{"id":159810,"date":"2024-10-10T08:33:23","date_gmt":"2024-10-10T06:33:23","guid":{"rendered":"https:\/\/concentrol.com\/?p=159810"},"modified":"2024-10-10T08:33:23","modified_gmt":"2024-10-10T06:33:23","slug":"stabilisateurs-silicone-mousses-moulees-hr","status":"publish","type":"post","link":"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/fr\/stabilisateurs-silicone-mousses-moulees-hr\/","title":{"rendered":"Stabilisateurs de silicone pour les mousses moul\u00e9es HR. Faible odeur et faibles \u00e9missions"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text uncode_shortcode_id=\u00a0\u00bb703790&Prime;]<\/p>\n<h3>Introduction<\/h3>\n<p>Lors du dernier salon PU China Shanghai, au cours duquel Concentrol a expos\u00e9 ses derni\u00e8res innovations, notre Dr Adri\u00e0 L\u00f3pez, m\u00e9decin sp\u00e9cialis\u00e9 dans les tensioactifs \u00e0 base de silicone, a pr\u00e9sent\u00e9 \u00e0 tous les participants comment obtenir des \u00e9missions significativement faibles et une faible odeur dans la production de tensioactifs \u00e0 base de silicone pour les mousses moul\u00e9es HR.<\/p>\n<p>Tout d&rsquo;abord, il a d\u00e9clar\u00e9 que nous devons \u00eatre s\u00fbrs de,<\/p>\n<p><strong>Qu&rsquo;entendons-nous par \u00e9missions et lesquelles pourrions-nous consid\u00e9rer comme telles ?<\/strong><\/p>\n<ul>\n<li>Produits chimiques lib\u00e9r\u00e9s par une mousse PU dans certaines conditions<\/li>\n<li>Dans la plupart des cas, la temp\u00e9rature est la chose la plus importante. Les \u00e9claboussures d&rsquo;un v\u00e9hicule \u00e0 l&rsquo;arr\u00eat, par exemple, peuvent atteindre jusqu&rsquo;\u00e0 120 \u00baC.<\/li>\n<li>Certains produits chimiques sont tr\u00e8s volatils. Ils sont lib\u00e9r\u00e9s \u00e0 basse temp\u00e9rature, comme certains ald\u00e9hydes et aromatiques.<\/li>\n<li>D&rsquo;autres ont des limites maximales \u00e0 prendre en compte, selon la r\u00e9glementation mondiale sur les produits chimiques dangereux (en 2018, l&rsquo;ECHA a identifi\u00e9 les siloxanes cycliques D4, D5 et D6 comme SVHC ; leur limite maximale pour ces substances dans les tensioactifs \u00e0 base de silicone est d\u00e9sormais de &lt; 0,1 % en poids, pour chaque type).<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/SVHC-pictos.png\"><img decoding=\"async\" class=\"aligncenter size-medium wp-image-159697\" src=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/SVHC-pictos-300x90.png\" alt=\"\" width=\"300\" height=\"90\" srcset=\"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/SVHC-pictos-300x90.png 300w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/SVHC-pictos-350x105.png 350w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/SVHC-pictos.png 680w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/h3>\n<p><strong>Peut-on \u00e9tablir l&rsquo;origine des \u00e9missions ?<\/strong><\/p>\n<p>Le graphique suivant montre les principales mati\u00e8res premi\u00e8res utilis\u00e9es dans la fabrication de la mousse de polyur\u00e9thane souple, dont certaines pourraient contribuer \u00e0 g\u00e9n\u00e9rer des \u00e9missions pendant le processus de fabrication :<\/p>\n<p><a href=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials.png\"><img decoding=\"async\" class=\"aligncenter wp-image-159703\" src=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials-1024x554.png\" alt=\"\" width=\"699\" height=\"378\" srcset=\"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials-1024x554.png 1024w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials-300x162.png 300w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials-768x416.png 768w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials-350x190.png 350w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Emissions-Raw-Materials.png 1400w\" sizes=\"(max-width: 699px) 100vw, 699px\" \/><\/a><\/p>\n<div class=\"x_elementToProof\">\n<p>Les \u00e9missions d&rsquo;une mousse peuvent provenir des diff\u00e9rents mat\u00e9riaux utilis\u00e9s, mais elle s&rsquo;est concentr\u00e9e sur la r\u00e9duction des \u00e9missions de tensioactifs.<\/p>\n<\/div>\n<p><strong>Quelle est la m\u00e9thodologie utilis\u00e9e pour analyser les \u00e9missions ?<\/strong><\/p>\n<p>Diff\u00e9rentes m\u00e9thodes peuvent \u00eatre utilis\u00e9es pour analyser la classification des \u00e9missions :<\/p>\n<ul>\n<li><strong>M\u00e9thodes de thermod\u00e9sorption (VDA 278)<\/strong>. Uniquement pour d\u00e9terminer les \u00e9missions de TVOC.<\/li>\n<li><strong>Analyse de \u00ab\u00a0l&rsquo;espace de t\u00eate\u00a0\u00bb<\/strong>. Les COVT sont \u00e9mises \u00e0 partir d&rsquo;un \u00e9chantillon de mousse PU dans un r\u00e9cipient ferm\u00e9.<\/li>\n<li><strong>Sacs d&rsquo;\u00e9chantillonnage<\/strong>. Ils permettent de d\u00e9terminer les \u00e9missions de COVT mais aussi d&rsquo;aromatiques\/ald\u00e9hydes.<\/li>\n<li><strong>M\u00e9thodes de test de cam\u00e9ra<\/strong>. Nous faisons la distinction entre les tests effectu\u00e9s sur microcam\u00e9ras (44\/144 ml) et les tests en petite chambre (1 m\u00b3), inclus dans la norme ISO 12219-4.<\/li>\n<\/ul>\n<p>D&rsquo;autre part, des analyses telles que le VDA270 permettent l&rsquo;analyse de l&rsquo;odeur.<\/p>\n<p>Les degr\u00e9s de mesure sont class\u00e9s en\u00a0:<\/p>\n<ol>\n<li>Non perceptible<\/li>\n<li>Perceptible mai pas g\u00eanant<\/li>\n<li>Clairement perceptible, mai pas g\u00eanant<\/li>\n<li>Inqui\u00e9tant<\/li>\n<li>Tr\u00e8s ennuyeux<\/li>\n<li>Inacceptable<\/li>\n<\/ol>\n<ul>\n<li>Une autre m\u00e9thode de test sp\u00e9cifique pour l&rsquo;analyse des odeurs est consid\u00e9r\u00e9e comme le test de l&rsquo;odorat humain par rapport au nez \u00e9lectronique.<\/li>\n<\/ul>\n<p>L&rsquo;origine des \u00e9missions peut \u00eatre \u00e9tablie sous diff\u00e9rents aspects :<\/p>\n<ul>\n<li>Dans les mati\u00e8res premi\u00e8res et dans les substances non ajout\u00e9es intentionnellement (NIAS). Il convient de garder \u00e0 l&rsquo;esprit que dans ce cas, le changement de composants ne signifie pas une r\u00e9duction des odeurs.<\/li>\n<li>Dans le processus de fabrication. sous-produits de la r\u00e9action chimique. Nous pouvons utiliser des inhibiteurs pour minimiser les r\u00e9actions secondaires.<\/li>\n<li>Des produits de d\u00e9gradation dus au vieillissement de la mousse. Il en r\u00e9sulte une am\u00e9lioration de la stabilit\u00e9 au vieillissement des mati\u00e8res premi\u00e8res.<\/li>\n<\/ul>\n<h3>Compos\u00e9s aromatiques volatils<\/h3>\n<ul>\n<li>Ils peuvent provenir de solvants aromatiques utilis\u00e9s dans la synth\u00e8se.<\/li>\n<li>Bien qu&rsquo;il existe des proc\u00e9d\u00e9s industriels pour \u00e9liminer les solvants, certaines traces peuvent persister.<\/li>\n<li>Il ne faut pas s&rsquo;attendre \u00e0 ce qu&rsquo;il y ait des aromatiques dans les mati\u00e8res premi\u00e8res siloxane ou polyester, compte tenu de leurs voies de synth\u00e8se.<\/li>\n<li><strong>La synth\u00e8se de tensioactifs silicones sans solvants aromatiques est la garantie que nous avons d&rsquo;\u00e9viter les compos\u00e9s aromatiques volatils dans le tensioactif.<\/strong><\/li>\n<\/ul>\n<p>Concentrol <strong>n&rsquo;utilise pas<\/strong> de\u00a0 solvants aromatiques dans sa cha\u00eene de production.<\/p>\n<h3><strong>Compos\u00e9s carbonyl\u00e9s volatils (ald\u00e9hydes)<\/strong><\/h3>\n<ul>\n<li>Les compos\u00e9s carbonyl\u00e9s volatils peuvent provenir de la d\u00e9gradation de certaines substances chimiques.<\/li>\n<li>Les poly\u00e9thers sont la principale source de compos\u00e9s carbonyl\u00e9s, en raison de leur voie de d\u00e9gradation via l&rsquo;oxydiatob des liaisons C-O-C.<\/li>\n<li>Les polysilxanes, bien qu&rsquo;apparent\u00e9s aux siloxanes de faible MW, ne sont pas consid\u00e9r\u00e9s comme une source de compos\u00e9s carbonyl\u00e9s en raison de leur structure chimique.<\/li>\n<li>Une teneur \u00e9lev\u00e9e en siloxane dans un tensioactif et une faible teneur en polyester contribuent \u00e0 la r\u00e9duction des \u00e9missions de carbone.<\/li>\n<\/ul>\n<h3>M\u00e9thodologie<\/h3>\n<h4>Analyse des tensioactifs \u00e0 base de silicone<\/h4>\n<p>Les principaux aspects que nous devons prendre en compte dans la fabrication d&rsquo;un tensioactif \u00e0 base de silicone sont :<\/p>\n<ol>\n<li>Analyse des \u00e9missions de tensioactifs\n<ol>\n<li>Composants organiques volatils<\/li>\n<li>Ald\u00e9hydes et aromatiques<\/li>\n<li>Odeurs<\/li>\n<\/ol>\n<\/li>\n<li>Performance du polyu\u00e9thane dans la nouvelle g\u00e9n\u00e9ration de tensioactifs \u00e0 base de silicone<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>ANALYSE DES \u00c9MISSIONS DE TENSIOACTIFS<\/p>\n<p>Voici quelques exemples de m\u00e9thodologie d&rsquo;analyse :<\/p>\n<p><a href=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions.png\"><img decoding=\"async\" class=\"aligncenter wp-image-159747\" src=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions-1024x350.png\" alt=\"\" width=\"1007\" height=\"344\" srcset=\"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions-1024x350.png 1024w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions-300x103.png 300w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions-768x263.png 768w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions-350x120.png 350w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Emissions.png 1310w\" sizes=\"(max-width: 1007px) 100vw, 1007px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor.png\"><img decoding=\"async\" class=\"wp-image-159733 aligncenter\" src=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor-1024x349.png\" alt=\"\" width=\"772\" height=\"263\" srcset=\"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor-1024x349.png 1024w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor-300x102.png 300w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor-768x262.png 768w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor-350x119.png 350w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-Odor.png 1424w\" sizes=\"(max-width: 772px) 100vw, 772px\" \/><\/a><\/p>\n<p>Dans l&rsquo;\u00e9chantillon d&rsquo;analyse pr\u00e9c\u00e9dent, nous soulignons les aspects suivants :<\/p>\n<ul>\n<li>Deux diluants diff\u00e9rents ont \u00e9t\u00e9 \u00e9valu\u00e9s<\/li>\n<li>Bien qu&rsquo;ils aident \u00e0 r\u00e9duire les \u00e9missions d&rsquo;ald\u00e9hydes et d&rsquo;aromatiques, les inhibiteurs n&rsquo;affectent pas la contribution des odeurs.<\/li>\n<li>Le rendement du diluant A est l\u00e9g\u00e8rement sup\u00e9rieur \u00e0 celui du diluant B.<\/li>\n<\/ul>\n<p>ANALYSE DES PERFORMANCES DU POLYUR\u00c9THANE<\/p>\n<p><a href=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance.png\"><img decoding=\"async\" class=\"aligncenter wp-image-159740\" src=\"https:\/\/concentrol.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance-1024x616.png\" alt=\"\" width=\"654\" height=\"393\" srcset=\"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance-1024x616.png 1024w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance-300x180.png 300w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance-768x462.png 768w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance-350x211.png 350w, https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/wp-content\/uploads\/2024\/10\/Analysis-of-PU-Performance.png 1370w\" sizes=\"(max-width: 654px) 100vw, 654px\" \/><\/a><\/p>\n<h2><\/h2>\n<h2>R\u00c9SUM\u00c9 ET PRINCIPALES CONSID\u00c9RATIONS<\/h2>\n<ul>\n<li><strong>Le diluant affecte directement les \u00e9missions d&rsquo;ald\u00e9hydes\/aromatiques et les odeurs<\/strong><\/li>\n<li><strong>Les inhibiteurs peuvent aider \u00e0 r\u00e9duire les \u00e9missions d&rsquo;ald\u00e9hydes et d&rsquo;aromatiques, mais pas \u00e0 les \u00e9liminer compl\u00e8tement<\/strong><\/li>\n<li><strong>De nouvelles voies de d\u00e9tection alternatives apparaissent pour r\u00e9duire les \u00e9missions et les odeurs dans la fabrication du PU<\/strong><\/li>\n<li><strong>Les COVT sont plus directement li\u00e9s \u00e0 la conception du tensioactif \u00e0 base de silicone<\/strong><\/li>\n<li><strong>Il est possible de r\u00e9duire les \u00e9missions sans affecter les performances du PU<\/strong><\/li>\n<\/ul>\n<h5 style=\"text-align: center;\">AUTEUR : Dr. Adri\u00e0 L\u00f3pez, sp\u00e9cialiste en tensioactifs silicones &#8211; R+D+I, Concentrol<\/h5>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column column_width_percent=\u00a0\u00bb100&Prime; gutter_size=\u00a0\u00bb3&Prime; overlay_alpha=\u00a0\u00bb50&Prime; shift_x=\u00a0\u00bb0&Prime; shift_y=\u00a0\u00bb0&Prime; shift_y_down=\u00a0\u00bb0&Prime; z_index=\u00a0\u00bb0&Prime; medium_width=\u00a0\u00bb0&Prime; mobile_width=\u00a0\u00bb0&Prime; width=\u00a0\u00bb1\/1&Prime; uncode_shortcode_id=\u00a0\u00bb114180&Prime;][vc_single_image media=\u00a0\u00bb159833&Prime; media_width_percent=\u00a0\u00bb100&Prime; uncode_shortcode_id=\u00a0\u00bb131857&Prime;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text uncode_shortcode_id=\u00a0\u00bb703790&Prime;] Introduction Lors du dernier salon PU China Shanghai, au cours duquel Concentrol a expos\u00e9 ses derni\u00e8res innovations, notre [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":159836,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[1024],"tags":[320,812,736],"class_list":["post-159810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pu-additives-fr","tag-automotive-industry-fr","tag-concentrol-fr","tag-polyurethane-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stabilisateurs de silicone pour les mousses moul\u00e9es HR. 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