Relationship Between Water Wettability and Ice Adhesion (Preprint)
Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness of the icing problem, the fundamentals of ice adhesion have received relativel...
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ftdtic:ADA533253 2023-05-15T16:37:24+02:00 Relationship Between Water Wettability and Ice Adhesion (Preprint) Mabry, Joseph M. Meuler, Adam J. Smith, J. D. Varanasi, Kripa K. McKinley, Gareth H. Cohen, Robert E. MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING 2010-10-21 text/html http://www.dtic.mil/docs/citations/ADA533253 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA533253 en eng http://www.dtic.mil/docs/citations/ADA533253 Approved for public release; distribution is unlimited. DTIC Snow Ice and Permafrost Adhesives Seals and Binders *ICE FORMATION *ADHESION POLYMERS RESISTANCE TRANSMISSION LINES COATINGS WETTING DROPS ELECTRIC POWER TELECOMMUNICATIONS DISKS TEXTURE SHEAR STRENGTH SCIENTIFIC LITERATURE SURFACE ENERGY INFRASTRUCTURE TEST AND EVALUATION WATER *ICE ADHESION ICEPHOBIC CONTACT ANGLE HYDROPHOBIC *WATER WETTABILITY FLUORO POSS Text 2010 ftdtic 2016-02-23T04:28:42Z Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness of the icing problem, the fundamentals of ice adhesion have received relatively little attention in the scientific literature and it is not widely understood which attributes must be tuned to systematically design ?icephobic? surfaces that are resistant to icing. Here we probe the relationships between advancing/receding water contact angles and the strength of ice adhesion to bare steel and twenty-one different test coatings (~200-300 nm thick) applied to the nominally smooth steel discs. Contact angles are measured using a commercially available goniometer while the average shear strengths of ice adhesion are evaluated with a custom-built laboratory-scale adhesion apparatus. The coatings investigated are comprised of commercially available polymers and fluorinated polyhedral oligomeric silsesquioxanes (fluorodecyl POSS), a low surface energy additive known to enhance liquid repellency. Ice adhesion strength correlates strongly with the practical works of adhesion required to remove liquid water drops from the surfaces (i.e., with the quantity [1 + cos θrec]), and the average shear strength of ice adhesion was reduced by as much as a factor of 4.2 when bare steel discs were coated with fluorodecyl POSS- containing materials. We argue that any further appreciable reduction in ice adhesion strength will require textured surfaces, as no known materials exhibit receding water contact angles on smooth/flat surfaces that are significantly above those reported here (i.e., the values of [1 + cos θrec] reported here have essentially reached a minimum for known materials). Pub. in ACSA Applied Materials and Interface, p1-33, 2010. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Adhesives Seals and Binders *ICE FORMATION *ADHESION POLYMERS RESISTANCE TRANSMISSION LINES COATINGS WETTING DROPS ELECTRIC POWER TELECOMMUNICATIONS DISKS TEXTURE SHEAR STRENGTH SCIENTIFIC LITERATURE SURFACE ENERGY INFRASTRUCTURE TEST AND EVALUATION WATER *ICE ADHESION ICEPHOBIC CONTACT ANGLE HYDROPHOBIC *WATER WETTABILITY FLUORO POSS |
spellingShingle |
Snow Ice and Permafrost Adhesives Seals and Binders *ICE FORMATION *ADHESION POLYMERS RESISTANCE TRANSMISSION LINES COATINGS WETTING DROPS ELECTRIC POWER TELECOMMUNICATIONS DISKS TEXTURE SHEAR STRENGTH SCIENTIFIC LITERATURE SURFACE ENERGY INFRASTRUCTURE TEST AND EVALUATION WATER *ICE ADHESION ICEPHOBIC CONTACT ANGLE HYDROPHOBIC *WATER WETTABILITY FLUORO POSS Mabry, Joseph M. Meuler, Adam J. Smith, J. D. Varanasi, Kripa K. McKinley, Gareth H. Cohen, Robert E. Relationship Between Water Wettability and Ice Adhesion (Preprint) |
topic_facet |
Snow Ice and Permafrost Adhesives Seals and Binders *ICE FORMATION *ADHESION POLYMERS RESISTANCE TRANSMISSION LINES COATINGS WETTING DROPS ELECTRIC POWER TELECOMMUNICATIONS DISKS TEXTURE SHEAR STRENGTH SCIENTIFIC LITERATURE SURFACE ENERGY INFRASTRUCTURE TEST AND EVALUATION WATER *ICE ADHESION ICEPHOBIC CONTACT ANGLE HYDROPHOBIC *WATER WETTABILITY FLUORO POSS |
description |
Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness of the icing problem, the fundamentals of ice adhesion have received relatively little attention in the scientific literature and it is not widely understood which attributes must be tuned to systematically design ?icephobic? surfaces that are resistant to icing. Here we probe the relationships between advancing/receding water contact angles and the strength of ice adhesion to bare steel and twenty-one different test coatings (~200-300 nm thick) applied to the nominally smooth steel discs. Contact angles are measured using a commercially available goniometer while the average shear strengths of ice adhesion are evaluated with a custom-built laboratory-scale adhesion apparatus. The coatings investigated are comprised of commercially available polymers and fluorinated polyhedral oligomeric silsesquioxanes (fluorodecyl POSS), a low surface energy additive known to enhance liquid repellency. Ice adhesion strength correlates strongly with the practical works of adhesion required to remove liquid water drops from the surfaces (i.e., with the quantity [1 + cos θrec]), and the average shear strength of ice adhesion was reduced by as much as a factor of 4.2 when bare steel discs were coated with fluorodecyl POSS- containing materials. We argue that any further appreciable reduction in ice adhesion strength will require textured surfaces, as no known materials exhibit receding water contact angles on smooth/flat surfaces that are significantly above those reported here (i.e., the values of [1 + cos θrec] reported here have essentially reached a minimum for known materials). Pub. in ACSA Applied Materials and Interface, p1-33, 2010. |
author2 |
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING |
format |
Text |
author |
Mabry, Joseph M. Meuler, Adam J. Smith, J. D. Varanasi, Kripa K. McKinley, Gareth H. Cohen, Robert E. |
author_facet |
Mabry, Joseph M. Meuler, Adam J. Smith, J. D. Varanasi, Kripa K. McKinley, Gareth H. Cohen, Robert E. |
author_sort |
Mabry, Joseph M. |
title |
Relationship Between Water Wettability and Ice Adhesion (Preprint) |
title_short |
Relationship Between Water Wettability and Ice Adhesion (Preprint) |
title_full |
Relationship Between Water Wettability and Ice Adhesion (Preprint) |
title_fullStr |
Relationship Between Water Wettability and Ice Adhesion (Preprint) |
title_full_unstemmed |
Relationship Between Water Wettability and Ice Adhesion (Preprint) |
title_sort |
relationship between water wettability and ice adhesion (preprint) |
publishDate |
2010 |
url |
http://www.dtic.mil/docs/citations/ADA533253 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA533253 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA533253 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766027696968564736 |