SEM ACCESSORIES n Certified Conductive Adhesives


EMS introduces a new reliable line of conductive adhesives which are certified by the Bureau Veritas Quality International. Quality Standards: ISO 9001; EN29001; ANSI/ASQC Q91


Silver Conductive Coating 18DB70X is a direct substitute for Silver Conductive Fluid 416, which is no longer available. This material was specially formulated for use in geographic areas that demand the use of low VOC (Volatile Organic Compounds) products. It provides low ohms at very thin dry film thickness on almost any surface, and exhibits excellent long term shielding and grounding properties.


n Silver Conductive 18DB70X


Typical Properties (as supplied, liquid): Pigment


Silver Binder


Solids content by weight Density


Acrylic 50.8% ± 5% 13.9 lb/gal (1.67kg/l)


Typical Properties (as applied): VOC


Diluent Drying


5 minutes air dry to touch/10 minutes to handle then 5 minutes at 180°–225°F (82° – 107°C) or air cure for 24 hrs. When dried: Service temperature


300°F (150°C)


Sheet resistance Attenuation


RT


0.015 ohms/sq. in./mil (25µm) 75 dB


12684-15 Silver Conductive Coating TECHNICAL TIP


Mounting Powders, Granules, And Fibers The thermoplastic adhesive, Tempfix (EMS Cat.# 12668), is


an excellent smooth embedding medium for stabilizing powders, granules and fibers. Tempfix becomes sticky at 40°C and melts at 120°C. To use: spread a thin layer over a sample support disc and allow to cool. The sample is then sprinkled on the hard surface and the temperature is raised to 40°C for 30- 60 seconds and allowed to cool again to room temperature. Excess particles are then removed by gentle brushing or compressed air. At room temperature Tempfix has a smooth featureless surface that allows specimens to be imaged and clearly distinguished from the support media. Silvio Marchese- Ragona, Renee Jobe, Aleda Jacobs. “AFM Preparation Techniques for Bulk and Powder Samples”. EMSA Bulletin 22:3 Nov., 1992.


15 g RT 0.5 lb/gal (59.6g/l) Acetone (1:1 ratio by volume)


n Silver Conductive Adhesive 503 A High Temperature Conductive Paint


Silver paint 503 is a flexible, high temperature conductive material designed for a wide variety of uses, and adheres to most substrates.


Advantages:


z Withstands ambient temperatures of over 500°F (260°C) z Remains flexible over temperature range of –40°F to 500°F z Highly conductive – good adhesion to substrates z Dries at room temperature z Ready to use – easy to apply


Typical Properties (as supplied): Pigment Binder Carrier Color


Density


Solid content by volume Weight solids Viscosity


Typical Properties (as cured): Color


Service temperature Sheet resistance


Drying


Air dry coated part approximately 10 minutes (depending on humidity) before carrying out resistance checks. Air dry to touch in 30 seconds and it is ready for use in 2 minutes.


12686-15 Silver Conductive Adhesive 503 15g


n Silver Conductive Adhesive Paste 478SS Our adhesive 478SS is a conductive, silver-based polymer which is used


for thick film coatings where liquid silver is not an option. Once cured, it offers a very high Tg (glass transition temperature) 153°F (67°C) to prevent blocking, and offers superior adhesion to polyester film. Adhesive 478SS can be cured at 200°F (93°C) within 15 minutes. Higher temperatures will reduce the time needed to achieve a final cure.


Typical Properties (as supplied): Pigment Binder Color


Dilutent


Consistency Solid content Flash point Shelf life


Typical Properties (as cured): Color


RT RT


Sheet Resistance 12685-15


12685-25 Silver


Polyester Silver


Carbitol Acetate


Paste (13,000-28,000 cps) 72.5-75.5%


230°F (110°C) 6 months under original seal Silver <0.025 ohm/square inch @1 mil


Silver Conductive Adhesive 478SS Silver Adhesive 478SS Thinner


15g 25ml


Electron Microscopy Sciences In PA: (215) 412-8400 • Toll-Free (800) 523-5874 Fax (215) 412-8450 or 8452 • email: sgkcck@aol.com or stacie@ems-secure.com • www.emsdiasum.com


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Specially Treated Silver 56% Fluoroelastomer


Methyl Isobuthyl Ketone (MIBK) Silver – Consistency: fluid 14.6 lbs/gal (1.75kg/L) 18% 62%


1700cps Shelf life for this product is two years under original seal. Store in cool place Silver 525°F (275°C) 0.05 ohms/sq. in/1mil dry film


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