Study on modification of nano-brucite powder by new polyacrylate emulsion: Promoting innovation of environmentally friendly flame retardant and reinforced materials

At the forefront of contemporary materials science research, the deep integration of nanotechnology and polymer science continues to drive the boundaries of new material properties. Brucite powder (natural magnesium hydroxide, Mg(OH)2), as an environmentally friendly inorganic flame retardant originating from nature, has become a research topic in the field of materials science due to its excellent flame retardant effect and low smoke release characteristics. Hotspot. However, nanoscale brucite powder is prone to agglomeration due to its high specific surface area, which limits its effective dispersion and maximization of flame retardant performance in polymer composites. In view of this, the surface modification strategy using new polyacrylate emulsions has become an important means to improve the application performance of brucite powder and broaden its application fields.

Research background and objectives:

This study focuses on using the latest developed polyacrylate emulsion to modify the surface of nano-brucite powder, aiming to solve the dispersion problem in polymer materials and enhance the interaction with the matrix. At the same time, it deeply explores the flame retardant enhancement effect of modified nano-brucite powder in polymer composites such as polyolefins and its improvement on the mechanical properties of materials, aiming to develop green composite materials with both excellent flame retardant and mechanical properties.

Research methods and technical paths:

1. Design and synthesis of polyacrylate emulsion: Using advanced emulsion polymerization technology, polyacrylate emulsion containing specific functional groups is designed and synthesized to achieve effective modification and coating of the surface of nano-brucite powder.

2. Surface modification of brucite powder: through detailed characterization analysis, including Zeta potential measurement, contact angle measurement, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and transmission electron microscope (TEM), etc. Verify the structural changes and modification effect of nano-brucite powder before and after modification.

3. Preparation and performance evaluation of composite materials: Mix the modified nano-brucite powder into a matrix such as polyolefin, evaluate its flame retardant properties through oxygen index testing (LOI), and conduct tensile, bending and impact tests. Evaluate the comprehensive mechanical properties of composite materials.

Expected research results and significance:

The expected results show that the new polyacrylate emulsion successfully modified the surface of nano-brucite powder, significantly improved its uniformity of dispersion in polymer composite materials, effectively enhanced the flame retardant effect, and improved the oxygen index. At the same time, the negative impact on the mechanical properties of the base material is minimized. In addition, through detailed characterization work, the modification mechanism was clarified, providing a theoretical basis for subsequent performance optimization.

This research not only has a direct driving effect on the development of high-performance, environmentally friendly flame-retardant composite materials, but also has far-reaching significance for exploring the high-value utilization path of natural mineral resources and responding to the sustainable development strategy. Future research directions will focus on optimizing modification process parameters, expanding to a wider range of polymer systems, and in-depth exploration of the application potential of modified brucite powder in special environments.