For low smoke halogen-free flame retardant wire we rarely know, many people only know the wire, but for some different uses of the wire understanding is still very little, the cable takes you to understand the characteristics of low smoke halogen-free flame retardant wire and identification method is what, the specific knowledge is as follows:

Characteristics of low smoke halogen-free flame retardant wire

1. The characteristics of low-smoke halogen-free flame retardant wire - tensile strength is larger than general PVC wire: general PVC wire tensile strength is greater than 1.05Kgf/mm2, while low-smoke halogen-free wire tensile strength is greater than 1.2Kgf/mm2;

2. The characteristics of low-smoke halogen-free flame retardant wire - with good weather resistance (-30℃ ~105℃); Have a good degree of softness (hardness of 80-90);

3. The characteristics of low-smoke halogen-free flame retardant wire - with non-displacement (because this product formula does not add plasticizer, so there will be no displacement); Burning will not produce toxic black smoke (will produce a small amount of white smoke); Has a high volume resistivity: PVC wire is generally 1012~1015Ω/cm3, low smoke halogen-free wire is greater than 1016Ω /cm3; (7) It has good high voltage resistance: PVC wire is generally resistant to more than 10KV, and low-smoke halogen-free wire is up to more than 15KV; (8) It has good elasticity and viscosity.





Identification method of low smoke halogen-free flame retardant wire

1, low smoke halogen-free flame retardant wire identification method of product name identification method. Wire - low smoke halogen-free flame retardant polyethylene insulated wire and cable; Cable - Low smoke halogen-free flame retardant polyethylene insulation Low smoke halogen-free flame retardant polyethylene sheathed power cable. Under normal circumstances, the name of imitation products will be a little different, such as polyethylene insulation low-smoke halogen-free sheathed flame retardant power cables and so on.

2, the identification method of low-smoke halogen-free flame retardant wire skin burning method. The insulation layer should be ironed without obvious depression, and if there is a large depression, it indicates that the material or process used in the insulation layer is defective. Or barbecue with a lighter, under normal circumstances should be not easy to ignite, the insulation layer of the cable is still relatively complete after a long time of burning, there is no smoke and smell, and the diameter has increased. If it is easy to ignite, you can be sure that the insulation layer of the cable is not made of low-smoke halogen-free materials (most likely polyethylene or crosslinked polyethylene). If there is a large smoke, it means that the insulation layer is using halogenated materials. If after a long time of combustion, the insulation surface is seriously shed, and the diameter is not significantly increased, it indicates that there is no appropriate irradiation crosslinking process treatment.

3, low smoke halogen-free flame retardant wire identification method of hot water soaking method. The wire core or cable is soaked in hot water at 90 ° C, and the insulation resistance will not drop rapidly under normal circumstances and remain above 0.1 MΩ /Km. If the insulation resistance drops rapidly or even below 0.009MΩ/Km, it indicates that it has not been treated by the appropriate irradiation crosslinking process.

4, low smoke halogen-free flame retardant wire identification method density contrast method. The density of low-smoke halogen-free materials is higher than that of water, and a little insulation layer can be peeled off and put into water. If it floats above the water surface, it is definitely not low-smoke halogen-free materials.

The above is the introduction of the characteristics and identification methods of low-smoke halogen-free flame retardant wire. After we have understood the characteristics of low-smoke halogen-free flame retardant wire, even if we know this kind of wire, we hope to help you.

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