Hydrotalcite halogen-free flame retardants have the following characteristics:
High-efficiency flame retardant performance: Hydrotalcite halogen-free flame retardants have excellent flame retardant effects and can meet the UL94 V0 flame retardant standard, effectively suppressing the spread of flames. When it is heated and decomposed, it releases a large amount of water and carbon dioxide and absorbs a lot of heat, reducing the temperature of the combustion system. The water vapor and carbon dioxide gas released during decomposition can dilute and block flammable gases, thereby preventing the continuous progress of combustion.
Environmentally friendly and non-toxic: Hydrotalc is a halogen-free and non-toxic white compound. When it thermally decomposes, it releases non-toxic and non-corrosive water vapor and carbon dioxide gas, meeting environmental protection requirements. The amount of toxic and corrosive gases and smoke produced during combustion is extremely small.
Good smoke suppression and smoke elimination effect: The solid products after the decomposition of hydrotalc particles have a large specific surface area and strong alkalinity, which can promptly absorb the acidic gases and smoke released during the thermal decomposition of the material and convert them into corresponding compounds, thereby playing a role in smoke suppression and smoke elimination. Its smoke suppression effect is remarkable and can increase the smoke suppression rate by 4% to 5%.
Excellent thermal stability: The thermal decomposition temperature range of hydrotalcite is approximately between 190℃ and 460℃, with high thermal stability, making it suitable for high-temperature processing environments.
Good compatibility: Hydrotalcite has high fineness (such as 2000 mesh), uniform dispersion, and good compatibility with plastic substrates. It is not easy to precipitate or seep out, which can significantly improve the flame retardant performance of plastic products while maintaining excellent mechanical and processing properties.
Abundant raw material sources: In China, the reserves of raw materials such as magnesium and aluminum sources used for the artificial preparation of magnesium-aluminum hydrotalcite are very rich, and the synthetic price is low, with a high cost performance.
Versatility: Hydrotalcite not only has flame-retardant properties but can also be used as a multi-functional filler and modifier for stabilizing, insulating, coloring, and UV resistance of high molecular materials such as plastics, rubber, and chemical fibers.
