UR Stabilizer

Thermoplastic materials are susceptible to ultraviolet (UV) degradation upon prolonged exposure to sunlight. Evidence of such degradation could be observed as a color change. The rate at which degradation may occur varies based on the availability of air, water, oxygen and other oxidizing agents.
Since UV degradation is a surface phenomenon the most efficient means of prolonging the integrity of the reinforcement it to place a resin-rich protective layer on the surface of the pipe. On account of this, fusion UV pipes are over-wrapped with an organic barrier layer to provide even greater UV resistance.
The use of black pigment in fusion UV pipes will improve weathering characteristics by helping to screen out the ultraviolet light. Pigments are incorporated into the resin system to act as a further barrier to UV penetration into the laminate.