enhancing layer, a flexible adhesive layer is bonded to the bottom surface of the toughness-enhancing layer, and a release paper is bonded to the end surface of the flexible adhesive layer away from the toughness-enhancing layer. A mica base layer is bonded to the end surface of the toughness-enhancing layer away from the flexible adhesive layer, an elastic layer is bonded to the end surface of the mica base layer away from the toughness-enhancing layer, and an outer protective layer is fixed to the end surface of the elastic layer away from the mica base layer.

[0007] As an improved technical solution, the toughness-enhancing layer is bonded and fixed to the mica base layer and the mica base layer and the elastic layer by an adhesive layer, and both the flexible adhesive layer and the adhesive layer are silicone pressure-sensitive adhesives.

[0008] As an improved technical solution, the toughness-enhancing layer includes a high-strength layer, and a flexible layer is fixed to one end of the high-strength layer near the flexible adhesive layer. The high-strength layer is glass fiber cloth, and the flexible layer is a polyimide film.

[0009] As an improved technical solution, the mica base layer includes a flame-retardant layer, and a mica tape layer is fixed to one end face of the flame-retardant layer near the toughness-enhancing layer. The flame-retardant layer is made of silicone resin.

[0010] As an improved technical solution, the outer protective layer includes a corrosion-resistant layer, and a wear-resistant layer is provided on the end face of the corrosion-resistant layer away from the elastic layer. The corrosion-resistant layer is polytetrafluoroethylene propylene, and the wear-resistant layer is a high-temperature resistant polyester film.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are: This invention utilizes a combination of a flexible adhesive layer, a toughening reinforcement layer, an adhesive layer, a mica base layer, an elastic layer, and an outer protective layer to form a multi-layer composite structure design. Through adhesive buffering, reinforcement support, insulation protection, and wear-resistant sealing, this multi-layer functional composite structure successfully solves the problems of low mechanical strength and poor flexibility of traditional mica tape, providing a highly reliable insulation protection solution for high-voltage wiring harnesses in new energy vehicles. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a partial structural schematic diagram of a mica composite tape for wrapping wire harnesses in new energy vehicles according to this utility model.

[0013] Figure 2 This is a schematic diagram of a partial explosion of a mica composite tape for wrapping wire harnesses for new energy vehicles according to this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Composite tape body; 2. Release paper; 3. Easy-tear line; 4. Flexible adhesive layer; 5. Toughness-enhancing layer; 51. High-strength layer; 52. Flexible layer; 6. Adhesive layer; 7. Mica base layer; 71. Flame-retardant layer; 72. Mica tape layer; 8. Elastic layer; 9. Outer protective layer; 91. Corrosion-resistant layer; 92. Wear-resistant layer. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Example 1 Reference Figures 1-2 This is the first embodiment of the present invention, which provides a mica composite tape for wrapping wire harnesses in new energy vehicles. This mica composite tape for wrapping wire harnesses in new energy vehicles includes a composite tape body 1. The adhesive surface of the composite tape body 1 is provided with release paper 2. The release paper 2 plays a protective role for the flexible adhesive layer 4, preventing the flexible adhesive layer 4 from being contaminated and reducing its viscosity. The end face of the composite tape body 1 away from the release paper 2 is provided with multiple easy-tear lines 3 at equal intervals. The setting of easy-tear lines 3 makes it easier for users to quickly cut the tape without auxiliary tools. The composite tape body 1 includes a toughness-enhancing layer 5, a flexible adhesive layer 4 is bonded to the bottom end face of the toughness-enhancing layer 5, and a release paper 2 is bonded to the end face of the flexible adhesive layer 4 away from the toughness-enhancing layer 5. A mica base layer 7 is bonded to the end face of the toughness-enhancing layer 5 away from the flexible adhesive layer 4. An elastic layer 8 is bonded to the end face of the mica base layer 7 away from the toughness-enhancing layer 5. An outer protective layer 9 is fixed to the end face of the elastic layer 8 away from the mica base layer 7.

[0017] By combining the flexible adhesive layer 4, the toughness-enhancing layer 5, the adhesive layer 6, the mica base layer 7, the elastic layer 8, and the outer sheath 9, a multi-layer composite structure design is formed. This multi-layer functional composite structure, which combines adhesive buffering, enhanced support, insulation protection, and wear-resistant sealing, successfully solves the problems of low mechanical strength and poor flexibility of traditional mica tape, providing a highly reliable insulation protection solution for high-voltage wiring harnesses in new energy vehicles.

[0018] The toughness-enhancing layer 5 is bonded and fixed to the mica base layer 7, and the mica base layer 7 is bonded and fixed to the elastic layer 8 by the adhesive layer 6. Both the flexible adhesive layer 4 and the adhesive layer 6 are silicone pressure-sensitive adhesives. The flexible adhesive layer 4 and the adhesive layer 6 have excellent high and low temperature resistance from -50℃ to above 200℃, better performance, better compatibility with mica, and provide initial adhesion, so that the tape can be tightly wrapped around the conductor of the wire harness and effectively fill the tiny gaps on the surface of the conductor to form a gapless insulating whole. At the same time, the adhesive layer has a certain degree of elasticity and flexibility, which can act as a buffer layer to absorb and disperse some of the vibration stress from the wire harness and reduce the mechanical impact directly transmitted to the mica layer.

[0019] The toughness-enhancing layer 5 includes a high-strength layer 51. A flexible layer 52 is fixed to one end of the high-strength layer 51 near the flexible adhesive layer 4. The high-strength layer 51 is made of fiberglass cloth, and the flexible layer 52 is made of polyimide film. The combination of the high-strength layer 51 and the flexible layer 52 provides extremely high mechanical strength, tear resistance, flexibility, and excellent heat resistance. As the "skeleton" of the entire tape, it bears most of the tensile, bending, and shear stress, greatly improving the overall tensile strength and puncture resistance of the tape. It is not easily scratched or punctured by sharp metal corners or screws during production and installation.

[0020] The mica base layer 7 includes a flame retardant layer 71. A mica tape layer 72 is fixed to one end of the flame retardant layer 71 near the toughness reinforcement layer 5. The flame retardant layer 71 is made of silicone resin. The flame retardant layer 71 completely seals and wraps the mica tape layer 72 to prevent it from absorbing moisture and turning into powder, and to block the corrosion of chemicals such as oil and electrolyte, and to provide a certain flame retardant effect.

[0021] The outer sheath 9 includes a corrosion-resistant layer 91. The end face of the corrosion-resistant layer 91 away from the elastic layer 8 is provided with a wear-resistant layer 92. The corrosion-resistant layer 91 is made of polytetrafluoroethylene propylene. The corrosion-resistant layer 91 provides excellent resistance to ultraviolet rays, ozone, and aging, making it suitable for harsh environments. At the same time, it is also an excellent insulating material, forming the outermost insulation barrier. The wear-resistant layer 92 is a high-temperature resistant polyester film. The wear-resistant layer 92 directly resists external friction, scratches, impacts, and chemical corrosion, protecting the fragile internal mica tape layer 72 from damage, and isolating moisture, dust, and other contaminants to maintain the long-term stability of insulation performance.

[0022] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mica composite tape for wrapping wire harnesses in new energy vehicles, characterized in that: The composite tape body (1) is provided with release paper (2) on the adhesive surface of the composite tape body (1), and a plurality of easy-tear lines (3) are provided at equal intervals on the end face of the composite tape body (1) away from the release paper (2). The composite tape body (1) includes a toughness-enhancing layer (5), a flexible adhesive layer (4) is bonded to the bottom end face of the toughness-enhancing layer (5), and a release paper (2) is bonded to the end face of the flexible adhesive layer (4) away from the toughness-enhancing layer (5). A mica base layer (7) is bonded to the end face of the toughness-enhancing layer (5) away from the flexible adhesive layer (4), an elastic layer (8) is bonded to the end face of the mica base layer (7) away from the toughness-enhancing layer (5), and an outer protective layer (9) is fixed to the end face of the elastic layer (8) away from the mica base layer (7).

2. The mica composite tape for wrapping wire harnesses in new energy vehicles according to claim 1, characterized in that: The toughness enhancement layer (5) and the mica base layer (7) and the mica base layer (7) and the elastic layer (8) are all bonded and fixed by adhesive layer (6), and the flexible adhesive layer (4) and the adhesive layer (6) are both silicone pressure-sensitive adhesives.

3. The mica composite tape for wrapping wire harnesses in new energy vehicles according to claim 2, characterized in that: The toughness-enhancing layer (5) includes a high-strength layer (51), and a flexible layer (52) is fixed to one end of the high-strength layer (51) near the flexible adhesive layer (4). The high-strength layer (51) is glass fiber cloth, and the flexible layer (52) is a polyimide film.

4. The mica composite tape for wrapping wire harnesses in new energy vehicles according to claim 3, characterized in that: The mica base layer (7) includes a flame retardant layer (71), and a mica tape layer (72) is fixed on one end face of the flame retardant layer (71) near the toughness reinforcement layer (5). The flame retardant layer (71) is made of silicone resin.

5. The mica composite tape for wrapping wire harnesses in new energy vehicles according to claim 4, characterized in that: The outer protective layer (9) includes a corrosion-resistant layer (91), and a wear-resistant layer (92) is provided on one end face of the corrosion-resistant layer (91) away from the elastic layer (8). The corrosion-resistant layer (91) is polytetrafluoroethylene propylene, and the wear-resistant layer (92) is a high-temperature resistant polyester film.

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