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XC110 and EB700, first use, not so great results, not sure what went...
XC110 and EB700, first use, not so great results, not sure what went wrong.
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XC110 and EB700, first use, not so great results, not sure what went wrong.
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carguy84
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carguy84
posted 4 Years Ago
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Not sure what went wrong with this. It’s two ply of the XC110 on an EB700 board that’s been CNCd, sanded and sealed with 120. EB700 machines excellent, BTW.
I used FibRelease on the surface of the mold and cured it in the curing oven with the ramp to 70c, hold for 4 hours, ramp to 120 and held that for about 80 minutes and then let it cool in the oven back down to 25. I don’t have a ramp and soak controller yet, just a regular Auberins one, but did my best to manually follow the ramp up in the doc.
The part came right out of the mold but with the surface seen here. Seems like a lot of the resin ended up on the back side of the part. Too much vacuum isn't a thing right? You can run the vacuum the entire time? Does this look more like bad bagging technique? My stack is bagging, cloth on the bottom and under the hose adapter and then just the release over the carbon.
Thanks for any advice.
Chip-
https://imgur.com/a/0djWj9T
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4 Years Ago by
carguy84
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carguy84
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So I took more care in doing the vacuum bagging and making sure there wasn't any leaks in the bag or the tubing and it came out MUCH better, but still am getting pin holes:
https://imgur.com/a/wCN3t4G
But it's a 1000 times better than the first run.
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XC110 and EB700, first use, not so great results, not sure what went wrong.
carguy84
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4 Years Ago
I would say use a breather on the whole circumference and debulk after the first layer.
SleepingAwake
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4 Years Ago
I did a debulk after the first layer but I did not have the breather go all the way up the sides of the mold, I can try that today. After looking around the internet some more, I'm thinking I may hav...
carguy84
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4 Years Ago
Out of autoclave prepreg can be quite unforgiving in terms of process parameters...
SleepingAwake
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4 Years Ago
until my ramp and soak controller ships I'm a little behind the curve for temp processing, but Omega says it should ship this week. In the mean time I am going to check the bag and do a drop test...
carguy84
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4 Years Ago
So I took more care in doing the vacuum bagging and making sure there wasn't any leaks in the bag or the tubing and it came out MUCH better, but still am getting pin holes:...
carguy84
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4 Years Ago
Any bridging in the corners will draw resin away from the field and lead to pinholes. Not much resin to go around. Also, if you use peel ply, especially on thin laminates, you'll draw too much resin....
KLComposites
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4 Years Ago
That is a much better finish. As said, corner bridging can make a real difference. So pay special attention to the corners. Also you can try holding it at the soak temperature for a bit longer to see...
Warren (Staff)
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4 Years Ago
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