{"id":166489,"date":"2025-06-04T11:34:34","date_gmt":"2025-06-04T09:34:34","guid":{"rendered":"https:\/\/concentrol.com\/?p=166489"},"modified":"2025-06-13T09:19:58","modified_gmt":"2025-06-13T07:19:58","slug":"silicones-surfactants-de-valor-afegit","status":"publish","type":"post","link":"https:\/\/hosting175685eu-cp704.wordpresstemporal.com\/ca\/silicones-surfactants-de-valor-afegit\/","title":{"rendered":"SILICONES SURFACTANTS DE VALOR AFEGIT"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text uncode_shortcode_id=\u00bb127181″]<\/p>\n

Tal com demostra la ind\u00fastria, el poliuret\u00e0 \u00e9s un material amb una enorme varietat d’aplicacions. En aquest context, propietats com la uniformitat de l’estructura cel\u00b7lular, l’estabilitat dimensional i la compatibilitat entre els components del sistema no constitueixen merament aspectes t\u00e8cnics, sin\u00f3 par\u00e0metres cr\u00edtics que determinen el rendiment final del producte. Un exemple d\u2019aix\u00f2 el trobem en el disseny del nostre estabilitzant de silicona STB PU-2248.<\/p>\n

Aquest tensioactiu de silicona ha estat desenvolupat per anar m\u00e9s enll\u00e0 del rendiment convencional. La seva acci\u00f3 permet obtenir una estructura de cel\u00b7les fines, homog\u00e8nies i estables, optimitzant aix\u00ed les propietats mec\u00e0niques del poliuret\u00e0. Addicionalment, el STB PU-2248 presenta excel\u00b7lents propietats emulsionants i una elevada afinitat per a la incorporaci\u00f3 dels diferents additius que componen la formulaci\u00f3 del poliuret\u00e0, cosa que contribueix a una major compatibilitat de fase i una dispersi\u00f3 m\u00e9s eficient dels components del sistema.<\/p>\n

L\u2019enginyeria de l\u2019imperceptible<\/h3>\n

El STB PU-2248 actua de manera decisiva en la fase inicial del proc\u00e9s d\u2019escumat, interferint de forma controlada en formulacions que, per la seva naturalesa reactiva, tendeixen a presentar inestabilitat. Gr\u00e0cies a la seva elevada polaritat, aquest tensioactiu de silicona posseeix una notable capacitat emulsionant, fet que facilita la formaci\u00f3 d\u2019una emulsi\u00f3 m\u00e9s homog\u00e8nia i estable. Aquesta acci\u00f3 promou la nucleaci\u00f3 i el control cel\u00b7lular, donant com a resultat una estructura de cel\u00b7les fines, uniformes i ben distribu\u00efdes, la qualitat de les quals \u00e9s apreciable en l\u2019escuma resultant.<\/p>\n

En formulacions basades en aigua o que utilitzen agents escumants qu\u00edmics, el STB PU-2248 es comporta com un estabilitzant de pot\u00e8ncia mitjana a baixa, fet que el converteix en un estabilitzant ideal per a sistemes que requereixen un equilibri entre el percentatge de cel\u00b7les tancades i l\u2019estabilitat dimensional.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Producte<\/strong><\/td>\nSTB PU-2248<\/strong><\/td>\n<\/tr>\n
TIPUS<\/strong><\/td>\nSurfactant de silicona<\/td>\n<\/tr>\n
POLARITAT<\/strong><\/td>\nAlta<\/td>\n<\/tr>\n
ESTRUCTURA CEL\u00b7LULAR<\/strong><\/td>\nFina i uniforme<\/td>\n<\/tr>\n
CAPACITAT ESTABILITZADORA<\/strong><\/td>\nMitja a baixa<\/td>\n<\/tr>\n
ESTABILITAT DIMENSIONAL<\/strong><\/td>\nBona<\/td>\n<\/tr>\n
COMPATIBILITAT<\/strong><\/td>\nSistemes Water-blown i HFO<\/td>\n<\/tr>\n
APLICACIONS RECOMENDADES<\/strong><\/td>\nPanells discontinus, soles PU, escuma PU<\/td>\n<\/tr>\n
TIPUS D\u2019ESCUMA EN SPRAY<\/strong><\/td>\nCel\u00b7la tancada \u2013 2 lb\/ft\u00b3 (32 kg\/m\u00b3)<\/td>\n<\/tr>\n
IMPACTE ADDICIONAL<\/strong><\/td>\nMillora propietats ign\u00edfugues<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Proposta de valor del STB PU-2248<\/strong><\/p>\n

Un tensioactiu no pot ser avaluat \u00fanicament en condicions controlades de laboratori. El seu veritable valor es revela en entorns de formulaci\u00f3 reals, on interactua amb una complexa xarxa de variables. Entre els factors m\u00e9s determinants per al seu rendiment es troben:<\/p>\n

    \n
  • La qu\u00edmica base del poliol i l’isocianat.<\/li>\n
  • La naturalesa qu\u00edmica de l’agent escumant.<\/li>\n
  • La interacci\u00f3 amb els catalitzadors.<\/li>\n
  • L\u2019efici\u00e8ncia del proc\u00e9s de barreja, expansi\u00f3 i curat.<\/li>\n<\/ul>\n

    El STB PU-2248 ha estat dissenyat tenint en compte aquesta complexitat operativa. La seva formulaci\u00f3 li permet mantenir un rendiment estable en sistemes exigents i de processament desafiant.<\/p>\n

    Presenta un excel\u00b7lent comportament en la fabricaci\u00f3 de panells discontinus o appliances<\/em><\/strong>, on par\u00e0metres com la flu\u00efdesa (flowability<\/em>) i la uniformitat de cel\u00b7la s\u00f3n cr\u00edtics per garantir la qualitat del producte final. Igualment, en aplicacions d\u2019escuma per projecci\u00f3, com en sistemes de cel\u00b7la tancada amb densitats de 2 lb\/ft\u00b3 (\u224832 kg\/m\u00b3), facilita la generaci\u00f3 d\u2019una estructura cel\u00b7lular homog\u00e8nia, tancada i de mida redu\u00efda, optimitzant les propietats t\u00e8rmiques i mec\u00e0niques del sistema.<\/p>\n

    A m\u00e9s, la seva estabilitat qu\u00edmica en formulacions \u00e0cides o en condicions agressives el posiciona com un tensioactiu de nova generaci\u00f3, capa\u00e7 d\u2019integrar-se en formulacions altament exigents sense comprometre la integritat estructural, els est\u00e0ndards t\u00e8cnics ni el rendiment del sistema.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    [vc_row][vc_column][vc_column_text uncode_shortcode_id=\u00bb127181″] Tal com demostra la ind\u00fastria, el poliuret\u00e0 \u00e9s un material amb una enorme varietat d’aplicacions. En aquest context, […]<\/p>\n","protected":false},"author":40,"featured_media":166538,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[1020],"tags":[732,1196,1158],"class_list":["post-166489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pu-additives-ca","tag-polyurethane-ca","tag-pu-additives-ca","tag-silicone-surfactants-ca"],"acf":[],"yoast_head":"\nSILICONES SURFACTANTS DE VALOR AFEGIT<\/title>\n<meta name=\"description\" content=\"Concentrol - Chemical Solutions\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/concentrol.com\/ca\/silicones-surfactants-de-valor-afegit\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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