What are the differences between PVC wire and silicone wire?

2021-11-27
What are the differences between PVC wire and silicone wire?

Silicone wire has excellent high temperature and low temperature resistance and long service life. PVC wire consists of single or multiple conductive copper wires. Let's take a look at the difference between PVC wire and silicone wire?

1、 Electrical performance: solicone wire has high voltage resistance, generally above 2KV. The thickness of silicone wire can reach tens of thousands of volts, and PVC wire is generally only hundreds of volts. The current performance is the same, which is generally determined by the internal conductor.

2、 Physical properties: in terms of softness, silicone wire is relatively soft, but PVC has only some relatively soft wire. The softness of silicone wire is ductile. At low temperature, PVC wire is softer than silicone wire.

3、 In terms of temperature resistance, silicone wire can exceed 200 degrees, but PVC wire can only withstand 70-100 degrees.

4、 Silicone wire will have a certain odor, while PVC wire does not.

5、 There is a slip toner on the outer skin of the silicone line, which is the process and technical requirements of the silicone wire. It may not be cleaned. The PVC has a smooth appearance and there is no slip toner.

Generally, the temperature resistance range of PVC wire is - 15 ℃ ~ 80 ℃, while silicone wire can reach the temperature range of - 60 ℃ - 200 ℃. The service life of PVC wire is short, generally about two years, and the flexibility is poor. It is weak in aging resistance and easy to crack in sunlight. It is suitable for use in indoor lamps and household appliances. PVC wire itself is hard. Smooth surface and high brightness correction: the cost of V of the same specification is much lower than that of silicone wire, and the compressive strength is also lower than that of silicone wire. The bending recovery ability of PVC line is poor. Once it is bent and folded, it is difficult to restore its original appearance. The silicone wire also has shortcomings, such as poor tear resistance of the sheath and high manufacturing cost.
PVC wire


What are the harmful effects of the thickness of silicone wire sheath on the use of wires and cables:

(1) Cable structure problems

Such as conductor, insulation and braid density. It shall be controlled according to the standard requirements, and the appropriate filler shall be selected to make it round.

(2) Material property defect

Material properties are not reflected by thickness, but according to standard requirements. If a certain index fails to meet the standard, it will directly affect the quality of silica gel wire and cable.

(3) Increase the difficulty of cable laying

Because the cable laying is mainly bridge or pipe laying, and many enterprises are implementing the cable requirements of tight and small outer diameter. In the process of laying, there can be gaps and emit heat energy to ensure that the outer sheath of the cable is not damaged. Otherwise, it will bring some difficulties to the construction unit and cable laying.

(4) Reduce service life

Power on for a long time after cable laying. Energization will generate heat energy. The allowable working temperature of the conductor is 70 ° C, and the allowable long-term working temperature of the silica gel line is 180 ° C. In summer, the working temperature will rise, and these temperatures will be emitted through the outer protective layer. The thickness of the sheath increases, and the heat energy is difficult to be emitted, which will affect the service life of the cable. Under the action of heat, a series of physical and chemical changes take place in the insulation layer, which loses the original excellent performance, leads to obvious decline in insulation performance, and even short circuit, affecting the normal operation of the unit.

Generally, the temperature resistance range of PVC wire is - 15 ℃ ~ 80 ℃, while silica gel wire can reach the temperature range of - 60 ℃ - 200 ℃. The service life of PVC wire is short, generally about two years, and the flexibility is poor. It is weak in aging resistance and easy to crack in sunlight. It is suitable for use in indoor lamps and household appliances. PVC wire itself is hard. Smooth surface and high brightness correction: the cost of V of the same specification is much lower than that of silica gel line, and the compressive strength is also lower than that of silica gel line. The bending recovery ability of PVC line is poor. Once it is bent and folded, it is difficult to restore its original appearance. The silicone wire also has shortcomings, such as poor tear resistance of the sheath and high manufacturing cost.

Respective uses

Silica gel high temperature wire is used in electric heating appliances, paint baking rooms, lighting equipment, lighting and household products, lithium batteries. Teflon high temperature line can be used in instruments and meters, aerospace, electric power smelting, chemical industry, ships, vehicles, food machinery, household appliances, drying room, etc.