Electronics Forum: 1b31 (Page 1 of 5)

Conf.Coating - Humiseal 1B31LOC vs. 1B31

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

Conf.Coating - Humiseal 1B31LOC vs. 1B31

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

PVA Conformal Coating Machine

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

Techspray 2108-12S

Electronics Forum | Sat Feb 24 09:49:26 EST 2018 | davef

+$3 / ounce * Humiseal 1B31 => ~$2.50 / ounce ... assuming same coverage thickness and that

1B31 Acrylic conformal coating problems

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

1B31 Acrylic conformal coating problems

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 >

1B31 Acrylic conformal coating problems

Electronics Forum | Sun Dec 26 23:48:01 EST 2010 | raghu

Dear Sir, We are using 1B31 conformal caoting of 48 sec viscosity in Zahn #1 cup, by machine(PVA354) application with Tank air pressure 2.3 psi, automising air pressure 1 psi. 7 days after application we are observing peeling off problem.. And n

Conformal Coating Issues

Electronics Forum | Fri Jun 08 09:47:19 EDT 2012 | duso02

Umar, it may never be solved. Some coatings just do not stick to some substrates. Have you tried using a different coating? Even changing to 1B31S may be enough. Or 1B73 acrylic. Also, look into Nexus3C.com.

Acrylic conformal coat cure test method

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.

Acrylic conformal coat cure test method

Electronics Forum | Wed Feb 28 20:16:26 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.

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