Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors

Automotive coatings, which comprise multiple layers, i.e., primer, base coating, and clear coat layers, are exposed to various environmental conditions that pose various types of damages to them. In particular, the outer layer of the automotive coating, i.e., the clear coat, is affected significantl...

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Autores principales:	Sung Wook Moon, Jiae Seo, Ji-Hun Seo, Byoung-Ho Choi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	scratch automotive coat polyrotaxane silane functional group high temperature ultraviolet Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/6ee2bb4f2c294b3a9e24a02e9e3ae6cb
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spelling	oai:doaj.org-article:6ee2bb4f2c294b3a9e24a02e9e3ae6cb2021-11-25T18:48:28ZScratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors10.3390/polym132239332073-4360https://doaj.org/article/6ee2bb4f2c294b3a9e24a02e9e3ae6cb2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3933https://doaj.org/toc/2073-4360Automotive coatings, which comprise multiple layers, i.e., primer, base coating, and clear coat layers, are exposed to various environmental conditions that pose various types of damages to them. In particular, the outer layer of the automotive coating, i.e., the clear coat, is affected significantly by such damages. Therefore, a reliable and durable clear coat must be developed to improve the appearance of automobiles. In this study, a new clear coat based on an acrylic-based clear coat modified using polyrotaxane crosslinkers, which are necklace-shaped supramolecules composed of ring-shaped host molecules, is developed and characterized. The effects of polyrotaxane and silane on the scratch properties and mechanisms of the clear coating are analyzed. It is observed that the critical loads of the clear coat from scratch tests can be improved by adding optimal molecular necklace crosslinkers comprising silane functional groups. The improvement in the scratch properties of the modified acrylic-based clear coat may be attributed to the crosslinking characteristics and dynamic molecular movements of the polyrotaxane. In addition, the effects of environmental factors on the scratch characteristics of the modified acrylic-based clear coat are investigated by addressing the scratch durability of the clear coat.Sung Wook MoonJiae SeoJi-Hun SeoByoung-Ho ChoiMDPI AGarticlescratchautomotive coatpolyrotaxanesilane functional grouphigh temperatureultravioletOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3933, p 3933 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	scratch automotive coat polyrotaxane silane functional group high temperature ultraviolet Organic chemistry QD241-441
spellingShingle	scratch automotive coat polyrotaxane silane functional group high temperature ultraviolet Organic chemistry QD241-441 Sung Wook Moon Jiae Seo Ji-Hun Seo Byoung-Ho Choi Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
description	Automotive coatings, which comprise multiple layers, i.e., primer, base coating, and clear coat layers, are exposed to various environmental conditions that pose various types of damages to them. In particular, the outer layer of the automotive coating, i.e., the clear coat, is affected significantly by such damages. Therefore, a reliable and durable clear coat must be developed to improve the appearance of automobiles. In this study, a new clear coat based on an acrylic-based clear coat modified using polyrotaxane crosslinkers, which are necklace-shaped supramolecules composed of ring-shaped host molecules, is developed and characterized. The effects of polyrotaxane and silane on the scratch properties and mechanisms of the clear coating are analyzed. It is observed that the critical loads of the clear coat from scratch tests can be improved by adding optimal molecular necklace crosslinkers comprising silane functional groups. The improvement in the scratch properties of the modified acrylic-based clear coat may be attributed to the crosslinking characteristics and dynamic molecular movements of the polyrotaxane. In addition, the effects of environmental factors on the scratch characteristics of the modified acrylic-based clear coat are investigated by addressing the scratch durability of the clear coat.
format	article
author	Sung Wook Moon Jiae Seo Ji-Hun Seo Byoung-Ho Choi
author_facet	Sung Wook Moon Jiae Seo Ji-Hun Seo Byoung-Ho Choi
author_sort	Sung Wook Moon
title	Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
title_short	Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
title_full	Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
title_fullStr	Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
title_full_unstemmed	Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors
title_sort	scratch properties of clear coat for automotive coating comprising molecular necklace crosslinkers with silane functional groups for various environmental factors
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6ee2bb4f2c294b3a9e24a02e9e3ae6cb
work_keys_str_mv	AT sungwookmoon scratchpropertiesofclearcoatforautomotivecoatingcomprisingmolecularnecklacecrosslinkerswithsilanefunctionalgroupsforvariousenvironmentalfactors AT jiaeseo scratchpropertiesofclearcoatforautomotivecoatingcomprisingmolecularnecklacecrosslinkerswithsilanefunctionalgroupsforvariousenvironmentalfactors AT jihunseo scratchpropertiesofclearcoatforautomotivecoatingcomprisingmolecularnecklacecrosslinkerswithsilanefunctionalgroupsforvariousenvironmentalfactors AT byounghochoi scratchpropertiesofclearcoatforautomotivecoatingcomprisingmolecularnecklacecrosslinkerswithsilanefunctionalgroupsforvariousenvironmentalfactors
_version_	1718410650990936064

Scratch Properties of Clear Coat for Automotive Coating Comprising Molecular Necklace Crosslinkers with Silane Functional Groups for Various Environmental Factors

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