Hydrophobic silica coating based on waterglass on copper by electrophoretic depositon

E. Setyowati, S. F. Amalia, Nazriati, Samsudin Affandi, Minta Yuwana, H. Setyawan*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Citations (Scopus)

Abstract

Hydrophobic silica coating on copper (Cu) has been successfully prepared by electrophoretic deposition (EPD) of silica sol prepared from waterglass. trimethyl chlorosilane (TMCS) was used as the modifying agent to produce hydrophobic coating by replacing the silanol groups on the silica surface with alkyl groups. The hydrophobicity was indicated by the contact angle of water droplet on the coating surface. It has been shown that TMCS concentration plays an important role in the preparation of hydrophobic coating. However, higher concentration of TMCS made the copper corroded before coated with silica due to the production of Cl- ions when TMCS reacted with water and silanol groups during electrophoretic deposition. In addition, the electric field intensity, silica concentration and deposition time also influence the hydrophobicity of the coating. Increasing the three parameters produces silica coating with higher hydrophobicity. The contact angle of the silica coating can reach 130°. EIS analysis showed that the silica coating is very porous.

Original languageEnglish
Title of host publicationAdvances in Applied Mechanics and Materials
Pages749-754
Number of pages6
DOIs
Publication statusPublished - 2014
EventInternational Conference on Mechanical Engineering, ICOME 2013 - Mataram, Lombok, Indonesia
Duration: 19 Sept 201321 Sept 2013

Publication series

NameApplied Mechanics and Materials
Volume493
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

ConferenceInternational Conference on Mechanical Engineering, ICOME 2013
Country/TerritoryIndonesia
CityMataram, Lombok
Period19/09/1321/09/13

Keywords

  • Electrophoretic deposition
  • Hydrophobic
  • Silica sol

Fingerprint

Dive into the research topics of 'Hydrophobic silica coating based on waterglass on copper by electrophoretic depositon'. Together they form a unique fingerprint.

Cite this