AEROSIL® for Adhesives and Sealants - Adhesives & Sealants by ...

Uses for silicone sealants in bathrooms(e.g. leak-proofing shower stalls)Application of a silicone sealantAEROSIL® – Advantagesfor Silicone Adhesives and SealantsWhen it comes to reinforcement and transparency, AEROSIL® is essentialOne of the most important applicationsof AEROSIL® fumed silica in the adhesivesand sealants industry is its use as an activereinforcing filler to improve the mechanicalproperties of silicone sealants. WithoutAEROSIL® fumed silica, the mechanicalproperties of silicone sealants would beinadequate, making it impossible toperform as a watertight, durable fealbetween similar and dissimilar materials.AEROSIL® fumed silica is also usedsuccessfully in transparent silicone sealantsfor waterproofing tub surrounds andshower stalls.Glass has become a fashionable buildingmaterial over the past few years. All-glassconstructions do not merely fulfill modernanesthetic desires; they also improve theacoustic properties of buildings, offersuperior protection from weathering,and guarantee an excellent interior livingenvironment. Structural glazing is usedfor the static bonding of glass to a metalconstruction. These adhesives generallyconsist of one- or two-componentsilicone materials. AEROSIL® fumed silicaimproves both the mechanical andrheological properties of these materialsin this relatively new application.The AEROSIL® fumed silica grade withthe best properties for this importantapplication is dependent upon thedemands made by the manufacturer onthe formulation of the silicone sealant.AEROSIL® 150 and AEROSIL® R 972 areAEROSIL® grades most frequently used inthe formulation and production of siliconesealants. AEROSIL® 150 demonstratesvery good reinforcing properties insilicone sealants, and also improves theirprocessability. The hydrophobic gradeAEROSIL® R 972 offers further advantagesover the hydrophilic grade AEROSIL® 150;for example, an improved storage stability6