Copper-resistant PPR (polypropylene random copolymer) composite pipe

Abstract

The utility model relates to a copper-resistant PPR (pentatricopeptide repeats) composite pipe, and belongs to the technical field of PPR composite pipes. The composite pipe comprises an anti-copper layer, an adhesive layer, a reinforcing layer and a pressure-resistant layer which are sequentially arranged from inside to outside. An adhesive layer is arranged on the outer surface of the copper-resistant layer, the copper-resistant layer and the reinforcing layer are tightly connected through the adhesive layer, and meanwhile the free copper resistance of the composite pipe can be guaranteed in the long-term use process; the reinforcing layer can enhance the rigidity of the pipe, so that the strength and modulus of the pipe are improved, and the high-temperature resistance is enhanced; the pressure-resistant layer is arranged on the outer surface of the reinforcing layer and has excellent impact resistance; the reinforcing layer and the pressure-resistant layer both have the effect of protecting the copper-resistant layer, meanwhile, the production cost is reduced, and the competitive capacity of the composite pipe in the market is improved. Therefore, the PPR composite pipe has the capability of being used for a long time under the working condition of a hot water circulation system.

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