What is Teflon (FEP, PFA, ETFE)? What are the characteristics and applications of Teflon high temperature wires?

Teflon wire, commonly known as fluorine plastic wire, also known as high temperature wire, refers to a wire made of fluorine plastic for the insulation layer of the wire, which has the special performance of high temperature resistance.

Teflon

Teflon is another name for polytetrafluoroethylene, the English abbreviation is PTFE, (commonly known as "Plastic King, Hara"), and the chemical formula is -(CF2-CF2)n-.
Products of this material are generally collectively referred to as "non-stick coatings";
It is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is very low, so it can be used as a way of lubrication, and it has become an ideal coating for non-stick pots and water pipes.

Teflon wire performance

Has excellent corrosion resistance, almost insoluble in any organic solvents, resistant to oil, strong acids, strong alkalis, strong oxidants, etc.; It has excellent electrical insulation performance, high voltage resistance, low high frequency loss, no moisture absorption, and large insulation resistance; It has excellent flame resistance, aging resistance and long service life.

Introduction to the characteristics of Teflon

1. Non-sticky: Almost all substances are not bonded to the PTFE film. Very thin films also show good non-stick properties.
2. Heat resistance: PTFE coating film has excellent heat resistance and low temperature resistance. It can withstand high temperature to 300°C in a short time, and it can be used continuously between 240°C and 260°C. It has remarkable thermal stability, it can work at freezing temperature without embrittlement, and does not melt at high temperature.
3. Sliding property: PTFE coating film has a low friction coefficient. The friction coefficient changes when the load is sliding, but the value is only between 0.05-0.15.
4. Moisture resistance: The surface of the PTFE coating film is free from water and oil, and it is not easy to be stained with solution during production operations. If there is a small amount of dirt, simply wipe it off. Short downtime, saving working hours and improving work efficiency.
5. Wear resistance: Under high load, it has excellent wear resistance. Under a certain load, it has the dual advantages of wear resistance and non-sticking.
6. Corrosion resistance: PTFE is hardly corroded by chemicals and can withstand the addition of molten alkali metals. The role of fluorinated medium and all strong acids, strong oxidants, reducing agents and various organic solvents except sodium hydroxide above 300℃ can protect parts from any kind of chemical corrosion.

Physical properties

Relative density: 2.14~2.2
Water absorption (23℃, 24h)% <0.01
Tensile strength MPa: 22~35
Elongation%: 200~400
Tensile modulus of elasticity MPa: 400
Flexural modulus of elasticity MPa: 420
Compression modulus of elasticity MPa: 500
Notched impact strength J/m: 163
Heat distortion temperature ℃: 0.45MPa 121, 1.82MPa 55
Coefficient of linear expansion 10-5/℃: 10
Flame retardancy (UL94): V-0
Volume resistivity Ω.cm: 1017~1018
Dielectric constant: <2.1
Dielectric loss tangent: <2×10-4
Dielectric strength KV/mm: >17
Arc resistance s: >300

Application of Teflon wire

Widely used in the electronics industry: It can be used for temperature compensation wire, low temperature resistant wire, high temperature heating wire, aging resistant wire and flame retardant wire;
In the household appliance industry: It can be used for internal wiring of air conditioners, microwave ovens, electronic disinfection cabinets, rice cookers, electronic hot water bottles, electric heaters, electric ovens, electric frying pans, lamps and lanterns, etc.

Teflon wire parameters

Product model: AF200X
Executive standard: Q/IRMV1－2008
Product Features:
1. Rated voltage: 600V
2. Working temperature: -65～+200℃
3. Conductor: solid core or stranded tinned copper wire
4. Insulation: FEP Teflon
5. Color: red/yellow/blue/white/black/yellow-green/brown, etc.

Specification structure

Nominal cross section （mm）	Conductor structure Number of wires/wire diameter (mm)	Insulation thickness （mm）	Average outer diameter （mm）	DC resistance of conductor at 20 ℃ （Ω/km）	Package length （m）
0.014	7/0.05	0.15	0.45	1454	500
0.035	7/0.08	0.15	0.60	568	500
0.05	7/0.10	0.15	0.60	356	500
0.08	7/0.12	0.20	0.78	245	500
0.12	7/0.15	0.25	0.95	163	500
0.20	7/0.20	0.25	1.10	90.4	500
0.35	19/0.16	0.25	1.30	53.1	200
0.50	19/0.18	0.25	1.40	40.1	200
0.75	19/0.23	0.25	1.70	24.6	200
1.0	19/0.26	0.25	1.80	20.4	200
1.20	19/0.28	0.30	2.0	16.6	200
1.50	19/0.32	0.30	2.25	12.7	200
2.0	19/0.37	0.30	2.45	10.0	100
2.5	19/0.41	0.40	2.80	7.43	100
4.0	37/0.37	0.40	3.40	4.88	100
6.0	37/0.45	0.50	4.20	3.30	100
8.0	133/0.28	0.5	5.2	2.30	100
10	133/0.32	0.5	5.8	1.82	100
16	133/0.39	0.6	7.0	1.22	100
20	133/0.45	0.6	8.0	0.919	100
25	196/0.40	0.6	8.8	0.795	100
35	494/0.30	0.7	10.4	0.565	100
50	396/0.40	0.8	12.2	0.393	100
70	551/0.40	1.0	14.6	0.277	100
95	760/0.40	1.2	17.2	0.210	100
0.03	1/0.20	0.15	0.50	560	500
0.05	1/0.25	0.18	0.60	386.9	500
0.07	1/0.30	0.2	0.70	245	500
0.12	1/0.40	0.20	0.80	146.9	500
0.20	1/0.50	0.25	1.0	94	500
0.3	1/0.60	0.25	1.10	65.3	200
0.5	1/0.80	0.30	1.40	36.7	200
0.75	1/0.97	0.25	1.48	24.7	200
0.78	1/1.0	0.30	1.60	24.7	200
1	1/1.13	0.30	1.70	18.2	200
1.13	1/1.20	0.30	1.80	16.5	200
2.5	1/1.78	0.40	2.60	7.56	100