{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/32775"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/32775","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"Investigations of Press Bonded Zinc-Rich Powder Coatings","abstract":"Zinc-rich powder coatings (ZRPCs) are promising environmentally friendly alternatives to solvent-borne zinc-rich coatings. There are several difficulties and challenges with formulating and manufacturing these coatings. A novel technique without extrusion was assessed to avoid excessive wear of the screws during the conventional extrusion of zinc-rich powder coatings. ZRPCs were formulated by selecting a suitable polyester resin, determining the zinc content, additive dosages, etc., and applied as a single layer. An additional wetting agent further improved the surface quality. A double-layer system consisting of ZRPC as a basecoat and a polyester topcoat was designed. The PDMS as an additive imparted hydrophobicity and self-healing to both coatings. In addition, a 30% recovery of self-healing efficiency was provided by PDMS after the wiping test. The coating system exhibited superior corrosion resistance in a 3000-h neutral salt spray test. The formulation offers novel ways to manufacture high-performance powder coatings for heavy-duty applications.","abstract_html":"Zinc-rich powder coatings (ZRPCs) are promising environmentally friendly alternatives to solvent-borne zinc-rich coatings. There are several difficulties and challenges with formulating and manufacturing these coatings. A novel technique without extrusion was assessed to avoid excessive wear of the screws during the conventional extrusion of zinc-rich powder coatings. ZRPCs were formulated by selecting a suitable polyester resin, determining the zinc content, additive dosages, etc., and applied as a single layer. An additional wetting agent further improved the surface quality. A double-layer system consisting of ZRPC as a basecoat and a polyester topcoat was designed. The PDMS as an additive imparted hydrophobicity and self-healing to both coatings. In addition, a 30% recovery of self-healing efficiency was provided by PDMS after the wiping test. The coating system exhibited superior corrosion resistance in a 3000-h neutral salt spray test. The formulation offers novel ways to manufacture high-performance powder coatings for heavy-duty applications.","abstract_has_math":false,"creators":["Zhu, Wenhao"],"institution":"The University of Western Ontario","degree_name":"M Eng Sci","degree_level":null,"degree_discipline":"Chemical and Biochemical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Zhu, Jesse","Zhang, Hui"],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-02-02","date_published":"2023-02-02","updated_at":"2026-07-27T21:55:59Z","subjects":["Zinc-rich","powder coatings","ZRPCs","anti-corrosive","hydrophobic","self-healing."],"languages":["en_ca"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/32775","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Zhu, Jesse","Zhang, Hui"]},{"key":"dc:creator","label":"Author","values":["Zhu, Wenhao"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-07-10T19:36:27Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-07-10T19:36:27Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-02-02"]},{"key":"dc:publisher","label":"Institution","values":["The University of Western Ontario"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical and Biochemical Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M Eng Sci"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Zinc-rich","powder coatings","ZRPCs","anti-corrosive","hydrophobic","self-healing."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_ca"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14721/32775"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."]},{"key":"dc:description.abstract","label":"Abstract","values":["Zinc-rich powder coatings (ZRPCs) are promising environmentally friendly alternatives to solvent-borne zinc-rich coatings. There are several difficulties and challenges with formulating and manufacturing these coatings. A novel technique without extrusion was assessed to avoid excessive wear of the screws during the conventional extrusion of zinc-rich powder coatings. ZRPCs were formulated by selecting a suitable polyester resin, determining the zinc content, additive dosages, etc., and applied as a single layer. An additional wetting agent further improved the surface quality. A double-layer system consisting of ZRPC as a basecoat and a polyester topcoat was designed. The PDMS as an additive imparted hydrophobicity and self-healing to both coatings. In addition, a 30% recovery of self-healing efficiency was provided by PDMS after the wiping test. The coating system exhibited superior corrosion resistance in a 3000-h neutral salt spray test. The formulation offers novel ways to manufacture high-performance powder coatings for heavy-duty applications."]},{"key":"dc:title","label":"Title","values":["Investigations of Press Bonded Zinc-Rich Powder Coatings"]}]}],"canonical_facts":{"dc:contributor.advisor":["Zhu, Jesse","Zhang, Hui"],"dc:creator":["Zhu, Wenhao"],"dc:date.accessioned":["2025-07-10T19:36:27Z"],"dc:date.available":["2025-07-10T19:36:27Z"],"dc:date.issued":["2023-02-02"],"dc:description":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."],"dc:description.abstract":["Zinc-rich powder coatings (ZRPCs) are promising environmentally friendly alternatives to solvent-borne zinc-rich coatings. There are several difficulties and challenges with formulating and manufacturing these coatings. A novel technique without extrusion was assessed to avoid excessive wear of the screws during the conventional extrusion of zinc-rich powder coatings. ZRPCs were formulated by selecting a suitable polyester resin, determining the zinc content, additive dosages, etc., and applied as a single layer. An additional wetting agent further improved the surface quality. A double-layer system consisting of ZRPC as a basecoat and a polyester topcoat was designed. The PDMS as an additive imparted hydrophobicity and self-healing to both coatings. In addition, a 30% recovery of self-healing efficiency was provided by PDMS after the wiping test. The coating system exhibited superior corrosion resistance in a 3000-h neutral salt spray test. The formulation offers novel ways to manufacture high-performance powder coatings for heavy-duty applications."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/32775"],"dc:language.iso":["en_ca"],"dc:publisher":["The University of Western Ontario"],"dc:subject":["Zinc-rich","powder coatings","ZRPCs","anti-corrosive","hydrophobic","self-healing."],"dc:title":["Investigations of Press Bonded Zinc-Rich Powder Coatings"],"dc:type":["thesis"],"thesis:degree_discipline":["Chemical and Biochemical Engineering"],"thesis:degree_name":["M Eng Sci"]},"updated_at":"2026-07-27T21:55:59Z"}