Electronics Forum | Tue Mar 14 21:30:45 EDT 2023 | joeljacobo
Thank you very much for your contribution Stephen
Electronics Forum | Wed Mar 15 15:24:52 EDT 2023 | joeljacobo
In this case nitrogen is not used but thanks for your contribution!
Electronics Forum | Tue Jan 24 21:07:17 EST 2006 | davef
We all genuflect to Graham Naisbitt, a generous contributor to SMTnet. Moisture-curing urethanes may form minute bubbles if the coating is too thick or the coating environment is too humid. So, tell us more about your urethane and the method you u
Electronics Forum | Thu Aug 27 11:35:07 EDT 2009 | davef
There are many possibilities: * Conformal coat is incompatible with surface residue on the board * Conformal coat is incompatible with solder mask on the board * Moisture is out-gassing from the board * Conformal coat is too thick and does not allow
Electronics Forum | Thu Sep 10 15:01:28 EDT 2009 | mefloump
I currently spray DOW 2620 with my PVA650 without any problems. I do not thin it but I do have a distance between the coating machine and IR oven to provide a flash off period. I notice bubbles only when the flash off time is too short and the coatin
Electronics Forum | Sun Nov 29 20:04:05 EST 2009 | prodivegsr
Hi sforman1, The chemical that i'm using is a solvent based coating humiseal 1B73. From my understanding,the UV curing is mainly for UV curable coating like the UV40. And the main advantage of using UV curing is for fast throughput and environment
Electronics Forum | Fri Feb 18 12:00:08 EST 2011 | dennisfo
That has also been the standard here. We have a urethane line which pulls a vacuum on the mixture before transfering to the can. I plan on testing this out before receipt of the 73 thinner. I've also received some feedback with indication that the mi
Electronics Forum | Thu Jul 07 10:07:40 EDT 2011 | duso02
Interesting stuff. I must admit that I am unfamiliar with that product but we use quite a bit of Dow and they are overall excellent silicone coatings. We do nothing but conformal coating here and bubbles are usually from curing to quickly. Without kn
Electronics Forum | Fri Jul 08 04:09:59 EDT 2011 | leadthree
I hope to get some feedback here. I have a SMD connector that reflow-solders quite poorly (I guess solder paste or profile issue). On the X-ray I see strange bubbles, does it mean there are voids under pin? Generally I am not satisfied with the sol
Electronics Forum | Wed Dec 10 11:42:49 EST 2014 | arifa_anees
www.apexpackagingcorp.com/manufactures.html www.abcokovex.com/bubble-wrap.html www.murray-packaging.co.uk/mobile/packaging.htmlCached www.murray-packaging.co.uk/mobile/packaging.htmlCached please check the above mentioned links for your query. re
