Surface modification of polytetrafluoroethylene for adhesive bonding

David, Elena; Lazăr, Alin; Armeanu, Adrian

doi:10.1016/j.jmatprotec.2004.09.045

Cited by 24 publications

(13 citation statements)

References 21 publications

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“…Physical methods based on mechanical abrasion are supposed to create an extended bonding area as they generate grooves and valleys, but cause a large damage to the treated specimens [12]. On the other hand, chemical treatments are typically used with the aim of modifying both morphology, by means of surface etching or grafting, and the chemical structure of polymers, but they present serious problems of environmental contamination, which have provoked the investigation on the industrial substitution of these processes [13].…”

Section: Introductionmentioning

confidence: 99%

Development of improved polypropylene adhesive bonding by abrasion and atmospheric plasma surface modifications

Encinas

Abenójar

Martı́nez

2012

International Journal of Adhesion and Adhesives

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Institutional RepositoryThis is a postprint version of the following published document: b s t r a c tThe present work deals with the problematic adhesive bonding of substrates with low surface energy. Different approaches have been explored with the aim of creating adequate adhesive joints based on polyolefinic substrate and polyurethane adhesive. The selected material under study was polypropy lene (PP) as adherend, and a commercial Sikaflex s 252 polyurethane one component based structural adhesive (PU) as joint fluid. Among the diverse pre treatments typically used to prepare surfaces prior to bonding, mechanical abrasion with emery paper of 80 grain size, the use of a chemical primer and atmospheric pressure air plasma torch (APPT) were the selected methods to facilitate the application of the PU by means of surface energy enhancement as well as to create a correct mechanical interlocking of the adherent adhesive interface. Changes in the wettability of the polymer were evaluated by contact angle measurements following the UNE EN 828:2010. Surface energy was calculated both in terms of Owens approximation and acid base considerations, leading to the possibility of determining a relationship between changes in surface energy and adhesion. Changes in the chemical composition of the surface were studied by X ray photoelectron spectroscopy (XPS), electron diffraction X Ray (EDX) probe and attenuated total multiple reflection mode infrared spectroscopy (ATR FTIR). Morphological modifications were investigated with scanning electron microscopy (SEM). Variations in the strength of single lap PP PP joints with the treatments were evaluated by lap shear tests following the UNE EN 1465:2008 standard. Experimental evidence supports the superiority of the APPT treatment to increase wettability and adhesion of polyolefinic surfaces, especially when combined with the use of a primer.

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Section: Introductionmentioning

confidence: 99%

Development of improved polypropylene adhesive bonding by abrasion and atmospheric plasma surface modifications

Encinas

Abenójar

Martı́nez

2012

International Journal of Adhesion and Adhesives

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show abstract

“…[7]. However, its applications are hampered in many cases because of its poor wettability and adhesion property with other materials [8,9].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of porous poly(tetrafluoraethylene) film by a simple chemical oxidation treatment

Wang

Suo

et al. 2010

Applied Surface Science

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“…This technique is simple, easy to implement, reliable, producing no pollution, and cost effective [1][2][3]. Many studies [1,4,5] have been reported on surface modification of polymers by plasma-based techniques making use of different discharge powers and process gases.…”

Section: Introductionmentioning

confidence: 99%

“…Surface layers are ablated and polymer surface properties are changed dramatically [6,10]. In recent works [1][2][3][4][5][7][8][9]11] the polymer modification by remote plasma has been studied. The interaction of glow (diode) plasma with polymers and the effects of the plasma treatment on grafting of polymer surfaces with different agents or coating them with metal films have been studied, e.g.…”

Section: Introductionmentioning

confidence: 99%

Comparison of glow argon plasma-induced surface changes of thermoplastic polymers

Řezníčková

Kolská

Hnatowicz

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

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Surface modification of polytetrafluoroethylene for adhesive bonding

Cited by 24 publications

References 21 publications

Development of improved polypropylene adhesive bonding by abrasion and atmospheric plasma surface modifications

Development of improved polypropylene adhesive bonding by abrasion and atmospheric plasma surface modifications

Surface modification of porous poly(tetrafluoraethylene) film by a simple chemical oxidation treatment

Comparison of glow argon plasma-induced surface changes of thermoplastic polymers

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