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Conformal coating for 90% humidity

Electronics Forum | Thu Sep 08 17:31:09 EDT 2005 | davef

Urethane CC have greater resistance to solvents than acrylic CC

conformal coating over inspection stamps

Electronics Forum | Thu Jun 27 08:47:21 EDT 2019 | SMTA-John

Having success with Circuit Boards #432 Solvent Resistant Ink - Designed specifically for circuit boards. This medium dry ink is highly resistant to solvents .... It is also non-conducting. Note: this ink contains an aggressive solvent so should not

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Fri Dec 18 09:27:51 EST 2009 | sforman1

Tom: Once again - why are you using solvent based conformal coating. 1B31 is OK as a CC but it contains Toluene and MEK!! It is only 35% solids which means you are trying to get rid of 65% solvent. If you must use it due to customers requirement then

Bubbles on solder joint(after conformal coating curing)

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

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Mon Dec 28 09:12:56 EST 2009 | kpm135

@tommyg_fla According to the TDS the recommended coating thickness for Humiseal 1B31 is only 1-3 mils so if I had to guess I would say your issue might be that you're re-coating over the first pass too soon. All the solvent hasn't evaporated and the

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Mon Nov 30 23:11:50 EST 2009 | prodivegsr

Hi sforman1 Are you refering that the UV is able to cure on solvent based material too ?

Re: Adhesion of conformal coating to plastic components

Electronics Forum | Wed Jun 03 01:06:13 EDT 1998 | Mike Moninger

| We have experienced poor adhesion of acrylic conformal coating to plastic bodied IC�s. The observed symptoms of this are a blistering or lifting of the coating at the surface of the component, although peel testing has revealed that this is not al

Re: Adhesion of conformal coating to plastic components

Electronics Forum | Wed Jun 03 07:13:27 EDT 1998 | Tom Tellinghuisen

| We have experienced poor adhesion of acrylic conformal coating to plastic bodied IC�s. The observed symptoms of this are a blistering or lifting of the coating at the surface of the component, although peel testing has revealed that this is not al

Re: Adhesion of conformal coating to plastic components

Electronics Forum | Wed Jun 03 15:22:12 EDT 1998 | Greg Curler

| | We have experienced poor adhesion of acrylic conformal coating to plastic bodied IC�s. The observed symptoms of this are a blistering or lifting of the coating at the surface of the component, although peel testing has revealed that this is not


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