CHO-FLEX 601 Coatings and Inks
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TECHNICAL BULLETIN Conductive elastomers Knitted wire mesh Conductive coatings, sealants, adhesives Cable shielding products EMI/ESD shielding lamintes Shielded vents and Windows FCC/VDE and TEMPEST testing 64 ESIGN, AND TEST TECHNOLOGY Seals CHO-FLEX 601 CONDUCTIVE COATING DESCRIPTION CHO-FLEX♙ 601 one-component conductive coating is designed specifically for EMI shielding of copper/Kapton* flexible circuit lamintes and for printing circuits on Kapton film. Upon cure, this coating exhibits excellent adhesive properties, a high degree of flexibility, thermal stability, high conductivity and superior peel strength. CHO-FLEX 601 coating can be applied by spraying or silk-screening methods, and can withstand wave solder tempratures above 500°F without losing any of its exceptional properties. FEATURES ⩕ One part silver-filled polyurethane coating. Spray or screen application. Օ High degree of flexibility. Withstands wave solder tempթratures in excess of 500°F (262°C). Exceptional pot life at room tempթrature. Cures only when heated, i.e.>250°F (122°C). Cured resistivity of 100 milliohms or better after wave solder process. APPLICATION CHO-FLEX 601 coating may be silk-screened as is. If thinning is desired, the coating may be thinned with DBE (Dibasic Ester). For spray application, thin CHO-FLEX coating with a sovent blend of MEK/Butanol/lsopropal alcohol at a ratio of 15/10/6 by volume. Thin two parts of coating with one part of thinner and mix completely (preferably in paint shaker). TYPICAL PROPERTIES" CHO-FLEX 601 Vehicle Polyurethane Solids by weight, % 58 Spթcifie Gravity (measured) 1.67 Surface Resistivity, .001" film, ohm/square 0.05 Volume Resistivity, .001" film, ohm-cm 0.00015 Adhsion per ASTM D3359-78 5B Shelf Life @77°F (25°C), months 6 Suggested cure cycle: Initial Cure Press Cycle Wave Solder 325°F (162°C)/4-5 minutes (dry to touch) 360°F (184°C)/90 minutes @400PSI (28.2kg/cm?) 500°F (262°C)/3-4 seconds "Kapton is a registered tradename of E.l. du Pont de Nemours. "Data based on siIk screen application with 23b mesh open screen. Coating applied to pumiced Kapton. Application at 0 8 to 1.2 mils. Chomerics, Inc. I 77 Dragon Court I M*J Woburn, MA 01888-4014 Q()f\0 Tel: 617-935-4850 ^""ed FAX: 617-933-4318 Parker Hannifin PLC Chomerics Europe Parkway, Globe Park Estatc Marlow, Bucks., SL7 1YB, England Ici: (44) 1628 486030 FAX: (44) 1628 890053 France Freephone Tel: (0590) 8170 Germany Freephone Tel: (0130) 818074 9002 CERTIFIED Seals NOTICE: The information contained herein is to the best of our knowledge true and accurate. However, since the varied conditions of potential use are beyond our control, ail recommandations or suggestions are presented without guarantee ot responsibility on our part and users should make their own tests to dtermine the suitability of our products in any sp驩cifie situation. This product is sold without warranty either expressed or implied, ot fitness for a particular purpose or otherwise, except that this product shall be ot standard quality, and except to the extent otherwise stated on Chomerics' invoice, quotation, or order acknowledoement. We disclaim any and ail liability incurred in connection with the use of information contained herein, or otherwise. AH risks of such are assumed by the user. Furthermore, nothing contained herein shall be construed as a recommendation to use any process or to manufacture or to use any product in conflict with existing or future patents covering any product or material or its use. ©Chomerics, Inc. 1995 /^s 1M1095SG-246 Printed in U.S.A. \KJ Rev. 1-1294