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Key Properties of Magnesium Hydroxide Flame Retardants

2025-08-13

Magnesium hydroxide (Mg(OH)₂) is gaining traction as a green flame retardant, with unique properties making it ideal for diverse industries. Here are its core features:

Flame-retardant mechanism: Decomposes at 340–450°C, releasing water vapor and absorbing heat. This cools the material, dilutes oxygen, and forms a magnesium oxide barrier to block combustion.
Eco-friendliness: Contains no halogens, heavy metals, or toxic substances. Emits no harmful gases during use or disposal, meeting strict global environmental standards.
Smoke suppression: Reduces smoke density by neutralizing acidic gases (e.g., HCl) released during combustion, improving fire safety visibility.
Compatibility: Requires surface treatment (e.g., with silane coupling agents) to enhance dispersion in polymers like PP and PE, minimizing impact on material strength.

Widely used in plastics, cables, and rubber, it balances fire safety and sustainability, driving its market growth.

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