source:Industry News Popular:adapter release time:2021-06-08 15:15:16 Article author:sznbone
The excellent properties of environmentally friendly cables are mainly derived from their insulating materials. These materials are mainly thermoplastic polyolefins represented by polyethylene, polypropylene and ethylene-propylene rubber, and thermoplastics represented by polyethylene-based and polypropylene-based blends. Polyolefin blends; thermoplastic polyolefin nanocomposites doped with nanofillers; polyolefin materials modified by chemical methods. Although these materials have many advantages, they still have certain shortcomings in the application of wires and cables. As a consumer, you should also understand this knowledge to ensure that problems can be avoided when using it.
Environmentally friendly cables mainly refer to cables that do not contain heavy metals such as lead, cadmium, hexavalent chromium, mercury, etc., and do not contain bromine-based flame retardants. It does not produce harmful halogen gas, does not produce corrosive gas, produces less fever when burned, and does not pollute the soil. In addition, it also needs the following characteristics to truly be called an environmentally friendly cable:
1. High flame retardancy:
The environmental protection cable fully guarantees its high building requirements for fire protection, the cable is not easy to burn during a fire, and can effectively prevent the spread of flame and the expansion of disasters after burning.
2. Halogen-free:
The use of environmentally friendly insulating layer, sheath and special oxygen barrier materials not only have good electrical and physical and mechanical properties, but also ensure that the product is halogen-free, solve the "second pollution" formed during combustion, and avoid When traditional PVC wires burn, they produce carcinogenic "dioxin" substances.
3. Low toxin:
The insulation and sheath do not contain lead, cadmium and other heavy metals harmful to the human body, and will not pollute the soil and water when the cable is used and discarded. And after harsh toxicity experiments, the white rats were safe and sound under the specified experimental conditions.
4. No corrosive gas:
Adopting a new type of special coating material that is non-polluting to the environment, no toxic gases such as HCL are generated during production, use and combustion, and very little acid gas is emitted, which causes little damage to personnel, equipment and instruments, and is more environmentally friendly.
5. High light transmittance:
The smoke produced when the cable burns is extremely thin, which is beneficial to the evacuation of personnel and the conduct of fire fighting. 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.
6. Waterproof and anti-ultraviolet:
Using green materials with special molecular structure to ensure ultra-low water absorption. The special ultraviolet absorber makes the product have good anti-ultraviolet function. Ensure the safety of the use of this kind of products and prolong the service life.
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