Preparation of modified magnesium hydroxide flame retardant by vapor phase hydration method: innovative technology and application

As an efficient halogen-free flame retardant, magnesium hydroxide plays an important role in improving material safety. The preparation of modified magnesium hydroxide by gas phase hydration has brought innovation to the traditional liquid phase chemical method and provided a more efficient and environmentally friendly preparation method.

Preparation method of gas phase hydration

Basic principle: At high temperature, water vapor reacts with light-burned magnesium to generate magnesium hydroxide, and a surface modifier is introduced to achieve one-step modification.

Main steps:

Select light-burned magnesium raw materials.

Add modifiers such as fatty acids during gas phase hydration.

Control reaction conditions to promote the formation of magnesium hydroxide.

Collect modified magnesium hydroxide and perform post-treatment such as drying and crushing.

Role of modifier

Improve compatibility: Improve the compatibility of magnesium hydroxide with polymer matrix.

Improve dispersibility: Increase the dispersibility of magnesium hydroxide in polymers and improve the performance of composite materials.

Flame retardant properties

Flame retardant mechanism of magnesium hydroxide:

Decomposition absorbs heat and reduces temperature.

Form a surface carbonization layer to prevent oxygen from entering.

Reduce the thermal energy absorption of polymer substrates.

Effect of surface modification on flame retardant effect:

Improve mechanical properties.

Improve smoke suppression.

Enhance compatibility and dispersibility.

Research progress

Application of new modifiers: Explore new surface modifiers to improve the performance of magnesium hydroxide.

Optimization of composite material performance: Study the synergistic effect of magnesium hydroxide and other additives.

In-depth understanding of flame retardant mechanism: Through experimental and theoretical research, the flame retardant mechanism of magnesium hydroxide is deeply explored.

The modified magnesium hydroxide flame retardant prepared by gas phase hydration method shows broad application prospects with its simplified production process and excellent flame retardant performance. With the continuous advancement of technology, this environmentally friendly flame retardant is expected to play an important role in many industries and improve the safety and environmental protection of materials.