Adhesives & Sealants
Gelest supplies products for various functions in adhesive and sealant applications. These include:
Advanced Ceramics
Advanced ceramics are used today in many applications and the market continues to grow at close to 10% per year. The various types of advanced ceramics include oxide, carbide, nitride, boride, and nano-sized ceramic powders. Gelest offers many products which can be used as precursors to the required advanced ceramic…
Catalysts
Gelest offers a variety of materials that act as catalysts for various synthetic organic transformations. Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst. With a catalyst, reactions occur faster and require less activation energy. Catalysts are…
Conductive Coatings
A wide variety of materials can be engineered to provide different degrees of electrical conductivity, such as copper, aluminum, and molybdenum. Iron-chrome-aluminum and molybdenum-disilicide are commonly used for higher temperature applications. Some oxide ceramics are used as conductors and semiconductors for specialized applications. Conductive and non-conductive coatings that generally incorporate…
Coupling Agents
A coupling agent is a compound which provides a chemical bond between two dissimilar materials, usually an inorganic and an organic. Organosilanes are well-suited in this application because of the ability to incorporate an organic-compatible functionality and an inorganic-compatible functionality within the same molecule. Organofunctionality—like amino, epoxy, acrylate, methacrylate, mercapto,…
Elastomers
Gelest ExSil® is a two-component high elongation silicone elastomer developed for molding applications. Features include self-healing, high recovery, high elongation, low extractables, high tear strength, high compression set, high oxygen permeability, and long-term thermal stability. The material is flowable and moldable and is available in two grades.
Hydrophilic Materials
While hydrophilic materials are often characterized by their affinity for water, they can generally be described by their interactions with polar and non-polar substances. Hydrophilic materials have more thermodynamically favorable interactions with water and other polar solvents, such as ethanol, than they do with oil and non-polar solvents, such as…
Hydrophobic Materials
Gelest offers a wide range silanes and silicones for use as surface modifiers. One of the most desired after properties is hydrophobicity. This property can be used for such things as rendering glassware water repellent or affecting the wetting of water on a substrate causing it to bead up and…
Nanotechnology
Gelest’s silanes, silicones, and metal-organics are key components in a variety of nanotechnologies ranging from materials which owe their fundamental characteristics due to nanoscale fabrication, such as quantum dots, to coating and particulate materials that fabricate structures directly on the nanoscale level which relate to their bulk behavior. Gelest can…
Optical Coatings
Optical coatings affect an optical component’s ability to transmit and/or reflect light. A thin film optical coating deposition on an optic can impart different behaviors, such as antireflection for lenses and high reflection for mirrors. Optical coating materials containing silicon and other metal atoms can be used in a wide…
Plastics
Plastics are synthetic or natural long-chain organic materials with near infinite applications. Most plastics have the following general characteristics: provides a high degree of resistance to chemicals, can act as thermal and electrical insulators, can be light and vary in strength, and can be processed into thin and/or intricate forms.…
Polymer Synthesis
Gelest offers hundreds of products for use in polymer synthesis. Product categories include monomers, macromers, prepolymers, catalysts, and initiators.
Self-Assembled Monolayers (SAMs)
A self-assembled monolayer (SAM) is a one molecule thick layer of material that bonds to a surface in an ordered way as a result of physical or chemical forces during a deposition process. Silanes can form SAMs by solution or vapor phase deposition processes. Most commonly, chlorosilanes or alkoxysilanes are…
Successive Ionic Layer Adsorption and Reaction (SILAR) & Layer-By-Layer (LBL)
Successive ionic layer adsorption and reaction (SILAR) and layer-by-layer (LbL) are thin film fabrication techniques and are increasingly associated with the utilization of silanes and silicones. The films are formed via the deposition of alternating layers of oppositely charged materials with wash steps in between. SILAR typically employs solutions of…
Silicon-Based Lubricants
Due to the weak intermolecular forces the silicones themselves are not, in general, strong lubricants in high-load-bearing applications. In these applications they are most used with additives to enhance the load bearing properties. On the other hand, the silicones can function over a wide temperature range. Phenyl-containing silicone fluids show…
Silicone Heat Transfer Fluids
Gelest offers four different classes of silicone fluids: thermal, conventional, fluorosilicone, and low temperature. Thermal silicone fluids are described as aromatic siloxanes. The phenyl groups enhance oxidation resistance, thermal stability, and shear resistance. The phenyl groups offer better protection of the chain Si-O-Si-O by steric hindrance and phenyl itself has…
Sol Gel Applications
Gelest offers a wide range of metal alkoxides for use in sol gel applications. Sol gel is a method for preparing specialty metal oxide glasses and ceramics by hydrolyzing a chemical precursor or mixture of precursors that pass sequentially through a solution state and a gel state before being dehydrated…
UV-Electron Beam (UV-EB)
Organic-modified polysiloxanes are generally recognized as the newest generic class of high-performance protective coatings and materials. They have gained wide ranging commercial acceptance over the last ten years and are now used in a host of applications. In past decades, silicone-acrylates and methacrylates have been widely used in lens materials,…
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