CHARACTERIZATION OF SUPERHYDROPHOBIC COATINGS BASED ON PDMS AND MQ RESIN ON TEXTURED SURFACES

N. DENMAN; Денман Н.; A. M. EMEL’YANENKO; Емельяненко А. М.; O. A. O. A. SERENKO; Серенко О. А.; L. B. BOINOVICH; Бойнович Л. Б.

doi:10.31857/S0023291223600414

CHARACTERIZATION OF SUPERHYDROPHOBIC COATINGS BASED ON PDMS AND MQ RESIN ON TEXTURED SURFACES

Authors: DENMAN N.¹, EMEL’YANENKO A.M.¹, O. A. SERENKO O.A.², BOINOVICH L.B.¹
Affiliations:
1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia
2. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
Issue: Vol 85, No 4 (2023)
Pages: 502-510
Section: Articles
Submitted: 16.10.2023
Published: 01.07.2023
URL: https://ogarev-online.ru/0023-2912/article/view/137248
DOI: https://doi.org/10.31857/S0023291223600414
EDN: https://elibrary.ru/OLUQMA
ID: 137248

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Abstract
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Abstract

The paper presents the results of studying coatings based on poly(dimethylsiloxane) rubber crosslinked with MQ resin at different contents of the latter. The PDMS :MQ resin ratios have been taken to be 2 : 1, 1 : 1, and 1 : 2. It has been shown that the application of a hydrophobic fluorinated-group-free composite with composition PDMS :MQ = 1 : 1 onto a pre-textured surface by spin-coating or deep-coating results in the formation of superhydrophobic coatings. The coatings are characterized by extremely large contact angles (170°) and rolling angles no larger than 4°. The analysis of variations in the contact angle, surface tension, and contact diameter and volume of a water droplet that has been in contact with a coating for a long time has indicated a high hydrolytic resistance of the obtained coatings.

References

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