The same is the casing, but the casing has the difference between heat-shrinkable heat-shrinkable tubing and insulating casing. Heat-shrinkable tubing is also divided into double-wall heat shrinkable tubing, Teflon heat shrinkable tubing, and heat shrinkable tubing; Insulating casing is divided into Teflon insulating casing and pvc insulating casing. Here are the differences between pe casing and pvc heat shrinkable casing.
Both pe and pvc are commonly used polymer materials in heat shrinkable products, but there are differences between the two. Here is a brief introduction.
Polyethylene, referred to as pe, is a polymer of ethylene, non-toxic, easy to color, good chemical stability, cold resistance, radiation resistance, and good electrical insulation. It is suitable for packaging materials for food and medicines, food utensils, medical equipment, and insulation materials for the electronics industry, such as heat shrinkable tubing.
Polyvinyl chloride, or pvc for short, is a polymer of vinyl chloride. It has good chemical stability, resistance to acid, alkali and some chemicals. It is resistant to moisture, aging, and flame retardant. The temperature cannot exceed 60℃ when it is used, and it will become hard at low temperatures. Polyvinyl chloride is divided into soft plastic and hard plastic. The soft ones are mainly made into films, which can be used as packaging materials, rainproof products, agricultural seedling raising films, etc., as well as insulation layers for cables and wires, and artificial leather products. Rigid ones are generally made of pipes and plates. The pipes are used as water pipes and pipes for transporting corrosion-resistant fluids. The plates are used as linings and floors of various storage tanks.
Polyvinyl chloride (pvc) resin is not toxic, and polyvinyl chloride monomers are highly toxic. Whether polyvinyl chloride products are toxic, one depends on whether the residual monomers in the polymerization process are removed to certain requirements, and two It depends on whether the additives added in the process are toxic. For example, if the content of vinyl chloride monomer in PVC food cling film is too high, especially in high-temperature environments such as microwave ovens, it is easy to decompose substances that have carcinogenic effects on the human body; in addition, plasticizers and stabilizers for processing PVC cling film If the choice is not good, it is easy to cause certain harm to the human body.