Halogen-free flame retardant cables relevant assessment standards

As a halogen-free flame retardant cable, it can not contain halogenated flame retardant fuel, so more of the following methods: 1. Selection of metal hydrate as a flame retardant fuel, relying on dehydration and heat absorption reaction to inhibit the generation of flammable substances to isolate the oxygen on its surface generates, commonly used common inorganic hydrate hydrate for hydrated aluminum oxide. In addition, magnesium hydroxide, talcum powder with crystalline water and other hydrated metal compounds are also used as flame retardant materials. 2. In addition to the selection of non-halogenated flame retardant, the selection of polymers is also quite important, i.e., selecting those with high decomposition temperature and can be filled with a large number of inorganic substances, without compromising the mechanical strength of the non-halogenated polymers, the general selection of vinyl polymers, ethylene-propylene rubber, as well as thermoplastic synthetic rubbers, etc. 3. According to the materials selected for halogen-free flame retardant cables, halogen-free flame retardant cables have the following characteristics: less smoke. It does not produce hydrogen halide gas which is harmful to human body; it does not produce corrosive gas; it is excellent in flame retardant and non-delaying; it has certain mechanical and physical properties and shares to meet the requirements of cable use.4. Halogen-free flame retardant cables are widely used in the following occasions: nuclear power plants, subway stations; telephone exchanges and computer control centers; high-rise buildings, buildings and hotels, broadcasting, television stations; important military facilities, oil platforms and so on.

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