Investigation of Polymeric Composites with High Aspect Ratio Nanoparticulates for Coatings

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atmire.migration.oldid4579
dc.contributor.advisorPark, Simon
dc.contributor.advisorPark, Dong-Yeob
dc.contributor.authorTabkhPaz Sarabi, Majid
dc.contributor.committeememberRoberts, Edward
dc.contributor.committeememberSundararaj, Uttandaraman
dc.contributor.committeememberLi, Simon
dc.contributor.committeememberChang, Gap-Soo
dc.date.accessioned2016-07-07T19:31:20Z
dc.date.available2016-07-07T19:31:20Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractTo overcome some of the challenges associated with existing pipeline coatings, the use of polymeric nanocomposites as coating materials are proposed in this research. By employing novel inclusions such as hexagonal boron nitride (hBN) nanoplatelets, carbon nanotubes (CNTs), graphene nanoplatelets (GNPs), and zinc particulates within a conventional polymer coating, high-performance polymeric nanocomposites can be created for the purposes of pipeline protection. The excellent performances of the proposed polymer-based composites are due to unique mechanical, electrical, thermal, and anti-corrosive properties of the additives. The addition of 2D nanoplatelets such as hBN and GNP to the pure polymers may result in the fabrication of nanocomposites with lower coefficient of thermal expansion (CTE), high gas barrier, high mechanical stability, and anti-corrosive performances. Application of CNTs and zinc particles as hybrid compositions can also improve corrosion protection of the composite coatings due to the synergistic effects of zinc particles as sacrificial material and CNTs as connectors of an electrically conductive network. This research is aimed at investigating the feasibility of using these nanocomposites as coating materials. Initially, the effects of dispersion and geometry of CNTs on the final properties of nanocomposites were examined. Then, two random walk models were developed to study the effects of the addition of inclusions on the electrical and thermal conductivities of nanocomposites. Finally, the selected nanoparticulates were added to polymers, and the coating capabilities of composites were evaluated. From the tests and investigations conducted on the developed composite coatings, it was observed that thermal expansion, gas barrier, mechanical strength, adhesion, and corrosion protection performances were improved compared to the pure polymeric coatings. The corroded area on the cathodic disbondment test specimens reduced down up to 90% for the composite with zinc (20 wt.%), MWCNTs (2 wt.%), and GNPs (2 wt.%), compared to a specimen coated with a pure polymer. It is seen that the presence of nanoparticulates decreased gas penetration and thermal expansion of the matrix by 75% and 65%, respectively.en_US
dc.identifier.citationTabkhPaz Sarabi, M. (2016). Investigation of Polymeric Composites with High Aspect Ratio Nanoparticulates for Coatings (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26658en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26658
dc.identifier.urihttp://hdl.handle.net/11023/3111
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Mechanical
dc.subject.classificationPolymeren_US
dc.subject.classificationCoatingen_US
dc.subject.classificationNanomaterialsen_US
dc.subject.classificationCompositesen_US
dc.subject.classificationMixingen_US
dc.subject.classificationModelingen_US
dc.subject.classificationRandom walken_US
dc.subject.classificationPipelineen_US
dc.subject.classificationCorrosionen_US
dc.subject.classificationCarbon nanotubesen_US
dc.subject.classificationGrapheneen_US
dc.titleInvestigation of Polymeric Composites with High Aspect Ratio Nanoparticulates for Coatings
dc.typedoctoral thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
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