PEMANFAATAN EKSTRAK KULIT KAKAO SEBAGAI ADITIF CAT UNTUK PENGENDALIAN  LAJU KOROSI PADA PAKU KONSTRUKSI KAPAL KAYU

Harri Biora Putra; Jon Affi Affi; Gunawarman Gunawarman; Yuli Yetri

doi:10.35314/ip.v8i1.272

PEMANFAATAN EKSTRAK KULIT KAKAO SEBAGAI ADITIF CAT UNTUK PENGENDALIAN LAJU KOROSI PADA PAKU KONSTRUKSI KAPAL KAYU

Harri Biora Putra⁽¹⁾, Jon Affi Affi⁽²⁾, Gunawarman Gunawarman^(3*), Yuli Yetri⁽⁴⁾

(1) Dinas Perhubungan
(2) Universitas Andalas
(3) Universitas Andalas
(4) Politeknik Negeri Padang
(*) Corresponding Author

Abstract

Corrosion on wooden nails is very detrimental because it shortens the life of the ship. Although the used spikes have been coated with corrosion resistance material, corrosion rate is still very harmful. Therefore that additional effort is required for reducing the corrosion rate of these spikes. Research has been done by comparing the giving of cocoa peels extract as a paint mixer to corrosion rate. As a comparison has also been done nails without paint and nails painted without additional cocoa peels extract. Calculation of corrosion rate is done by weight loss method. The addition of cocoa peels extract showed significant effect on corrosion rate, it can be explained cocoa peels containing secondary metabolite compound one of them is tannin. The tannin compound in the extract can form complex compounds with Fe (III) on the metal surface, so that the corrosion reaction rate will decreas.Keywords: cocoa peels extract, corrosion, weight loss.

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References

Julianto E, Efektivitas Penggunaan Anoda Korban Paduan Alumunium Pada Pelat Baja Kapal AISI E 2512 Terhadap Laju Korosi di Dalam Media Air Laut, Thesis, Program Pascasarjana, UNDIP, 2010;

Yetri Y, dkk, Corrosion behavior environemtal friendly inhibitor using Theobroma cacao peels extract for mild steel in NaCl 1.5 M, Journal of Environment Asia 9(1)(2016)45-59;

Hermawan S, dkk, Penentuan Efisiensi Inhibisi Korosi Baja Menggunakan Ekstrak Kulit Buah Kakao (Theobroma Cacao).;

Mafinora A, dkk, Pengaruh Konsentrasi Inhibitor Ekstrak Daun Kakao (Theobroma cacao) Terhadap Laju Korosi Baja Hardox 450, Jurnal Fisika UNAND, Vol.3, 4 Oktober 2014.

Gunawarman, Yuli Yetri, Emriadi, Novesar Jamarun, Ken-Cho, M. Nakai and M. Niinomi, Effect of polar extract of cocoa peels inhibitor on mechanical properties and microstructure of mild steel exposed in hydroclorid acid, Applied mechanical and materials vol. 776 (2015) pp 193-200.

Standar Operasi Prosedur Spektrometer.

Muliati, Reaktivitas Hidroksil Tanin Kulit Buah Kakao pada Pewarnaan Sutra, Jurnal Industri Hasil Perkebunan. Vol. 4, No. 1, Makassar, 2009

. Laporan hasil uji BALAI RISET DAN STANDARISASI INSDUSTRI PADANG, 08 Juni 2017, SNI 7644-2010.

DOI: https://doi.org/10.35314/ip.v8i1.272