Electronics Forum | Wed May 09 03:13:06 EDT 2012 | umar
I had send my coating board to the test lab for adhesion coating test. 3 times send, the result 3times fail. The coating chemical use is Humiseal 1B31. The process is clean the boards at washing process use the Vigon A200 saponifier mix with DI wate
Electronics Forum | Thu Jul 29 00:50:37 EDT 2004 | C.W
Anyone has experience with Humiseal 1B31LOC and 1B31? Their material properties(physical, chemical, temp. etc) are fairly much the same after cure but there are some differences when they are at liquid stage. We are currently using 1B31 but is planni
Electronics Forum | Sat Jul 31 08:12:07 EDT 2004 | sforman1
Why even worry about VOC's when there are excellent UV cure materials to coat PCB's Sam Forman Microcoat Technologies
Electronics Forum | Sat Feb 24 09:49:26 EST 2018 | davef
+$3 / ounce * Humiseal 1B31 => ~$2.50 / ounce ... assuming same coverage thickness and that
Electronics Forum | Mon Dec 27 10:03:35 EST 2010 | duso02
Contact your distributor for the coating or Humiseal directly. Humiseal has had a recent issue with batches of 1B31. The specific problem is lack of adhesion, which is what you have as well. You need to find out if your batch # is one of the affected
Electronics Forum | Fri May 18 06:49:58 EDT 2012 | kahrpr
We us a lot of 1B31 it could be one of the most common coatings out there. We do not clean the boards and do not have an issue. I would check the solder mask compatibly. I would also see how the 3rd party company is testing the boards what criteria o
Electronics Forum | Mon Jan 03 00:30:30 EST 2011 | raghu
Contact your distributor for the coating or > Humiseal directly. Humiseal has had a recent > issue with batches of 1B31. The specific problem > is lack of adhesion, which is what you have as > well. You need to find out if your batch # is one >
Electronics Forum | Tue Dec 20 10:10:21 EST 2005 | SteveH
Ours is the same configuration as that, we run with neat Humiseal 1B31 through the needle valve and a 1:1 blend 1B31/Butanone (MEK) in the spray valves. Programming is done via a PC using the pendant and the path is point to point trained on scrap P
Electronics Forum | Thu Jan 22 09:04:22 EST 2009 | mefloump
Humiseal recommends a 1 to 1 mix ratio of 1B31 and Thinner 521. I have for that I need to thin my ratio more to get humiseal to spray correctly in our PVA650. Also I am using Humiseal 1B73 but the tech data sheets say the same for spraying. Try thinn
Electronics Forum | Wed Feb 28 20:10:08 EST 2001 | mhunter
Checked the archives with no luck. Anyone have a reliable test method of verifying acrylic conformal coat cure. Using Humiseal 1B31 mixed with approximately 30% solvent, spraying with a Nordson. Thanks in advance.
