(Formerly PROTAVIC® C 3513 S)
The PROTAVIC® VCO 60130 is a pure silver-filled electro-conductive ink which is supplied as a single component and is specially adapted for silk screen printing. Its characteristic features are : fineness, good electrical conductivity and good adhesion on all substrates, especially on polyester sheets. It is therefore suitable for producing flexible circuits and keyboards.
Once cross-linked, the PROTAVIC® VCO 60130 provides excellent protection against the environment, because of its modified vinyl base. After its solvent phase has evaporated, it leaves semi-rigid films which possess:
- excellent adhesion not only to polyester type
- thermo-plastic films but also to metals, ceramics and thermosetting materials
- a very high electrical conductivity
- excellent resistance to heat
- good resistance to flexing
- good abrasion resistance
METHOD OF USE
A – Application process
Before the PROTAVIC® VCO 60130 is used, it must be made absolutely homogeneous by stirring it in its original container (using a spatula for small amounts or by rolling the flask for several hours at low speed – between 15 and 60 rpm. With the PROTAVIC® VCO 60130 there is no need for an undercoat since it adheres through the evaporation of the solvent system. Surfaces on which it is to be applied should be dry and free from
oil, grease or dust. The PROTAVIC® VCO 60130 is applied as delivered, after having been homogenized as described previously. Its original viscosity makes it well suited to screen printing with a mesh size of between 70 and 270 mesh (to the inch). Use polyester screens with a mesh of between 140 and 200 or stainless steel screens with a mesh of between 170 and 230. Under these conditions, and with emulsion thickness of 10 to 30 microns, layers of the PROTAVIC® VCO 60130 are in the region of 5 to 15 microns. The thickness of the layer can be gradually reduced by adding between 0.5 and 2.0 % of diluent (only use PROTAVIC® 913 diluent). The PROTAVIC® 913 diluent is also recommended
for compensating for evaporation on the screen. It can also be used for removing any the PROTAVIC® VCO 60130 incorrectly deposited before it has dried and also for cleaning the application equipment.
B – Drying
It is possible to dry the product at ambient temperature, but tens of hours may be needed,
depending on the properties which the user is seeking to achieve. The PROTAVIC® VCO 60130 can be dried in a ventilated oven (set at around 65°C). It requires between a few minutes and a quarter of an hour for the solvent to evaporate, depending on the thickness
deposited. Infra red drying is also possible.
C – Curing conditions
The PROTAVIC® VCO 60130 can be cured at 110°C for 3 to 10 minutes in a well ventilated oven. Very good adhesion and conductivity results are achieved with a curing cycle of 3 minutes at 125°C. Temperatures in the region of 125°C produce very good results with curing times of less than 15 minutes. Curing temperatures over 125°C do not bring any benefits and must be avoided.
The good mechanical and electrical properties of the PROTAVIC® VCO 60130 make it especially suitable for producing conductive tracks on flexible or rigid circuits by screen printing. Its main applications in the professional electronics industry and among the general public are:
- producing flexible keyboards
- flexible circuits
- electro-conductive coatings for electro-magnetic screening
However, the PROTAVIC® VCO 60130 can not be used with the PROTAVIC® ACE series. It is then recommended to use the PROTAVIC® VCO 60100 or the PROTAVIC® VCO 60110.
STORAGE LIFE AND STORAGE CONDITIONS
The PROTAVIC® VCO 60130 can be stored in its original sealed container for 1 year below 25°C. It does not give rise to very hard sediments but it must however be re-homogenized for about 1 hour using a slow mixer at 15-60 rpm. Only PROTAVIC® 913 diluent should be used to compensate for any evaporation of solvent.
PRECAUTIONS IN USE
Refer to the attached safety data sheet.
The PROTAVIC® VCO 60130 is supplied in 25 g and 100 g pots, or in 500 g and 1000 g boxes.