In the development of thermoset coating and adhesive formulations, optimum cure conditions are defined based on measurements of physical properties, chemical resistance, and durability. The range of cure conditions over which a thermoset material exhibits acceptable performance constitutes a cure window for the material, and can be used to define acceptable limits of variability for production processes. There is variability intrinsic to the stoving of complex articles of manufacture: local variations in heat transfer and thermal mass result in substantial variations in temperature history. By applying chemical understanding of crosslinking processes and basic chemical engineering principles, cure strategies can be evaluated using a combination of heat transfer and chemical kinetic models. Examples drawn from research on automotive paints and adhesives are given. (C) 1997 Elsevier Science S.A.
X-Ray photoelectron spectoscopy has been used to study the structure and bonding of dinuclear oxygen-bridged copper(II) complexes. The aromatic constituency of the complexes gives rise to π * ← π shakeup satellites in the spectra of the ring carbons and the adjacent oxygen atoms. The O 1 s π * ← π shakeup satellite peak positions were determined relative to the main core level lines in samples with known structure, allowing alkoxy and phenoxy bridging to be differentiated. The methodology was applied to a dinuclear copper(II) o -hydroxybenzylamine complex of previously undefined molecular structure.
Polymeric materials are widely used to control the corrosion of metals, both to maintain appearance and to prevent loss of structural integrity. In this chapter, the fundamentals of metallic corrosion are briefly reviewed. Methods of studying corrosion, and of evaluating the performance of polymeric materials used in corrosion protection, are outlined. Factors that influence the corrosion protective performance of polymeric materials are discussed, and some of the research needs and important unsolved problems are highlighted.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCure and photodegradation of two-package acrylic/urethane coatingsDavid R. Bauer, Ray A. Dickie, and Jack L. KoenigCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 289–296Publication Date (Print):June 1, 1986Publication History Published online1 May 2002Published inissue 1 June 1986https://pubs.acs.org/doi/10.1021/i300022a028https://doi.org/10.1021/i300022a028research-articleACS PublicationsRequest reuse permissionsArticle Views273Altmetric-Citations25LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagic angle spinning carbon-13 nuclear magnetic resonance of acrylic-melamine coatingsDavid R. Bauer, Ray A. Dickie, and Jack L. KoenigCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 1, 121–126Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://doi.org/10.1021/i300017a022RIGHTS & PERMISSIONSArticle Views83Altmetric-Citations10LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (729 KB) Get e-Alerts
Application of the van der Poel equation (as recently corrected and simplified by Smith) to modulus‐composition data on polymer composites is discussed. The van der Poel equation is in good agreement with experimental results on systems for which the ratio of filler to matrix modulus is either much less than or, if the filler particles are large enough, much greater than unity. For these systems, it is shown that the van der Poel equation is essentially equivalent to an empirically modified form of the Kerner equation. Discrepancies between the van der Poel equation and experimental modulus values for the remaining systems are analyzed in terms of an effective volume fraction v eff . A functional form for v eff found to be in agreement with experimental results on several systems is: v eff = v f + k ′( v f / d ) 2/3 where v f is filler volume fraction, d is filler particle size, and k ′ is an empirical parameter. For the systems studied, k ′ ranges between 0.28 and 1 μm 2/3 .