Analisis Pengaruh Komposisi Coating Geopolimer terhadap Adhesivitas Coating
Main Article Content
Abstract
Cerobong asap yang ada dalam industri banyak terbuat dari baja. Namun, cerobong asap dengan menggunakan material baja rentan terhadap korosi kareana terpapar temperatur tinggi secara terus menerus. Korosi ini diakibatkan adhesivitas coating pada substrat kurang baik karena temperatur panas. Oleh karena itu, memerlukan jenis coating alternatif untuk menggantikan coating. Alternatif coating yang digunakan yaitu coating geopolimer. Coating geopolimer yaitu jenis coating anorganik padat yang dihasilkan dari proses reaksi kimia antara larutan basa dan aluminosilikat proses ini dinamakan dengan geopolimerisasi. Geopolimer merupakan material yang baik untuk pelapisan perlindungan berbagai permukaan termasuk pada logam karena memiliki sifat mekanis dan ketahanan api yang baik. Penelitian ini menggunakan coating geopolimer base fly ash. Pada proses coating komposisi coating sangat berpengaruh terhadap daya rekat coating. Oleh karena itu, penelitian ini menggunakan variasi komposisi dengan kandungan Si/Al 3,3 mol, 3,9 mol, dan 4,8 mol. Dari hasil penelitian didapatkan daya rekat coating paling tinggi dengan menggunakan kandungan Si/Al yaitu 4,84 MPa. Sedangkan pada kandungan Si/Al 3,3 mol memiliki daya rekat yang paling rendah yaitu 3,12 MPa. Daya rekat coating geopolimer dipengaruhi oleh Si/Al dan kadar air dalam coating.
Article Details
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlikel 4.0 International (CC BY-SA 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
References
Assi, L.N. et al. (2016) ‘Investigation of early compressive strength of fly ash-based geopolymer concrete’, Construction and Building Materials, 112, pp. 807–815. Available at: https://doi.org/10.1016/j.conbuildmat.2016.03.008.
ASTM C1240 (2020) Standard Specification for Silica Fume Used in Cementitious Mixtures 1. Available at: www.astm.org,.
ASTM D 4541 (2022) ‘Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers 1’. Available at: https://doi.org/10.1520/D4541-22.
ASTM D-4417. 2020. “Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel”. Annual Book of ASTM Standards.
Davidovits, J. (2008). Geopolymer Chemistry and Applications. France: Institut Geopolymere.
Friedman, R. (1996). Principles of Fire Protection Chemistry. Association, NewYork.
Katze, D., Zhao, Y., & Roberts, R. (2022). The Science of Adhesion Insights to Understanding Adhesive Performance. IMAPS 2022 - 55th International Symposium on Microelectronics, 99-104.
Pisarek, Z. (2019) ‘Failure of a steel boiler chimney caused by corrosion of the structural shell plate’. Available at: https://doi.org/10.1051/matecconf/201928.
Rong, X. et al. (2021) ‘Review on the Adhesion of Geopolymer Coatings’, ACS Omega, 6(8), pp. 5108–5112. Available at: https://doi.org/10.1021/acsomega.0c06343.
SSPC, 2002. Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast Cleaning. Pittsburgh: SSPC: The Society for Protective Coatings.
Temuujin, J. et al. (2010) ‘Fly ash based geopolymer thin coatings on metal substrates and its thermal evaluation’, Journal of Hazardous Materials, 180(1–3), pp. 748–752. Available at: https://doi.org/10.1016/j.jhazmat.2010.04.121.
Yong, S.L. et al. (2007) ‘Chemical characterisation of the steel-geopolymeric gel interface’, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 302(1–3), pp. 411–423. Available at: https://doi.org/10.1016/j.colsurfa.2007.03.004.