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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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Self-Healing Systems for Industrial and Marine Protective Coatings
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Self-Healing Systems for Industrial and Marine Protective Coatings

Product Number: 41211-584-SG
Author: Gerald O. Wilson, H. Magnus Andersson
Publication Date: 2011
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 Truly self-healing materials have the capability to repair themselves when they are damaged without the need for any external intervention. Self-healing systems based on microencapsulated healing agents developed by researchers at the University of Illinois at Urbana-Champaign were initially developed with polymerized resins and reinforced polymer composites as the intended applications. In this paper, we discuss the principles that emerged in the design of these self-healing systems and how they are presently used in design and optimization of self-healing systems for industrial and marine protective coatings.
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Steps to a More Effective Blasting Operation

Product Number: 41213-730-SG
Author: Kumar Balan
Publication Date: 2013
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Shot blasting as a mechanical surface preparation process is widely used in finishing metallic parts. Sophistication in the use of this technique could range from simple manual systems to computer-controlled equipment for preparing aerospace and automotive components. 
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Surface Comparison Profile - A Comparison of Measurement Methods

Product Number: 41213-731-SG
Author: David Beamish
Publication Date: 2013
$20.00

Coating performance is related to the profile height on a steel surface. Three types of devices are available to take measurements of this surface profile: replica tape, depth micrometers fitted with pointed probes, and stylus roughness testers. This paper presents results from a recent analysis of measurements taken by the three device types on steel blasted with an assortment of blast media and proposes a new method of depth micrometer measurement called average of the maximum peaks.
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