Adhesives and sealants

Adhesives and sealants are employed in many different industries, and are increasingly finding new applications, especially in the automotive industry.

Thanks to the development of special hydrophobic AEROSIL^® fumed silica, it has been possible to produce structural adhesives that belong to the future technologies in automobile construction. Modern structural adhesives enable the joining of various materials, such as steel, aluminum, magnesium, and plastics. The use of new processes, such as weld bonding, which combines the individual advantages of gluing and spot welding, makes it possible to improve the mechanical strength of the automobile body (chassis), especially for improving the crash safety and sound dampening.

Furthermore, structural adhesives have made it possible to construct lightweight design components, such as bonded roof modules.

Numerous systems can benefit from the technical advantages and improvements that may be achieved with Evonik's large selection of AEROSIL^® grades, which have been specially developed for the adhesives and sealants industry. These special AEROSIL^® grades not only improve the rheological and mechanical properties, but also act as anti-settling agents, and improve the storage stability and processability of adhesives and sealants.

AEROSIL^® milestones for the adhesives and sealants industry
Introduced to the market	AEROSIL^®grades/new products	Applications
1963	AEROSIL® R 972 Development of the first hydrophobic fumed silica in the world	Adhesives and sealants based on silicone, polyurethane, polysulfide
1986	AEROSIL^®R 202, AEROSIL^®R 805, AEROSIL^®R 812, AEROSIL^®812 S	Adhesives and sealants based on epoxy, polyurethane, vinylester resin
1995	AEROSIL^®R 104, AEROSIL^® R 106, AEROSIL^® R 816 Introduction of a partly hydrophobic grade of AEROSIL^® fumed silica Introduction of the new VV compaction technology for fumed silicas	Adhesives and sealants based on silicone, water-based adhesive and sealant systems
1998	AEROSIL^®R 8200 Introduction of a new structure-modified type of AEROSIL^® fumed silica	Adhesive and sealants based on silicone, epoxy, polyurethane
2001	AEROSIL^® R 7200, AEROSIL^®R 711 Introduction of AEROSIL^® grades rendered hydrophobic with methacrylate functional silanes	Adhesives and sealants based on acrylate, polyester, vinylester resin
2005	AEROSIL^®R 9200 Introduction of a new structure-modified type of AEROSIL^® fumed silica	Adhesive and sealants based on silicone, epoxy, polyurethane

Adhesives and sealants

Adhesives and sealants are employed in many different industries, and are increasingly finding new applications, especially in the automotive industry.

Further information