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

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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.

About the authors

N. DENMAN

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia

Email: o_serenko@ineos.ac.ru
Россия, 119071, Москва, Ленинский просп., 31, корп. 4

A. M. EMEL’YANENKO

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia

Email: o_serenko@ineos.ac.ru
Россия, 119071, Москва, Ленинский просп., 31, корп. 4

O. A. O. A. SERENKO

Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia

Email: o_serenko@ineos.ac.ru
Россия, 119991, Москва, ул. Вавилова, 28, стр. 1

L. B. BOINOVICH

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia

Author for correspondence.
Email: o_serenko@ineos.ac.ru
Россия, 119071, Москва, Ленинский просп., 31, корп. 4

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Copyright (c) 2023 Н. Денман, А.М. Емельяненко, О.А. Серенко, Л.Б. Бойнович