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#1
02-03-2005, 09:16 PM
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| What happens under vacuum? So what might happen differently to epoxy or even VER or PER under vacuum? Since vacuum changes things as compared to normal atmospheric pressure. Last edited by Grantman : 02-03-2005 at 09:18 PM. Reason: hit wrong button :-o  |
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#2
02-04-2005, 01:49 AM
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| The epoxy does not change as it mechanical properties are not influenced by pressure. The hardening process is a chemical process and the speed of this process is influenced by the amount of hardener and temperature. Viscosity is influenced by temperature and type of epoxy. What the vacuum does is pull the epoxy into the laminate quicker and remove the air. The vacuum process does influence,in a way, the mechanical properties of the whole laminate. With the vacuum it's possible to obtain a higher glass/resin ratio, what makes a stronger laminate. Also the removal of the air gives a better laminate.
__________________ Dutch Peter “The opinion of the majority is not necessarily correct” – Yi Qing Cui |
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