FEP heat shrink tubing is a special polyolefin material, which can also be called EVA material. It has the functions of low temperature shrinkage, softness, flame retardancy, insulation and corrosion resistance. It is suitable for insulation protection with a voltage level below 600V. When in use, the heat-shrinkable tube is heated to a high elastic state, a load is applied to make it expand, and it is rapidly cooled while maintaining the expansion, so that it enters a glass state, and this state is fixed.
It can be roughly divided into three types: PVC heat-shrinkable tubing, PET heat-shrinkable tubing, and FEP heat-shrinkable tubing. Among them, the performance of PET heat shrinkable tube is better, because it greatly exceeds PVC in terms of heat resistance, electrical insulation, and mechanical properties. The environment will not produce toxic effects, which is more in line with the advocated environmental protection requirements.
The development and utilization of FEP heat shrink tubing has brought great convenience and safety to our life. Because its elasticity is relatively small, the interface may generate breath when it expands with heat and contracts with cold during operation, so sealing technology is very important to prevent moisture from infiltrating.
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