Aluminum Hydroxide Flame Retardant Modification and Coating

The flame retardant market is developing towards high flame retardancy, low smoke, and harmlessness, and inorganic flame retardants are particularly prominent in these three aspects compared to traditional flame retardants. Ultrafine aluminum hydroxide is currently the mainstream inorganic flame retardant.

When ultrafine aluminum hydroxide burns, it does not produce secondary pollution. It absorbs a large amount of heat while releasing crystalline water. Nano-aluminum hydroxide not only enhances the flame retardant performance of polymers but also helps improve the mechanical and electrical properties of polymers, enhancing their resistance to leakage, arc resistance, and wear resistance. However, like other ultrafine powders, aluminum hydroxide also has common issues. Firstly, it tends to aggregate during storage and transportation. Secondly, when added to organic substrates as an inorganic additive, its dispersion is poor, leading to agglomeration. This inevitably affects the performance of end products such as wires and cables.

How can the uneven dispersion of aluminum hydroxide in organic substrates be solved? The answer is particle modification and coating. The powder of aluminum hydroxide is coated, allowing its surface to react with a silane coupling agent, forming new functional groups. This changes the inorganic properties of aluminum hydroxide itself. After surface coating, the aluminum hydroxide powder, when added to organic substrates, can disperse better due to the presence of organic functional groups on its surface, simultaneously enhancing the bonding force with the substrate. This improves the mechanical strength of downstream products.

TungKuLa particle surface modification coating machine T-MIX focuses on the modification of aluminum hydroxide. It is a customized T-MIX for aluminum hydroxide powder, which uses the method of adding modification agent through atomization, effectively avoiding the unevenness issues in traditional solid-liquid mixing modification, and increasing the modification coating rate of aluminum hydroxide to over 99%.