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Self-Stratified Coatings

Self-Stratified Coatings
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A homogeneous mixture of two immiscible polymeric binders were dissolved in a common solvent or a mixture of solvents was applied as a thin film. The first polymeric binder was a bisphenol-A (BPA) based epoxide, epoxide modified with tetraethoxysilane (TEOS) oligomer, or phosphated epoxide. The second polymeric binder was a fluorinated acrylic copolymer. 

Product Number: 41213-791-SG
Author: Mark D. Soucek, Elif Alyamac, Hua Gu
Publication Date: 2013
Industry: Coatings
$0.00
$20.00
$20.00

A homogeneous mixture of two immiscible polymeric binders were dissolved in a common solvent or a mixture of solvents was applied as a thin film. The first polymeric binder was a bisphenol-A (BPA) based epoxide, epoxide modified with tetraethoxysilane (TEOS) oligomer, or phosphated epoxide. The second polymeric binder was a fluorinated acrylic copolymer. The mixture was coated on steel substrates via spray and slow casting techniques and then was thermally crosslinked using a methylated melamine formaldehyde and a polyamide curing agents. During the film formation process, a self-stratified three phase coatings was observed. The films were evaluated via X-ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy (SEM) with integrated Energy Dispersive Spectroscopy (EDS). It was found that the molecular weight of the resins, fluorine content, epoxide inorganic modification, curing agents, and processing parameters are all the factors that affected the degree of stratification.

A homogeneous mixture of two immiscible polymeric binders were dissolved in a common solvent or a mixture of solvents was applied as a thin film. The first polymeric binder was a bisphenol-A (BPA) based epoxide, epoxide modified with tetraethoxysilane (TEOS) oligomer, or phosphated epoxide. The second polymeric binder was a fluorinated acrylic copolymer. The mixture was coated on steel substrates via spray and slow casting techniques and then was thermally crosslinked using a methylated melamine formaldehyde and a polyamide curing agents. During the film formation process, a self-stratified three phase coatings was observed. The films were evaluated via X-ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy (SEM) with integrated Energy Dispersive Spectroscopy (EDS). It was found that the molecular weight of the resins, fluorine content, epoxide inorganic modification, curing agents, and processing parameters are all the factors that affected the degree of stratification.

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