01
Maintaining resin transparency
Adding SANSIL™ FA, which has a refractive index matched to the resin, helps maintain optical transparency.
Silica-Titania composite oxide SANSIL™ FA
About About Silica-Titania composite oxide
02
Improved Mechanical Strength and Lower CTE
Adding filler enables enhanced mechanical properties and a reduction of the Coefficient of Thermal Expansion (CTE), while maintaining high transparency.
03
Anti-blocking
SANSIL™ FA generates micro-scale surface roughness in films, helping to prevent blocking while maintaining high transparency.
Overview
SANSIL™ FA is a silica-titania composite oxide, which can control its refractive index.
By adjusting the ratio between silica and titania, the refractive index of SANSIL™ FA can be controlled from 1.46 to 1.60.
Produced by sol-gel method, SANSIL™ FA is spherical particle with narrow size distribution and its paticle size can be controlled from 0.3 to 0.7 μm.
Structural Image
Basic Physical Properties
SANSIL™ FA Series
- Product Name
- SANSIL™ FA Series
- Specific surface area
- 10㎡/g, 5㎡/g
- Particle size
- 0.3μm, 0.7μm
- Refractive Index
- 1.46-1.60
This data represents typical values and is not guaranteed.
Interval frequency
Frequency [vol.%]
Particle size [μm]
Cumulative frequency
Frequency [vol.%]
Particle size [μm]
Point
Effect of refractive index-matching (slurry)
SANSIL™ FA helps maintain resin transparency by matching its refractive index.
Appearance and transmittance of SANSIL™ FA dispersion solvent (1.5 wt.%)
When dispersed in a solvent with a refractive index of 1.51, conventional silica or particles with a refractive index of 1.60 appear cloudy. In contrast, particles with a matched refractive index maintain transparency and achieve over 95% light transmittance.
Effect of refractive index-matching (epoxy resin)
Adding SANSIL™ FA having the same refractive as regin, resin can be improved mechanical strength and get anti-blocking, while maintaining its transparency.
Visual comparison of cured epoxy resin (2 mm thick) containing added particles
Resin only
- Epoxy resin
- Refractive index: 1.54
Addition of silica
- Particle size: 300 nm
- Particle refractive index: 1.46
- Content: 15 wt.%
Addition of Silica-Titania composite oxide
- Particle size: 300 nm
- Particle refractive index: 1.54
- Content: 15 wt.%
Applications
Adhesives
Insulation enhancement, Mechanical strength improvement, CTE* reduction, Viscosity adjustment
*CTE (Coefficient of Thermal Expansion)
Sealants
Insulation enhancement, Mechanical strength improvement, CTE* reduction, Viscosity adjustment
*CTE (Coefficient of Thermal Expansion)
Films
Anti-blocking performance, Slip property improvement, Heat resistance, Adhesion enhancement
Coating materials
Insulation enhancement, Mechanical strength improvement, CTE* reduction, Viscosity adjustment
*CTE (Coefficient of Thermal Expansion)
* The values and images are examples based on our tests and do not guarantee quality.