The halogen-free flame retardant mainly includes nitrogen-based, phosphorus-based compounds and metal hydroxides, and also includes a nitrogen-phosphorus expansion system and a graphite expansion system. Compounds of this type, which are non-volatile during combustion and do not produce corrosive gases, are called pollution-free flame retardants and are a development trend.
However, the general halogen-free flame retardant addition amount is relatively large, the cost is high, and the physical properties are affected. In order to reduce the addition amount, optimize the physical properties, and improve the flame retardant effect, the researchers utilize the emerging nanotechnology and capsule coating technology. , surface treatment technology and compound synergy mechanism research and development of flame retardant synergists.
Under the combined use of flame retardant synergist, the amount of halogen-free flame retardant can be greatly reduced, the flame retardant performance can be improved, and the influence on physical properties can be reduced. It has good compatibility with resin, less added amount and high flame retardant efficiency. The flame retardant synergist meets the latest ROHS environmental protection requirements, and cooperates with the main role of the halogen-free flame retardant to coordinate the physical properties and improve the flame retardant effect in the entire flame retardant system.www.china-zhufengchem.com