Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1001524
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dc.contributor.authorCustódio, J.pt_BR
dc.contributor.authorBroughton, J.pt_BR
dc.date.accessioned2011-01-12T12:30:25Zpt_BR
dc.date.accessioned2014-10-20T15:58:35Zpt_BR
dc.date.accessioned2017-04-13T08:54:49Z-
dc.date.available2011-01-12T12:30:25Zpt_BR
dc.date.available2014-10-20T15:58:35Zpt_BR
dc.date.available2017-04-13T08:54:49Z-
dc.date.issued2010pt_BR
dc.identifier.urihttps://repositorio.lnec.pt/jspui/handle/123456789/1001524-
dc.description.abstractLong-term durability of a structural adhesive joint is an important requirement, as it has to be able to support the required design loads, under service conditions, for the planed life time of the structure. One way of improving bond durability is through the use of surface treatments prior to bonding. In this study, the effects of four surface pre-treatments on three timbers were evaluated quantitatively through contact angle measurements and shear tests. The wettability tests showed that both flame and corona techniques increased the timber’s surface free energy, with the corona leading to the greater increase, resting largely in its polar component. This treatment also tended to be less species specific, less susceptible to variation, and tended to last the longest. The shear tests, which are still ongoing, showed nevertheless that, in some cases surface activation, by itself, may not be sufficient to produce durable joints. Thus in such situations, it is also necessary to dimensionally stabilize the bond line, so as to enable it to cope with the timber dimensional variations originating from moisture ingress/egress.pt_BR
dc.language.isoengpt_BR
dc.rightsopenAccesspt_BR
dc.subjectSurface treatmentspt_BR
dc.subjectAdhesion promoterspt_BR
dc.subjectSurface free energypt_BR
dc.subjectDurabilitypt_BR
dc.titleTimber adhesion promotion techniques for solid timber substratespt_BR
dc.typeconferenceObjectpt_BR
dc.identifier.seminarioSociety for Adhesion and Adhesives/British Adhesives and Sealants Association Conference on Surface Preparation for Adhesives and Sealants Technologypt_BR
dc.identifier.localSociety of Chemical Industry, London, United Kingdompt_BR
dc.description.sectorDM/NBpt_BR
dc.description.year2010pt_BR
dc.description.data9 de Dezembropt_BR
Appears in Collections:DM/NMC - Comunicações a congressos e artigos de revista

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