First infiusion -fail?

Talk Composites - The Forum for Advanced Composites

Back

First infiusion -fail?

Author	Message
Classicarbon	C Classicarbon posted 5 Years Ago HOT Topic Details
C Group: Forum Members Posts: 86, Visits: 639	Ok,I done.first infiusion and I think it's a fail. Resin in cup (left overs )solid,but resin in tubes still soft. I think I made.mistake and I shouldn't take the bag off. I not touch the sheet so might cure till tomorrow. Any ideas? Or I should wait another 24hrs next time?
	Reply Like 2
Rich (Staff)	Rich (Staff) posted 5 Years Ago Post Details
Group: Administrators Posts: 167, Visits: 4.6K	What resin/hardener did you use? It could well have cured faster in the catch pot or mixing cup because it is in a thicker section so may just need to be left for a longer period of time.
	Reply Like 1
Classicarbon	C Classicarbon posted 5 Years Ago HOT Post Details
C Group: Forum Members Posts: 86, Visits: 639	+x Rich (Staff) - 9/23/2019 1:51:36 PM What resin/hardener did you use? It could well have cured faster in the catch pot or mixing cup because it is in a thicker section so may just need to be left for a longer period of time. IN2 epoxy infiusion resin + AT30 slow hardner .Will that still can be saved?
	Reply Like 2
Rich (Staff)	Rich (Staff) posted 5 Years Ago HOT Post Details
Group: Administrators Posts: 167, Visits: 4.6K	Minimum of 24 hour curing time on the part. When did you run the infusion and what is your working temperature?
	Reply Like 2
Classicarbon	C Classicarbon posted 5 Years Ago HOT Post Details
C Group: Forum Members Posts: 86, Visits: 639	+x Rich (Staff) - 9/23/2019 1:55:53 PM Minimum of 24 hour curing time on the part. When did you run the infusion and what is your working temperature? 24 hrs ago, but cos I do stuff in a garage you think temp. In night might slow things down?
	Reply Like 2
Classicarbon	C Classicarbon posted 5 Years Ago HOT Post Details
C Group: Forum Members Posts: 86, Visits: 639	+x Classicarbon - 9/23/2019 2:03:00 PM +x Rich (Staff) - 9/23/2019 1:55:53 PM Minimum of 24 hour curing time on the part. When did you run the infusion and what is your working temperature? 24 hrs ago, but cos I do stuff in a garage you think temp. In night might slow things down? I think after I removed bag nothing was moved so fingers crossed it will cure. So for next time, resin in tubes should be solid to have some indication when the curing process have finished?
	Reply Like 2
Rich (Staff)	Rich (Staff) posted 5 Years Ago HOT Post Details
Group: Administrators Posts: 167, Visits: 4.6K	Almost certainly; you could put it somewhere warmer or just wait a little longer. As a very rough rule of thumb, a 10'C increase in temperature halves the associated curing times and so a 10'C drop in temperature will double the curing times. Ideally you would maintain at least 20'C for the full curing cycle of the resin but in an unheated workshop/garage at this time of year, it could easily drop well below that. I'd leave it for another 12-24hours before demoulding but see no reason as to why it should have failed, it just needs more time.
	Reply Like 3
Classicarbon	C Classicarbon posted 5 Years Ago HOT Post Details
C Group: Forum Members Posts: 86, Visits: 639	+x Rich (Staff) - 9/23/2019 2:18:35 PM Almost certainly; you could put it somewhere warmer or just wait a little longer. As a very rough rule of thumb, a 10'C increase in temperature halves the associated curing times and so a 10'C drop in temperature will double the curing times. Ideally you would maintain at least 20'C for the full curing cycle of the resin but in an unheated workshop/garage at this time of year, it could easily drop well below that. I'd leave it for another 12-24hours before demoulding but see no reason as to why it should have failed, it just needs more time. It come out quite well.Think to fast infiusion create small air pockets.But the temp. Was the main.issue.I know now if resin is cured in tube it should be fine.👍
	Reply Like 2