We don't see many cables in our daily lives, but they are used in real life. Since they are so closely related to our lives, it's worth learning more about them. Today, we will focus on flame-retardant cables, which play a significant role in safety protection. The following is a basic overview of flame-retardant cables and their advantages.
1. Overview of Flame-Retardant Cables
Flame retardant means that under specified test conditions, when a specimen is burned, the flame spreads within the specimen within a limited range and extinguishes itself after the ignition source is removed. This means that the cable has the ability to prevent or delay the occurrence or spread of flames. Wires and cables combust due to the generation of flammable gases caused by external heating. To achieve flame retardancy, the three elements that cause combustion must be suppressed: flammable gases, heat, and oxygen. Therefore, flame-retardant wires and cables are typically made by adding halogen compounds and metal oxides to the sheathing material. While this is an excellent method from a flame-retardant perspective, the halides in these materials release large amounts of smoke and hydrogen halide gas during combustion. This reduces visibility during fires, significantly hindering safe evacuation and firefighting efforts, and often leads to suffocation and death from the toxic gases.
Furthermore, hydrogen halide gas reacts with water in the air to form "hydrogen halide acid," which severely corrodes equipment and buildings, causing secondary damage.
Currently, with the continuous advancement of technology, flame retardancy has evolved from halogen-based flame retardancy to low-halogen and halogen-free options.
II. Advantages of Flame-Retardant Cables
1. Low Toxicity of Flame-Retardant Cables:
The insulation and sheathing of new flame-retardant cables do not contain heavy metals harmful to the human body, such as lead and cadmium. Therefore, the cables will not pollute soil or water sources during use or disposal, making them safe for use.
2. Halogen-Free Flame-Retardant Cables:
The new environmentally friendly flame-retardant cables utilize a green, environmentally friendly insulation layer and a special oxygen barrier material. They offer excellent electrical, physical, and mechanical properties, and are halogen-free, effectively eliminating "secondary pollution" during combustion. This significantly improves air quality and personal safety.
3. High Flame Retardancy:
Environmentally friendly cables fully meet the requirements of buildings with stringent fire protection requirements. In the event of a fire, the cables are less likely to burn, and flame-retardant cables can prevent flames from spreading, effectively controlling the spread of fire and the resulting damage and protecting personal safety.
Flame-Retardant Soft-Sheathed Communication Cables
Flame-Retardant Soft-Sheathed Communication Cables
4. High Light Transmittance of Flame-Retardant Cables:
Unlike other cables, flame-retardant cables produce large amounts of smoke when burning, facilitating evacuation and firefighting. With a light transmittance exceeding 50%, the new flame-retardant cables offer significant advantages compared to traditional flame-retardant cables, which typically have a light transmittance of less than 20%.
5. New flame-retardant cables do not produce corrosive gases:
New cables use a new, special coating material that is environmentally friendly and produces no harmful or toxic gases during production, use, or combustion. They emit very little or no acid gas, making them more environmentally friendly and reliable.
6. Simple Installation
New flame-retardant cables are more convenient to use, and installation is simpler and faster.
From the above, it's clear that flame-retardant cables are environmentally friendly, a crucial point. While we all know that the impact of continuous industrial development is increasingly severe on the environment, the special properties of flame-retardant cables allow them to be used in a manner consistent with green development. Therefore, flame-retardant cables are relatively environmentally friendly and reliable.
