Study Diffusion of Water to Carbon Fiber /Epoxy Composite

Abstract

In present work moisture diffusion properties of the woven fabric carbon/epoxy laminates were determined using weight gain, experiments over a temperature range of 30 0 C to 60 0 C. The laminate-shaped fiber reinforced composites were manufactured by using epoxy resin (Epon 828) cured with TETA (tri ethylene tetra amine) reinforced with carbon fiber. The prepared Composite samples were immersed in water for several weeks and moisture content was measured. The diffusivity of the composite was found to obey the Arrhenius relation over the entire range of temperature. Analytical solution to Fick's law is done by build up computer program in Matlab. Good agreement between experiment data and analytical solution of Fick's Law. ‫ﺍﻨﺘﺸﺎﺭﻴﻪ‬ ‫ﺩﺭﺍﺴﺔ‬ ‫ﻭﺍﻻﻴﺒﻭﻜﺴﻲ‬ ‫ﺍﻟﻜﺎﺭﺒﻭﻥ‬ ‫ﺍﻟﻴﺎﻑ‬ ‫ﻤﻥ‬ ‫ﻤﺘﺭﺍﻜﺒﺔ‬ ‫ﻟﻤﻭﺍﺩ‬ ‫ﺍﻟﻤﺎﺀ‬ ‫اﻟﺨﻼﺻﺔ‬ ‫ﺔ‬ ‫ﻣﺘﺮاﻛﺒ‬ ‫ﻮاد‬ ‫ﻣ‬ ‫ﻲ‬ ‫ﻓ‬ ‫ﺎء‬ ‫اﻟﻤ‬ ‫ﺸﺎر‬ ‫اﻧﺘ‬ ‫ﺔ‬ ‫ﻋﻤﻠﯿ‬ ‫ﺔ‬ ‫دراﺳ‬ ‫ﻢ‬ ‫ﺗ‬ ‫ﺎﻟﻲ‬ ‫اﻟﺤ‬ ‫ﺚ‬ ‫اﻟﺒﺤ‬ ‫ﻲ‬ ‫ﻓ‬. ‫ﻨﺞ‬ ‫راﺗ‬ ‫ﻦ‬ ‫ﻣ‬ ‫ﺼﻨﯿﻌﮭﺎ‬ ‫ﺗ‬ ‫ﻢ‬ ‫ﺗ‬ ‫اﻻﯾﺒﻮﻛﺴﻲ‬) ‫أﯾﺒﻮن‬ 828 (‫ﺑﺎﻟﻤﺼﻠﺪ‬ ‫اﻟﻤﻘﺴﻰ‬) TETA (‫اﻟﻜﺎرﺑﻮﻧﯿﺔ‬ ‫ﺑﺎﻻﻟﯿﺎف‬ ‫اﻟﻤﺴﻠﺢ‬ ‫و‬. ‫ه‬ ‫ﺪ‬ ‫ﻟﻌ‬ ‫ﺎء‬ ‫اﻟﻤ‬ ‫ﻲ‬ ‫ﻓ‬ ‫ﺎذج‬ ‫اﻟﻨﻤ‬ ‫ﺮ‬ ‫ﻏﻤ‬ ‫ﺗﻢ‬ ‫ﻣﻦ‬ ‫ﺗﺘﺮوح‬ ‫ﺣﺮاره‬ ‫وﺑﺪرﺟﺎت‬ ‫اﺳﺎﺑﯿﻊ‬ 30-60 ‫ﺳﯿﻠ‬ ‫درﺟﮫ‬ ‫ﯿ‬ ‫ﺰﯾﺔ‬. ‫ﺎذج‬ ‫اﻟﻨﻤ‬ ‫ﻓﻲ‬ ‫اﻻﻧﺘﺸﺎر‬ ‫ﻋﻤﻠﯿﮫ‬ ‫أﻇﮭﺮﺗﮫ‬ ‫اﻟﺬي‬ ‫اﻟﺴﻠﻮك‬ ‫ﻓﺴﺮ‬ ‫ﻚ‬ ‫ﻓ‬ ‫ﻗﺎﻧﻮن‬ ‫ﺣﺴﺐ‬) Ficks-law. (‫ﮫ‬ ‫ﻣﻌﺎدﻟ‬ ‫ﺣﻞ‬ ‫ﺗﻢ‬) Ficks-law (‫ﯿﻦ‬ ‫ﺑ‬ ‫ﺎﺑﻖ‬ ‫ﺗﻄ‬ ‫ﻚ‬ ‫ھﻨﺎﻟ‬ ‫ﺪ‬ ‫وﺟ‬ ‫ﺒﮫ‬ ‫ﺣﺎﺳ‬ ‫ﺎﻣﺞ‬ ‫ﺑﺮﻧ‬ ‫ﺑﺎﺳﺘﺨﺪام‬ ‫واﻟﺘﺤﻠﯿﻠﯿﮫ‬ ‫اﻟﻨﻈﺮﯾﮫ‬ ‫اﻟﺪراﺳﮫ‬. Nomenclature The concentration (mole/liter) Specific heat (J/g o C) Diffusion coefficient (cm 2 /sec) c C p D E d Activation energy, kj/mole h Thickness of lam inate, mm K Thermal conductivity (kcal/h o C) M Mass percentage of water absorbed (%) R Gas constant, j/mol K t Time (s) T Temperature, o C PDF created with pdfFactory Pro trial version www.pdffactory.com