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¢ñ¡¢Low-temperature Cured Silver Paste |
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¢ò¡¢Medium,High-temperature Sintered Silver Paste |
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¢ø¡¢Conductive Glue (Binder/Adhesive) |
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Low-temperature Cured Silver Paste
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SSP-1422 (General Applications)
Advanced Performing Polymer Thick film Material for Membrane Keyboards and Flexible Printed Circuits
General:
This screen printable, polymer thick film material is an industry standard for the production of high reliability membrane keyboards, membrane touch switches and other flexible circuits. The material's conductivity and cure performance allows wide processing latitude and provides high performance at reasonable costs. In addition to its high conductivity, the material is formulated to provide excellent flexibility,excellent oxidation-resistance and excellent adhesion to the wide variety of substrates, both treated and untreated, used in the manufacture of these electronic circuits. SSP1422 is offered in a range of viscosity variations to suit many screen printing processes and is fully blendable with products conductive carbon-based ink CCP0303, to achieve a range of resistance values.
Advantages:
¡ñLow Electrical Resistance
¡ñExcellent Flexibility
¡ñExcellent Adhesion
¡ñGood Printability
¡ñNo Thinning Required
¡ñGood Screen Residence Time
¡ñEasy to Use
¡ñLong Shelf Life With Refrigeration
Typical Properties:
Color : silver (of wet product)
Viscosity : 13,000 mPa¡¤s (RVT Brookfield #6 spindlee, 20 rpm, sample temp. controlled to 86oC/30oC)
Total solids : 60% (typical)
Density : 17.01 (2.13 kg/l)
Shelf life : 12 months under original seal
Flash point : 212 oC(100oC)
VOC 835 g/l (6.96 lb/gal)
Theoretical coverage: 480 ft2/gal/mil (5.52 m2/kg)
Typical Properties:
Properties obtained after screen printing and curing at 120 oC for 50 min.
(as cured)
Resistivity : < 15 milliohms per square ©ˆ1 mil
Adhesion (3M Scotch Tape #600,Pull vertically) No Material Removal
Flexibility(1mm line,2Kg load¡Á180¡ã¡Á1minute¡Á10times) ¡÷R <2¦¸
Hardness : 3H
Printability :
10 mil lines and 10 mil spaces
Notes:
1. Typical properties are not intended to be used as specification limits.
2. RVT Brookfield #6 spindle, 20 rpm, sample temp. Controlled to 30oC.
3. Properties obtained after screen printing and curing at 120oCfor 50 minutes.
4. Flexibility: Number of flexes until resistivity changes to greater than 50% of initial value.
Application Details:
Before Use
Product is ready for use, but should be mixed thoroughly using a plastic spatula. Mix smoothly from the bottom of the container, being careful not to whip air into the product. Using a plastic spatula will decrease the possibility of introducing plastic grindings from the container sidewalls into the product - possibly clogging screens. Insure ink is at room temperature.
Screen Type
Optimal performance of this product is achieved when printed at a cured thickness of 0.3-0.6 mils. Many printer and print set-up conditions will determine the print thickness. Using a polyester screen with 160-200 mesh opening or a stainless steel screen with 170-325 mesh opening will achieve the best results. 0.5-1.5 mils of a solvent-resistant emulsion are recommended.
Cure Schedule
For optimum performance cure this material a minimum of 50 minutes at 120 oC. Various time/temperature ranges can be used to fit most production environments. This product can be cured under infrared conditions. Low conductivity and poor adhesion performance are symptomatic of under-curing.
Clean up
MEK (methyl ethyl ketone),MIBK acetone, or other suitable solvents. Clean the mesh of the screen until free of all visible particles in the screen. Allow screen to completely dry before using again.
Health and Safety:
Use with adequate ventilation. Avoid skin contact. If ingested, consult a physician immediately. Consult this product's Material Safety Data Sheet for further information on safety and handling |
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