In today's environmentally conscious world, the use of low smoke zero halogen (LSZH) sheath compound has become increasingly popular among cable manufacturers. Not only does it prevent the emission of toxic smoke and fumes in case of fire, but it also reduces environmental impact by eliminating the release of harmful halogens, such as chlorine and fluorine. However, choosing the right non-corrosive LSZH sheath compound can be a challenging task, as there are various factors to consider. Therefore, this ultimate guide will help you make an informed decision on which LSZH sheath compound to choose.
1. Environmental performance:
The primary role of LSZH sheath compounds is to reduce environmental impact in the event of a fire. Therefore, it is essential to choose an LSZH sheath compound that offers superior environmental performance, by having zero or low halogen content and producing minimal amounts of smoke and toxic fumes.
2. Mechanical properties:
You must consider the mechanical properties of the LSZH sheath compound, as it can impact the overall performance of the cable. Choose a compound with excellent tensile strength and elongation properties, to ensure the cable's durability and reliability.
3. Flame retardancy:
Flame retardancy is a critical feature to look for in LSZH sheath compounds. When subjected to heat and flames, the sheath compound should self-extinguish and prevent the fire from spreading to the cable core. Select a sheath compound that complies with international standards such as IEC 60332, UL 1666, and BS 7622.
4. Heat stability:
LSZH sheath compounds should handle high temperatures, ensuring the cable's performance in demanding applications. Hence, choose compounds with high-temperature stability to prevent deformation and ensure that the cable stays functional even in extreme environments.
5. Chemical resistance:
LSZH sheath compounds can interact with other chemicals during the cable manufacturing process. Therefore, it is essential to choose a compound with excellent chemical resistance to avoid possible chemical reactions, which could lead to cable failure.
6. UV resistance:
The LSZH sheath compound may also be vulnerable to UV radiation, which can affect the cable's longevity and durability. Choose a sheath compound with adequate protection against UV light and other environmental stressors.
Conclusion:
Choosing the perfect LSZH sheath compound requires careful consideration of several factors. By focusing on the key features mentioned above, you can select an LSZH sheath compound that is non-corrosive and offers superior environmental performance, flame retardancy, heat stability, and chemical and UV resistance. Manufacturers must make informed decisions when opting for an LSZH sheath compound to ensure that the cable they produce is safe, durable, and reliable for the end-user.
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