Analisis Pengaruh Komposisi Coating Geopolimer terhadap Adhesivitas Coating

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Published Oct 17, 2024
DOI https://doi.org/10.35991/master%20ppns.v9i1.3070

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Gusma Hamdana Putra
Firman Bakti Prasetiyo
Wiwik Dwi Pratiwi
Mochammad Karim Al Amin
Dika Anggara

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

Issue
Vol 9 No 1 (2024): Seminar Master 2024
Section
MASTER 2024
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