This study examines how precursor ratios and curing treatments affect the icephobicity of Polydimethylsiloxane (PDMS). Higher precursor ratios (e.g., 30:1) enhance hydrophobicity and softness, reducing ice adhesion up to seven times compared to untreated surfaces. Durability tests show that 30:1 coatings maintain performance under environmental stress. The findings highlight the potential of PDMS, with optimized ratios and curing conditions, for durable anti-icing applications.<\/p>\n","protected":false},"author":93,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[1340],"targets":[1314,1317],"pubblicazioni_tipologie":[773],"class_list":["post-203510","pubblicazioni","type-pubblicazioni","status-publish","hentry","tag-resilience","targets-press-media-en","targets-research","pubblicazioni_tipologie-isi-article-en"],"acf":{"dont_show_hompage":true,"projects":{"ID":188405,"post_author":"93","post_date":"2024-06-13 15:10:12","post_date_gmt":"2024-06-13 13:10:12","post_content":"","post_title":"Resilience and Security for Energy Systems","post_excerpt":"The goal of the project is to increase the security and resilience of the energy system in the face of greater environmental threats due to climate change, through the development of tools to support institutions and operators and the definition of an optimal set of actions to be adopted for this purpose.","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"resilience-and-security-for-energy-systems","to_ping":"","pinged":"","post_modified":"2024-07-02 10:30:30","post_modified_gmt":"2024-07-02 08:30:30","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.rse-web.it\/progetti\/resilience-and-security-for-energy-systems\/","menu_order":0,"post_type":"progetti","post_mime_type":"","comment_count":"0","filter":"raw"},"order_posts":"","dont_show_search":false,"related_posts":false,"show_on_slider":false,"single_post_data":{"titolo_spot":"","post_content":"
Elastomers are intriguing materials for many applications, one of these being icephobic coatings. Elastic modulus and work of adhesion are the key parameters coming into play in ice detachment mechanisms, and can be related to hardness and wettability. Polydimethylsiloxane (PDMS) is widely used for anti-ice applications; however, not many works deal with the correlation between cross-linking grade, curing treatments, and icephobicity.<\/p>\n
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This study focuses on PDMS (Sylgard184R) coatings, encompassing four different pre-polymer to cross-linking agent (A:B) ratios ranging from 5:1 to 30:1, and nine curing treatments. The results indicate that increasing the A:B ratio enhances hydrophobicity, softness, and icephobicity, assessed through shear stress measurements.<\/p>\n
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Curing treatments primarily affect hardness and icephobicity, with longer heat treatments resulting in higher hardness and ice adhesion. All samples exhibit promising performances in lowering shear stress values, up to seven times in respect to the uncoated reference for 30:1 ratio. Additionally, a durability assessment is conducted on samples exposed to stress tests in the climatic chamber.<\/p>\n
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A slight deterioration in hydrophobicity across all samples is observed and, notably, a significant hardness increase, around 13%, is experienced for the 5:1 ratio only. The samples also demonstrate an overall robust icephobicity after stress tests, and, for the 30:1 ratio, an average shear stress value four times lower than the reference is maintained.<\/p>\n
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In this work, we highlight the importance of the fine-tuning of the precursors ratio and thermal treatments on the PDMS properties and durability.<\/p>\n","scarica_file":false,"link_estreno":[{"link_text":"Download Publication","link":"https:\/\/www.mdpi.com\/2079-6412\/14\/7\/901"}],"button":{"text":"","link":""},"referente_group":false,"data_emissione":"2024-07-18","autori":"M. Balordi, A. Casali, P. Gadia, F. Pini, G. Santucci de Magistris (RSE S.p.A.), P. Pelagatti (Universit\u00e0 di Parma) ","destinazione":"MDPI Coatings, Vol. 14 Issue 7, 18 Luglio 2024","rif_rse":"24011063"},"satellite_post_url":""},"yoast_head":"\n