Modified tannins for alkyd based anticorrosive coatings
The study of the synthesis of anticorrosive inhibitors, based on chemically modified tannins, and their use in alkyd based coatings to improve anticorrosive properties is presented in this work. Two methods of tannin modification were applied: direct method using ammonium hydroxide, ammonium hydroxi...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Engineering Society for Corrosion, Belgrade
2019-03-01
|
| Series: | Zaštita Materijala |
| Subjects: | |
| Online Access: | https://www.zastita-materijala.org/index.php/home/article/view/339 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850226499654778880 |
|---|---|
| author | Jovanka N. Kovačina Mladen D. Bugarčić Tihomir M. Kovačević Aleksandar D. Marinković |
| author_facet | Jovanka N. Kovačina Mladen D. Bugarčić Tihomir M. Kovačević Aleksandar D. Marinković |
| author_sort | Jovanka N. Kovačina |
| collection | DOAJ |
| description | The study of the synthesis of anticorrosive inhibitors, based on chemically modified tannins, and their use in alkyd based coatings to improve anticorrosive properties is presented in this work. Two methods of tannin modification were applied: direct method using ammonium hydroxide, ammonium hydroxide/ammonium chloride buffer or diethylenetriamine (DETA); and a two-step method including tannin modification with epichlorohydrin (ECH) in first step to produce epoxy modified tannin, ET, and further modification with heteroaromatic amines or linseed oil fatty acids (LFA) in second step. The obtained anticorrosive additives were characterized using ATR-FTIR, 1H and 13C NMR spectroscopies and elemental analysis. Epoxy, amino, hydroxyl, acid and iodine values of the synthesized inhibitors were determined according to standard methods. The prepared alkyd coating with tannin inhibitors was tested according to standard SRPS EN ISO 4628 method. Anticorrosive coating containing modified tannin based additive showed increased anticorrosive properties, good adhesion and coverage comparing to the coating with zinc phosphate additive. The alkyd coating films based on ET-LFA and ET modified with 2-amino-5-mercapto-1,3,4-thiadiazole showed best anticorrosive results. |
| format | Article |
| id | doaj-art-ef5ba8e6c6fa42ddad6a5dc54077d539 |
| institution | OA Journals |
| issn | 0351-9465 2466-2585 |
| language | English |
| publishDate | 2019-03-01 |
| publisher | Engineering Society for Corrosion, Belgrade |
| record_format | Article |
| series | Zaštita Materijala |
| spelling | doaj-art-ef5ba8e6c6fa42ddad6a5dc54077d5392025-08-20T02:05:03ZengEngineering Society for Corrosion, BelgradeZaštita Materijala0351-94652466-25852019-03-01601819510.5937/zasmat1901081M338Modified tannins for alkyd based anticorrosive coatingsJovanka N. Kovačina0Mladen D. Bugarčić1Tihomir M. Kovačević2Aleksandar D. Marinković3University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM, SerbiaInstitute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade, SerbiaMilitary Technical Institute - MTI, Belgrade, SerbiaUniversity of Belgrade, Faculty of Technology and Metallurgy, Department of Organic Chemistry, SerbiaThe study of the synthesis of anticorrosive inhibitors, based on chemically modified tannins, and their use in alkyd based coatings to improve anticorrosive properties is presented in this work. Two methods of tannin modification were applied: direct method using ammonium hydroxide, ammonium hydroxide/ammonium chloride buffer or diethylenetriamine (DETA); and a two-step method including tannin modification with epichlorohydrin (ECH) in first step to produce epoxy modified tannin, ET, and further modification with heteroaromatic amines or linseed oil fatty acids (LFA) in second step. The obtained anticorrosive additives were characterized using ATR-FTIR, 1H and 13C NMR spectroscopies and elemental analysis. Epoxy, amino, hydroxyl, acid and iodine values of the synthesized inhibitors were determined according to standard methods. The prepared alkyd coating with tannin inhibitors was tested according to standard SRPS EN ISO 4628 method. Anticorrosive coating containing modified tannin based additive showed increased anticorrosive properties, good adhesion and coverage comparing to the coating with zinc phosphate additive. The alkyd coating films based on ET-LFA and ET modified with 2-amino-5-mercapto-1,3,4-thiadiazole showed best anticorrosive results.https://www.zastita-materijala.org/index.php/home/article/view/339modified tanninanticorrosion additivecorrosionalkyd coating |
| spellingShingle | Jovanka N. Kovačina Mladen D. Bugarčić Tihomir M. Kovačević Aleksandar D. Marinković Modified tannins for alkyd based anticorrosive coatings Zaštita Materijala modified tannin anticorrosion additive corrosion alkyd coating |
| title | Modified tannins for alkyd based anticorrosive coatings |
| title_full | Modified tannins for alkyd based anticorrosive coatings |
| title_fullStr | Modified tannins for alkyd based anticorrosive coatings |
| title_full_unstemmed | Modified tannins for alkyd based anticorrosive coatings |
| title_short | Modified tannins for alkyd based anticorrosive coatings |
| title_sort | modified tannins for alkyd based anticorrosive coatings |
| topic | modified tannin anticorrosion additive corrosion alkyd coating |
| url | https://www.zastita-materijala.org/index.php/home/article/view/339 |
| work_keys_str_mv | AT jovankankovacina modifiedtanninsforalkydbasedanticorrosivecoatings AT mladendbugarcic modifiedtanninsforalkydbasedanticorrosivecoatings AT tihomirmkovacevic modifiedtanninsforalkydbasedanticorrosivecoatings AT aleksandardmarinkovic modifiedtanninsforalkydbasedanticorrosivecoatings |