Radiation cross-linked cables are wires made by using radiation cross-linking technology. Radiation crosslinking is a process in which high-energy electron beams generated by electron accelerators bombard insulating layers, causing molecular chains to break and form polymer free radicals. Then, the polymer free radicals recombine to form cross-linking bonds, transforming the original linear molecular structure into a three-dimensional network molecular structure, thus forming cross-linking. The new type of home decoration and construction wires developed and produced by using this physical method are environmentally friendly, safe and have a long service life. This product holds a significant share in the construction market of Western countries and is one of the ideal construction lines internationally.

Product features

It can withstand a temperature of 300 degrees Celsius instantly and operate normally at 125 degrees Celsius. When heating the insulating layer with an electric soldering iron, there should be no obvious indentation. If there are large depressions, it indicates that there are defects in the materials or manufacturing processes used for the insulation layer. Or, you can grill it with a lighter. Under normal circumstances, it should not be ignited easily. After long-term burning, the insulation layer of the irradiated cross-linked low smoke zero halogen flame retardant cable remains relatively intact, without thick smoke or pungent odor, and its diameter has increased. If it is easy to ignite, it can be determined that the insulation layer of the cable is not made of low smoke zero halogen materials. If there is obvious smoke, it indicates that the insulating layer is made of halogenated materials. If the insulation surface peaking severely after long-term burning and the diameter does not increase significantly, it indicates that appropriate irradiation crosslinking process treatment has not been carried out.

2. Soak in hot water and observe the change in insulation resistance. Immerse the wire core or cable in hot water at 90 degrees Celsius. Under normal circumstances, the insulation resistance does not drop rapidly and remains above 0.1 megohms per kilometer. If the insulation resistance drops rapidly, even below 0.009 megohms per kilometer, it indicates that the cable has not undergone appropriate irradiation cross-linking treatment and is not an irradiated cross-linked low smoke zero halogen flame retardant cable. Polyethylene or cross-linked polyethylene insulation materials are not suitable for identification by this method.

3. Comparative density identification. The density of irradiated cross-linked low smoke zero halogen flame retardant cable materials is higher than that of water. A small amount of insulation layer can be peeled off and placed in water. If it floats above the water surface, it is definitely not a low smoke zero halogen material.

Product features

It features outstanding mechanical and physical properties, good resistance to environmental stress cracking, excellent wear resistance, and is more capable of withstanding concentrated mechanical stress than PVC and PE.

(2) Resistant to various chemical solvents and relatively stable in various corrosive media around.

(3) The outer diameter of irradiated cross-linked polyolefin insulated wires is smaller than that of all polyvinyl chloride insulated wires of the same specification and cross-sectional area. In pipeline construction, the use of pipe diameters can be reduced, or under the same pipe diameter conditions, multiple threads can be used to lower the construction and installation costs.

(4) The weight of irradiated cross-linked polyolefin insulated wire products is much lighter than that of polyvinyl chloride insulated wire products, making installation and transportation more convenient, reducing labor intensity and transportation costs.

(5) The rated temperature of irradiated cross-linked insulated conductors during long-term operation can reach 125℃, and their current-carrying capacity is greater than that of PVC insulated conductors.

(6) It does not release corrosive or toxic gases during combustion and does not cause secondary hazards. It meets modern fire safety requirements and is a new type of environmentally friendly product.

(7) It has excellent electrical performance, with insulation resistance much higher than that of PVC wires (cables), and the tangent value of the dielectric loss Angle tan δ is very small, basically not changing with temperature.