| 摘要 |
The present invention pertains to a process for lining a metal pipeline, said process comprising the following steps: (i) processing a thermoplastic polymer composition thereby providing a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic polymer composition comprising, preferably consisting of: - at least one poly(aryl ether ketone) polymer [(PAEK) polymer], - at least one poly(phenylene sulfone) polymer [(PPSU) polymer], - optionally, at least one poly(arylene sulfide) [(PAS) polymer], and - optionally, at least one plasticizer; (ii) deforming said pipe liner thereby providing a deformed pipe liner having an outer diameter smaller than the inner diameter of said metal pipeline; (iii) inserting the deformed pipe liner in said metal pipeline; and (iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline. The present invention also relates to a pipeline system comprising at least two coaxial pipes, an outer metal pipeline and inner pipe comprising at least one layer comprising, preferably made of, said thermoplastic polymer composition. |
