Appliance Design - May 2008 - (Page 27)

ELASTOMERS Silicone rubber from Dow Corning that can be modified to get the required properties for the application. Tubing made from NuSil’s silicone elastomer. hardness, the hardness levels vary by product and application, but the hardness range could go from 10 to 70 shoreA. Momentive Performance Materials, Wilton, Conn., recently contracted with Willat Design Works, a company that designs with silicone, to produce Elexium, a reformable “ergomorphic” product that conforms to the pressure of the human touch. Momentive will provide the silicone elastomer and silicone gel materials that will be used by Willat. The silicone elastomer will be overmolded onto a silicone gel interior. This creates a custom fit, as well as form memory that will allow the finished good to return to its original shape. The Los Angeles-based Willat will create products for the medical and dental industries. In those industries, the materials often need to be high heat resistant so that the devices can be sterilized in an autoclave, which makes silicone elastomers a perfect choice, says Sharon Shatto, Americas marketing director for health care for the elastomers division for Momentive. In terms of heat resistance, silicone elastomers work well at both the extreme low and high end of the temperature range. While, typically thought of in terms of high heat resistance, silicone elastomers can also be used at very low temperatures such as those that might be applicable to aerospace applications. Some materials have a range from –50 DegF to up to 400 DegF. Momentive has tested some of its silicone elastomers out to 1,000 cycles in an autoclave with good results, Shatto says. Momentive recently introduced a new fully fluorinated silicone liquid elastomer that is offered in a hardness range of 40 to 70 shoreA. The 40-shoreA oilbleeding FFSL could be used for connectors, the 50 to 60 shoreA can be used for membranes, seals and gaskets and 70 shoreA can be used for O-rings. The fluorine atom makes the silicone elastomer even more resistant to harsh chemicals. The previous generation of fluorinated LSR, known as FSLs, withstood exposure to diesel/ RME and hot oils, and the new FFSL has the same capabilities. With increased levels of fluorine, additional chemical resistance is Over 65 Adhesive & Dispensing Manufacturers! ISO 9001:2000 Assembly Adhesives & Expert Solutions Silicone Elastomers Thermal Management Solutions UV Curing & Dispensing Equipment Electronic & LED Assembly & Protection Global Reps with Adhesive, Dispensing, Curing & Cost Saving Solutions www.ellsworth.com 800-888-0698 Shop • RFQ • Online Tech Support • MSDS / TDS Search A range of products produced at Phillips Plastics using liquid silicone elastomers with a two-shot method. www.applianceDESIGN.com AD05084Ells.indd 1 2 0 0 7 E l e c t ro n i c s D i s t r i b u t o r o f t h e Ye a r For more Information Enter 105 applianceDESIGN May 2008 27 4/8/08 10:05:18 AM http://www.ellsworth.com http://www.ellsworth.com http://www.appliancedesign.com

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Appliance Design - May 2008 Contents Editorial Shipments/Forecasts News Watch New and Notable Displays & Indicators Elastomers Quality & Standards Indoor Air Quality IHHS Highlights New Products Classifieds Design Marts Advertiser’s Index Association Report: PSMA

Appliance Design - May 2008

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