Why is the FEP PTFE double-wall heat shrinkable sleeve anti-ultraviolet and flame retardant

Yozonetech FEP PTFE Double-wall heat shrinkable sleeves are basically made of EVA5110, LDPE1I2A, hot melt adhesive, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene fluoride and various special materials. When used in outdoor conditions and exposed to a large amount of ultraviolet rays, the FEP PTFE heat shrinkable tube will accelerate the aging and reduce the performance, such as tensile strength, elongation at break and other mechanical properties will be significantly reduced, so in order to avoid the performance of the material itself, it is required to heat The shrink tube has the functions of anti-ultraviolet and anti-ultraviolet.

  The FEP PTFE double-wall heat-shrinkable sleeve processed by the flame retardant can effectively prevent, delay or terminate the spread of the flame when attacked by an external fire source, so as to achieve the effect of flame retardant. The flame retardants used in heat shrinkable tubes are generally composed of: halogen-based flame retardants, phosphorus-based flame retardants, nitrogen-based flame retardants, phosphorus-halogen-based flame retardants, and special flame retardants for electrical tracking resistance. Flame retardants are environmentally friendly products that meet the needs of the global environment.

   There are many types of flame retardants, which are divided into additive flame retardants and reactive flame retardants according to the method of use. Flame retardants mainly include organic flame retardants and inorganic flame retardants, halogenated flame retardants (organic chlorides and organic bromides) and non-halogen. Organic are some flame retardants represented by bromine, phosphorus nitrogen, nitrogen and red phosphorus and compounds, and inorganic are mainly flame retardant systems such as antimony trioxide, magnesium hydroxide, aluminum hydroxide, and silicon.

   Reactive flame retardants are used as a monomer to participate in the polymerization reaction, so the polymer itself contains flame retardant components.