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dc.contributor.authorTuovinen, Jani
dc.contributor.authorSalstela, Janne
dc.contributor.authorKarim, Md Rezaul
dc.contributor.authorKoistinen, Arto
dc.contributor.authorSuvanto, Mika
dc.contributor.authorPakkanen, Tuula T
dc.date.accessioned2019-10-29T12:35:09Z
dc.date.available2019-10-29T12:35:09Z
dc.date.issued2019
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/7802
dc.description.abstractThe main target in this study was to increase adhesion of unsaturated polyester (UP) adhesive to aluminum by structuring the aluminum surface on the microscale and nanoscale as well as by functionalizing the surface with 3-methacryloxypropyltrimethoxysilane. The micrometer-level surface structures were produced with micro-mesh printing and sandblasting techniques, while a nanoscale pseudoboehmite surface structure was obtained with a boiling water treatment. These modifications were combined to form different hierarchical surface structures. The adhesion strength of polyester to aluminum was assessed with a tensile-shear test. The micro-mesh printed pattern increased the tensile-shear strength of the joint from 2.3 MPa to 5.8 MPa, while the micro-micro-hierarchical joint specimen possessed a high shear strength of 14.5 MPa. Further, adhesion of UP adhesive with three-level hierarchical micro-micro-nanostructured specimens increased so high that the joints started to deform plastically during the shear strength measurement, preventing the evaluation of their maximum strength. The silane-treated specimens also displayed significantly higher shear strengths and a more cohesive failure than the corresponding untreated specimens. Silanization was also observed to improve interaction of the UP adhesive with the aluminum nanostructure. The results demonstrate that adhesion of polyester to aluminum can be significantly enhanced utilizing readily available and environmentally friendly methods.
dc.language.isoenglanti
dc.publisherInforma UK Limited
dc.relation.ispartofseriesJournal of adhesion
dc.relation.urihttp://dx.doi.org/10.1080/00218464.2019.1669152
dc.rightsAll rights reserved
dc.subjectadhesion
dc.subjectresins
dc.subjectadhesive joints
dc.subjectfracture
dc.subjecthierarchical surface patterning
dc.subjectfunctionalization
dc.titleHigh adhesion between aluminum and unsaturated polyester through hierarchical surface patterning
dc.description.versionfinal draft
dc.contributor.departmentDepartment of Chemistry, activities
dc.contributor.departmentSIB-labs -infrastruktuuriyksikön toiminta
uef.solecris.id65644071en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© Informa UK Limited
dc.relation.doi10.1080/00218464.2019.1669152
dc.description.reviewstatuspeerReviewed
dc.format.pagerange
dc.relation.issn0021-8464
dc.relation.volume[Published online: 20 Sep 2019]
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessEi


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