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Dow Corning Unveils Silastic® Fluorosilicone Rubber for High-temp. Auto Applications

Published on 2015-04-27. Author : SpecialChem

Dow Corning, among the global leaders in silicones, silicon-based technology and innovation, unveiled a significant new enhancement to its industry-leading Silastic® Fluorosilicone Rubber (FSR) portfolio at the SAE 2015 World Congress (booth 507). Combining its expertise in formulating, mixing and compounding with its ability to modify polymer structure, the company was able to develop a more heat-resistant Silastic FSR technology for extreme high-temperature applications. This new platform now enables Dow Corning’s FSR-engineered elastomers to meet the demands of customer automotive applications that require long-lasting, reliable performance at temperatures exceeding 220°C.

"With automotive design trending toward smaller engine compartments, increased exhaust gas recirculation and decreased air flow, the high-end temperatures in underhood environments are climbing and, more importantly, driving the performance requirements for FSRs to extremes not previously required," said Craig Gross, senior application engineer for Fluorosilicone Elastomers at Dow Corning. "In collaboration with the automotive industry, Dow Corning has developed an innovative new technology platform for its Silastic FSR line that boosts temperature resistance for extended periods of time and offers expanded flexibility for next-generation automotive designs."

FSRs fall into a special class of silicone polymers that add enhanced chemical resistance to the excellent temperature performance typical of silicone technology. These unique materials withstand long exposure to aggressive automotive fluids, fuels and oils, and conventional grades perform reliably at temperatures reaching 200°C, making them a common material solution for turbocharger hoses, fuel systems and transmission seals. Even with the help of performance-enhancing additives, however, traditional FSR grades are reaching their limits as new automotive designs steadily drive underhood temperatures ever higher.

Dow Corning’s unique expertise as a leading manufacturer of FSRs allowed the company to take a holistic approach to this industry challenge by looking at polymer design, raw materials, additives and processing in order to boost overall material performance. As a result, the company was able to develop a new FSR technology platform that delivers reliable, long-lasting performance at higher temperatures. The company validated these performance improvements by subjecting its enhanced FSR technology to long-term heat aging, fluid exposure and elevated mechanical testing and adhesion to high-consistency rubber (HCR). These tests confirmed that Dow Corning’s advanced FSR technology delivered reliable performance at temperatures above 220°C for extended periods of time.

By leveraging this advanced technology, Dow Corning can now tailor new cutting-edge FSR solutions that target the precise performance needs of customer applications, including easier processing, thinner wall sections, lower weight, reduced systems cost and more stable performance over a broader temperature range compared to conventional solutions.

The company’s enhanced Silastic FSR compounds are available globally, and come as ready-to-use rubber crepe mixtures designed for traditional molding, calendering and extrusion processes.

About Dow Corning


Dow Corning provides performance-enhancing solutions to serve the diverse needs of more than 25,000 customers worldwide. Among the global leaders in silicones, silicon-based technology and innovation, Dow Corning offers more than 7,000 products and services via the company’s Dow Corning® and XIAMETER® brands. Dow Corning is equally owned by The Dow Chemical Company and Corning, Incorporated. More than half of Dow Corning’s annual sales are outside the United States.

Source: Dow Corning


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