Controlling VOC emissions from silicone-based coatings / Stephen H. Klostermeyer in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 27, N° 4 (04/2020)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 27, N° 4 (04/2020) . - p. 16-19 Titre : Controlling VOC emissions from silicone-based coatings : For processes such as tape manufacturing, a recuperative thermal oxidizer specially designed for high levels of silicone may be most effective Type de document : texte imprimé Auteurs : Stephen H. Klostermeyer, Auteur Année de publication : 2020 Article en page(s) : p. 16-19 Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression Atmosphère -- Pollution -- Lutte contre Composés organiques volatils -- Oxydation Composés organiques volatils -- Toxicologie Oxydation thermique Rubans adhésifs 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 : 668.3 Adhésifs et produits semblables Résumé : Silicone-based coatings are among the most versatile materials used in a variety of industrial applications, including pressure-sensitive tapes, protective coatings, and the protection of printed text on packaging. They are chosen over other materials for their technical and mechanical characteristics, as well as their flexibility. Silicone-based coatings have excellent properties such as strong adhesion to most substrates and high chemical, thermal, UV, and water resistance. The application of these solvent, silicone-based paints, coatings, and adhesives releases significant levels of volatile organic compounds (VOCs) into the environment. When evaporated during the coating process, these VOCs react with nitrogen oxide (NOx) in the presence of sunlight to form ground-level ozone. As such, they are regulated as ozone precursors under the U.S. Environmental Protection Agency’s criteria pollution program. In sufficient quantities, VOCs can cause adverse effects on human health, including eye, nose, and throat irritations ; headaches ; dizziness ; visual disorders ; and memory impairment. The web coating and converting industry is a primary user of silicone-based coatings and is therefore faced with many challenges to control these air emissions from the manufacturing process. Web coating or converting involves applying specialized coatings over a variety of substrates or webs, including paper, foil, plastic, film, metal, and wire. The coating process consists of applying a coating material to a moving web of flexible substrate. Different types of coating lines may be found in each application, but broadly speaking, each system is based on a roll design and consists of a metering system for applying the coating material to the substrate, followed by a drying tunnel to dry the coated web before it is rewound. The coatings provide the substrate with enhanced aesthetic and physical properties derived from the coating material. Note de contenu : - Understanding thermal oxidation - Recuperative thermal oxidizers - Case study : pressure-sensitive tape manufacturer - Effective air pollution control En ligne : https://www.adhesivesmag.com/articles/97714-controlling-voc-emissions-from-silic [...] Format de la ressource électronique : Html Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34045 [article]

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Keeping the work atmosphere clean of volatile organic compounds / Stephen H. Klostermeyer in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 26, N° 4 (04/2019)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 26, N° 4 (04/2019) . - p. 32-34 Titre : Keeping the work atmosphere clean of volatile organic compounds : Regenerative thermal oxidizers can be the most effective and cost-efficient way to destroy VOCs in the adhesives and sealants industry Type de document : texte imprimé Auteurs : Stephen H. Klostermeyer, Auteur Année de publication : 2019 Article en page(s) : p. 32-34 Langues : Américain (ame) Catégories : Composés organiques volatils -- Oxydation Oxydants Oxydation thermique Polluants -- Détérioration Polluants atmosphériques Polluants organiques Revêtements 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 : 668.3 Adhésifs et produits semblables Résumé : The manufacture and application of solvent-based adhesives and coatings release significant emissions of volatile organic compounds (VOCs) into the environment. When evaporated, these VOCs react with nitrogen oxide (NOx) in the presence of sunlight to form ground level ozone; as such, they are regulated as an ozone precursor under the U.S. Environmental Protection Agency’s (EPA) criteria pollution program. In sufficient quantities, VOCs can cause adverse effects on human health, including eye, nose and throat irritations; headaches; dizziness; visual disorders; and memory impairment. VOCs and hazardous air pollutants (HAPs) are regulated by federal, state and local regulatory agencies through guidelines established by the Clean Air Act. The EPA has developed National Emission Standards for Hazardous Air Pollutants (NESHAP) for paint manufacturing facilities and numerous coating application industries. In general, these regulations limit the amount of VOC emissions (usually quantified in tons allowed) that can be emitted. Emissions limits differ across industries and locations. While great strides have been made by industry to reduce air pollution, including the development of water- and powder-based materials, many solvent-based coatings are necessary to improve product performance and extend product life. VOCs are typically found in the following areas in coatings manufacturing or in surface coating operations: - Coatings application stations or booths - Flash-off areas (low air movement) - Curing or bake oven exhaust (a large majority of emissions are found in this step) - Paint storage areas - Paint mix areas - Storage tanks Note de contenu : - Controlling emissions - Silicone coatings En ligne : https://www.adhesivesmag.com/articles/96877-keeping-the-work-atmosphere-clean-of [...] Format de la ressource électronique : Html Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32460 [article]

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