Study on Preparation and Properties of Intumescent Flame Retardant/PE

The polyethylene(PE)is widely used in many industries such as electron, electrical equipment, chemical engineering and machinery.The phenomenon of dropping will occur when PE is burning, and this will make other combustibles burn, which will accelerate the extending of fire.The flame retardant treatment on PE is made in order to meet the requirements of fire prevention and environmental safety. The cage bicyclic phosphate1-oxo-4-hydroxymethyl- 2,6,7-trioxa-1-phospha-bicyclo[2.2.2]octane(PEPA)is synthesized firstly. And the intumescent flame retardant is doped in PE uniformly, and the intumescent flame retardant/PE system is formed. Then, the effect of PEPA content on the flame retardance of PE is studied. The results show that the tensile strength decreases with the rising content of PEPA and the grade of flame retardance reaches FV-0.