Air bubbles in the composite laminates

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Air bubbles in the composite laminates

Author	Message
Warren (Staff)	Warren (Staff) posted 6 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 8.5K	Looks leak free. What temperature are you working and curing at? How was the sheet like when demoulded? Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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Raf4C	R Raf4C posted 6 Years Ago HOT Post Details
R Group: Forum Members Posts: 12, Visits: 86	+x Warren (Staff) - 4/16/2019 9:15:34 AM Looks leak free. What temperature are you working and curing at? How was the sheet like when demoulded? Dear Warren, Thank you for your reply. I am working at room temperature (20-25 °C). I am curing at room temperature (even if the idea is to do a post cure in the oven according to the datasheet when I'll fix these issues). I am interested in mechanical properties and for this reason I am using a peel ply on both the surfaces in order to have the same surfaces. For this reason, I cannot see if I have some bubbles in the plate. However, the surface does not look uniform. As you were able to see from the previous figure, after the infusion I have no air bubbles, they came out later. I noted also some air bubbles in the inlet and outlet tubes (only on the composite plate side), I attach some pictures. I am producing a plate (30x30 cm) with glass fibres, and the pump that I am using is the DVP EC.20 (the industrial one sold by EasyComposite). Can this pump be too strong for my purpose?
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MMCtuner	MMCtuner posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 1, Visits: 168	Hi, after many years as a member, I think this is my first post, so I hope to be useful. Anyways, as suggested before, you should leave a mesh free section before the vacuum line, that would help pass air through the laminate faster than the resin and degass your laminate before the catchpot starts to fill. Easier/costier option, use MTI hose.
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