What are the mainstream application scenarios of F46 polyimide film
First, we would like to reiterate the core characteristics: high temperature resistance and high insulation of PI substrate; Surface F46 (FEP) has the core advantages of hot melt self-adhesion, moisture and oil resistance, chemical corrosion resistance, and no need for glue. It can be self-adhesive and sealed by high temperature hot pressing, which cannot be replaced by ordinary pure PI film.
First, we would like to reiterate the core characteristics: high temperature resistance and high insulation of PI substrate; Surface F46 (FEP) has the core advantages of hot melt self-adhesion, moisture and oil resistance, chemical corrosion resistance, and no need for glue. It can be self-adhesive and sealed by high temperature hot pressing, which cannot be replaced by ordinary pure PI film.
1、 Motor industry
1. Submersible motor, downhole pumping unit motor
Used for electromagnetic wire winding insulation and coil interturn insulation in oil and gas well environments with high temperature, high oil pressure, and immersion in crude oil.
Oil resistant, moisture-proof, preventing oil, gas, and water vapor infiltration, and avoiding PI film hydrolysis and aging, are standard insulation materials for oilfield motors.
2. Submersible motors and underwater special motors
Long term immersion underwater, relying on F46 fluorine layer to block water vapor and prevent insulation layer from being damaged by moisture.
3. Wind power traction motor, rail transit traction motor
High power variable frequency motor, resistant to high-frequency pulse voltage and high temperature, with coil insulation and phase to phase insulation.
4. Servo motors and special explosion-proof motors
A narrow and enclosed chamber, with an increase in working temperature, is wrapped in multiple layers and then thermally bonded to form a complete insulation structure.
2、 Special cables, aerospace wiring harnesses
1. Aerospace high-temperature cables, satellite wiring harnesses
Wide temperature range (-80~260 ℃), resistant to space radiation, low gas emission, conductor wrapped insulation;
FHF double-sided film multi-layer wrapping hot pressure seal, isolating moisture and atomic oxygen.
2. New energy special high-temperature cables and temperature compensation wires
Insulation and sheath substrate for industrial high-temperature equipment and metallurgical furnace temperature measurement cables.
3. Insulation of aviation motor coils and spacecraft drive motors
3、 Transformers, reactors, and inductive components
1. High frequency special transformers, high temperature resistant reactors, military inductors
The insulation between coil layers, winding wrapping, and thermal compression molding result in strong overall insulation, moisture resistance, and resistance to partial discharge.
Ordinary pure PI film is prone to moisture absorption under high humidity conditions, while PI/F46 composite film has significant advantages.
4、 Heating element, electric heating device
1. Flexible polyimide heating film (PI heating sheet)
Composite F46 polyimide film on the upper and lower parts of the heating circuit, integrated with hot pressing packaging;
Advantages: Strong adhesion, stable insulation, high temperature resistance, widely used for equipment defrosting and instrument constant temperature heating.
2. Insulation packaging for PTC heating elements and high-temperature sensor probes
5、 Lithium batteries, new energy storage
1. High temperature wire harness insulation for power batteries, insulation gaskets for battery cell terminals, and insulation isolation for energy storage modules;
2. High temperature resistant insulation lining inside the high-power energy storage inverter.
Attention: Ordinary consumer batteries often use ordinary PI; F46 composite films are mostly used for energy storage and power battery high-temperature conditions.
6、 Military industry, instrumentation, semiconductor equipment
1. High temperature probes and internal insulation isolation gaskets for vacuum equipment;
2. Temperature resistant and low precipitation insulation components inside semiconductor equipment and vacuum chambers;
3. Insulation coating for various military special electrical components.
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