Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces
Hydrophobic surfaces are repellent to aqueous liquids and corrosive media. Polyurethane (PU) has hydrophobicity which are widely applicable in various fields. In this project, four different coating methods which were drop casting, spin coating, dip coating, and spray coating used to fabricate hydro...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2022
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| Online Access: | http://eprints.usm.my/56674/1/Preparation%20And%20Characterization%20Of%20Hydrophobic%20Polyurethane%20Coating%20For%20Steel%20Surfaces_Soon%20Li%20Jie.pdf |
| _version_ | 1825907540952612864 |
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| author | Soon, Li Jie |
| author_facet | Soon, Li Jie |
| author_sort | Soon, Li Jie |
| collection | USM |
| description | Hydrophobic surfaces are repellent to aqueous liquids and corrosive media. Polyurethane (PU) has hydrophobicity which are widely applicable in various fields. In this project, four different coating methods which were drop casting, spin coating, dip coating, and spray coating used to fabricate hydrophobic PU coating films on 304 steel plates. In addition, graphene nanoplatelets (GNP) was added in PU with 0.5% (w/v) to
increase the properties of PU coating while stainless-steel 500 mesh was applied on coating surface to create high surface roughness of coating. Then the coatings were characterized through FTIR, XRD, AFM, and WCA measurement as well as mechanical test such as tensile test and corrosion resistance test. The WCA measurement of coating after incorporation of GNP into PU showed the increasement about 12.04°-23.09°. GNP
also successfully decreased the corrosion rate of coating in 3.5 % NaCl solution by blocking the corrosive ion from entering the gaps and pores in PU. The mechanical
strength of film increased with the existence of strong hydrogen bond within the film. The application of stainless-steel 500 mesh improved the surface roughness of coatings
also help in increasing the WCA of 5-8°, air trapped in between coating and surrounding environment protect the coating surface with low surface energy. The application of stainless-steel 500 mesh can further decrease the corrosion rate of 304 steel. This study provides a comprehensive comparison of PU, PU-mesh, PU/GNP, and PU/GNP-mesh coatings surface morphologies, hydrophobicity, and corrosion resistance properties. |
| first_indexed | 2024-03-06T16:05:44Z |
| format | Monograph |
| id | usm.eprints-56674 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T16:05:44Z |
| publishDate | 2022 |
| publisher | Universiti Sains Malaysia |
| record_format | dspace |
| spelling | usm.eprints-566742023-01-31T06:50:03Z http://eprints.usm.my/56674/ Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces Soon, Li Jie T Technology TN Mining Engineering. Metallurgy Hydrophobic surfaces are repellent to aqueous liquids and corrosive media. Polyurethane (PU) has hydrophobicity which are widely applicable in various fields. In this project, four different coating methods which were drop casting, spin coating, dip coating, and spray coating used to fabricate hydrophobic PU coating films on 304 steel plates. In addition, graphene nanoplatelets (GNP) was added in PU with 0.5% (w/v) to increase the properties of PU coating while stainless-steel 500 mesh was applied on coating surface to create high surface roughness of coating. Then the coatings were characterized through FTIR, XRD, AFM, and WCA measurement as well as mechanical test such as tensile test and corrosion resistance test. The WCA measurement of coating after incorporation of GNP into PU showed the increasement about 12.04°-23.09°. GNP also successfully decreased the corrosion rate of coating in 3.5 % NaCl solution by blocking the corrosive ion from entering the gaps and pores in PU. The mechanical strength of film increased with the existence of strong hydrogen bond within the film. The application of stainless-steel 500 mesh improved the surface roughness of coatings also help in increasing the WCA of 5-8°, air trapped in between coating and surrounding environment protect the coating surface with low surface energy. The application of stainless-steel 500 mesh can further decrease the corrosion rate of 304 steel. This study provides a comprehensive comparison of PU, PU-mesh, PU/GNP, and PU/GNP-mesh coatings surface morphologies, hydrophobicity, and corrosion resistance properties. Universiti Sains Malaysia 2022-08-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/56674/1/Preparation%20And%20Characterization%20Of%20Hydrophobic%20Polyurethane%20Coating%20For%20Steel%20Surfaces_Soon%20Li%20Jie.pdf Soon, Li Jie (2022) Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral. (Submitted) |
| spellingShingle | T Technology TN Mining Engineering. Metallurgy Soon, Li Jie Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title | Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title_full | Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title_fullStr | Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title_full_unstemmed | Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title_short | Preparation And Characterization Of Hydrophobic Polyurethane Coating For Steel Surfaces |
| title_sort | preparation and characterization of hydrophobic polyurethane coating for steel surfaces |
| topic | T Technology TN Mining Engineering. Metallurgy |
| url | http://eprints.usm.my/56674/1/Preparation%20And%20Characterization%20Of%20Hydrophobic%20Polyurethane%20Coating%20For%20Steel%20Surfaces_Soon%20Li%20Jie.pdf |
| work_keys_str_mv | AT soonlijie preparationandcharacterizationofhydrophobicpolyurethanecoatingforsteelsurfaces |