Mechanical behaviour of adhesively bonded polyethylene tapping tees

Barton, Lewis and Birkett, Martin (2016) Mechanical behaviour of adhesively bonded polyethylene tapping tees. International Journal of Adhesion & Adhesives, 66. pp. 1-8. ISSN 0143-7496

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Official URL: http://dx.doi.org/10.1016/j.ijadhadh.2015.12.002

Abstract

The mechanical properties of adhesively bonded MDPE joints were studied. The lap-shear joints were prepared using PE80 polyethylene gas pipe and four adhesive types; two acrylic and two epoxy resins. The key mechanical properties of lap shear strength and impact resistance were investigated as a function of adhesive type and surface preparation technique. Mechanical abrasion of the PE80 surface increased the strength of the bonds from 40 to 460% for the four adhesives, with the best performing acrylic adhesive having a lap-shear strength of 1.76 MPa and impact strength of 2.5 kJ/m2. When used to bond PE80 tapping tees to PE80 gas pipe, the acrylic adhesive produced a gas tight seal at both the standard test pressure of 0.4 MPa and at an increased pressure of 0.8 MPa, and outperformed the PE80 tapping tee during shear testing and withstood a maximum of 10 cycles of 175 J during impact testing. These results highlight the potential of adhesive bonding as a method of joining PE80 tapping tees to PE80 gas pipe.

Item Type: Article
Uncontrolled Keywords: Adhesively bonded joint; Mechanical properties; PE80 pipe; Electrofusion welding
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Martin Birkett
Date Deposited: 16 Dec 2015 16:41
Last Modified: 09 May 2017 16:41
URI: http://nrl.northumbria.ac.uk/id/eprint/25050

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