Modified PPR low-temperature-resistant pipeline and preparation method thereof

The invention discloses a modified PPR low-temperature-resistant pipeline, the modified PPR low-temperature-resistant pipeline comprises a pipe body inner layer, a modified PPR middle layer and a pipe body outer layer which are co-extruded in sequence from inside to outside, and the modified PPR middle layer is prepared from random copolymer PPR, nano calcium carbonate, barium glass powder, talcum powder, a coupling agent, a nucleating agent TMB and absolute ethyl alcohol. The inner layer of the pipe body is made of a PEEK resin composite material, and the antibacterial layer is prepared from nano-silver and zeolite powder; the preparation method comprises the following steps: feeding raw materials of the antibacterial layer, the pipe body inner layer, the modified PPR middle layer and the pipe body outer layer of the modified PPR low-temperature-resistant pipeline into respective feeding machines in proportion; quantitatively feeding into different extruders for melting and plasticizing; and then forming a p