Application of low-smoke halogen-free wires?

- Nov 28, 2019-

Suitable for places with a rated voltage of 450 / 750V and below, with and without halogen, low smoke, flame retardant requirements and high safety and environmental protection requirements. Such as high-rise buildings, stations, subways, airports, hospitals, large libraries, gyms, villas, family homes, hotels, hospitals, office buildings, schools, shopping malls and other densely populated places.


Advantages of irradiated cross-linked low-smoke halogen-free flame-retardant wires

For traditional PVC (polyvinyl chloride) wires, when a fire occurs, the PVC mixture easily decomposes after being heated and escapes a large amount of highly toxic and corrosive HCL (hydrogen chloride) gas, and generates a large amount of highly toxic dense smoke, causing significant life. And property damage, and bring great difficulties to rescue work (such as the fire of the Korean subway). In order to avoid and reduce the fire and the secondary injury caused by the fire as much as possible, after a lot of research for more than ten years, people have found that changing the outer material and process used in the product can effectively solve the problem.


The main characteristics of halogen-free low-smoke flame-retardant wire and cable are that all materials do not contain halogen, and the amount of smoke released during combustion is small. The toxicity of halogen-containing cables to fire is terrible. If the toxicity of the gas concentration that can cause death in 30 minutes is judged to be 1, then the toxicity index of polyvinyl chloride is 15.01, and the toxicity index of halogen-free polymers is 0.79. During the fire, the strong and dense smoke made the victim unable to tell the direction, which prolonged the time spent in the fire. According to relevant information, when the light transmittance is 70%, the ability of the naked eye to distinguish the object image is only about 5m. And the light transmittance of the smoke emitted during the burning of polyvinyl chloride is below 15%, that is, the naked eye distance of a person in this dense smoke is only about 2m. Another feature of dense smoke is that it travels extremely quickly with hot airflow, and the speed can reach more than 20m / min. It can be seen that the use of halogen-free low-smoke wires and cables is essential to ensure safety.


To this end, advanced countries in the world have introduced halogen-free low-smoke flame-retardant materials to replace the same PVC, and formulated related standards. Europe, the United States, and Japan have been widely promoted in civilian wires. Our country has also formulated corresponding standards. For example, the country has formulated GB / T19666-2005 General Rules for Flame Retardant and Fire-resistant Wires and Cables, and the Ministry of Public Security has developed GA306.1-2001 "Flame-Retardant and Fire-resistant Cables: Plastic Insulation Classification and requirements for refractory cables ", the Ministry of Machinery Industry formulated JB / T 10491-2004" Crosslinked polymer insulated wires and cables with rated voltages of 450, 750V and below ", and Shanghai formulated engineering construction specifications DGJ08-93-2002 J10166- 2002) In a series of standards such as "Code for Fire Protection Design of Civil Building Wires and Cables", low-smoke halogen-free flame-retardant wires have been widely adopted in airports, subways, large buildings, and government projects.


Adhering to the purpose of "returning technology to society", we have used the company's high-tech advantages to introduce new high-performance environmentally friendly wires through the innovation of halogen-free low-smoke flame-retardant technology. It well solves the shortcomings of PVC decoration wires, halogen-free, low smoke, flame retardant and has excellent short-circuit load capacity. It is a wise choice when decorating. We believe that as people's living conditions improve, it is healthy and safe. Environmental protection is becoming more and more important, and the days when new high-performance environmentally-friendly cloth wires completely replace traditional PVC wires will soon be around.

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