What are the basic requirements of PVC environmental protection wire and cable?

A. PVC environmental protection wire and cable of the basic requirements of what aspects?1. Requirements for lead and heavy metal content of low lead and certain heavy metals will adversely affect human health, and in the PVC formula, usually need to be mixed with additives such as lead, cadmium, barium and other heavy metal compounds. However, since the 1990s, a number of developed and large electrical companies have formulated regulations, in the PVC wire and cable used, there are eight heavy metal content shall not be greater than the provisions. These new regulations both to the wire and cable manufacturers to bring new business opportunities, but also to the PVC cable manufacturers to bring serious challenges. 2. Requirements for its low smoke and low hydrogen oxide good flame retardant properties are PVC wire and cable is a very obvious advantage, but the ordinary flame retardant PVC cable in the fire combustion, will release a thick black smoke and a large number of HCI gas, resulting in a fire " secondary disaster " after the fire. secondary disaster", seriously affecting the evacuation of people and fire rescue work. Therefore, in the wire and cable flame retardant requirements at the same time, in some cases will be further proposed " low smoke " and " low HCI " requirements. 3. Requirements for low toxicity or non-toxicity for some of the household appliances, medical and health appliances and children's electric toys may be in contact with food, blood products, in addition to the requirements of the use of electric cables without lead and heavy metals, also requires non-toxic (non-toxic), non-toxic (non-toxic), non-toxic, non-toxic, non-toxic, non-toxic, non-toxic, non-toxic, non-toxic), and non-toxic. In addition to the requirement of lead-free and heavy metal-free, it is also required to be non-toxic (or low-toxicity). This means that all component materials used in a PVC formulation should be non-toxic. Cable material contains a large number of plasticizers, but the manufacture of non-toxic material must be non-toxic plasticizers. Therefore, the requirements of this PVC material than lead-free and heavy metal-free material is higher, the selling price is naturally more expensive.4. Other prohibited materials Currently, the European Union is trying to regulations, restrictions on certain items to ensure that wire and cable can meet the environmental requirements. Now can be identified: 1) asbestos; 2) poly by biphenyls and their ethers, polybrominated phenols; 3) polychlorinated biphenyls; 4) short-chain (C10 ~ C13) chlorinated paraffins.

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