Electronics Forum: conformal coat

Autospraying Conap CE 1155

Electronics Forum | Wed May 19 20:00:21 EDT 2010 | jry74

I am planning on trying to autospray CE 1155 using an SCS precision coat. Does anyone out there currently do this? If so, can you share any information and parameters such as mixtures, methods, head configuration, conveyor baking. ANY information

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Mon Sep 26 16:48:32 EDT 2005 | PWH

Are you using masking? Conformal coat will de-wet (no pin holes usually, though) due to masking tape adjacent to affected areas if the tape glue chemistry isn't compatible with the conformal coat.

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Tue Sep 27 11:46:02 EDT 2005 | jimby

surface tension of solder mask material on the board. Need to rough it up prior to board assembly. Use Silica (cabosil) and IPA mixture and rub

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Tue Sep 27 12:04:35 EDT 2005 | Amol

Thank you patrick and jimb for you suggestions, will try them out and keep you posted. Amol

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Fri Sep 30 11:00:14 EDT 2005 | Amol

i tried scrubbing the boards with xylene when they are hot from the bake, the the pockmarking seems to have almost disappeared! Amol

Help with dewetting

Electronics Forum | Mon May 24 19:37:57 EDT 2010 | jry74

I am new Engineer in conformal coating and I am looking for help with dewetting. What "Tricks of the trade" can I try to reduce or eliminate dewetting? We use a lot of Conap CE 1155 and Humiseal 1B73? Any help would be appreciated!!!

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Tue Sep 27 09:18:17 EDT 2005 | patrickbruneel

Amol, Have you tried to conformal coat a bare board as it comes in from the board shop? If you still have the same results at least you know the problem is not related to your process. If you don't have the problem you need to have a closer look at

Conathane CE 1155-35 Conformal Coating Issues

Electronics Forum | Mon Sep 26 15:17:54 EDT 2005 | Amol

Hi, I am spray coating PCB's with the above mentioned coating. The problem is that as soon as the boards are coated, there are pin holes on the surface that subsequently turn into localized areas of dewet on te PCB (its almost as it the coating is fl

Help with dewetting

Electronics Forum | Tue May 25 12:43:00 EDT 2010 | jmedernach

I don't have experience with 1B73. I do have a ton of experience with CE-1155. There are a couple of gotchas with this material. First and foremost is that it HATES silicone residue. If the material is not sticking to parts and they aren't cerami

Help with dewetting

Electronics Forum | Tue May 25 13:03:35 EDT 2010 | jdumont

Hello, I have no experience with CE-1155 but a ton with 1B73. I would say Justin hit it right on the head. 1B73 does not like to be anywhere near silicone residues. We make sure the boards are handled with gloves after wash, before coat. Unfortunat

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