| Description: | Polymeric coatings are being used in a growing number of applications, contributing to protection against weather conditions and localized corrosion, reducing the friction and erosion wear on the substrate. In this study, various polypropylene (PP) coatings were applied onto steel substrates by compression molding. Chemical modification of PP has been performed to increase its adhesion to metallic surfaces by grafting of maleic anhydride (MAH) onto PP in the presence of dicumyl peroxide (DCP). Influence of different concentrations of MAH and DCP on the properties of resulting materials have been examined. The coated steel samples are characterized by scanning electron microscopy (SEM), shear adhesion testing, FTIR and tribometry. The coatings with 3 wt. % MAH have shown the maximum adhesion strength due to maximum amount of grafting. The wear rates increased with increasing the amount of MAH due to simultaneous increase in un-reacted MAH. |
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| Creator(s): | Mahendrakar, Sridhar |
| Creation Date: | May 2010 |
| Partner(s): |
UNT Libraries
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| Collection(s): |
UNT Theses and Dissertations
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| Usage: |
Total Uses: 984
Past 30 days: 58
Yesterday: 1
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| Publisher Info: |
Publisher Name: University of North Texas
Publisher Info: Web: www.unt.edu
Place of Publication: Denton, Texas
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| Original Creation Date: | May 2010 | |
| Description: | Polymeric coatings are being used in a growing number of applications, contributing to protection against weather conditions and localized corrosion, reducing the friction and erosion wear on the substrate. In this study, various polypropylene (PP) coatings were applied onto steel substrates by compression molding. Chemical modification of PP has been performed to increase its adhesion to metallic surfaces by grafting of maleic anhydride (MAH) onto PP in the presence of dicumyl peroxide (DCP). Influence of different concentrations of MAH and DCP on the properties of resulting materials have been examined. The coated steel samples are characterized by scanning electron microscopy (SEM), shear adhesion testing, FTIR and tribometry. The coatings with 3 wt. % MAH have shown the maximum adhesion strength due to maximum amount of grafting. The wear rates increased with increasing the amount of MAH due to simultaneous increase in un-reacted MAH. |
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| Degree: |
Name:
Master of Science
Level:
Master's
Discipline:
Materials Science and Engineering
Department:
Department of Materials Science and Engineering
Grantor:
University of North Texas
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| Keyword(s): | Adhesion to metals | polymer coatings | MAH-g-PP | |
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| Partner: |
UNT Libraries
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| Collection: |
UNT Theses and Dissertations
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| Resource Type: | Thesis or Dissertation | |
| Format: | Text | |
| Rights: |
Access:
Public
License:
Copyright
Holder:
Mahendrakar, Sridhar
Statement:
Copyright is held by the author, unless otherwise noted. All rights reserved.
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