Knowledge class of electrical insulating tape

Adhesive TapeThe full name of electrical tape is PVC electrical insulation adhesive tape, which is also called electrical insulation tape or insulating tape. Electrical tape is suitable for insulation of various resistance parts. Generally, there are three kinds of electrical insulating tapes, one is insulating black tape, the second is PVC electrical flame retardant tape, and the third is high-voltage self-adhesive tape. The three kinds have their own functions. When purchasing electrical insulating tape, how to judge the quality of electrical insulating tape?

There are three types of electrical insulating tapes:Adhesive Tape

One is insulating black tape, which only has insulation function, but is neither flame retardant nor waterproof. Now it has been gradually eliminated, and it is only used in the electrical of some civil buildings.

The second is PVC electrical flame retardant tape, which has three functions: insulation, flame retardant and waterproof. However, because it is made of PVC, it has poor ductility, can not wrap the joint tightly, and the waterproof performance is not very ideal, but it has been widely used now.Adhesive Tape

The third is high-voltage self-adhesive tape, which is generally used at higher voltage. Because of its good ductility and better waterproof than the second, it is also used in the field of low voltage. However, because its strength is not as strong as PVC electrical flame retardant tape, the two are usually used together.

Quality identification of electrical tape

From the outside, we can see whether there are defects, whether the tape rewinding is comfortable, whether the slitting is rough, and whether it is smooth. We can see the tape material (there are many kinds of electrical insulating tape, so we won't introduce the material quality one by one, and in most cases, we have to see the use). We are looking at the glue. Now most of the glue has evolved to environmental protection, and the taste is very important. If it is very pungent, It is more likely to be a defective product (not all tapes). Whether there is anti adhesion when the tape is pulled down for use and whether there is residual glue when it is torn off after use. If the residual glue is on the product, this is the cause of the defective tape. The PVC material is basically the same. It mainly depends on the glue. After a period of time after the tape with poor quality is wrapped, it can be seen that the glue is separated from the PVC material, It looks sticky and uncomfortable, and this problem will not occur with high-quality tape.