Enhancing PVC Cable Compounds with Magnesium Hydroxide: A Safer and More Efficient Flame Retardant

In the modern cable industry, ensuring fire safety while maintaining material performance is a key challenge. Polyvinyl chloride (PVC) is widely used in cable sheathing and insulation due to its cost-effectiveness, durability, and inherent flame resistance. However, improving its fire-retardant properties without compromising other mechanical and electrical characteristics remains a crucial goal. This is where magnesium hydroxide (Mg(OH)?) comes into play as an excellent flame retardant and smoke suppressant.

Why Magnesium Hydroxide?

Magnesium hydroxide is a halogen-free flame retardant that decomposes at approximately 330°C, releasing water and absorbing heat. This endothermic reaction helps cool the material and slow down flame propagation. Compared to traditional halogen-based flame retardants, Mg(OH)? offers multiple advantages:

Eco-friendly and Non-toxic: Unlike brominated and chlorinated flame retardants, magnesium hydroxide does not release toxic gases when decomposed.

Effective Smoke Suppression: Reducing smoke emissions is critical in fire safety, and Mg(OH)? effectively minimizes smoke density.

Stable Thermal Performance: It decomposes at a higher temperature than aluminum hydroxide (ATH), making it more suitable for high-performance cable applications.

Application in PVC Cable Compounds

When incorporated into PVC cable materials, magnesium hydroxide enhances fire resistance while maintaining mechanical properties. Here’s how it benefits PVC cables:

Improved Fire Safety: Mg(OH)? slows down the combustion process and reduces heat release, providing valuable time for evacuation and fire suppression.

Long-Term Durability: It enhances the aging resistance of PVC, making cables more reliable in harsh environments.

Halogen-Free Solutions: Increasing demand for halogen-free, low-smoke flame retardants in industries like telecommunications, construction, and transportation makes Mg(OH)? an ideal choice.

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