Application of PEEK cables in aerospace military industry

Application of PEEK cables in aerospace military industry

1. PEEK (polyether ether ketone) cable introduction

The outstanding high and low temperature resistance, flame retardancy, radiation resistance and good mechanical properties of PEEK insulated wires make it suitable for ultra-high temperature wires in the aviation industry; it can be used as submersible pump motor winding wires and connecting wires in the petroleum industry, In nuclear power stations, it can be used as the winding coil of the nuclear island drive mechanism for a long time under irradiation conditions; the excellent properties of PEEK insulated wires such as seawater resistance, light weight, small size, and flame retardancy make it suitable for use in ships. Use; used in high-speed traction locomotives.

1. Halogen-free performance

The PEEK material molecules do not contain halogen atoms, and the material does not produce acidic and toxic gases after burning. It complies with EU RoSH and other environmental protection requirements, and is an environmentally friendly material.

2. Volume resistance

In a wide temperature range, ordinary PEEK polymers can still maintain a high volume resistivity value. At 23°C, the volume resistivity of PEEK is above 6 × 1013 Ωm, and at 140°C, its volume resistivity is 8 × 1012 Ωm Above, and the temperature is 200 ℃, its volume resistivity is above 6 × 109 Ωm, still has excellent insulation performance.

3. Surface resistance

PEEK has a surface resistivity of 2.0 × 1016 Ω at 25°C and 50% humidity, which is superior to fluoroplastics, polyamides, polyimides and other plastics.

4. Dielectric constant and dielectric loss factor

The dielectric constant of PEEK5600G is only 3.2, slightly higher than polyethylene (PE) and fluoroplastics, but much lower than polyvinyl chloride (PVC). Common PEEK polymers have good electrical properties in the frequency range of 109 Hz. Many of the material's electrical properties are in line with those typical of thermoplastic materials, while the PEEK polymer maintains these excellent insulating properties over a wide range of temperatures and frequencies. PEEK material has a smaller tan δ loss below 140°C. PPS is polyphenylene sulfide, PES is polyethersulfone, PC is polycarbonate, and PSU is bisphenol A polysulfone.

5. Heat resistance

PEEK polymer has a glass transition temperature of 143°C. Since it is a semi-crystalline thermoplastic material, it can still maintain excellent mechanical properties near the melting point of 343°C. Fatigue resistance and creep resistance are the highest among thermoplastics.

6. Flame retardancy

PEEK is self-extinguishing, without adding flame retardants, it can reach 94V-1 (0.3 mm in thickness), 94V-0 (1.5 mm in thickness) and 94V-5 (3.2 mm in thickness) by UL standard. mm). In addition, the amount of smoke generated during combustion is also very small.

7. Environmental resistance

PEEK is only soluble in concentrated sulfuric acid and has good chemical resistance, especially in terms of acid and alkali resistance at high temperatures, which is much better than polyimide. At the same time, the water absorption of PEEK is very small, and the saturated water absorption at 23°C is only 0.5%. Moreover, it has good hot water resistance and can be used in pressurized hot water or steam at 300°C.

8. Radiation resistance

The ability of resistance to gamma radiation is very strong, surpassing that of polystyrene with good radiation resistance among general-purpose resins. It can be made into a wire that can still maintain good insulation performance when the gamma irradiation dose reaches 850KGy.


2. PEEK cable specifications

Outer diameter 3mm Inner diameter 2.5 Outer diameter 3mm Inner diameter 2.6 Outer diameter 3mm Inner diameter 2mm (non-standard customization available)

The PEEK cable and wire extrusion production equipment introduced by the company can extrude PEEK cables of various specifications according to customer needs. Welcome to consult and buy!

3. Process capability

1. Applicable conductor: single core, integrated core wire, braided core wire, and sheathed wire can also be produced;

2. Applicable conductor wire diameter: 0.50mm²～6.0mm² copper wire or core wire sheath extrusion, coating thickness: 0.05～0.30mm;

3. Coating material: PEEK polyetheretherketone material, extrusion capacity of main machine: 28KG/H (approximately);

4. Outer diameter after coating: 0.75mm～Φ5.0mm (outer diameter of sheath MAX: Φ6.0mm);

5. Flat electromagnetic wire (reserved function): 3.30mm*11.40mm (within 2.0mm*12.0mm), coating thickness: 0.20～0.70mm;