Talk Composites - The Forum for Advanced Composites

Resin Infusion problems

http://www.talkcomposites.com/Topic12432.aspx

By tanny0410 - 7/30/2014 7:26:49 AM

Hi,

I have been having trouble infusing a 9 mm thick basalt/vinylester laminate and have a few questions.

1. Should the flow media cover cover the entire laminate or should it only cover a part of it? Should it be in contact with the outlet spiral as well?
2. The flow on the top is much faster than at the bottom due to the flow media. Is there anything I can do to speed up the flow at the bottom surface?

Some help would be greatly appreciated.

Regards,

Tanmay
By Warren (Staff) - 8/1/2014 11:06:29 AM

You are definitely towards the limit of infusion in terms of thickness.  You ideally would need something with a long pot life and infuse it really slowly, ie mm's per minute as you need the time to allow the resin to soak through to the bottom.

You might find that wet-lay vacuum bagging is more successful in the long run as you can wet it all out layer by layer then reduce the weight and improve resin/fibre ratio and compression with the vacuum bagging.