Silicones (Si) for Adhesives and Sealants

MasterSil 170 Gel by Master Bond is a two component, low viscosity, addition curing silicone material for sealing, potting and encapsulation. It exhibits excellent optical clarity, extreme softness, very low shrinkage upon cure, low exotherm, very long pot life, and transmission properties. It contains no solvents and will not outgas while curing. It does not require exposure to air for complete cross-linking.

• It has a convenient ten to one mix ratio by weight and can cure in thicknesses beyond 1 inch.
• It withstands severe thermal cycling and resists vibration, shock, gamma radiation, ETO and various chemical sterilants.
• It offers high temperature- and water resistance and superb electrical insulation properties.
• Upon curing, this silicone gel is transparent and is capable of withstanding temperatures ranging from -67°F to +392°F.
• It is used in optical, electronic parts, wire bonds, optical fibers, various chips, LEDs and resistors.
• MasterSil 170 Gel is RoHS complaint.
• It has a shelf life of 6 months.

Silcolease® Emulsion 902 by Bluestar Silicones is silicone emulsion. It cures fastly by a polyaddition reaction in the presence of an organometallic compound. Enables offline/inline converting, high catalysed bath stability, high catalyzed bath stability, versatility and good anchorage. Silcolease® Emulsion 902 is used in association with the catalyst Silcolease® Emulsion catalyst 903 and, if necessary a release control additive, Silcolease® Emulsion RCA 954 and Silcolease® Emulsion Crosslinker 966. Suitable for use in manufacturing adhesives for protectors (labels, personal care, envelopes) and industrial uses (transfer paper tapes).

DISPERCOLL® S 5005 by Covestro is anionic colloidal solution of amorphous silicone dioxide. The proper viscosity for a particular application can be obtained through the addition of nano-zinc oxide to the adhesive formulation. Shows improved moisture resistance and a higher heat resistance. It is intended as a component for waterborne polychloroprene adhesives based on Dispercoll® C dispersions. The shelf life of DISPERCOLL® S 5005 is six months and recommended storage temperature is 10-25 °C.

DISPERCOLL® S 4510 by Covestro is anionic colloidal solution of amorphous silicone dioxide. Shows improved moisture resistance and a higher heat resistance. The proper viscosity for a particular application can be obtained through the addition of nano-zinc oxide to the adhesive formulation. It is intended as a component for waterborne polychloroprene adhesives based on Dispercoll® C dispersions. The shelf life of DISPERCOLL® S 4510 is six months and recommended storage temperature is 10-25 °C.

DISPERCOLL® S 4020 by Covestro is an anionic colloidal solution of amorphous silicone dioxide. It is intended as a component for waterborne polychloroprene adhesives based on Dispercoll® C dispersions. The proper viscosity for a particular application can be obtained through the addition of nano-zinc oxide to the adhesive formulation. Shows improved moisture resistance and a higher heat resistance. The shelf life of DISPERCOLL® S 4020 is six months, and the recommended storage temperature is 10-25 °C.

MasterSil 151S by Master Bond is a silver-filled, two component silicone. It is a vacuum compatible and provides high electrical conductivity, low outgassing and long working life. It has exceptionally long working life and offers high resistance to temperature, mechanical and thermal shocks.

• It bonds well to a wide variety of substrates including metals, ceramics, glass, composites as well as many types of rubber and plastics.
• It exhibits good dimensional stability, elongation, low shrinkage upon curing and good flexibility.
• It is ideal for bonding, sealing and coating applications.
• Recommended for aerospace, electronic, opto-electronic and OEM applications.
• MasterSil 151S is RoHS compliant and meets NASA Low Outgassing specifications.
• It has a shelf life of 3 to 6 months.

Silcolease® PSA 408 by Bluestar Silicones is a solution of polydimethyl siloxane gum and resin diluted in toluene. It is a silicone pressure sensitive adhesive (PSA). Exhibits excellent performance in terms of tackiness and peel, good temperature performances, moderate viscosity, moisture and aging resistance. Offers improved production efficiency( high cure speed). Silcolease® PSA 408 is used in high performance pressure sensitive masking tapes, electrical tapes and splicing tapes.

CAF® 33 by Elkem Silicones is a non-flowing, black, white translucent, room temperature curing silicone elastomer. Exhibits high temperature resistance, heat stability, good dielectric properties, water & humidity resistance, anti-freeze resistance and high resistance to chemical agents. Offers adhesion with primer on many surfaces including stainless steel, aluminium, polymethyl methacrylate glass, Composites filled to 30% with glass fiber (polyamide, polyester, polypropylene) and ABS. CAF® 33 is suitable for bonding/sealing in automotive applications like engine & sunroofs, domestic appliances like oven door brackets & washing machine tanks, aeronautic applications and industrial applications including molding compartments, HCR silicones and rotary machines (pumps, turbines, compressors).

Andisil® HMDZ by AB Specialty Silicones can be utilized as a protecting agent for OH and SH functionality. It can be used as a hydrophobic agent for inorganic fillers. It is available in a clear, colorless liquid form. Andisil® HMDZ is suitable for adhesives and sealant applications.

MasterSil 153Med by Master Bond is a two-component silicone compound with a paste consistency for high performance bonding and sealing. It is 100% solids and contains no solvents. It has superb electrical insulation properties, exceptionally long working life and very low exotherm. It possesses self-priming feature and bonds well with cured silicone rubber.

• It is an addition cured system and does not require exposure to air for cross-linking.
• It readily cures at ambient temperatures or faster cure at elevated temperatures.
• It has the ability to withstand severe thermal cycling and resist vibration and shock.
• It provides very long pot life, low shrinkage upon cure, high flexibility, high temperature- and water resistance.
• It bonds well to a wide variety of substrates including most metals, many plastics, glass and ceramic.
• It exhibits high tensile lap shear strength and is used for medical device applications.
• It has a shelf life of 6 months.
• MasterSil 153Med is RoHS complaint, meets USP Class VI and ISO 10993-5 specification for Cytotoxicity.