Low Smoke Zero Halogen Polyethylene

In the cable industry, safety and environmental friendliness are key considerations when selecting materials. Low Smoke and Halogen Free Polyethylene (LSZH PE), as an environmentally friendly and high safety cable material, has been widely used in many fields due to its low smoke and halogen free, flame retardant and excellent mechanical properties. In this article, we will introduce the characteristics and advantages of LSZH PE and its application in cables.

What is Low Smoke Zero Halogen Polyethylene?

Low-smoke Zero halogen polyethylene is a specially modified polyethylene material with halogen elements removed and specific flame retardants added to its chemical structure. Unlike traditional halogen-containing materials, low-smoke halogen-free polyethylene not only releases less smoke when it burns, but also does not release toxic halogen gases, which is in line with environmental and safety requirements.

Characteristics of Low Smoke Zero Halogen Polyethylene

1.Low Smoke Release

Low-smoke Zero halogen polyethylene releases significantly less smoke than conventional cable materials when burning. This feature improves the visibility of escape routes, especially in the event of a fire, and reduces injuries caused by smoke.

2. No Halogen Toxicity

Low smoke halogen free polyethylene does not contain halogen elements and therefore does not produce corrosive gases (e.g. hydrogen chloride or hydrogen fluoride) in the event of a fire. The halogen-free properties of this material make it the preferred material for applications with high safety requirements.

3. Excellent Flame Retardancy

Low-smoke Zero halogen polyethylene can effectively inhibit the spread of flame when in contact with an ignition source, and its flame retardant properties comply with international standards such as UL94 V-0. This material maintains a high level of safety even under long periods of high temperature.

4. Chemical resistance and environmental aging resistance

Polyethylene itself has good chemical resistance, and low smoke halogen free polyethylene through a special process to further enhance the corrosion resistance of the material. It can effectively resist the erosion from the external environment (such as moisture, acid and alkali, etc.) and extend the service life of the cable.

5. Excellent mechanical properties

The mechanical properties of low smoke halogen free polyethylene are also excellent, with strong resistance to stretching, compression and abrasion. These characteristics make it able to perform stably in demanding working environments and adapt to a variety of harsh environments.

Key Application Areas For Low Smoke Zero Halogen Polyethylene

Due to its outstanding performance, low smoke halogen free polyethylene is widely used in many demanding industries. The following are some of the major application areas:

1. Construction cables

In the construction industry, especially in places such as subways, commercial buildings and residences, cable safety requirements are extremely high. Low-smoke, halogen-free polyethylene cable materials have become the preferred cable sheath and insulation material for these applications due to their low-smoke, halogen-free and flame-retardant properties. By reducing the amount of smoke released in the event of a fire, this material helps provide a safer environment for emergency evacuation.

2. Rail transportation

Rail transit systems such as subways and high-speed railroads often require higher safety standards, and low-smoke halogen-free polyethylene cables are widely used in rail transit electrical equipment. Their excellent flame retardancy and low smoke characteristics ensure that they do not exacerbate a fire and minimize the impact on the environment in the event of a fire.

3.Communication Cables

In the communications industry, low smoke halogen free polyethylene is widely used in the insulation and sheath portion of power and signal transmission cables. Due to the excellent electrical insulation properties and anti-interference ability of this material, it ensures stable and reliable operation in high-frequency and high-speed signal transmission.

4. Data center and computer network

In data centers and large-scale computer networks, the flame retardant and low-smoke characteristics of cable materials are particularly important. Low-smoke halogen-free polyethylene can effectively avoid fire caused by overheating or short-circuit cable, while reducing the release of toxic gases, to protect equipment and personnel safety.

5. New energy and photovoltaic cables

Low smoke halogen free polyethylene is also widely used in the new energy industry, especially in the field of photovoltaic power generation cables. Photovoltaic cables need to be outdoors for a long time exposed to sunlight, rain and other natural environments, low-smoke halogen-free polyethylene by virtue of its ultraviolet resistance and anti-aging properties, can work stably at high temperatures and in harsh outdoor environments.

Technical Advantages of Low Smoke Zero Halogen Polyethylene

As a cable material, low smoke halogen free polyethylene has the following technical advantages over traditional cable materials:

1. Environmental protection and health

The halogen-free design of low smoke halogen free polyethylene makes it a more environmentally friendly material. It does not produce harmful halogen gases (such as chlorine or fluorine gas) in case of fire, which helps to reduce environmental pollution and health hazards to personnel.

2. Excellent aging resistance

Low-smoke halogen-free polyethylene has strong anti-aging properties, can maintain stable physical properties for a long time in high temperature, ultraviolet radiation and other environments to adapt to harsh working conditions.

3. Excellent flame retardant properties

The flame retardant property of the material makes the flame spread slower in case of fire, thus effectively avoiding the spread of fire accidents and ensuring the safety of personnel and equipment protection.

4. Excellent electrical performance

Low-smoke halogen-free polyethylene has good electrical insulation properties, which can effectively prevent current leakage and ensure the normal operation of electrical equipment.

5. Chemical corrosion resistance

Polyethylene material itself has good chemical corrosion resistance, and low-smoke halogen-free polyethylene through the modification process, its corrosion resistance has been further improved. It can adapt to various acid and alkali environments and extend the service life of the cable.