PPR (pentatricopeptide repeats) pipe with chlorine resistance as well as preparation method and application thereof

The invention discloses a PPR pipe with chlorine resistance and a preparation method and application thereof, and relates to the technical field of plastic pipes. The polypropylene random copolymer comprises the following components in parts by weight: 85-95 parts of polypropylene random copolymer, 5-15 parts of an anti-chlorine polymer, 0.05-1 part of an antioxidant and 0.5-2 parts of a lubricant, the anti-chlorine polymer is grafted copolymer sodium styrylsulfonate modified polypropylene. A grafted copolymer sodium styrylsulfonate modified polypropylene is added as an anti-chlorine polymer, on one hand, a benzene ring structure is introduced to increase steric hindrance, attack of active chlorine to a polypropylene molecular chain is reduced, and the polypropylene is effectively blocked and protected; on the other hand,-SO3Na serves as an electron withdrawing group, the activity of aromatic rings is reduced, the aromatic rings are prevented from being substituted by active chlorine, the ...