Similar to silver-pigmented conductive preparations, precious-metal-free, graphite-pigmented conductive preparations are also based on decades of experience in production. The close cooperation with the customer has enabled DODUCO as producer to develop a selection of precious-metal-free conductive preparations that cover a broad area of use.
DODUCO’s range of precious-metal-free graphite-pigmented conductive preparations includes:
- Graphite conductive varnishes
- Graphite conductive pastes
Packaging sizes of 1 kg product per unit have proven their worth for practical use. The diluents can be delivered in different amounts as well depending on your needs and upon request.
Both DODUCO’s graphite conductive varnishes and graphite conductive pastes are sold under the brand name of GRAPHAROL®. Both product groups are made conductive by the addition of a special graphite pigment. Thus, the product will often have enough conductivity and offer a cost-efficient alternative for precious-metal-containing products. However, if you have any greater requirements to the conductive layer, you should use a silver-containing conductive product.
Similar to the silver conductive preparations, graphite conductive preparations adhere well to many plastics and other carrier materials. The solvents contained permit quick drying even at low temperatures and simple processing.
The thinly liquid graphite conductive varnishes are usually applied by spraying or with a brush. More viscose graphite conductive pastes are recommended for screen printing. Additional of a suitable diluent (information available on request) permits variation of the viscosities as required.
Depending on the area of application (carrier material, drying requirements), there are mostly two types distinguished:
- Graphite preparations on acrylate resin basis and
- Graphite preparations on acrylate-polymer basis
DODUCO’s graphite-pigmented conductive varnishes und conductive pastes are used for/in:
- antistatic equipment of containers and tubes
- Heating and warmth conductors
- Production of high-ohmic printed circuits and contact bridges in PCB production
- Printing over silver conduction tracks to increase corrosion and migration resistance