TECHNICAL ARTICLE

How to avoid the rapid aging of FR4 epoxy fiber glass pipe?

2020-08-27 11:04  |  By: ZTELEC  |  125click

How to avoid the rapid aging of FR4 epoxy fiber glass pipe?

FR4 epoxy fiber glass pipe is an insulating material whose insulating performance is closely related to temperature. The higher the temperature is, the worse its insulating performance will be. In order to ensure the insulation strength, each insulating material has an appropriate maximum allowable working temperature. It can be safely used for a long period of time below this temperature, but will rapidly age if it exceeds the temperature. According to the degree of heat resistance, the insulation material is divided into Y, A, E, B, F, H, C and other grades. For example, the maximum allowable working temperature of grade A insulation materials is 105℃. The insulation materials in distribution power supply transformers and motors commonly used belong to grade A.

How do we prevent the FR4 epoxy fiber glass pipe from aging?

Avoid strong sunlight

Light aging is mainly caused by the damage to FR4 epoxy fiber glass pipe laminated tube through sunlight radiation, which often leads to loss of luster, fading, white flowers, peeling and other undesirable phenomena. So under normal circumstances, you had better not leave FR4 epoxy fiber glass pipe in the sun. Even though you want to moistureproof, you need to dry it in the shade and have air drying.

Pay attention to the operating temperature of FR4 epoxy fiber glass pipe

The operating temperature of FR4 epoxy fiber glass pipe is around 155 degrees, try not to exceed the maximum operating temperature of FR4 tube. Otherwise, there will be bending, poor insulation performance and so on. And life of FR4 epoxy fiber glass pipe is halved for every 8°C increase in ambient temperature.

Avoid high voltage

Voltage of FR4 epoxy fiber glass pipe can be up to tens of kilovolts, but that is the critical value. In the process of use, the voltage should not be too high. Partial discharge may occur in electrical equipment due to uneven medium or uneven electric field distribution, and discharge will send out a variety of rays and sound waves, which will also play a destructive role to the material. These all can cause aging of FR4 epoxy fiber glass pipe.

Reduce mechanical vibration

With the high-speed operation of electrical equipment nowadays, the vibration and noise generated by mechanical equipment will do great harm to the aging of insulation materials like FR4 epoxy fiber glass pipe.

Prevent corrosion

The deterioration of the air today and the chemical corrosion ions contained in the air corrode the FR4 epoxy fiber glass sheets very seriously. There are also some chemical factories. Therefore, it is better to protect the FR4 epoxy fiber glass pipe to reduce corrosion.

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