What are the characteristics and identification methods of Low smoke zero halogen flame retardant wires? We don't know anything about Low smoke zero halogen flame retardant wires. Many people only know about wires, but we still know very little about some wires with different uses. So if we want to know about Low smoke zero halogen flame retardant wires, we should first learn about the characteristics and identification methods of Low smoke zero halogen flame retardant wires? The specific knowledge answers are as follows:

What are the characteristics of Low smoke zero halogen flame retardant wires?

Each kind of wire has different uses, because it has characteristics that other wires do not have. So before we buy Low smoke zero halogen flame retardant wire, let's first understand what the characteristics of Low smoke zero halogen flame retardant wire are.

1. The characteristics of Low smoke zero halogen flame-retardant wires -- the tensile strength is greater than that of general PVC wires: the tensile strength of general PVC wires is greater than 1.05Kgf/mm2, while the tensile strength of Low smoke zero halogen wires is greater than 1.2Kgf/mm2;

2. Features of Low smoke zero halogen flame retardant wires - good weather resistance (-30 ℃~105 ℃); Having good softness (hardness of 80-90);

3. The characteristics of Low smoke zero halogen flame retardant wires are non shifting (because no plasticizer is added in the formula of this product, it will not have shape shifting); No toxic black smoke will be generated during combustion (a small amount of white smoke will be generated); High volume resistivity: PVC wires are generally 1012~1015 Ω/cm3, and Low smoke zero halogen wires are more than 1016 Ω/cm3; (7) It has good high voltage resistance characteristics: PVC wires are generally resistant to more than 10KV, while Low smoke zero halogen wires are up to more than 15KV; (8) Has good elasticity and viscosity.

What is the identification method of Low smoke zero halogen flame retardant wire?

1. Identification method of Low smoke zero halogen flame retardant wire is product name identification method. Wire -- Low smoke zero halogen flame retardant polyethylene insulated wire and cable; Cable -- Low smoke zero halogen flame retardant polyethylene insulated Low smoke zero halogen flame retardant polyethylene sheathed power cable. Generally, Skeuomorph have slightly different names, such as polyethylene insulated Low smoke zero halogen sheathed flame-retardant power cables, etc.

2. Identification method of Low smoke zero halogen flame retardant wires: skin scalding method. Iron the insulation layer with an electric soldering iron and there should be no obvious dents. If there are large dents, it indicates that there are defects in the material or process used in the insulation layer. Alternatively, use a lighter for barbecue, which should not be easily ignited under normal circumstances. After prolonged combustion, the insulation layer of the cable is still relatively intact, without thick smoke or pungent odor, and the diameter has increased. If it is easy to ignite, it can be determined that the insulation layer of the cable does not use Low smoke zero halogen materials (most likely polyethylene or cross-linked polyethylene materials). If significant smoke appears, it indicates that the insulation layer is made of halogenated materials. If after prolonged combustion, the insulation surface falls off severely and the diameter does not increase significantly, it indicates that appropriate irradiation crosslinking process has not been carried out.

3. The identification method of Low smoke zero halogen flame retardant wires is hot water immersion method. Soak the wire core or cable in hot water at 90 ℃, and under normal circumstances, the insulation resistance will not rapidly decrease and remain above 0.1M Ω/Km. If the insulation resistance drops rapidly or even drops below 0.009M Ω/Km, it indicates that it has not undergone appropriate irradiation crosslinking process. (Polyethylene or cross-linked polyethylene insulation materials are not suitable for identification using this method, and can be identified using the method described in the second clause above).

4. Density comparison method for identification of Low smoke zero halogen flame retardant wires. The density of Low smoke zero halogen materials is higher than that of water, so a small amount of insulation layer can be peeled off and put into water. If it floats above the water surface, it is definitely not a Low smoke zero halogen material.