AEROSIL Fumed Silica - Silicone Conference in Kunming China
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AEROSIL® Fumed Silica from Degussa

Silicone Conference - April 23rd, 2008 in Kunming, China

Information Exchange Conference for Additional Polymerization Type Liquid Silicone Rubber

 

The conference is co-organized by China Fluorin-Silicon Organic Materials Industry Association Silicone Committee, National Synthetic Resin and Plastic Industry Information Center Silicone Industry Information Branch and "Silicone Materials" Editorial Department. The topics for the conference will be:

  • Current product situation and trend for additional type LSR in global and China market
  • New process, new technology and new equipment for additional type LSR
  • The R&D, Production and application for new additives and fillers for additional type LSR
  • Test and analytical method for additional type LSR

 

Do not miss our technical paper:

 

A new Generation of AEROSIL® fumed silica -
Tailor-made for high transparent Silicone Rubber

Michael Kempf, Romex Wu, Shen Lan, Michael Chen (Evonik Degussa China Co., Ltd.)
Dr. Mario Scholz (Evonik Degussa GmbH, Germany)

AEROSIL® products provide a set of properties in Silicone Rubber and Sealants. To adjust the rheological properties of RTV-1C Silicone Sealants, RTV-2C- and Liquid Silicone Rubber (LSR/LIMS) a variety of different hydrophilic and hydrophobic AEROSIL® grades with specific functionality are available. Reinforcement and heat stability are often very important for a multitude of applications of HTV/HCR and LSR. For many applications, e.g. medical devices, electronic and sports goods, structural glazing or products of our daily life like baby bottle nipples, a high transparency is requested by the end user. Without fumed oxides many of the desired properties of the final Silicone Rubber products could not be achieved.

Standard AEROSIL® grades with high surface areas, e.g. AEROSIL® 300 offer already an acceptable degree of optical properties. However for Evonik Degussa´s researchers the target was to provide an AEROSIL® fumed oxide providing excellent optical properties, especially for high transparent applications. Therefore we developed a new and innovative production process, which enables us to adjust the structure of our new AEROSIL® products, e.g. AEROSIL® 300 SP, which is highly suitable for HTV and LSR.

Apart from excellent transparency levels, the new SP-grades can provide several advantages. It is possible to achieve higher silica loadings in the master batch process. Easy compounding and fast hydrophobization (“in-situ”) results in a reduced batch time. Not only a higher capacity can be gained, also other important Silicone Rubber properties like crepe-hardening, mechanical and optical properties can be influenced in a very positive way. 

 

For further information, please contact us at aerosil@evonik.com

 

 

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