Red phosphorus flame retardants are a kind of non-halogen flame retardants, but also the more popular types of flame retardants. Just add a small amount of material can achieve the desired flame retardant function. General red phosphorus will easily absorb the moisture to destroy the internal structure, and poor compatibility with the polymer material, but also prone to spontaneous combustion phenomenon, can not be put into the actual production. The special treatment of microencapsulated red phosphorus flame retardants, so that the red phosphorus has become less flexible, the compatibility is also more ideal, containing about 85% of red phosphorus, but still prone to spontaneous combustion.

Red phosphorus masterbatch is red phosphorus and aluminum hydroxide, expandable graphite and other inorganic flame retardants compound matrix resin as a carrier of dark red particles, its safety is relatively high, almost no smoke during combustion, flame retardant efficiency Higher. No dust pollution, easy processing. Low density, good thermal stability, will not adversely affect product performance. No frost during processing, no migration, no corrosion of molds. In particular, products with high resistance to tracking marks (CTI), the obvious advantages in the electrical and electronic applications.

The weakness of red phosphorus masterbatch is more monotonous color, usually only dark red, black two, which also makes it in use there are some limitations. Red phosphorus masterbatch for general plastics, rubber, polyethylene, polypropylene and other oxygen-deficient materials, flame retardant, preferably with magnesium hydroxide, aluminum hydroxide used in combination; for PET, PC, PBT, PA, etc. Flame retardant oxygen-rich materials, can be used alone; in the process, in order to achieve the best red phosphorus dispersion, you can compound a certain amount of dispersant.