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Wacker Introduces New Silicone Elastomers for Automotive Industry

Published on 2010-10-27. Author : SpecialChem

Munich -- Wacker is introducing two new silicone products for the automotive industry at the 18th International Trade Fair for Plastics and Rubber(A10, Hall 06). The products are the silicone elastomers ELASTOSIL® LR 3092/65 and ELASTOSIL® R plus 4060. Both product innovations have a very low compression set and high heat resistance and consequently make ideal sealing materials, for example in intercoolers. In addition, spark-plug boots made of ELASTOSIL® R plus 4060 afford optimum protection against moisture and water splashes even at high temperatures. K 2010 will take place from October 27 to November 3 in Düsseldorf, Germany.

Exhaust-gas turbochargers could be considered the heart of modern diesel engines, because they substantially boost engine power and torque. A key element here is the intercooler, which is placed between the turbocharger and the engine. It lowers the high temperatures resulting from compression of the intake air and ensures that a greater mass of air and thus of oxygen is routed to the cylinders.

For the intercooler to do this job properly over the engine's lifetime, it requires a seal with minimal compression set. This is where the new ELASTOSIL® LR 3092/65 and ELASTOSIL® R plus 4060 silicone elastomers come in. ELASTOSIL® LR 3092/65 is a rapid-cure, two-component liquid silicone rubber that can withstand temperatures of up to 220 ®C. By contrast, ELASTOSIL® R plus 4060 is a one-component solid silicone rubber that has the same basic properties, but can take even more heat. Both products have very low compression set and can be injection molded.

A further application is the membrane used for controlling the charge pressure in the turbocharger with the aid of an actuator. The latter prevents a pressure overload in the cylinder. The low compression set and high heat resistance of ELASTOSIL® LR 3092/65 and ELASTOSIL® R plus 4060 make them eminently suitable for such applications, too. ELASTOSIL® R plus 4060 is also ideal for the manufacture of spark-plug boots. The silicone rubber provides excellent protection against moisture, dirt and water splashes. The elastomer's combination of high heat resistance and low compression set is another plus in this application, too.

Visit Wacker at K 2010 in Hall 06, Booth A10, Düsseldorf.

About Wacker

Wacker has produced Silicones in China since 2004 for use in many challenging applications, including in the automotive, construction and electronics sectors. At Wacker's Nanjing site, production of dispersions and dispersible polymer powders began last November. Primarily supplied to the construction sector, these products are found, for example, in insulation systems, tile adhesives and ready-mix mortars. In total, Wacker's Chinese operations comprise four production sites, two technical competence centers and seven sales offices spanning the country's key economic centers. In 2009, Wacker posted sales of over €730 million in China, including Taiwan. The Munich-based chemical company has been present in China with own sales offices since 1995.

About Wacker Silicones

Wacker Silicones is one of the world's largest silicone manufacturers, with over 3,000 highly specialized and innovative products. The division's portfolio ranges from silicone fluids, emulsions, resins, elastomers and sealants to silanes and pyrogenic silicas. These products stand out due to their significant value-adding potential - enhancing both the benefits and performance of customers' end products. Wacker Silicones' products find application in such sectors as construction, chemicals, cosmetics, textiles, automotive, paper and electronics. In 2009, Wacker Silicones generated overall sales of €1.24 billion - 33 percent of Wacker's consolidated sales.

Source: Wacker


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