ES2527445T3 - Un material microporoso y un método de fabricación del mismo - Google Patents

Un material microporoso y un método de fabricación del mismo Download PDF

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Publication number
ES2527445T3
ES2527445T3 ES05852030.5T ES05852030T ES2527445T3 ES 2527445 T3 ES2527445 T3 ES 2527445T3 ES 05852030 T ES05852030 T ES 05852030T ES 2527445 T3 ES2527445 T3 ES 2527445T3
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Spain
Prior art keywords
sheet
filler material
inert filler
uhmwpe
matrix
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ES05852030.5T
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English (en)
Inventor
Eric H. Miller
Joseph G. Yaritz
Mark T. Demeuse
J. Kevin Whear
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Daramic LLC
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Daramic LLC
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    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
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    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
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Abstract

Un método para producir una lámina microporosa estirada que comprende las etapas de: proporcionar un polietileno de ultra alto peso molecular (UHMWPE); proporcionar un material de relleno inerte en partículas; proporcionar un plastificante de procesamiento mezclar UHMWPE, material de relleno inerte en partículas y plastificante de procesamiento juntos para formar una mezcla, con una relación en peso de material de relleno inerte a UHMWPE de desde 1:9 a 15:1 en peso; extrudir dicha mezcla para formar una lámina; procesar dicha lámina donde el procesamiento se selecciona del grupo que consiste en: calandrado, moldeado o soplado; extraer todo o parte de dicho plastificante de procesamiento de dicha lámina para producir una matriz que comprende UHMWPE y dicho material de relleno inerte en partículas, distribuyéndose el material de relleno inerte a través de dicha matriz, para producir una lámina de matriz microporosa, teniendo la matriz microporosa una red de poros interconectados que comprende entre 25-90 % en volumen de la misma; estirar dicha lámina de matriz microporosa en al menos una dirección de estiramiento a una relación de estiramiento de al menos 1,5 para producir una lámina de matriz microporosa estirada; y calandrar dicha lámina de matriz microporosa estirada.

Description

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E05852030
08-01-2015
Como se puede ver a partir de los ejemplos que siguen, el material microporoso estirado y a continuación calandrado resultante exhibe propiedades mejoradas de estabilidad dimensional en relación a una membrana que sólo se ha estirado.
Ejemplos
El Ejemplo A es una membrana que contiene lo siguiente:
Polímero
Material de Relleno Plastificante Otros Relación
UHMWPE
SiO2 Material Relleno - Polímero
Ejemplo A
Extrusión
9,6 % 25,0 % 64,0 % 1,4 % 2,6
Extracción
23,5 % 61,1 % 12,0 % 1,4 % 2,6
Ahora tomando el material del Ejemplo A se prepararon muestras adicionales usando el equipo de bastidor tensor. Este equipo permite el estiramiento uniaxial y biaxial. Se usaron los siguientes parámetros para producir estas muestras:
10 Tabla 1 Características de las Membranas Estiradas Estiramiento Neto Entramado Punzonamiento Módulo - MD Tracción - MD Alargamiento - MD Nº Muestra
% (µm) (N) (MPa) (N/mm2) % A-10 300 173 6,7 71,2 11,9 23 A-11 300 173 8,3 69,6 14,1 27 A-12 400 147 9,9 170,8 29,9 21 A-13 400 144 7,9 96,1 18,5 22 A-14 500 124 7,4 261,1 34,3 17 A-15 500 120 7,3 146,3 24,0 19 A-16 300 159 9,9 101,8 23,3 40 A-17 400 150 11,4 149,5 31,3 28 A-18 300 × 350 80 3,3 23,5 4,6 21 A-19 200 × 350 106 5,7 27,3 11,2 54
Las muestras A-18 y A-19 se estiraron biaxialmente y se produjeron usando un dispositivo de estiramiento secuencial. Las otras muestras se refieren a las membranas estiradas solamente en la dirección MD (uniaxial). 15 Tabla 2 Características de las Membranas Estiradas (Continuación)
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Claims (1)

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ES05852030.5T 2004-12-07 2005-11-22 Un material microporoso y un método de fabricación del mismo Active ES2527445T3 (es)

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US11/006,333 US7445735B2 (en) 2004-12-07 2004-12-07 Method of making microporous material
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