By Raf4C - 4/10/2019 6:01:58 PM
Hi guys,
I am trying to prepare composite laminates with resin infusion process. I am using the resin IN2 coupled with slow hardener. Unfortunately, I got many bubblea in two laminates and I do not understand why. I degas the resin+hardener compound before infusion. Here a quick description of the procedure I follow (that is the same of the video you posted on YouTube.
1) the resin flows through the fibers
2) I lock the inlet pipe (resin side)
3) I close the pipe outlet (catch pot side) after few minutes.
I am almost sure that I have no air losses in my bag because I did different verifications. The bubbles appears between point 2 and 3. Do I wait too much between point 2 and 3? Could be the air trapped in the pipe between the clamp and the resin at the beginning of the process?
I am attaching some figure of the laminates at the end of the process. Thank you in advance and congratulations for this important forum.
Raffaele  
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By MMCtuner - 6/21/2019 4:01:08 PM
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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