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Pierce Pillon

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Laboratory Mgr.
Techspray

Pierce Pillon is the Laboratory Manager and lead formulations chemist at Techspray, a division of Illinois Tool Works (ITW) and a leading manufacturer of chemical products for the electronics industry.

Pierce Pillon has submitted responses to the following questions.
Adding Chlorine to a DI (Deionization) Water System
Depending on the specific use for the DI water, it may not be necessary. I assume it's for process use, ...
Conformal Coating in Nitrogen Environment
Besides purity & preventing solvent loss, the main reasons for choosing nitrogen as a blanket is its inertness and to ...
Contamination Using Solvent Dispensers
Unlessyou have a check valve behind the dispenser brush, chances are high forpotentially drawing a contaminant back into the container. ...
Trichloroethylene Alternative
Whilethere are many good products on the market aimed at replacing TCE (as well asPerchlorethylene and methyl chloride), a little ...
Conformal Coating Recommendation
Astock answer for these type of service environments would be a silicone coating,of which there are many to choose from. ...
Cleaning Military Circuit Boards Contaminated with Sand
Ithink to remove the sand/grime/loose debris, I would use a very low pressuresource (dry) such as nitrogen or even a ...
Dam & Fill vs. Conformal Coating
Dam& fill application is used for a variety of reasons. Someare purely aesthetic in nature, ie to give the area ...
Stencil Cleaning Procedure
I would recommend reviewing the IPC-7526 document, Stencil andMisprinted Board Cleaning Handbook. It's a very good overview of stencilcleaning methods, ...
Un-cleaned PCB Assemblies Potted
All of the water-soluble fluxes I am familiar with are highlyactivated. These residues must be removed, and as soon aspossible, ...
Conformal Coating Over Heat Sinks
Applying conformal coating in general to a heatsink or an associated accumulator sink will affect its ability to dissipate theheat. ...
Deionized Water Sample Testing
About the disparity of the test results - Remember the meteris sampling from a closed system. You're securing a second ...
White Discoloration After Ultrasonic Cleaning
Without actually seeing the discoloration, it' difficult totell if it's an oxidation problem possibly caused by a component of thecleaning ...
Dewetting of Acrylic Conformal Coating
There are a few factors that need to be addressed to narrow the problem down.Is there any cleaning of the ...
What is Causing Oxidation?
You didn't state what type of service the assemblies are in. I assume that they are not hermitically sealed. In ...
Stagnant DI Water Usage
You didn't mention whether your cleaning system is open or closed loop which will make a difference on system charge ...
Uneven Conformal Coating
I believe there is a potential residue problem on the substrate. The source can be a contaminant that was not ...