公开(公告)号：US20230021128A1

公开(公告)日：2023-01-19

申请号：US17782898

申请日：2020-12-09

Applicant: BASF SE

Inventor： YingHao Liu ,  Stefan Bokern ,  Xuyuan Peng-Poehler ,  Li Ping Wang ,  Yuan Yan Gu ,  Dong Liang ,  Yuan Fang

IPC: C09J175/08 ,  B32B7/12 ,  B32B1/08 ,  B32B15/01 ,  F16B11/00 ,  F16L13/10

Abstract: Described herein is a method for joining a first metal pipe with a second metal pipe, the pipes being joined together in an overlapping area by use of a two-component polyurethane adhesive that encapsulates the overlapping area, where the method includes the steps of:
(1) applying the two-component polyurethane adhesive onto an inner surface of a fixture; (2) inserting one end of the first metal pipe into one end of the second metal pipe so as to form a pipe assembly having the overlapping area between the two ends, and putting the overlapping area of the pipe assembly into the fixture; (3) closing the fixture such that the overlapping area of the pipe assembly is fixed in the fixture, and such that the adhesive therein encapsulates the overlapping area of the pipe assembly; (4) curing the two-component polyurethane adhesive; and (5) optionally, removing the fixture from the pipe assembly.