Characterization of membranes used in pressure driven composite processing |
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| Authors: | Solange C. Amouroux Dirk Heider John W. Gillespie |
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| Affiliation: | 1. Center for Composite Materials, University of Delaware, Newark, DE 19716, USA;2. Department of Electrical and Computer Engineering, University of Delaware, Newark, DE 19716, USA;3. Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA;4. Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA;1. Health Effects Laboratory Division, National Institute for Ocupational Safety and Health, Morgantown, WV 26505, USA;2. Education and Information Division, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA;3. Chemical and Biological Engineering Department, Colorado School of Mines, Golden, CO 80401, USA;1. Institute of Occupational Safety and Health, Council of Labor Affairs, Taipei County, Taiwan;2. Department of Occupational Safety and Health, Jen—The Junior College of Medicine, Nursing and Management, Taiwan;3. Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University, Taiwan;1. Mines ParisTech, PLS – Research University, CEMEF - Centre de Mise en Forme des Matériaux, UMR CNRS 7635, CS 10207, Rue Claude Daunesse, 06904, Sophia Antipolis Cedex, France;2. INRA, UE GCIE, Estrées-Mons, F-80203, Péronne, France;3. INRA Agrolmpact, Site d''Estrées-Mons BP 50136, 80203 Péronne Cedex, France;1. Mechanical Engineering Department, ESTG, Polytechnic Institute of Viseu, Campus Politécnico, 3510 Viseu, Portugal;2. CEMUC, Mechanical Engineering Department, University of Coimbra, Rua Luís Reis Santos 3030-788, Coimbra, Portugal;3. Mechanical Engineering Department, ESTG, Polytechnic Institute of Leiria, Morro do Lena - Alto Vieiro, 2400-901 Leiria, Portugal |
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| Abstract: | Nano-porous membranes are being used in the Vacuum Assisted Process (VAP) as a surface fluid barrier layer that provides continuous venting, reduced void content and improved process repeatability. A model to describe the membrane/resin interactions as a function of microstructure and constituent properties was presented in previous work. It enables the prediction of barrier characteristics, especially permeability, as a function membrane microstructure and process pressure. In this paper, we fully characterize six EPTFE candidate membranes for VAP. Membranes are characterized using SEM and porometry to establish pore size distributions and their corresponding Weibull fits. We will also present the permeability results for the different materials, based on our previous findings, and use this information to provide a ranking of the membranes based on their pressure capability for processes of interest. |
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