Ammonium polyphosphate (Phase II) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.
USE:
-Fiber materials( paper, wood, fireproof textile);
-All kinds of polymers ( sunproof, waterproof, or fireproof);
-Fire-refractory building board, coiled material;
-Epoxy resin and unsaturated resin;
-Cable and rubber;
-Plastic material of electron device;
-Textile;
Packing : 25kg woven bag with plastic liner.