Hydrothermal modification technology of active magnesium hydroxide and its application in polymer materials

As an important inorganic compound, active magnesium hydroxide can significantly improve its application performance in polymer materials through hydrothermal modification technology, especially in terms of improving dispersion and interfacial compatibility. The following are the detailed steps for preparing active magnesium hydroxide through hydrothermal modification:

1. Raw material preparation: Select high-purity magnesium hydroxide as the raw material, and prepare surface modifiers, catalysts, etc. as needed to promote the subsequent modification process.

2. Solution preparation: Carefully adjust the pH value, temperature and concentration of the aqueous solution containing the modifier to create optimal conditions for the hydrothermal reaction.

3. Hydrothermal reaction: The magnesium hydroxide raw material and solution are loaded into a hydrothermal reactor and heated in a high temperature and high pressure environment to cause the magnesium hydroxide particles to recrystallize and adjust their morphology under specific conditions.

4. Post-treatment: After the reaction is completed, take out the sample and wash, filter, centrifuge and dry it to obtain pure modified magnesium hydroxide powder.

5. Performance characterization and testing: Use advanced analytical technologies such as SEM, XRD, BET, and FTIR to comprehensively evaluate the morphology, crystal phase, specific surface area, and chemical structure of modified magnesium hydroxide.

6. Application verification: The modified magnesium hydroxide is applied to polymer materials, and composite materials are prepared through melt blending and molding processes. The dispersibility, mechanical properties and flame retardant properties are tested.

Hydrothermal modification technology provides an effective means for particle size control, morphology optimization and surface property adjustment of active magnesium hydroxide, which significantly improves its dispersion and compatibility in polymers. The application of this technology provides strong support for the development of polymer composite materials with high flame retardancy, excellent processability and mechanical properties. Magnesium hydroxide obtained through hydrothermal modification is particularly suitable for the preparation of high-performance composite materials and shows broad application prospects.