Technical Bulletin (YKC-7000)
Outlines:
Conductive paste YKC-7000 is designed for fast curable and as an one-component type of carbon paste. This product has an excellent flexibility, adhesion and printability.
Cured YKC-7000
has high surface hardness and flat smooth surface condition with high moisture
and heat resistance.
Application
fields:
YKC-7000 can be
applied on keyboard-contact, jumper-circuitry and carbon through-hole mainly.
Characteristics:
|
Items |
Value |
Method |
|
Color, State |
Black, paste |
Visual test |
|
Solid contents |
53.0 wt% |
130deg.Cxl hour in air-oven |
|
Specific gravity |
1.21 |
Specific gravity cup method |
|
Viscosity (at 25deg.C) |
400 ps |
Visco-tester VT-04 model |
|
Curing condition |
150deg.C, 5 min. |
In air-oven |
|
Shelf/Pot life |
6 months |
Room temperature |
|
Surface hardness |
4 H |
JIS D 0202 |
|
Grain size |
Under 2 micron |
Grind gauge |
|
Adhesion |
100/100 |
JIS D 0202 |
|
Heat resistance |
*±3.0% |
260deg.Cx5sec.(solder dipped) |
|
Moisture resistance |
*±8.0% |
40deg.Cx95%RH |
|
Sheet resistance |
Less than 30 |
15 micron |
|
Solvent resistance (at 25deg.C) |
*±0.1% |
Dip in 1.1.1. trichloroethane, acetic-ether, toluene |
|
Acid resistance |
*Under 1.0% |
Dip in rubber hydrochloride (N/10) |
|
Special thinner |
Solvent #700 |
Thinner for YKC-700 |
Direction
to use:
l Stir up thoroughly before use.
l Use as supplied without dilution.
l Use special thinner #700 to dilute, if the viscosity of YKC-7000 gets too high. Diluting ratio should be set under 5 wt%.
l Clean the coating area thoroughly before application.
l Use 150 to 250 meshes polyester or stainless screen for coating.
l Curing process should be operated at 150deg.Cx15min. in an air-oven.
l Use chloride hydrocarbon-based solvent to clean the tools and screens.