PVC environmentally friendly flame retardant cable material

PVC environmentally friendly flame-retardant cable material is based on polyvinyl chloride, adding stabilizers, dioctyl phthalate, diisodecyl phthalate, dioctyl terephthalate, and trioctyl trimellitate. Particles prepared by mixing, kneading and extruding plasticizers such as esters, inorganic fillers such as calcium carbonate, auxiliaries and lubricants.

PVC environmentally friendly flame-retardant cable material is cheap and has excellent performance. It has long played an important role in wire and cable insulation protection materials. However, this material contains harmful substances to the environment and human body, and there are many problems when used in special environments. With the enhancement of people's environmental awareness and the improvement of material performance requirements, higher requirements have been put forward for PVC environmentally friendly flame-retardant cable materials.

It differs in terms of environmental protection due to the use of additives such as stabilizers, plasticizers and various fillers. It is generally measured by the testing methods and standards of ROHS or REACH, and is divided into environmentally friendly and non-environmental PVC cable materials. Since the structures of wires and cables are similar and extremely simple, the insulation and sheath outside the conductive core are mostly covered by plastic or rubber. Users select models and specifications based on usage and layout environment, and manufacturers select materials and manufacturing processes based on relevant standards.

Currently, plastics account for 91% of coating materials, and polyvinyl chloride accounts for 80% of plastics. Other data show that in the United States, plastics account for 85% of the coating materials in the wire and cable industry, of which polyvinyl chloride accounts for 60% of the plastics. Polyvinyl chloride is a chlorine-containing polymer. It has good flame retardant properties and various properties required for the production and use of cables. It is cheap and is one of the most widely used plastics in the world.

As people's environmental awareness increases and the concept of sustainable development becomes more and more popular, there are many debates about the environmental pollution caused by plastics and whether polyvinyl chloride should be banned. However, the production and use of polyvinyl chloride are constantly growing. This is This is especially evident in China.

With the development of science and the deepening of research, many environmentally friendly PVC products have been developed, and wires and cables have also benefited from them. Environmentally friendly PVC cable materials matching environmentally friendly PVC wires and cables have been developed in recent years. The rapid development in 2016 is a proof of this.

Users’ environmental requirements for PVC wires and cables and the development of environmentally friendly PVC cable materials. After the cable materials are successfully prepared, they are tested on ICP testing equipment using ROHS or REACH detection methods and standards. The heavy metal content in all material components, such as DEHP and nonylphenol, is , polybrominated biphenyls and other banned substances and controlled substances, etc. Since each country has different requirements for content standards, the corresponding environmental protection standards are also different.

Test units are generally measured in 10-6. Stabilizers for environmentally friendly cable materials generally use calcium zinc stabilizers. The most important thing about PVC cable materials that meet REACH standards is that they cannot use 16 substances such as DEHP as plasticizers.

Non-environmentally friendly cable materials generally use lead salts as stabilizers because they contain heavy metals such as lead, chromium, cadmium, mercury, and barium, which can cause great damage to the environment and human health, and are subject to restrictions or restrictions by more and more countries. Use prohibited.

The insulation and sheath of wires and cables used in lines and electrical equipment with lower voltages (below 1 kV) can be covered with PVC, while the sheaths of medium and high-voltage wires and cables (greater than 6 kV) are mostly made of PVC. Covered.

Environmentally friendly PVC cable materials[edit]

Entering the 21st century, with the enhancement of human environmental awareness and people's concern for their own health, environmental issues have become the focus of human society. Many countries, regions and organizations have formulated strict standards and regulations to restrict the use of harmful substances, especially are RoHS and REACH regulations.

The EU stipulates that products entering EU countries after July 1, 2006 must comply with environmental protection RoHS regulations. Traditional PVC cable materials contain a certain amount of heavy metal elements and other harmful substances, so they do not comply with RoHS regulations, which has become an important factor restricting the application of PVC wires and cables in electrical equipment, infrastructure, capital construction and other occasions.

The European Union announced the first batch of candidate substances list for SVHC (Substances of Very High Concern), and the REACH regulation was officially implemented. All preparations and articles entering the EU will be controlled by this regulation, although the regulation does not prohibit chemicals containing these substances of high concern from entering the EU. market, but all require a comprehensive set of procedures such as registration, evaluation, authorization and restrictions. This has led some EU customers to require that the products provided by their suppliers are not allowed to contain the above substances in order to simplify the process. Therefore, it has had a significant impact on the production of PVC cable materials. In order to meet the requirements of environmental protection regulations, environmentally friendly PVC cable materials came into being and quickly became one of the themes in the current development of PVC cable materials. Requirements for environmentally friendly PVC cable materials: low lead and heavy metal content, low smoke, low hydrogen chloride, low or non-toxic.

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