Technical Library

Outline

HardSil™ CC Clear Casting and Impregnation Resin PP2-HSCC

Applications:

  • electrical components – high temperature, high power encapsulating and mounting resin
  • laminated structures – hard, heat resistant impregnants for continuous exposures up to 300 °C
  • X-ray equipment – radiation resistant encapsulating resin

Description: HardSil™ CC is a peroxide curable solventless silicone resin supplied with catalyst. Provides rigid silicone resins with excellent optical properties. HardSil™ CC is a curable phenyl silicone resin with excellent thermal stability and good electrical properties.

Bulk Properties:

  • color: clear-straw transparent
  • dielectric strength (1/8′): 350 volts/mil
  • volume resistivity: 5 x 1015 ohm-cm
  • refractive index: 1.530

Resin Properties:

  • form: liquid
  • viscosity: 80-150 cSt
  • flashpoint: 35 °C
  • specific gravity: 1.10

Shelf life: 12 months when stored below 25 °C in sealed containers.

Cautions: Use in a well ventilated area. Avoid contact with skin and eyes. Part B catalyst is an oxidizer and should be stored away from flammables.

Application Methods:

Gelest HardSil™ CC Part A (resin) and 1 wt % Part B (peroxide) are combined and mixed thoroughly. The mix is poured or applied as an an encapsulant or impregnant. Cure is for 6 hours at 150 °C followed by two hours at 200 °C. If the component is operating above 200 °C, it should be cured for three hours at the maximum operating temperature before entering service.

Gelest® OE 39: 1.39 Refractive Index 2-Part Silicone RTV Elastomer (1:1 kit) PP2-OE39

Description: Gelest® OE 39 is an optically clear cladding, encapsulation and coating compound. Gelest® OE 39 can also be used to fabricate acoustic lenses. The moderate viscosity of the catalyzed mix, long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype and small production run applications.

Cured Properties:

  • refractive index at 25 °C: 1.39
  • tensile strength: 0.05 MPa
  • elongation: 1400-1600%
  • durometer, Shore A: 5
  • specific gravity: 1.03

Uncured Properties:

  • viscosity (1:1) catalyzed: 3000-5000 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 80 °C for 4 hours.

Gelest OE® 41 1.41 refractive index 2-part silicone RTV encapsulant, supplied as 1:1 kit PP2-OE41

Applications:

  • electronic devices – provide mechanical and chemical protection to electronic components, free of abrasive silica
  • optical devices – index matching, cladding, or transmission media applications
  • supported membranes – filler-free silicone allows maximum transport of gases

Description: Gelest OE® 41 is a flexible, optically clear molding, encapsulation and coating compound. The low viscosity of the catalyzed mix, long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype and small production run applications. Provide rapid-cure pure silicone elastomers with high optical transmission. They have relatively low viscosity and extended pot-life, allowing potting, embedding, and coating. Systems are vinyl-addition (platinum) cure.

Cured Properties:

  • refractive index: 1.407
  • tensile strength: > 300 psi
  • elongation: 140-200%
  • durometer, Shore A: 15-30
  • tear strength: 5-15 pli

Uncured Properties:

  • viscosity (1:1) catalyzed: 1750-2500 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest OE® 41 is available in several versions in which cure speed or volatile content has been varied to match special requirements.

Gelest OE® 41.2: Accelerated Cure (PP2-OE41.2)

Rapid cure version of standard Gelest OE® 41, cures in less than 1 hour at room temperature, has a working time of about 10 minutes.

Gelest OE® 41.4: Extended Cure (PP2-OE41.4)

Slow cure version of standard Gelest OE® 41, offers a pot-life of 48 hours at room temperature. Cures in one hour at 120 °C.

Gelest OE® 41.6: Low Volatility (PP2-OE41.6)

Low volatility content of Gelest OE® 41.6 offers advantages in electrical and high vacuum where bleed or migration of low molecular weight species can have deleterious effects.

Gelest OE® 41.7: Low Volatility in solution (PP2-OE41.7)

A single component solution version in toluene which cures after evaporation of solvent in 24 hours to form optically clear films. Product must be stored < 5 °C

Gelest OE® 42 1.42 refractive index 2-part silicone RTV encapsulant, supplied as 1:1 kit PP2-OE42

Applications:

  • electronic devices – provide mechanical and chemical protection to electronic components, free of abrasive silica
  • optical devices – index matching, cladding, or transmission media applications
  • supported membranes – filler-free silicone allows maximum transport of gases

Description: Gelest OE® 42 is a flexible, optically clear molding, encapsulation and coating compound, offering improved adhesion to substrates compared to Gelest OE® 41. The low viscosity of the catalyzed mix, long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype and small production run applications. Provide rapid-cure pure silicone elastomers with high optical transmission. They have relatively low viscosity and extended pot-life, allowing potting, embedding, and coating. Systems are vinyl-addition (platinum) cure.

Cured Properties:

  • refractive index: 1.420
  • tensile strength: > 200 psi
  • elongation: 90-150%
  • durometer, Shore A: 10-25
  • tear strength: 5-10 pli

Uncured Properties:

  • viscosity (1:1) catalyzed: 1500-2000 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest OE® 43 1.43 refractive index 2-part silicone RTV encapsulant, supplied as 1:1 kit PP2-OE43

Applications:

  • electronic devices – provide mechanical and chemical protection to electronic components, free of abrasive silica
  • optical devices – index matching, cladding, or transmission media applications
  • supported membranes – filler-free silicone allows maximum transport of gases

Description: Gelest OE® 43 is a flexible, optically clear molding, encapsulation and coating compound, offering improved adhesion to substrates compared to Gelest OE® 41. The low viscosity of the catalyzed mix, long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype and small production run applications. Provide rapid-cure pure silicone elastomers with high optical transmission. They have relatively low viscosity and extended pot-life, allowing potting, embedding, and coating. Systems are vinyl-addition (platinum) cure.

Cured Properties:

  • refractive index: 1.430
  • tensile strength: > 200 psi
  • elongation: 75-100%
  • durometer, Shore A: 5-15
  • tear strength: 5-10 pli

Uncured Properties:

  • viscosity (1:1) catalyzed: 800-1500 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest® OE 46 1.46 Refractive Index 2-Part Silicone RTV Elastomer (1:1 kit), PP2-OE46

Description: Gelest® OE 46 is a flexible, optically clear molding, encapsulation and coating compound. Refractive index of Gelest® OE 46 matches glass, allowing for fabrication with ‘invisible’ joints. The low viscosity of the catalyzed mix, long pot-life at room temperature, and moderate cure temperature make this extremely useful in laboratory, prototype, and small production run applications. This filler-free material offers the lowest transmission loss of the medium refractive index (1.46) elastomers.

Cured Properties:

  • refractive index: 1.46
  • tensile strength: 0.25 MPa
  • elongation: 30-50%
  • durometer, Shore A: 10-20
  • specific gravity: 1.05

Uncured Properties:

  • viscosity (1:1) catalyzed: 1,500-2,500 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest® OE 46.1 1.46 Refractive Index 2-Part Silicone RTV Elastomer, Medium Strength (1:1 kit), PP2-OE46.1

Description: Gelest® OE 46.1 is a flexible, optically clear molding, encapsulation and coating compound. Refractive index of Gelest® OE 46.1 matches glass, allowing for fabrication with ‘invisible’ joints. The long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype, and small production run applications.

Cured Properties:

  • refractive index: 1.46
  • tensile strength: 0.55 MPa
  • elongation: 65-75%
  • durometer, Shore A: 30-45
  • specific gravity: 1.19

Uncured Properties:

  • viscosity (1:1) catalyzed: 15,000 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest® OE 46.2 1.46 Refractive Index 2-Part Silicone RTV Elastomer, Medium Strength (1:1 kit), PP2-OE46.2

Description: Gelest® OE 46.2 is a flexible, optically clear molding, encapsulation and coating compound. Refractive index of Gelest® OE 46.2 matches glass, allowing for fabrication with ‘invisible’ joints. The long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype, and small production run applications.

Cured Properties:

  • refractive index: 1.46
  • tensile strength: 1-1.5 MPa
  • elongation: 200-250%
  • durometer, Shore A: 45-50
  • specific gravity: 1.22

Uncured Properties:

  • viscosity (1:1) catalyzed: 30,000 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 18 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.

Gelest® OE 50 1.50 Refractive Index 2-Part Silicone RTV Elastomer (1:1 kit), PP2-OE50

Description: Gelest® OE 50 is a flexible, optically clear molding, encapsulation and coating compound. The higher refractive index of Gelest® OE 50 can act as cladding in optical waveguide applications. The low viscosity of the catalyzed mix, long pot-life at room temperature and moderate cure temperature make this extremely useful in laboratory, prototype and small production run applications.

Cured Properties:

  • refractive index: 1.50
  • tensile strength: 0.1 MPa
  • elongation: 75-100%
  • durometer, Shore A: 10-20
  • specific gravity: 1.07

Uncured Properties:

  • viscosity (1:1) catalyzed: 3,000-5,000 cSt

Application Methods:

Thoroughly mix Part A with Part B in a 1:1 ratio. De-air mix under vacuum for about 20 minutes. The pot-life is 12 hours at 25 °C. Pot-life may be extended by storing at 5 °C. Pour into mold or apply to substrate. Avoid entrapping air. Cure at 55 °C for 4 hours or at room temperature over 72 hours.