Plastic and other polymer materials in the combustion of the same time will produce a large number of smoke, gas, resulting in fire“Secondary pollution.”. “Secondary pollution” will bring difficulties to extinguish the fire, and cause greater harm to the people at the scene of the fire. Therefore, it is necessary to add flame retardants and other flame retardant smoke suppression or smoke suppression in polymer materials. With the development of sustainable development strategy, the addition of low-smoke halogen-free flame retardants can not only effectively improve the flame retardancy of materials, but also reduce smoke and toxic gas emissions. Among them, Magnesium hydroxide (Mg (OH)2) is the first choice of inorganic low-smoke halogen-free flame retardants.
In general, Magnesium hydroxide (Mg (OH)2) is used only as a flame retardant. However, the improvement of product performance requirements, the requirements for flame retardant is higher, especially some special professional, so only adding a flame retardant than certain can be very good to meet the requirements of flame retardant performance. Therefore, it is necessary to strengthen the compounding and synergism of Magnesium hydroxide flame retardants so as to make them play a better role in flame retardancy.
The surface activation and coating of inorganic flame retardants are better, and their compatibility with polymer is also improved, but their mechanical properties are still not ideal, and then affect the use of inorganic flame retardants in polymers. Therefore, it is a new technology to use polymer compatibilizer to treat the surface of endless flame retardant powder.
After the activation and modification of the Magnesium hydroxide with a polymer coupling agent, the adhesion between the powder and the PA6 matrix is enhanced, and the phenomenon of stress concentration due to the weak cohesion can be largely avoided, to ensure that the composite material to obtain better comprehensive performance. The PA6-based flame-retardant composites prepared by GT-AMH active magnesium-based flame retardant were activated by composite treatment agent and filled with PA6.
The flame-retardant mechanism of Magnesium hydroxide can improve the preparation process and increase the benefit. The Magnesium hydroxide can not only be used in combination with Aluminum hydroxide to improve the flame retardancy, but also can be used in combination with other flame retardants, such as phosphorus, silicon, boron, nitrogen, etc. .