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Rogers Offers Two Lines of Substrates for Flexible Heaters:

Silicone Rubber and Polyimide.

The use of flexible silicone composite materials is the standard for high temperature heaters. Arlon manufactures a full line of reversion-resistant silicones for use in the heater industry, including those for etched foil and wire wound heater applications. Arlon offers products that meet UL94-HB and UL94-V0 flame resistance.

Standard Silicone Dielectric

The use of thin, flexible silicone rubber/fiberglass fabric composite materials is the standard for high temperature heaters. Rogers manufactures a full line of silicone rubber/fiberglass fabric composites with UL-recognized relative thermal index (RTI) ratings up to 220ºC (428ºF), flammability ratings for horizontal burn (HB), and the highest resistance to vertical burn (UL94 V-0) for electrical insulation of flexible heaters. These materials are available with prebonded resistive foils, such as Inconel 600 and stainless steel. This eliminates the initial bonding step which realizes reduced processing costs. Rogers’ silicone rubber/fiberglass fabric composites operate reliably, and offer long service life in both wire-wound and etched foil heater applications.

raPId Polyimide Dielectric

ARLON raPId polyimide substrates are comprised of a revolutionary new construction that incorporates the benefits of polyimide heater dielectrics with the flexibility and usability of a silicone adhesive system. The raPId substrates process in less time and at lower temperatures than competitive acrylic or FEP adhesive systems with zero circuit swimming. The unique silicone adhesive system enables the manufacture of etched-foil and wire-wound flexible heaters with improved thermal stability and low outgassing performance. Flexible heaters manufactured with raPId substrates have a continous operating temperature of 220ºC (428ºF). They can be bonded to wire or metal foil elements at 121ºC (250ºF). In the event of an overtemperature situation, either due to a hot spot or a runaway heater, ARLON raPId substrates will not melt like FEP fluoropolymer.