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The difference between environmental protection cable and low smoke halogen-free cable

by:AAA     2020-03-25
In many key projects, such as fire protection, monitoring, alarm and other places, low smoke halogen-free cables will be used, which are usually called environmental protection cables, in fact, environmental protection cable does not refer to low-smoke halogen-free cable. The following is a detailed analysis of the difference between environmental protection cable and low-smoke halogen-free cable: 1. Halogen-free: green environmental protection insulation layer, sheath and special oxygen insulation layer materials are adopted, it not only has good electrical properties, physical and mechanical properties, but also ensures that the product does not contain halogen and solves the 'secondary pollution' formed during combustion ', to avoid the traditional PVC wire burning can produce carcinogenic 'dioxine' substances. 2. High flame retardancy: Environmental protection cables fully guarantee their building requirements with high fire protection requirements. Cables are not easy to burn in case of fire, and can prevent the spread of flames and the expansion of disasters after burning. 3. Low toxin: the insulation and sheath do not contain heavy metals such as lead and cadmium that are harmful to human body, and will not pollute the soil and water source when the cable is used and discarded. And after rigorous toxicity tests, the mice were safe and sound under the prescribed experimental conditions. 4. No corrosive gas will be generated: new special coating materials that are pollution-free to the environment will be adopted, and gases such as HCL will not be generated during production, use and combustion, and very little acid gas will be emitted, it has little damage to personnel, equipment and instruments and shows more environmental protection characteristics. 5. Waterproof and UV-proof: Green and environment-friendly materials with special molecular structure are adopted to ensure ultra-low water absorption. Special ultraviolet absorber makes the product have good ultraviolet protection function. The safety of this kind of products is ensured and the service life is prolonged. The first to launch the name of 'environmental protection cable' is a Japanese company, whose product standard is FN (Ecomaterial) Ecological cable standards, Western countries, the United Kingdom has also formulated advanced environmental protection cable standards, and later gradually spread to the world. 6. High light transmittance: the smoke generated when the cable burns is extremely thin, which is conducive to the evacuation of personnel and the fire fighting work. The light transmittance of the product is greater than 40℃, which is far higher than the standard of less than 20% for traditional flame retardant cables.
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