Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method

In present study, the adhesion strength of polyurethane and alkyd coatings on the poplar wood (Populus nigra) was improved by nano-silane coating using sol-gel method for outdoor application. For this purpose, the boards with dimensions of 15 × 10 × 2 mm were prepared according to EN 927-5. The surf...

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Autores principales:	Hadi gholamian, Asghar Tarmian, Ali Abdulkhani
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2017
Materias:	sol-gel alkyd and polyurethane coating Adhesion weathering Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/639c7cad3a0444b4a3413bb8680f2a2a
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id	oai:doaj.org-article:639c7cad3a0444b4a3413bb8680f2a2a
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spelling	oai:doaj.org-article:639c7cad3a0444b4a3413bb8680f2a2a2021-12-02T02:21:34ZImprovement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method1735-09132383-112X10.22092/ijwpr.2017.108093.1367https://doaj.org/article/639c7cad3a0444b4a3413bb8680f2a2a2017-10-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_112019_de571784e836555ff309221eb976d2a3.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XIn present study, the adhesion strength of polyurethane and alkyd coatings on the poplar wood (Populus nigra) was improved by nano-silane coating using sol-gel method for outdoor application. For this purpose, the boards with dimensions of 15 × 10 × 2 mm were prepared according to EN 927-5. The surfaces of wood specimens were modified with Tetraethoxy‌silane (T) sol-gel material and then, solvent-borne alkyd (AS) and solvent-borne polyurethane (PS) coatings were applied. The coated samples were placed outdoor on a platform with a slope close to Karaj latitude (36̊) for 8 months according to ISO 877 standard. In order to characterize the quality of the coatings, colorimetric, tensile adhesion (Pull off), scratch adhesion (Cross cut) and ATR-FTIR tests were performed before and after weathering. The ATR-FTIR analysis demonstrated that the wood surface was covered with silicon oxides (SiO2) attached to hydrocarbon chains. As a result of surface wood modification by sol-gel, the color and adhesion strength of polyurethane and alkyd coatings were less affected by weathering. The highest tensile and scratch adhesions were found for the combined sol-gel and polyurethane coatings.Hadi gholamianAsghar TarmianAli AbdulkhaniRegional Information Center for Science and Technology (RICeST)articlesol-gelalkyd and polyurethane coatingAdhesionweatheringForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 32, Iss 3, Pp 322-333 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	sol-gel alkyd and polyurethane coating Adhesion weathering Forestry SD1-669.5
spellingShingle	sol-gel alkyd and polyurethane coating Adhesion weathering Forestry SD1-669.5 Hadi gholamian Asghar Tarmian Ali Abdulkhani Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
description	In present study, the adhesion strength of polyurethane and alkyd coatings on the poplar wood (Populus nigra) was improved by nano-silane coating using sol-gel method for outdoor application. For this purpose, the boards with dimensions of 15 × 10 × 2 mm were prepared according to EN 927-5. The surfaces of wood specimens were modified with Tetraethoxy‌silane (T) sol-gel material and then, solvent-borne alkyd (AS) and solvent-borne polyurethane (PS) coatings were applied. The coated samples were placed outdoor on a platform with a slope close to Karaj latitude (36̊) for 8 months according to ISO 877 standard. In order to characterize the quality of the coatings, colorimetric, tensile adhesion (Pull off), scratch adhesion (Cross cut) and ATR-FTIR tests were performed before and after weathering. The ATR-FTIR analysis demonstrated that the wood surface was covered with silicon oxides (SiO2) attached to hydrocarbon chains. As a result of surface wood modification by sol-gel, the color and adhesion strength of polyurethane and alkyd coatings were less affected by weathering. The highest tensile and scratch adhesions were found for the combined sol-gel and polyurethane coatings.
format	article
author	Hadi gholamian Asghar Tarmian Ali Abdulkhani
author_facet	Hadi gholamian Asghar Tarmian Ali Abdulkhani
author_sort	Hadi gholamian
title	Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
title_short	Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
title_full	Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
title_fullStr	Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
title_full_unstemmed	Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
title_sort	improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2017
url	https://doaj.org/article/639c7cad3a0444b4a3413bb8680f2a2a
work_keys_str_mv	AT hadigholamian improvementofadhesionstrengthofpolyurethaneandalkydcoatingsbynanosilaneusingsolgelmethod AT asghartarmian improvementofadhesionstrengthofpolyurethaneandalkydcoatingsbynanosilaneusingsolgelmethod AT aliabdulkhani improvementofadhesionstrengthofpolyurethaneandalkydcoatingsbynanosilaneusingsolgelmethod
_version_	1718402529649229824

Improvement of adhesion strength of polyurethane and alkyd coatings by nano-silane using sol-gel method

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