Bubbling at the end of the degas


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Raf4C
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Dear all, I need again your precious advices. I started a couple of years ago to make composite laminates by using vacuum infusion with easycomposite equipment and materials. I am satisfied of the laminates that I obtain. However, last week I experienced a new problem. I was degasing the resin+hardener before the infusion (I use the EC20 pump with the big vacuum chamber), the bubbling phase was almost finished, and then, suddenly, the bubbling started again for few seconds. Afterwards, it started again and then stopped after few seconds. This was repeated few times before I stopped the process. It was the first time that this happened. However, I decided to make the infusion with that resin and the results is that I had some voids in the plate that I produced (of course the bag was super OK). Anyone of you can help me regarding this problem? Any Idea?
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Hanaldo
Hanaldo
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It depends. For small parts (less than 0.5sqm) I probably would limit the infusion speed to about 1" per minute. For anything bigger, it tends to regulate itself better and you dont have as much lag between the top of the laminate and the tool surface.
GO

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