Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0143-7496(99)00037-8
Title: Thermal graft copolymerization-induced adhesion improvement of a FR-4/PETG laminate
Authors: Zhang, Y. 
Tan, K.L. 
Zhang, J.
Cui, C.Q.
Lim, T.B.
Kang, E.T. 
Issue Date: 1-Apr-2000
Source: Zhang, Y., Tan, K.L., Zhang, J., Cui, C.Q., Lim, T.B., Kang, E.T. (2000-04-01). Thermal graft copolymerization-induced adhesion improvement of a FR-4/PETG laminate. International Journal of Adhesion and Adhesives 20 (2) : 165-171. ScholarBank@NUS Repository. https://doi.org/10.1016/S0143-7496(99)00037-8
Abstract: The lamination of a glass fibre-reinforced and epoxy-based printed circuit board (PCB) substrate, FR-4, to an amorphous thermoplastic copolyester of dimethyl terephthalate with ethylene glycol and 1,4-cyclohexanedimethanol, PETG, was studied. The lamination was achieved by the simultaneous surface graft copolymerization of glycidyl methacrylate (GMA) on the argon plasma-pretreated FR-4 substrate and PETG film at an elevated temperature. The plasma-treated surfaces and the delaminated surfaces were characterized by X-ray photoelectron spectroscopy (XPS). The adhesion strength between the FR-4 substrate and the PETG film was assessed by the T-peel test method. The adhesion strength was affected by the plasma pretreatment time of the substrates, the lamination time, and the lamination temperature. The FR-4/GMA/PETG assembly from the simultaneous graft copolymerization with GMA and lamination exhibited a significantly more rapid lamination rate and a higher adhesion strength than those of the FR-4/epoxy/PETG assembly from the epoxy adhesive-induced lamination of the plasma-pretreated FR-4 and PETG films. The phenomena are consistent with the presence of covalently bonded GMA graft chains on the surfaces of plasma-pretreated PETG and FR-4 films in the former assembly. The FR-4/GMA/PETG assembly failed by a combined cohesive and adhesional mechanism.
Source Title: International Journal of Adhesion and Adhesives
URI: http://scholarbank.nus.edu.sg/handle/10635/66879
ISSN: 01437496
DOI: 10.1016/S0143-7496(99)00037-8
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