{"id":75511,"date":"2005-08-07T00:00:00","date_gmt":"2005-08-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/nuevo-viscosimetro-para-el-estudio-reologico-de-suspensiones-de-fibras-aplicacion-a-la-industria-papelera\/"},"modified":"2005-08-07T00:00:00","modified_gmt":"2005-08-07T00:00:00","slug":"nuevo-viscosimetro-para-el-estudio-reologico-de-suspensiones-de-fibras-aplicacion-a-la-industria-papelera","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ingenieria-y-tecnologia-quimicas\/nuevo-viscosimetro-para-el-estudio-reologico-de-suspensiones-de-fibras-aplicacion-a-la-industria-papelera\/","title":{"rendered":"Nuevo viscosimetro para el estudio reologico de suspensiones de fibras: aplicaci\u00f3n a la industria papelera"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Rocha Echeverria Jos\u00e9 Felix <\/strong><\/h2>\n<p>La heterogeneidad de las suspensiones papeleras y la tendencia de las fibras a flocular,debido a las complejas interacciones que se producen entre los distintos componentes de la suspensi\u00f3n(fibra-fibra, fibra-finos, fibras-cargas , fibras-aditivos, etc),hacen que se formen redes tridimensionales, m\u00e1s o menos estables, incluso a muy bajas consistencias , por lo que no es posible la utilizaci\u00f3n de viscos\u00edmetros comerciales para el estudio del comportamiento reol\u00f3gico de suspensiones papeleras.Las investigaciones que se presentan en esta memoria tienen como objetivo el contribuir al avance en el conocimiento cient\u00edfico y t\u00e9cnico del comportamiento geol\u00f3gico de suspensiones papeleras.Para ello , se ha dise\u00f1ado un nuevo viscos\u00edmetro rotacional en el que la medida de la tensi\u00f3n de cizalla se realiza tanto en el eje m\u00f3vil como en el eje estacionario , es decir se mide el par aplicado por el rotor y el par trasmitido por el fluido al elemento fijo, combinando los principios se asearle y de couette.De esta manera , es posible realizar medidas directas de la viscosidad sin necesidad de calibrar previamente el equipo de medida con otros viscos\u00edmetros comerciales.Asimismo , como aportaci\u00f3n cientif\u00edca m\u00e1s importante se ha desarrollado un tratamiento matem\u00e1tico que permite describir la variaci\u00f3ndel perfil de velocidad en funci\u00f3n del esfuerzo cortante aplicado al fluido.Con el nuevo dise\u00f1o se han obtenido reogramas para suspensiones de pasta kraft de fibra corta , de fibra larga y mezclas(blanqueadas y sin blanquear), de pastas mec\u00e1nicas y recicladas en todos los casos a distintas consistencias , temperaturas y grados de refino.  por \u00faltimo , como aplicaci\u00f3n pr\u00e1ctica del viscos\u00edmetro desarrollado se han determinado las p\u00e9rdidas de carga en tuber\u00edas de distintos tipos de suspensiones papeleras a distintas consistencias<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Nuevo viscosimetro para el estudio reologico de suspensiones de fibras: aplicaci\u00f3n a la industria papelera<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Nuevo viscosimetro para el estudio reologico de suspensiones de fibras: aplicaci\u00f3n a la industria papelera <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Rocha Echeverria Jos\u00e9 Felix <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/07\/2005<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Carlos Negro Alvarez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: julio f\u00e9lix Tijero miquel <\/li>\n<li>Antonio  Luis Torres lopez (vocal)<\/li>\n<li>pere Mutje pujol (vocal)<\/li>\n<li>ignacio San p\u00edo tendero (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Rocha Echeverria Jos\u00e9 Felix La heterogeneidad de las suspensiones papeleras y la tendencia de las fibras a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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