coating resin degassing - whats going wrong ?


Author
Message
benet
benet
Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)Supreme Being (547 reputation)
Group: Forum Members
Posts: 59, Visits: 373
Prior to applying a finishing layer of coating resin i thought it would be a good idea to degass it as ive been getting micro bubbles that collect polish.
However for me the degassing process seems to add more bubbles than it get rid of.

Curently Im poring this resin by hand, "tipping out" with a brush and then using a heat gun to pop bubbles. which is OK but id like to degass first.

here are some pics.
Mixed Coating Resin prior to de-gassing
http://www.talkcomposites.com/Uploads/Images/7b252634-0ad5-4da5-b346-5701.jpg


Resin during degassing - i left it like this for 2 or 3 minutes until the bubbles collapsed - then locked off the pump and vented the chamber

http://www.talkcomposites.com/Uploads/Images/9a8334d0-9548-4521-867f-8462.jpg

vacum reading
http://www.talkcomposites.com/Uploads/Images/785240ee-5afa-4098-9df3-3e05.jpg

resin after venting ....
http://www.talkcomposites.com/Uploads/Images/3476e251-3375-4d22-92bc-192c.jpg


after waiting 5 mins to see if the bubbles float out....

http://www.talkcomposites.com/Uploads/Images/c5946ef6-03e0-46ef-aae2-952c.jpg

i tried degassing it again and again but it didnt improve, so after an hour, by which time it had started to warm warm up. i  binned it and used the old method.

What is going wrong ?

Thanks

Ben
Reply
Shaneer22
Shaneer22
Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)Supreme Being (1.1K reputation)
Group: Forum Members
Posts: 156, Visits: 14K
Another way to help is use a resin or hardener with a longer open time,when I infuse I use a harderner with a 3hour pot life which give me after mixing,15 to 20 minutes degasing time which depending on temperature usually give Krystal clear resin 
GO

Merge Selected

Merge into selected topic...



Merge into merge target...



Merge into a specific topic ID...





Similar Topics

Reading This Topic

Explore
Messages
Mentions
Search