Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties
Ice accumulation is a key and unsolved problem for many composite structures with polymer matrices, e.g., wind turbines and airplanes. One of the solutions to avoid icing is to use anti-icing coatings. In recent years, the influence of hydrophobicity of a surface on its icephobic properties has been...
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doaj-bcad6cace5324c11a67dbc43b689a40a2020-12-12T00:04:32ZengMDPI AGProcesses2227-97172020-12-0181635163510.3390/pr8121635Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic PropertiesRafał Kozera0Bartłomiej Przybyszewski1Katarzyna Żołyńska2Anna Boczkowska3Bogna Sztorch4Robert E. Przekop5Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warszawa, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warszawa, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warszawa, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warszawa, PolandCentre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, PolandCentre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, PolandIce accumulation is a key and unsolved problem for many composite structures with polymer matrices, e.g., wind turbines and airplanes. One of the solutions to avoid icing is to use anti-icing coatings. In recent years, the influence of hydrophobicity of a surface on its icephobic properties has been studied. This solution is based on the idea that a material with poor wettability maximally reduces the contact time between a cooled drop of water and the surface, consequently prevents the formation of ice, and decreases its adhesion to the surface. In this work, a hybrid modification of a gelcoat based on unsaturated polyester resin with nanosilica and chemical modifiers from the group of triple functionalized polyhedral oligomeric silsesquioxanes (POSS) and double organofunctionalized polysiloxanes (generally called multi-functionalized organosilicon compounds (MFSC)) was applied. The work describes how the change of modifier concentration and its structural structure finally influences the ice phobic properties. The modifiers used in their structure groups lowered the free surface energy and crosslinking groups with the applied resin, lowering the phenomena of migration and removing the modifier from the surface layer of gelcoat. The main studies from the icephobicity point of view were the measurements of ice adhesion forces between modified materials and ice. The tests were based on the measurements of the shear strength between the ice layer and the modified surface and were conducted using a tensile machine. Hydrophobic properties of the obtained nanocomposites were determined by measurement of the contact angle and contact angle hysteresis. As the results of the work, it was found that the modification of gelcoat with nanosilica and multi-functionalized silicone compounds results in the improvement of icephobic properties when compared to unmodified gelcoat while no direct influence of wettability properties was found. Ice adhesion decreased by more than 30%.https://www.mdpi.com/2227-9717/8/12/1635icephobicityhydrophobicityice adhesionunsaturated polyester resinnanosilicamulti-functionalized silicone compounds (MFSC) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rafał Kozera Bartłomiej Przybyszewski Katarzyna Żołyńska Anna Boczkowska Bogna Sztorch Robert E. Przekop |
spellingShingle |
Rafał Kozera Bartłomiej Przybyszewski Katarzyna Żołyńska Anna Boczkowska Bogna Sztorch Robert E. Przekop Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties Processes icephobicity hydrophobicity ice adhesion unsaturated polyester resin nanosilica multi-functionalized silicone compounds (MFSC) |
author_facet |
Rafał Kozera Bartłomiej Przybyszewski Katarzyna Żołyńska Anna Boczkowska Bogna Sztorch Robert E. Przekop |
author_sort |
Rafał Kozera |
title |
Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties |
title_short |
Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties |
title_full |
Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties |
title_fullStr |
Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties |
title_full_unstemmed |
Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties |
title_sort |
hybrid modification of unsaturated polyester resins to obtain hydro- and icephobic properties |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2020-12-01 |
description |
Ice accumulation is a key and unsolved problem for many composite structures with polymer matrices, e.g., wind turbines and airplanes. One of the solutions to avoid icing is to use anti-icing coatings. In recent years, the influence of hydrophobicity of a surface on its icephobic properties has been studied. This solution is based on the idea that a material with poor wettability maximally reduces the contact time between a cooled drop of water and the surface, consequently prevents the formation of ice, and decreases its adhesion to the surface. In this work, a hybrid modification of a gelcoat based on unsaturated polyester resin with nanosilica and chemical modifiers from the group of triple functionalized polyhedral oligomeric silsesquioxanes (POSS) and double organofunctionalized polysiloxanes (generally called multi-functionalized organosilicon compounds (MFSC)) was applied. The work describes how the change of modifier concentration and its structural structure finally influences the ice phobic properties. The modifiers used in their structure groups lowered the free surface energy and crosslinking groups with the applied resin, lowering the phenomena of migration and removing the modifier from the surface layer of gelcoat. The main studies from the icephobicity point of view were the measurements of ice adhesion forces between modified materials and ice. The tests were based on the measurements of the shear strength between the ice layer and the modified surface and were conducted using a tensile machine. Hydrophobic properties of the obtained nanocomposites were determined by measurement of the contact angle and contact angle hysteresis. As the results of the work, it was found that the modification of gelcoat with nanosilica and multi-functionalized silicone compounds results in the improvement of icephobic properties when compared to unmodified gelcoat while no direct influence of wettability properties was found. Ice adhesion decreased by more than 30%. |
topic |
icephobicity hydrophobicity ice adhesion unsaturated polyester resin nanosilica multi-functionalized silicone compounds (MFSC) |
url |
https://www.mdpi.com/2227-9717/8/12/1635 |
work_keys_str_mv |
AT rafałkozera hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties AT bartłomiejprzybyszewski hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties AT katarzynazołynska hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties AT annaboczkowska hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties AT bognasztorch hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties AT roberteprzekop hybridmodificationofunsaturatedpolyesterresinstoobtainhydroandicephobicproperties |
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