Skip to content
Skip over generic navigation
Skip over primary navigation
Skip over visual
Skip over functional column
Tensile testing machine for determination of mechanical properties such as tensile strength, elongation at break, and tear resistance of cured silicone rubber
Silicone rubbers with AEROSIL® fumed silica as the active reinforcing component play an important role in earthquake-proof foundations. The Japanese-developed technology of using silicone rubber as an important ingredient of building foundations especially in endangered regions. For this purpose, conventional building materials are combined in a special process with layers of Silicone Rubber for which the parameters have previously been calculated with high precision.
RTV two-component silicone rubber is used not only for sealing purposes in this application, but also to provide the foundation with a special elasticity at both high and low temperatures. RTV two-component silicone rubber is a free-flowing or slightly pasty consistency ready-to-use two-component system, which, under the action of across linker-catalyst system tailored specifically to these systems, are cured at room temperature to an elastic silicone rubber. AEROSIL® fumed silica imparts to the silicone rubber the required rheological and mechanical properties.
The use of AEROSIL® fumed silica as a reinforcing filler allows significant improvement of the mechanical properties of, e.g. various sports goods made of HTV Silicone Rubber
The use of AEROSIL® products as reinforcing components in elastomers allows for lasting improvement of such mechanical properties of the cured Silicone Rubber as tensile strength, elongation at break, and tear resistance.
AEROSIL® fumed silica also helps to control the temperature dependence of the mechanical properties. The scope for improvement of the above-mentioned properties depends on the type of silicone polymer used as well the concentration and the chosen AEROSIL® grade.
Besides AEROSIL® fumed silica Evonik offers special precipitated silica as a reinforcing filler for silicone rubber. These products are sold under the brand name SIPERNAT® precipitated silica and bring a very high flexibility and a low compression set to the major silicone end-products like e.g. keypads for PCs and mobile phones.
If you would like to get more information about our SIPERNAT® grades, please use the following link: SIPERNAT®
Industry Information 2247: Materials for the Silicone Rubber Industry
Technical Information 1148: AEROSIL® R 104 and AEROSIL® R 106 for silicone rubber applications
Technical Information 1209: AEROSIL® R 8200 for Silicone Rubber
Technical Information 1253: AEROSIL® and AEROXIDE® for Liquid Silicone Rubber (LSR/LIMS)
Technical Information 1374: Products for 1-component RTV silicone sealant compounds
Product- as well as safety data sheets (SDS) of our various AEROSIL® fumed silica grades, can be found at our product recommendationsmore