• 11 19 ，2024Mar 17, 2023
• pingsen

Magnesium Hydroxide: An Effective Inorganic Flame Retardant for Polymer-Based Composites

Magnesium Hydroxide: An Inorganic Flame Retardant Filler with Promising Applications in Polymer-Based Composite Materials

Magnesium hydroxide is an inorganic flame retardant filler that shows excellent application potential in polymer-based composite materials. Similar to aluminum hydroxide, magnesium hydroxide acts as a flame retardant by absorbing heat and releasing water through chemical decomposition during heating. This process confers several advantages, including non-toxicity, low smoke generation, stable chemical properties of the decomposed magnesium oxide, and the absence of secondary pollution.

However, compared to halogenated organic flame retardants, achieving a significant flame retardant effect with magnesium hydroxide typically requires a high filling amount, often exceeding 50%. Due to its inorganic nature, magnesium hydroxide has poor surface compatibility with polymer-based materials. Without proper surface modification, such a high filling amount can lead to a decrease in the mechanical properties of the composite material.

To address this issue, surface modification treatment is necessary to improve the compatibility of magnesium hydroxide with polymer-based materials. This treatment ensures that the mechanical properties of the filled material do not degrade and can even enhance some of the mechanical properties of the material.

Summary

Advantages: Non-toxic, low smoke, stable chemical properties of decomposed magnesium oxide, no secondary pollution.

Challenges: Requires high filling amounts (over 50%) to achieve significant flame retardancy.

Solution: Surface modification to improve compatibility with polymer-based materials, maintaining or enhancing mechanical properties.

By addressing these challenges, magnesium hydroxide can become a valuable and effective flame retardant in polymer-based composite materials.

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