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Absorption and diffusion of humidity in fiberglass-reinforced polyamide

2005; Wiley; Volume: 26; Issue: 5 Linguagem: Inglês

10.1002/pc.20134

1548-0569

I. Carrascal, J.A. Casado, J.A. Polanco, F. Gutiérrez‐Solana,

Polymer Nanocomposites and Properties

Polymer CompositesVolume 26, Issue 5 p. 580-586 Article Absorption and diffusion of humidity in fiberglass-reinforced polyamide I. Carrascal, Corresponding Author I. Carrascal [email protected] Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainDepartamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorJ.A. Casado, J.A. Casado Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorJ.A. Polanco, J.A. Polanco Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorF. Gutiérrez-Solana, F. Gutiérrez-Solana Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this author I. Carrascal, Corresponding Author I. Carrascal [email protected] Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainDepartamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorJ.A. Casado, J.A. Casado Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorJ.A. Polanco, J.A. Polanco Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this authorF. Gutiérrez-Solana, F. Gutiérrez-Solana Departamento de Ciencia e Ingeniería de los Materiales, Universidad de Cantabria, Avda. Los Castros, s/n. 39005, Santander, SpainSearch for more papers by this author First published: 18 July 2005 https://doi.org/10.1002/pc.20134Citations: 44AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract A statistical study of railway fastening insulating plates from various points of the Spanish territory reveals that high responsibility structural components injected with a hygroscopic material such as polyamide (PA) reinforced with short fiberglass can absorb varying amounts of water, depending on the working environment. This hygroscopic nature of PA6 means that the mechanical behavior of the matrix, and thus of the component as a whole, is heavily dependent on the content of water retained. This article studies the absorption and diffusion of water in the core of PA6. To verify the effects of humidity on the mechanical properties of reinforced PA6, the material was conditioned, that is, it was assigned a precise humidity content. The results obtained show that the interphase between the fiber and the matrix is a preferential way for the water advance in the composite. The diffusion of water in the PA core was carried out according to Fick's Second Law and the diffusion coefficient responds to an Arrhenius exponential law. The material behavior was experimentally validated and so it can be applied to quantify the humidity content of a component in a specific environment of temperature and exposure. POLYM. COMPOS., 26:580–586, 2005. © 2005 Society of Plastics Engineers REFERENCES 1 I. Carrascal, J.A. Casado, J.A. Polanco, F. Gutiérrez-Solana, and L. Sánchez, Anales de Mecánica de la Fractura, XV, 319 (1998). 2 Ph. Castaing and L. Lemoine, Polym. Compos., 16(5), 349 (2004). 3 A.A. Fahmy and J.C. Hurt, Polym. Compos., 1(2), 77 (2004). 4 P.E. Bretz, R.W. Hertzberg, J.A. Manson, and A. Ramirez, Water Polym., 531 (1980). 5 D. Valentin, F. Paray, and B. Guetta, J. Mater. Sci., 22, 46 (1987). 6 M. Akay, Polym. Compos., 2(6), 349 (1994). 7 I. Carrascal, J.A. Casado, J.A. Polanco, and F. 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