PCP-CH103-IC
Product Description
PCP-CH103-IC is a 2- part screen printable carbon paste for use in long life, high reliability and resistive contact sensor applications. The resistive paste is designed to withstand in excess of 2M cycles when combined with suitable wiper systems.
Product Benefits
-
Can be mixed with other products in the -CH series to produce accurately controlled resistance values
-
Good screen residence time
Paste Preparation
PCP-CH103-IC is a 2 part paste system. It requires mixing of the Part B, PCP-CH103-IC -B and the Part A, PCP-CH103-IC-A in the correct ratios to form the PCP-CH103-IC. The contents of one container of the Part B PCP-CH103-IC-B system must be added completely to a pot of PCP-CH103-IC-A. The combined pastes should then be mixed slowly. Avoid rapid stirring to prevent air entrapment during the stirring process. As soon as the product is activated, the material should be used immediately. Once the paste has been removed from the container for printing, this may introduce contamination. Please do not replace the paste in the container.
Properties of Uncured Paste
|
Test |
Properties |
Viscosity after mixing (Pa.s)
(Lamy, cone and plate 50s-1, 25oC) |
10-30 |
|
Thinner |
This should normally not be required. Use -CH series products for slight adjustments in viscosity and/or replace solvents through evaporation losses. |
|
Coverage |
400 cm2/g |
Paste Processing Conditions
|
Parameter |
Typical Properties |
|
Substrate |
FR4/PCB |
|
Screen |
13 µm emulsion, 325 DPI |
|
Flood Speed |
30 mm/s |
|
Print Speed |
45 mm/s |
|
Squeegee hardness |
60A Durometer |
|
Squeegee pressure |
2 kg |
|
Squeegee angle |
45o |
|
Cured thickness |
~25 µm |
|
Print gap |
1.5 mm |
|
Number of strokes |
2 |
Guideline curing parameters are use of belt furnace at 210˚C for 35 mins, followed by box oven cured at 200˚C for 70 mins.
Properties of Cured Paste
|
Test |
Typical Properties |
|
Thickness |
~18 - 25 µm |
|
Sheet Resistance |
1000 Ω/ □ / mil |
|
Surface Roughness (Ra) |
<1 µm |
|
Adhesion |
5B ASTM D3359 |
|
Hardness |
9H ASTM D3363; ISO 151843 |
The material will withstand over 2 M cycles using a suitable wiper system.
Blending Curve
A specific resistivity can be obtained by blending 2 products in the -CH series. A blending curve is available on request.
Clean-Up
Equipment can be cleaned using alcohols such as propanol.
Storage and shelf-life
Containers should be stored at room temperature (10-25
oC) with lids tightly sealed. The paste shelf-life for an unopened container is 6 months from date of shipment.
The material should not be stored at temperatures below 0oC or greater than 30oC. iCreate Materials cannot assume responsibility for a paste that has not been stored in appropriate conditions or where the pastes have been contaminated following use.
Safety and Handling
For safe use of this product, please review relevant material safety and datasheet (MSDS).