Aluminum hydroxide accelerant is not limited to dehydration temperature
Among many flame retardants, aluminum hydroxide has been widely used due to its rich structure of water, acid resistance, flame retardant, smoke suppression, good filling effect, no secondary pollution after combustion, and low cost. However, ordinary aluminum hydroxide starts to dehydrate from 200 ° C, and is completely dehydrated from 330 ° C to 350 ° C, while the curing of thermoplastic resins is mostly within the dehydration temperature range of aluminum hydroxide, which leads to foaming in the finished synthetic resin, uneven surface and low yield.
1% dehydration temperature above 350 ° C, 500 ° C dehydration reaches a peak, EC < 50 μS/cm, strong dielectric properties, solves the problem of product defects and reduced dielectric properties caused by low dehydration temperature of aluminum hydroxide, acid and alkali resistance Strong.
The flame retardancy is slightly lower than that of aluminum hydroxide, and more needs to be added to achieve the same flame retardancy. But its biggest feature is high heat resistance, both thermal conductivity and acid and alkali resistance. Making high heat resistance functional materials can improve the added value of the product. The high heat resistance boehmite flame retardant solves the problem of product defects and reduced dielectric properties caused by low dehydration temperature of aluminum hydroxide. (jwl)