Layer-by-layer assembly of brucite-based magnesium hydroxide: a new breakthrough in the flame retardant properties of EVA materials
In the current context of increasingly stringent requirements for environmental protection and safety performance, EVA (ethylene-vinyl acetate copolymer), as a multi-purpose polymer material, its flame retardant modification has become a hot spot in research. Brucite-based magnesium hydroxide, as a new environmentally friendly halogen-free solid flame retardant, has attracted widespread attention due to its excellent smoke suppression function and application prospects in organic polymers.
Innovative preparation of brucite-based magnesium hydroxide flame retardant
The layer-by-layer assembly method is an advanced preparation technology. By coating polyphosphoric acid and dodecaamine on the surface of brucite layer by layer, and further compounding it with silicon-containing micro-nano reinforced materials, it prepares a product with excellent mechanical properties and flame retardant properties. Obtained significantly improved brucite-based composite flame retardant materials. This method not only improves the compatibility between brucite and polymers, but also reduces the amount of addition, thereby improving the overall performance of the material.
The improvement effect of surface modification technology
The application of surface modification technology, such as the preparation of melamine resin microencapsulated composite flame retardants, can significantly improve the compatibility of brucite-based magnesium hydroxide and EVA. This modification method not only improves the flame retardant efficiency, but also improves the processing performance and mechanical properties of the material. Experimental results show that adding modified brucite-based magnesium hydroxide flame retardant to EVA can significantly increase the oxygen index and limiting oxygen index of the material, while improving the mechanical properties of the material.
Application advantages of brucite-based magnesium hydroxide in EVA
EVA material has a low oxygen index and is extremely easy to burn. By adding brucite-based magnesium hydroxide flame retardant, the flame retardant properties of EVA can be effectively improved. Research shows that when modified brucite-based magnesium hydroxide is applied to EVA, it can significantly increase its oxygen index and limiting oxygen index, while improving the material's mechanical properties, such as tensile strength and elongation at break.
The brucite-based magnesium hydroxide flame retardant prepared by the layer-by-layer assembly method and its surface modification technology provide an efficient and environmentally friendly solution for the flame retardant modification of EVA materials. The application of these technologies can not only improve the flame retardant properties of materials, but also improve the mechanical properties and processing properties of materials, providing a new direction for the development of halogen-free flame retardants. As the demand for environmentally friendly flame retardant materials continues to grow, the application prospects of brucite-based magnesium hydroxide flame retardants in EVA materials will be broader, providing new possibilities for safer and more environmentally friendly material applications.