Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/67357
Title: Adhesion improvement of a poly(tetrafluoroethylene)-copper laminate by thermal graft copolymerization
Authors: Zhang, J.
Cui, C.Q.
Lim, T.B.
Kang, E.N.-T. 
Neoh, K.G. 
Keywords: Adhesion
Copper
Graft copolymerization
Lamination
Plasma treatment
Poly(tetrafluoroethylene)
Issue Date: 1998
Source: Zhang, J.,Cui, C.Q.,Lim, T.B.,Kang, E.N.-T.,Neoh, K.G. (1998). Adhesion improvement of a poly(tetrafluoroethylene)-copper laminate by thermal graft copolymerization. Journal of Adhesion Science and Technology 12 (11) : 1205-1218. ScholarBank@NUS Repository.
Abstract: Poly(tetrafluoroethylene) (PTFE)-copper laminates were achieved by surface graft copolymerization of glycidyl methacrylate (GMA) on an argon plasma-pretreated PTFE film at elevated temperature with simultaneous lamination of a copper foil in the presence of an epoxy resin adhesive. The plasma pretreatment introduces peroxides which are thermally degraded into radicals to initiate the graft copolymerization of GMA on the PTFE surface. The graft copolymerization with concurrent lamination of copper was carried out in the complete absence of a polymerization initiator or system degassing. The modified surfaces and interfaces were characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The adhesion strength between the PTFE film and copper was assessed by the T-peel test method. The adhesion strength was affected by the plasma pretreatment time, as well as by the grafting and curing temperatures. The PTFE/GMA-epoxy resin/Cu assembly exhibits a significantly higher measured adhesion strength, compared with those of the PTFE/epoxy resin/Cu and PTFE/GMA/Cu assemblies. The PTFE/GMA-epoxy resin/Cu joint delaminated by cohesive failure inside the bulk of the PTFE film. This suggests that the enhanced adhesion between the graft-modified PTFE film and the copper surface is attributable to the formation of covalent bonds between the tethered GMA graft chains on PTFE and the epoxy resin network.
Source Title: Journal of Adhesion Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/67357
ISSN: 01694243
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

39
checked on Dec 8, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.