Thin Films for Dielectric, Mechanical, and Optical Properties

Seramic™ SI Silicon Dioxide Precursor PP1-SESI

Applications:

• electronics – provides dielectric layers for capacitors and other critical insulation applications
• optics – provides overcoats for glass and quartz for index matching applications and as diffusion barriers

Description: Seramic™ SI is a β-chloroethylsilsesquioxane solution in methoxypropanol. Provides thermally resistant dielectric coatings by dip or spin-on application.

Film Properties:

• color: clear
• dielectric constant: 3.2-3.6
• refractive index: uncured films: 1.51, cured films: 2.1-2.2

Solution Properties of Seramic™ SI:

• form: solution
• solids: 14-16%
• density: 0.96 g/cc
• viscosity: 3-5 cSt
• flashpoint: 35 °C

Shelf life: Six months when stored below 5 °C in sealed containers. Containers should be warmed to 15 °C before opening to reduce condensation of water.

Cautions: Use in a well ventilated area. Flammable. Avoid contact with skin and eyes.

Application Methods:

• Thermal – Gelest Seramic™ SI is applied as a coating by dipping or spin-on. After solvent evaporation, the system cures in 30-60 minutes at 300 °C. As supplied, typical film deposition is 1500-2000 Å by spin-on application. Thinner films may be prepared by diluting with methoxypropanol or diglyme. The cure process liberates small amounts of ethylene and hydrogen chloride.
• UV – Gelest Seramic™ SI is converted to silicon dioxide on exposure to deep UV (< 210 nm). Exposed areas are insoluble, while unexposed areas may be removed by a solvent wash.

Seramic™ BST Barium Strontium Titanate Precursor PP1-SEBS

Applications:

• electronics – provides high dielectric constant layers for capacitors and electroluminescent applications
• optics – provide overcoats for glass and quartz for index matching applications and as diffusion barriers

Description: Seramic™ BST is mixed barium strontium and titanium double metal alkoxides in a solution of higher alcohols. Cure is two-stage, moisture followed by thermal. Provide thermally resistant dielectric coatings by dip or spin-on application.

Film Properties:

• color: clear
• metal atom ratio: 0.5:0.5:1.0 Ba:Sr:Ti
• refractive index: 1.8-1.9

Solution Properties of Seramic™ BST:

• form: amber solution
• solids: 36-40%
• flashpoint: 39 °C
• density: 1.00g/cc
• grams of BaSr_0.5Ti_0.5O₃ per 100 grams solution: 11.0-12.0

Shelf life: Six months when stored below 5 °C in sealed containers. Containers should be warmed to 15 °C before opening to reduce condensation of water.

Cautions: Use in a well ventilated area. Flammable. Avoid contact with skin and eyes.

Application Methods

Gelest Seramic™ BST is applied as a coating by dipping or spin-on. After solvent evaporation at 40-60% RH, the system cures in 15 minutes at 650 °C. As supplied, typical film deposition is 1200-1500 Å by spin-on application at 3000 rpm. Thinner films may prepared by diluting with methoxypropanol or diglyme.

HardSil™ AM Abrasion Resistant Coating – Thermal Cure PP1-HSAM

Applications:

• optical thermoplastics – provides effective scratch-resistant coatings with good weather resistance for polycarbonates and polyacrylates. Examples include glazing, windscreen, computer screen, and ophthalmic applications
• laminated structures – hard, heat resistant impregnants for continuous exposures up to 360 °C

Description: HardSil™ AM is a primerless acrylated silicone nanocomposite dispersed in a mixture of alcohols including methanol, n-butanol and isopropanol. The nanocomposite structure imparts scratch resistance to a clear film structure. Provides clear silicone hard coat with excellent optical properties. HardSil™ AM series are curable polysilsesquioxane T-resins with excellent abrasion resistance.

Film Properties:

• color: clear
• abrasion resistance, Taber 500 cycles 500g CS10F: 5

Solution Properties of HardSil™ AM:

• form: solution
• solids: 19-21%
• flashpoint: 19 °C
• specific gravity: 0.91
• viscosity: 5-15 cSt

Shelf life: Three months when stored below 5 °C in sealed containers. Containers should be warmed to 15 °C before opening to reduce condensation of water.

Cautions: Use in a well ventilated area. Flammable. Avoid contact with skin and eyes.

Application Methods

Gelest HardSil™ AM is applied as a coating by spraying, dipping or brushing. After solvent evaporation, the system cures in 30-60 minutes at 125-140 °C. As supplied, typical film deposition is 6-8 microns. Thinner films may be prepared by diluting with methoxypropanol or isopropanol.

HardSil™ AP Abrasion Resistant Coating – Thermal Cure PP1-HSAP

Applications:

• optical thermoplastics – provides effective scratch-resistant coatings with good weather resistance for polycarbonates and polyacrylates. Examples include glazing, windscreen, computer screen, and ophthalmic applications.
• laminated structures – hard, heat resistant impregnants for continuous exposures up to 360 °C

Description: HardSil™ AP is a primerless phenyl modified silicone dispersed in methoxypropanol for continuous use at temperatures up to 360 °C. Provides clear silicone hard coat with excellent optical properties. HardSil™ AP series are curable polysilsesquioxane T-resins with excellent abrasion resistance.

Film Properties:

• color: clear
• hardness, Rockwell R: 120 R
• tensile strength: 3500 psi
• refractive index: 1.54-1.56

Solution Properties of HardSil™ AP:

• form: liquid
• solids: 20%
• flashpoint: 35 °C
• specific gravity: 0.95
• viscosity: 3-5 cSt

Shelf life: 12 months when stored below 25 °C in sealed containers. Keep container sealed after dispensing product.

Cautions: Use in a well ventilated area. Flammable. Avoid contact with skin and eyes.

Application Methods

Gelest HardSil™ AP is applied as a coating by spraying, dipping or brushing. Material is allowed to dry for 1 hour and then cured at 240 °C for 20-30 minutes. Thinner films may be prepared by diluting with methoxypropanol. Cure can be accelerated by adding 0.5% zinc 2-ethylhexanoate.

HardSil™ AR High Temperature Electrical Coating – Thermal Cure PP1-HSAR

Applications:

• optical components – provides effective scratch-resistant coatings with good adhesion to glass. High refractive index provides a step-index cladding.
• electrical components – hard, heat resistant coating for thermal cycling from room temperature to 290 °C. Examples include resistor and capacitor coatings.

Description: HardSil™ AR is a primerless modified phenyl silicone resin for continuous use at temperatures up to 325 °C, dispersed in methoxypropanol. A clear silicone hard coat with excellent thermal and optical properties that provides a mechanical and oxidation barrier. HardSil™ AR is a curable polysilsesquioxane T-resin modified to provide sufficient flexibility to withstand thermal cycling associated with power-up of electrical and optical circuit components.

Film Properties:

• color: clear
• hardness, Rockwell R: 110 R
• refractive index: 1.56-1.58
• volume resistivity: 1 x 10¹³ ohm-cm

Solution Properties of HardSil™ AR:

• form: liquid
• solids: 20%
• flashpoint: 35 °C
• specific gravity: 0.92
• viscosity: 3-5 cSt

Shelf life: 12 months when stored below 25 °C in sealed containers. Keep container sealed after dispensing product.

Cautions: Use in a well ventilated area. Flammable. Avoid contact with skin and eyes.

Application Methods

Gelest HardSil™ AR is applied as a coating by spraying, dipping or brushing. Material is allowed to dry for 1 hour and then cured at 220 °C for 20-25 minutes. Thinner films may be prepared by diluting with methoxypropanol. Cure can be accelerated by adding 0.5% zinc 2-ethylhexanoate, although this will reduce volume resistivity.