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Datec has used Vicote coatings to insulate the top and bottom dielectric layers of its thick-film technology, which it designed for applying a high-power electric heat source to an aluminum substrate.

Datec’s thick-film heating system has integral conductive and resistive layers, which are screen-printed directly onto an aluminum heat sink that is coated with Vicote Coatings.

This UL-recognised and RoHS-compliant technology is used to manufacture fast-acting, low-profile heaters that offer high thermal conductivity and responsiveness for a range of industrial and consumer products.

‘The key to Datec’s innovation is the combination of the dielectric material containing the Vicote Coating and the patented conductive and resistive materials,’ said Dominic Talalla, chief executive officer, Datec.

‘The Vicote Coating is an excellent binder which, when combined with our other components, creates a strong bond to the substrate and provides excellent dielectric strength,’ he added.

‘It works very well with our resistor and conductor layers and, together, the layered system absorbs thermal expansion mismatch between the heating layers and the substrate,’ Talalla said.

Vicote Coatings are based on the Victrex PEEK polymer thermoplastic material.

The coating’s crystalline structure provides scratch and wear resistance, strength and durability – especially at high temperatures – leading to longer-lasting components.

The dielectric properties of Vicote Coatings ensure even temperature distribution with no hot spots, fast heating, and high energy density.

The result is faster, more accurate operating cycles and a reduction in energy consumption by 20 per cent.

‘Another key aspect of our technology is that it is processed at low temperatures – well below the 850C (1,076F) required to process glass-frit-based thick-films, enabling the use of new substrates and reduced manufacturing costs,’ said Talalla.

Victrex Europe

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