specialty silica for defoamers
SIPERNAT® specialty silica and AEROSIL® fumed silica are used in defoamer, foam inhibitors, foam regulators and/or deaerator formulations based on various hydrophobic liquids such as mineral oil, silicone oil and/or vegetable oil. Properly dispersed in oil, SIPERNAT® and AEROSIL® effectively disrupt the formation of bubbles in most kinds of foams by impairing bubble stability and causing bubbles to burst as they begin to form
SIPERNAT® specialty silica and AEROSIL® fumed silica are effective defoamer boosters (hydrophobic & hydrophilic)
SIPERNAT® specialty silica grades are preferred as carriers for powder defoamer
AEROSIL® fumed silica is often used as a rheology modifier and antisettling agent in oil and emulsion formulations
Detailed product and application information can be found in brochure TI 1313 – “SIPERNAT® and AEROSIL® for Defoamer”.
Defoamer Boosters - Hydrophobic
SIPERNAT® D 10 / SIPERNAT® D 13* / SIPERNAT® D 17
Hydrophobic SIPERNAT® specialty silica allows for the convenient manufacture of effective defoamer and/or foam inhibitors. SIPERNAT® D 10, SIPERNAT® D 13*, and SIPERNAT® D 17 offer the optimal particle size for many industrial defoamer/deaerator applications.
* SIPERNAT® D13 is available in North America only.
AEROSIL® R 202 / AEROSIL® R 812 / AEROSIL® R 812 S / AEROSIL® R 972 / AEROSIL® R 974 / AEROSIL® R 816
Hydrophobic AEROSIL® fumed silica allow for the convenient manufacture of effective defoamer and/or foam inhibitors. They have the optimal particle size for many industrial defoamer/deaerator applications. Due to their adjusted hydrophobicity AEROSIL® R 972, AEROSIL® R 974 and AEROSIL® R 816 are particularly compatible in various coating applications.
Detailed product and application information can be found in brochure TI 1381 AEROSIL® and SIPERNAT® - Efficient Booster for Defoamer in Paints and Coatings“ .
Defoamer Booster - Hydrophilic
SIPERNAT® 35* / SIPERNAT® 383 DS
The hydrophilic silica grades SIPERNAT® 35* and SIPERNAT® 383 DS are ideally suited for in-situ hydrophobization in mineral and/or silicone oil and dry roast hydrophobization. Due to the particle nature, alkaline catalysts are not needed for this reaction. SIPERNAT® 35* and SIPERNAT® 383DS are pre-milled for easy processing and optimal defoamer performance. (* SIPERNAT® 35 is available in North America only).
SIPERNAT® 320 DS
SIPERNAT® 320 DS has a good reactivity with silicone oil when manufacturing hydrophobic booster silica for defoamer. However, a catalyst is needed for optimal hydrophobization results. SIPERNAT® 320 DS is already pre-milled for optimal defoamer performance.
Carrier for Powder Defoamer
SIPERNAT® specialty silica is often used as carrier substance for powder defoamers, e.g. for the construction industry, powder detergents and oilfield applications. Liquid, semisolid, or paste-like defoamer formulations can be converted into powder form by means of SIPERNAT® specialty silica allowing for a more precise dosing and homogeneous distribution.
Detailed information can be found in the brochures TI 1360 “SIPERNAT® and AEROSIL® – an Essential in Industrial Powder Technology” and TI 1213 “Specialty Silica as Flow Agent and Carrier Substance - Recommended Mixing Procedures for Powders and Granulates”.
Hydrophilic and hydrophobic AEROSIL® grades are used as viscosity modifier of oily liquids, like mineral-, silicone-, and vegetable oil. Especially in combination with SIPERNAT® D 10 their thixotropic properties are pronounced.
More detailed information can be found in the brochure TI 1391 “Improving Sedimentation Stability of SIPERNAT® D 10 in Mineral Oil based Defoamer Formulations”.
Technical Information 1313: SIPERNAT® and AEROSIL® for Defoamer
(pdf, 742 KB)
Foam is detrimental to most poduction processes. The use of foam control agents containing Evonik SIPERNAT® and AEROSIL® grades is a cost-effective method preventing for foam problems.
Technical Information 1360: SIPERNAT® and AEROSIL® - an Essential in Industrial Powder Technology
(pdf, 245 KB)
Performance Silica have found their way with numerous applications into many branches of industry. This also applies to their use as carrier for liquid or pasty substances as well as the application as flow aid for powdered or granular products. With numerous hydrophilic and hydrophobic AEROSIL® Fumed Silica as well as Sipernat® Precipitated Silica, Evonik offers the best choice of problem solvers worldwide.
Technical Information 1381: AEROSIL® and SIPERNAT® - Efficient booster for defoamer in paints and coatings
(pdf, 448 KB)
Hydrophobic silica products are well known as efficient booster for defoamer formulations which are used in a variety of industries and applications. This Technical Brochure describes how AEROSIL® fumed silica and SIPERNAT® specialty silica products from Evonik effectively enhance the performance of polyether-siloxane based defoamer formulations in three different latex binder systems commonly used in waterborne paints and coatings.
|Technical Information 1382: Comparison of SIPERNAT® D 10 with in-situ hydrophobized fumed silica (pdf, 356 KB)|
Technical Information 1391: Improving Sedimentation Stability of SIPERNAT® D 10 in Mineral Oil based Defoamer Formulations
(pdf, 660 KB)
SIPERNAT® D 10 is well known in the industry as excellent booster silica for liquid and powder defoamer formulations. AEROSIL® fumed silica is often used to increase the viscosity and thixotropy of liquid formulations such as epoxy resins and special polyurethane systems. Therefore, we systematically studied the effect of selected AEROSIL® fumed silica grades on the sedimentation stability of different defoamer formulations containing SIPERNAT® D 10 as booster silica.