PolyimideF46Adhesive Film Tape Also known as “HFHModel options include:FEP-A、FEP-BInsulation gradeH—CGrade. Based on polyimide film,Single or double-sided coated with PTFE (Polytetrafluoroethylene)F46The liquid is baked at high temperatures. It boasts excellent electrical insulation properties, mechanical properties, superior temperature and radiation resistance, as well as chemical stability and flame retardancy. Additionally, it features high oil and water resistance, and high-temperature self-adhesive sealing capabilities. It is suitable for flat-wound coil wires for submersible oil motors in deep wells, copper winding for cables, insulation layers for electromagnetic wires, and interlayer insulation for electrical motors.
Submersible electric pump and motor flat-wound coil, generally100~200mm2The flat copper bars are wound in cross-section; due to the larger wire gauge, the deformation force is also greater, hence it is necessary to use inter-coil insulating materials with high bonding strength base material to bond them into a single unit. When using insulating varnishes, the high viscosity and low solid content often require multiple dips to achieve the required insulation during the dipping process of the coil workpieces. Additionally, a large amount of high-boiling-point solvents must be evaporated, and the baking process is complex, which presents many difficulties for application. The high cost of the varnish base resin also makes the product economically non-competitive.
PolyimideF46Development of film substitutes for high-phenolic漆包线漆 and high-solvent immersion漆 insulating materials can significantly reduce the waste of organic solvents and minimize the severe environmental contamination. Applied to the insulation of flat copper wire and electromagnetic wire, the polyimide film is coated on one or both sides for thermal plastic applications.F46LotionTeflon FEPCan be used as a thermosetting adhesive; after drying, it normally forms a dry adhesive layer; then it is cut into strips and wrapped around copper conductors, followed by heating and roller pressing to make the polyimide filmF46The adhesive layer securely bonds the insulating material and copper conductors into a single unit.F46The adhesive layer protects the polyimide film from damage, whereas when using the polyimide film alone, the smooth surface lacks adhesion strength. During the dipping varnish process, due to solvent evaporation, an excessive number of bubbles within the adhesive layer reduce the adhesion strength and sealability, thereby affecting the insulating performance. PolyimideF46On the filmF46The adhesive layer can be heated using both high-frequency and oven heating.300℃ ~ 370℃ Line speed:2.1m/1minConditionally sintered-bonded, the motor's flat winding turns are insulated, firmly bonding the polyimide film with copper conductors and between different layers of the polyimide film, which provides the following advantages for the conductors:
PolyimideF46Adhesive Film Tape High: As perIEEE57Test method of document No., two strands wrapped in two layers0.075mmThick coatingF46Polyimide film made of plastic (with a fluoroplastic layer thickness of)0.025mmTwisted together with the electromagnetic wire, in264At a temperature of ℃, there is20000hThe lifespan, with a heat resistance up to264The temperature is merely too close to the melting point of the fluoroplastic layer, hence generally long-term (100000hUsed exclusively240℃。
1-2.High moisture resistance: Due to the even insulation layer and the seamless bonding into a single unit without needle holes, it will not short circuit in damp conditions and can be immersed in water.24hIt also boasts high insulation properties.
1-3High dielectric strength: Used0.075mmThick coatingF46Polyimide film made of plastic (with a fluoroplastic layer thickness of)0.025mm）52%Single-layer wound electromagnetic wire, with a breakdown voltage of6KvAbove, it not only improved the withstand pressure level between turns but also enhanced the withstand pressure level against the ground.
1-4High solvent and chemical resistance: This is inherent to polyimide film and fluoroplastic, and due to the excellent sealing of the insulation layer, the copper conductors do not come into contact with external substances. There is no damage to the insulation layer of the wire by solvents, as commonly seen in the dipping varnish process.
1-5Excellent molding properties: The excellent elongation properties of the polyimide film allow insulated wires to be bent into various shapes without cracking or damaging the insulation; there is no insulation cracking when bending (especially for the winding nose of armature coil conductors).
1-6Relatively low economic cost: Coated polyimideF46Tape and heat-sealing equipment for thin-film conductors, as well as equipment for enameling or glass-fiber insulated wires, dipping varnish equipment, and processes, offer lower costs compared to traditional methods. They shorten the production process, enabling continuous and automated production; achieving low pollution, conserving production space, and enhancing the quality of coils. The overall structure is beneficial for efficient heat dissipation from the inside to the outside. Use of polyimideF46After the film wire, the thickness of the ground insulation can be reduced; the copper cross-section in the slot is increased, significantly enhancing the motor's capacity and reliability, thereby extending the motor's service life.
PolyimideF46Adhesive film tape products, as a special composite insulating film, possess unique comprehensive properties and are widely used in the electrical, electronic, electric locomotive, various traction motor, submersible motor, nuclear power equipment, high-temperature-resistant wire and cable, special electrical appliances, fire-resistant busbars, aerospace, navigation, artificial satellites, rockets, atomic energy, traction motors, electromagnetic wire, smelting, mining, power generation sets, and various motors. They are also applicable in flexible circuit boards, instrument communication, petrochemical industries, and various departments of industry. They are an indispensable insulating material in the development of modern high-tech industries.
Technical Conditions:
1、 Appearance: The base material of this product is a foggy, semi-transparent, gold-colored film in roll form. The surface should be smooth and flat, free of conductive impurities. There should be no defects such as creases, tears, particles, bubbles, or pinholes. The adhesive surface should be even with no shedding. The edges should be cleanly cut with no mechanical damage.
2Performance Specifications: (Table)9-6）
PolyimideF46Adhesive Film Tape Parameters Parameter Name Unit Standard Value Standard Value Standard Value Thickness mm 0.05 ± 0.008 0.04 ± 0.005 0.06 ± 0.006 Substrate PI Film Thickness mm 0.025 0.025 0.050 Width mm 6.0 ± 0.56 — 500 15.0 ± 0.5 25.4 ± 0.5 Tensile Strength (Longitudinal, Lateral) N/10mm ≥ 42.0 ≥ 32.0 ≥ 54.0 Elongation at Break (%) ≥ 40 ≥ 40 ≥ 40 Breakdown Voltage KV ≥ 6 ≥ 5.4 ≥ 6.3 Adhesion to Substrate N/25mm ≥ 4.0 ≥ 4.0 ≥ 4.0 Adhesion to Copper ≥ 4.0 ≥ 4.0 ≥ 4.0 Volume Resistivity Ω·cm ≥ 1.0 × 10^15 ≥ 1.0 × 10^15 ≥ 1.0 × 10^15 Long-Term Heat Resistance ≥ 200 |
