Hi team! I second Bev's recommendation. We have used FTIR successfully for audit questions. You can take a clean metal coupon, place it in a cure oven, run a cure cycle and then conduct an FTIR assessment to demonstrate that no silicone cross contamination is occurring in the process (i.e. the coupon shows no indications of silicone material). Dave Hillman Collins Aerospace [log in to unmask] On Tue, Jan 7, 2020 at 8:49 AM Bev Christian <[log in to unmask]> wrote: > Arnaud, > Not cheap, but FTIR is an excellent method for detecting silicones. > Regards, > Bev > > -----Original Message----- > From: TechNet <[log in to unmask]> On Behalf Of GRIVON Arnaud > Sent: Tuesday, January 7, 2020 9:00 AM > To: [log in to unmask] > Subject: [TN] [COM] Evaluating/Monitoring Silicone Contamination > > Happy New Year TechNet ! > > Here is a first query for 2020... > > We all know about the need of carefully segregate acrylic/urethane from > silicone conformal coatings, but how about evidencing and demonstrating > (say > for an angry auditor) the actual lack of silicone cross-contamination on > toolings, ovens and workspaces ? > > Are you aware of any reliable test system to perform silicone contamination > evaluations? What are their principles and related test methods & > acceptance > criteria? > > It looks like some suppliers offer Surface Silicone Contamination Test Kits > : > > - Henniker > Plasma< > https://urldefense.proofpoint.com/v2/url?u=https-3A__plasmatreatment.co.uk_wp-2Dcontent_uploads_2016_09_Henniker-2DPla&d=DwICAg&c=ilBQI1lupc9Y65XwNblLtw&r=qMshjwqeixvQjs1qYTl8aRebuaqi25nLzYlpmDF6tjI&m=0FRlP4dx1xpQpOzzzwM6Lve6zyjkRpbCgOTxviaD3Zk&s=Ep6e_JqIAB-C3jV3KJPdKGDQ5I2Fc3a2zsBHanP85-0&e= > sma-Technology-Overview.pdf> : > > https://urldefense.proofpoint.com/v2/url?u=https-3A__plasmatreatment.co.uk_henniker-2Dplasma-2Dtechnology_products_surface-2Dte&d=DwICAg&c=ilBQI1lupc9Y65XwNblLtw&r=qMshjwqeixvQjs1qYTl8aRebuaqi25nLzYlpmDF6tjI&m=0FRlP4dx1xpQpOzzzwM6Lve6zyjkRpbCgOTxviaD3Zk&s=AB3yDQaPURrIweRZnP5pGgyVgrEDmkiS5qokssTFuP8&e= > st-equipment/test-for-surface-silicone-contamination/ > > - Anderson Materials Evaluation : > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.andersonmaterials.com_test-5Fmethods_testing-2Dfacilities-2Dfor-2Dsilicon&d=DwICAg&c=ilBQI1lupc9Y65XwNblLtw&r=qMshjwqeixvQjs1qYTl8aRebuaqi25nLzYlpmDF6tjI&m=0FRlP4dx1xpQpOzzzwM6Lve6zyjkRpbCgOTxviaD3Zk&s=Zh_qyJmTEBherFBgLxWkxu6kfo-7GjsmgI8UlB50j9c&e= > e-contamination.html#< > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.andersonmaterials.com_test-5Fmethods_testing-2D&d=DwICAg&c=ilBQI1lupc9Y65XwNblLtw&r=qMshjwqeixvQjs1qYTl8aRebuaqi25nLzYlpmDF6tjI&m=0FRlP4dx1xpQpOzzzwM6Lve6zyjkRpbCgOTxviaD3Zk&s=Gt3ENH0EurLNosj337i8Yspnn4ckCubhDKFmlKaimZM&e= > facilities-for-silicone-contamination.html> > > Any practice of such test kits and return of experience to share? > > Thanks in advance for your feedbacks. > > Best regards, > > Arnaud Grivon >
