What are the types of electrical tape? How to judge the quality of electrical insulating tape?
The full name of electrical tape is PVC electrical insulation adhesive tape, and some people call it electrical insulation tape or insulation tape. Electrical tape is suitable for insulation of various resistance parts. There are three general types of electrical insulating tapes, one is insulating black tape, the second is PVC electrical flame retardant tape, the third is high-pressure self-adhesive tape, and the three have their own functions. When choosing electrical insulating tape, how to judge the quality of electrical insulating tape?
Insulation black tape
It has only insulation function, but it is neither flame-retardant nor waterproof. It has been gradually eliminated, and only some people are still using it in the electrical of civil buildings.
PVC flame retardant tape
PVC electrical flame-retardant tape is one of the most common and widely used nowadays. It is made of polyvinyl chloride (PVC) film as the substrate and is evenly coated on the PVC film with pressure-sensitive adhesive. , Flame retardant, weather resistance, etc., not only suitable for wire winding, insulation and fixing of various motors and electronic parts such as transformers, motors, capacitors, voltage regulators, etc., but also for bundling, fixing, overlapping, repairing, sealing in industrial processes ,protection. At the same time, PVC electrical flame retardant tape is not as monotonous as black tape, and it is available in various colors such as red, yellow, blue, white, green, black, and transparent. It has three functions of insulation, flame retardant, and waterproof, but because it is PVC material, the ductility is poor, the joint cannot be wrapped tightly, and the waterproof performance is not good.
High pressure self-adhesive tape
Generally used in higher voltage, because of its good ductility, it is worse than the second in waterproof, so people also apply it in the field of low voltage, but because its strength is not as good as PVC electrical flame retardant tape , Usually these two are used together.
Identification of the quality of electrical tape
First look at it from the outside to see if there are any defects, whether the tape is rewinded, whether it is affixed, whether there is any burr, whether it is smooth, and whether the tape material is smooth. (There are many types of electrical insulating tapes. It depends on the usage).
Looking at the glue, most of the glue has evolved to environmental protection. The taste is very important. If it is very pungent, it is more likely to be a defective product (not all tapes). Is there any anti-sticking when the tape is pulled down? After use, remove any residual glue. If the residual glue is on the product, this is the fatal point of defective tape.
Note: The PVC material is basically the same, mainly looking at the glue. After a period of time, the poor quality tape is bandaged and untied. You can see the glue and the PVC material separate. It looks sticky, very uncomfortable, and the quality is good. The tape will not have this problem.