Relaxation behavior of polyethylene welded joints.

Authors :: Demchenko V
Iurzhenko M
Shadrin A
Galchun A
Source :: Nanoscale research letters [Nanoscale Res Lett] 2017 Dec; Vol. 12 (1), pp. 280. Date of Electronic Publication: 2017 Apr 18.
Publication Year :: 2017
Abstract: The paper presents results of the investigation of structure relaxation and thermal properties of PE-80 and PE-100 polyethylene hot-tool butt welds. It was found that a weld with the re-crystallized crystalline structure is formed during the welding of dissimilar types of polyethylene. It is shown that within a long period (1 year) the relaxation occurs not only in amorphous but also in the crystalline phase (crystalline α-form transforms into mixed αβ-form), with respective changes in polyethylene properties.