Comparison of ATH and high heat-resistant boehmite flame retardants
Aluminum hydroxide can cause serious eye irritation. Storage: Store in a cool, dry warehouse. Skin (eye) contact: Rinse with soap and plenty of water. Inhalation: Never feed anything out of your mouth to someone who has lost acuity. Gargle with water and consult a doctor.
Among many flame retardants, aluminum hydroxide has been widely used because it is rich in structural water, has the advantages of acid resistance, flame retardancy, 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. The high heat-resistant boehmite flame retardant solves the problem of product defects and reduced dielectric properties caused by low dehydration temperature of aluminum hydroxide.
High heat-resistant boehmite flame retardant (Boehmite, ALOOH) compared to aluminum hydroxide
Advantages: 1% dehydration temperature is above 350 ° C, dehydration reaches a peak value at 500 ° C, 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, Strong acid and alkali resistance.
Disadvantages: The flame retardancy is slightly lower than that of aluminum hydroxide, and more needs to be added to achieve the same flame retardant performance. 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 products.