High-voltage electric shock prevention shuttle woven coating fabric

Abstract

The utility model discloses a high-voltage electric shock prevention shuttle woven coating fabric which comprises a polyacrylonitrile pre-oxidized fiber fabric, a metal covering yarn fabric layer, a PVDF / CTFE copolymer film, a base cloth layer and a polyimide resin coating, wherein the polyacrylonitrile pre-oxidized fiber fabric, the metal covering yarn fabric layer, the PVDF / CTFE copolymer film and the base cloth layer are compounded through a flame-retardant adhesive; the polyacrylonitrile pre-oxidized fiber fabric is formed by interweaving first covering yarns, and the first covering yarns wrap PTFE split film filaments and polyacrylonitrile pre-oxidized fibers; the metal core-spun yarn fabric layer is formed by interweaving second core-spun yarns, and the second core-spun yarns comprise metal wires and PBO fibers; and the base cloth layer is formed by interweaving aramid 1313 fiber yarns. According to the woven coating fabric, the metal wires and the PVDF / CTFE copolymer film with high breakdown strength are used in the metal core-spun yarn fabric layer, so that the woven coating fabric has good anti-breakdown performance. And the polyacrylonitrile pre-oxidized fiber fabric can avoid the problems of combustion and the like caused by electric arc.

Description

Technical Field

[0001] The utility model relates to a woven coated fabric that is resistant to high-voltage electric shock, and belongs to the technical field of protective fabrics. Background Art

[0002] The principle of high-voltage breakdown refers to the phenomenon that the dielectric cannot block the passage of current under the action of high voltage. This phenomenon usually occurs in electrical equipment or power systems. When the voltage exceeds a certain threshold, the electric field strength reaches a critical value, and the atoms or molecules inside the dielectric are ionized by the electric field force, forming electrons, ions and free charges. These free charges cause the flow of current and cause dielectric breakdown. The principle of high-voltage breakdown can be explained by Pasard's law. According to Pasard's law, the relationship between voltage and electric field strength is E=V / d, where E is the electric field strength, V is the voltage, and d is the thickness of the dielectric. When the electric field strength exceeds the breakdown strength of the dielectric, the atoms or molecules inside the dielectric will be ionized to form a conductive flux, allowing the current to flow freely. The threshold of high-voltage breakdown is closely related to the nature of the electrical repair, and different dielectrics have different breakdown strengths. High-voltage breakdown will not only produce catastrophic effects such as sparks and arcs, but also cause damage and failure of equipment.

[0003] In the working environment of power workers, they often encounter high-voltage electric fields and electromagnetic waves. In order to effectively protect the human body from the influence of high-voltage electric fields and electromagnetic waves and avoid the breakdown of the fabric due to the presence of high-voltage electric fields, it is a problem to be solved to prepare a woven fabric that is resistant to high-voltage electric breakdown. Utility Model Content

[0004] The utility model aims to provide a high-voltage electric breakdown resistant shuttle-woven coated fabric, which has high breakdown strength and is combined with a metal core-spun yarn fabric to have good high-voltage electric breakdown resistance.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0006] The utility model relates to a high-voltage electric shock-proof shuttle-woven coated fabric, comprising a polyacrylonitrile preoxidized fiber fabric, a metal core-spun yarn fabric layer, a PVDF / CTFE copolymer film and a base fabric layer compounded by a flame-retardant adhesive;

[0007] A polyimide resin coating is provided on one side of the base fabric layer away from the PVDF / CTFE copolymer film;

[0008] The polyacrylonitrile preoxidized fiber fabric is formed by interweaving the first core-spun yarn as the warp and weft yarns, the first core-spun yarn includes a first core yarn and a first covering fiber layer, the first core yarn is a PTFE split film filament, and the first covering fiber layer is a polyacrylonitrile preoxidized fiber;

[0009] The metal core-spun yarn fabric layer is formed by interweaving the second core-spun yarn as the warp and weft yarns, the second core-spun yarn includes a second core yarn and a second covering fiber layer, the first core yarn is a metal wire, and the second covering fiber layer is a PBO fiber;

[0010] The base fabric layer is formed by interweaving aramid 1313 fiber yarns.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the metal wire is a steel wire with a diameter of 0.5 mm.

[0012] On the basis of the above solution and as a preferred solution of the above solution: a nano titanium dioxide coating is provided on the side of the polyacrylonitrile preoxidized fiber fabric away from the metal core-spun yarn fabric layer.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: a planar three-dimensional fabric is arranged between the PVDF / CTFE copolymer film and the base fabric layer.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: the planar three-way fabric is woven from ultra-high molecular polyethylene filaments.

[0015] The utility model has the following beneficial effects: the utility model relates to a high voltage electric breakdown resistant woven coated fabric, which uses metal wire in the metal core-spun yarn fabric layer and a PVDF / CTFE copolymer film with a high breakdown strength, so that the woven coated fabric has good breakdown resistance. And the polyacrylonitrile pre-oxidized fiber fabric used can avoid problems such as burning caused by electric arcs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic diagram of the structure of the woven coated fabric for preventing high voltage electric shock from penetrating according to the first embodiment;

[0017] Figure 2 It is a schematic structural diagram of the high-voltage electric shock resistant woven coated fabric involved in the second embodiment.

[0018] The markings in the figure are as follows: 1-polyacrylonitrile pre-oxidized fiber fabric; 2-metal core-spun yarn fabric layer; 3-PVDF / CTFE copolymer film; 4-base fabric layer; 5-polyimide resin coating; 6-nano titanium dioxide coating; 7-plane three-dimensional object. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Embodiment 1

[0021] Combination Figure 1, this embodiment is described in detail. The present embodiment involves a high-voltage electric shock-proof woven coated fabric, comprising a polyacrylonitrile pre-oxidized fiber fabric 1, a metal core-spun yarn fabric layer 2, a PVDF / CTFE copolymer film 3 and a base fabric layer 4 compounded by a flame-retardant adhesive. A polyimide resin coating 5 is provided on the side of the base fabric layer 4 away from the PVDF / CTFE copolymer film 3; the thickness of the PVDF / CTFE copolymer film 3 is 5 microns, and the thickness of the polyimide resin coating 5 is 0.5 mm.

[0022] The polyacrylonitrile preoxidized fiber fabric 1 is interwoven with the first core-spun yarn as the warp and weft yarns, the first core-spun yarn includes a first core yarn and a first coating fiber layer, the first core yarn is a PTFE split film filament, and the first coating fiber layer is a polyacrylonitrile preoxidized fiber. High voltage breakdown will not only produce catastrophic effects such as sparks and arcs, but also requires the fabric to have a good flame retardant effect. Polyacrylonitrile oxidized fiber, OPAN, referred to as oxidized fiber, is made from polyacrylonitrile precursor fiber. Oxidized polyacrylonitrile fiber has a limiting oxygen index between 40-60, excellent flame and thermal dimensional stability, and is easy to process into yarn, woven fabrics, knitted fabrics and non-woven fabrics, suitable for soft and comfortable felt and fabrics, non-conductive and with excellent chemical resistance, and halogen-free when exposed to flames, with extremely low toxic gas emissions. Polyacrylonitrile preoxidized fiber can improve good flame retardant effects.

[0023] The metal core-spun yarn fabric layer 2 is formed by interweaving the second core-spun yarn as the warp and weft yarns, the second core-spun yarn includes a second core yarn and a second covering fiber layer, the first core yarn is a metal wire, and the second covering fiber layer is a PBO fiber. The thickness of the PVDF / CTFE copolymer film 3 is 5 microns, and its breakdown field strength can reach 1GV / m, which has a high breakdown field strength, thereby avoiding high-voltage electrical breakdown. The metal core-spun yarn fabric layer 2 and the PVDF / CTFE copolymer film 3 can provide good anti-breakdown performance.

[0024] The base fabric layer 4 is interwoven with aramid 1313 fiber yarns. The aramid 1313 fiber yarns have good insulation properties and can enhance the breakdown field strength of the woven coated fabric.

[0025] Furthermore, the metal wire is a steel wire with a diameter of 0.5 mm, which can provide a good anti-cutting effect.

[0026] Embodiment 2

[0027] Combination Figure 2, this embodiment is described in detail. This embodiment involves a high voltage electric shock resistant woven coated fabric, wherein the polyacrylonitrile preoxidized fiber fabric 1 is provided with a nano titanium dioxide coating 6 on the side away from the metal core-spun yarn fabric layer 2. The nano ions and interface zone effects introduce deep traps, thereby having a good dielectric breakdown field strength.

[0028] Furthermore, a planar triaxial fabric 7 is provided between the PVDF / CTFE copolymer film 3 and the base fabric layer 4. The planar triaxial fabric can provide good tear resistance.

[0029] Furthermore, the planar three-way fabric is woven from ultra-high molecular polyethylene filaments.

[0030] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A woven coated fabric that is resistant to high voltage electric shock, characterized in that: It comprises a polyacrylonitrile preoxidized fiber fabric (1) compounded by a flame retardant adhesive, a metal core-spun yarn fabric layer (2), a PVDF / CTFE copolymer film (3) and a base fabric layer (4); A polyimide resin coating (5) is provided on the side of the base fabric layer (4) away from the PVDF / CTFE copolymer film (3); The polyacrylonitrile preoxidized fiber fabric (1) is formed by interweaving a first core-spun yarn as warp and weft yarns, wherein the first core-spun yarn comprises a first core yarn and a first covering fiber layer, the first core yarn is a PTFE split film filament, and the first covering fiber layer is a polyacrylonitrile preoxidized fiber; The metal core-spun yarn fabric layer (2) is formed by interweaving the second core-spun yarn as the warp and weft yarns, the second core-spun yarn comprises a second core yarn and a second covering fiber layer, the first core yarn is a metal wire, and the second covering fiber layer is a PBO fiber; The base fabric layer (4) is formed by interweaving aramid 1313 fiber yarns.

2. The high voltage electric shock resistant woven coated fabric according to claim 1, characterized in that: The metal wire is a steel wire with a diameter of 0.5 mm.

3. The high voltage electric shock resistant woven coated fabric according to claim 1, characterized in that: A nano titanium dioxide coating (6) is provided on the side of the polyacrylonitrile preoxidized fiber fabric (1) away from the metal core-covered yarn fabric layer (2).

4. The high voltage electric shock resistant woven coated fabric according to claim 1, characterized in that: A planar three-dimensional fabric (7) is arranged between the PVDF / CTFE copolymer film (3) and the base fabric layer (4).

5. The high voltage electric shock resistant woven coated fabric according to claim 4, characterized in that: The planar three-way fabric is woven from ultra-high molecular polyethylene filaments.

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