Balancing performance of slip/mar additives using a high throughput approach / Mark Langille in COATINGS TECH, Vol. 15, N° 5 (05/2018)  

[article]  inCOATINGS TECH > Vol. 15, N° 5 (05/2018) . - p. 52-56 Titre : Balancing performance of slip/mar additives using a high throughput approach Type de document : texte imprimé Auteurs : Mark Langille, Auteur ; Aslin Izmitli, Auteur ; Tian Lan, Auteur ; Akanksha Agrawal, Auteur ; Chun Liu, Auteur ; Kevin Henderson, Auteur ; Yujie Lu, Auteur Année de publication : 2018 Article en page(s) : p. 52-56 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements Brillance (optique) -- Mesure Effet antidérapant Frottements (mécanique) Rayures Résistance à l'abrasion Revêtements -- Additifs:Peinture -- Additifs Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : Additives formulating can be resource intensive and time con-suming to paint manufacturers due to the plethora of ingredient combinations and interactions that affect performance properties. These challenges may inhibit the efficacy of selected additives, which are particularly important in low-VOC formulations to address foam control, water sensitivity, and general surface properties. Silicone additives in particular are disproportionately influential in impacting film properties at low use levels given the materials distinct chemistry. High throughput methodologies have been developed to screen and identify top performing additives candidates to address desired performance targets. The use of slip/mar additives has been a recent area of focus, with high throughput methods aiding in the exploration of additive impact on properties that include friction coefficients, mar and abrasion resistance, hardness, surface defects, and clarity. This work addresses the development of these methods and identifies top classes of silicone chemistries to balance desired film performance in wood coatings formulations. Note de contenu : - Fig. 1 : The formation of a mar or scratch on a coating - Fig. 2 : The surface morphology of a coating damaged with increasing force, showing the first indications of mar and scratch damage - Fig. 3 : Instrument for testing mar resistance of coatings as recommended in ASTM D5178 - Fig. 4 : Average kinetic friction coefficient of coatings with various slip/mar additives - Fig. 5 : Average static friction coefficient of coatings with various slip/mar additives - Fig. 6 : Mar resistance of coatings with various slip/mar additives - Fig. 7 : Scratch resistance of coatings with various slip/mar additives - Fig. 8 : Gloss measurements of coatings formulated with various slip/mar additives En ligne : https://drive.google.com/file/d/1zGhAxQ5VsZaMsch-2u_Bbf4r8WcgOVvv/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30626 [article]

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Improving indoor air quality with amino alcohols / Mark Langille in SURFACE COATINGS INTERNATIONAL, Vol. 106.1 (01-02/2023)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 106.1 (01-02/2023) . - p. 52-55 Titre : Improving indoor air quality with amino alcohols Type de document : texte imprimé Auteurs : Mark Langille, Auteur ; Romain Severac, Auteur Année de publication : 2023 Article en page(s) : p. 52-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Air -- Epuration Air intérieur Amino-alcools Dépolluants Formaldéhyde -- Elimination Formulation (Génie chimique) Matériaux -- Propriétés fonctionnelles Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Revêtements intérieurs:Peinture intérieure Index. décimale : 667.9 Revêtements et enduits Résumé : Amino alcohols based on ANGUS chemistry can assist formulators in creating more environmentally-friendly paints and coatings. Multifunctional additives from ANGUS can be used to create low- and zero-VOC waterborne formulations, as well as low emissive coatings that qualify for green label certification programs. Amino alcohols are also highly effective formaldehyde scavengers that can be used to create functional coatings that improve indoor air quality.The level of hazardous air pollutants can be five times higher in indoor air than outdoor air and chronic exposure to these invisible indoor toxins, such as formaldehyde, can create long-term health problems. An attractive solution to reducing indoor formaldehyde levels is through a chemical remediation or scavenging system, and one of the emerging trends for the effective removal of indoor air contaminants is the use of functional coatings. We demonstrate how the unique functionality of amino alcohols can help improve indoor air quality by providing high-efficiency formaldehyde scavenging performance when used in waterborne architectural paints. Amino alcohol additives are highly effective at low dosages and do not require major reformulation work, enabling the creation of functional coatings to improve indoor air quality. Note de contenu : - ANGUS products for improving indoor air quality - Methodology - Formaldehyde Scavenging Test by ISO 16000-23 - Results - Table 1 : Base waterborne formulation - Table 2 : Performance of coatings formulations according to Chinese JC/T 1074-2008 standard - Fig. 1 : The evolution of more environmentally-friendly paints and the emergence of VOC remediation technologies - Fig. 2 : Analysis of airborne VOC concentrations in residences, daycare centres and schools in France - Fig. 3 : Reaction of AEPD VOX 1000 with two equivalents of formaldehyde to yield a bisoxazolidine - Fig. 4 : Reaction of TRIS AMINO with two equivalents yield a bisoxazolidine - Fig. 5 : Schematic of a small-scale testing chamber to monitor formaldehyde scavenging performance of a coating - Fig. 6 : Evaluation of scavenging performance according to 150 16000-23 test method En ligne : https://drive.google.com/file/d/1OxJWCAJhoNmjnT-pN6mzI03-xnzhdkXt/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38874 [article]

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