Surface modification of brucite powder and surface energy calculation: key technologies for improving the performance of polymer fillers

As a multifunctional material, brucite powder has broad application prospects in the fields of polymer fillers. However, due to its high surface polarity, it has poor compatibility with non-polar or weakly polar polymer substrates, so it is necessary to improve its application performance through surface modification. This article will discuss the surface modification technology of brucite powder, the method for calculating surface energy, and the application effect after modification.

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1. Necessity of surface modification The surface modification of brucite powder is to reduce its surface energy and enhance its lipophilicity and hydrophobicity, so as to achieve better dispersion and interfacial bonding in non-polar or weakly polar polymer matrices. This process is crucial to improving the overall performance of composite materials.

2. Diversity of modification methods There are various methods for surface modification, including coating, grafting modification, coupling agent treatment, etc. The use of modifiers such as silane coupling agent, titanate coupling agent or organosilicon can form an organic coating layer on the surface of brucite, effectively changing its surface properties.

3. The importance of surface energy measurement The measurement of surface energy is the key to evaluating the modification effect. Methods such as contact angle measurement, infiltration method, and atomic force microscope (AFM) force curve analysis provide effective ways to indirectly estimate the surface free energy of powders and their components.

4. Significant improvement in application effects After surface modification, the application performance of brucite powder in flame retardant materials, polymer composite materials, coatings, rubber and other fields has been significantly improved. The modified powder not only enhances the flame retardant performance, but also improves the mechanical properties and processing properties of the material.

5. Continuous deepening of research progress With the development of nanotechnology and materials science, the research on surface modification of brucite powder is moving towards a more refined direction. Researchers are constantly exploring new modifiers and more efficient modification processes to achieve the optimization of performance adjustment and cost-effectiveness.

The surface modification of brucite powder and the accurate measurement of surface energy are crucial to its application performance in many fields. With the deepening of research, this technology is expected to bring new breakthroughs in the field of materials science and promote the development of related industries.