Silicone Technical Datasheet - Holroyd Components - #1

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Silicone Rubber Insulated Heating Elements Holroyd Components Ltd. Shire Hill Industrial Estate, Saffron Walden, Essex CB11 3AQ United Kingdom Tel: +44 (0) 1799 523177 Fax: +44 (0) 1799 513714 sales@holroydcomponents.com www.holroydcomponents.com UL and VDE approved manufacturing facilities www.holroydcomponents.com Technical Datasheet Applications: Silicone rubber is ideally suited for the production of heater mats with it’s low thermal mass and superb electrical insulation properties, it allows high power densities with fast response to temperature control. With silicones wide temperature range tolerance of –60°C to 230°C, being thin and lightweight it has a distinct advantage over other forms of heating elements. Where direct precise and intimate heating is required silicone heaters are the ideal solution. Wire Wound: Using evenly spaced resistance wires laminated between sheets of silicone, wire wound mats are ideal for prototyping or problem solving applications. Manufactured to customer specifications they can be made in a limitless range of shapes and sizes. High flexibility can be obtained using tough, robust materials which are finding ever increasing applications in industries. Etch Foil: Computer designed chemically etched foil tracks are laminated between thin sheets of silicone to give precise even heating. Suitable for both low and high volume production Etched foil heaters have rapid heat up properties with precise temperature control. Available in a limitless range to customer specification etch foil heaters provide heating solutions in a multiple of industries. Type: H/SR=Holroyd Silicone Rubber H/SR-A=Holroyd Silicone Rubber Adhesive Dimensions: Width 940mm maximum Length 3000mm maximum Nominal Thickness H/SR 0.7mm-3.0mm H/SR-A 0.8mm-3.0mm Construction: Two ply woven glass textile reinforced silicone rubber Temperature: H/SR -60°C to +200°C maximum continuous 230°C short term H/SR -20°C to +180°C maximum continuous 230°C short term Installation & Fixing: Our self adhesive option is a quick and simple fixing method which provides superb bonding results to many surfaces including low energy materials. Where removal of the heater is necessary alternative fixings are available such as hooks and straps as well as Velcro and magnetic backed options. Most mechanical fixing methods can be accommodated.
Custom Design
Etch Foil and Wire Wound Technology
Precise Even Heating
Flexible and Lightweight
Moisture and Chemical Resistant
Wide Temperature Range -60 to 230°C
UL and VDE Approval available
Low Smoke and Low Toxicity options available
Full Design and Manufacturing Service Physical Characteristics:
Weather & Ageing resistance – Very Good
Ozone resistance – Very good
Gas Permeability – Adequate
Steam Resistance – Good: up to 130°C or 2.5 bar
Fungus & Bacteria Resistance- Very Good
Combustibility-Various Flame retarding materials available
Good Resistance to – Acetone, Alcohol, Formic Acid, Brake Fluid, Chlordihenyl, Acetic Acid, Greases, Polar Solvents, Hydrchloric Acid 10%, Sulphuric Acid 10%, Waxes, Plasticisers
Thermal Conductivity-Watt/Meter/K 0.22
Specific Heat- Joule/Kg/K 1623