Multi-functional PDMS/MMT Coating on magnesium substrates: Hydrophobicity, durability, and EMI shielding
Duan C, Han L, Yang G, Schubert DW, Zhang T (2024)
Publication Type: Journal article
Publication year: 2024
Journal
Book Volume: 39
Pages Range: 108603
Article Number: 108603
DOI: 10.1016/j.mtcomm.2024.108603
Abstract
In this work, a highly efficient surface coating strategy using polydimethylsiloxane (PDMS) modified low-cost montmorillonite (MMT) was revealed, to enhance the surface performance and durability of magnesium substrates. Contact angle, self-cleaning, wear resistance, corrosion resistance and ultrabroadband electromagnetic absorption and EMI shielding evaluations were comprehensively studied. The obtained PDMS/MMT/Mg substrate consistently exhibited an obvious increased contact angle from 76.1 to 141.9 °, signifying strong hydrophobicity and self-cleaning properties compared to the untreated R-Mg substrate. No significant surface wettability changes were detected even after 50 times of tape peeling or 3.0 wt% NaCl solution immersion for 60 h, indicating high durability of the protective PDMS/MMT coatings. Moreover, the PDMS/MMT/Mg substrates can be applied as microwave-absorbing materials, particularly in high-frequency applications, and as excellent EMI shielding with an SE value above 40 dB. This study highlights the effectiveness of the relatively inexpensive PDMS/MMT coating in enhancing the performance of magnesium substrates, providing a new approach to balance cost control and meet performance requirements in industrial or large-scale production.
Authors with CRIS profile
Guanda Yang
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)
Dirk Schubert
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)
Additional Organisation(s)
Involved external institutions
China (CN)How to cite
APA:
Duan, C., Han, L., Yang, G., Schubert, D.W., & Zhang, T. (2024). Multi-functional PDMS/MMT Coating on magnesium substrates: Hydrophobicity, durability, and EMI shielding. Materials Today Communications, 39, 108603. https://dx.doi.org/10.1016/j.mtcomm.2024.108603
MLA:
Duan, Chunmei, et al. "Multi-functional PDMS/MMT Coating on magnesium substrates: Hydrophobicity, durability, and EMI shielding." Materials Today Communications 39 (2024): 108603.
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