Physical and Chemical Properties
|
Properties and Test Methods
|
Unites
|
Value
|
|
SiO2Content
ISO3262-19
|
%
|
≥ 99.8
|
|
Specific Surface area (N2) –Tristar, multi-point
ISO9277
|
m2/g
|
170
|
|
Loss on Drying，
2h at 105ºC
ISO787-2
|
%
|
≤ 0.7
|
|
Ignition Loss,
2h at 1000ºC
ISO 3262-1
|
%
|
≤ 2.5
|
|
pH Value
4% in dispersion
|
|
4.1
|
|
Tamped Density
ISO 787-11
|
g/l
|
50
|
|
Carbon content
Internal method
|
%
|
1.0
|
|
Package
|
kg
|
10
|
Silphobic A74 is hydrophobic fumed silica with a specific surface area of 170 m2/g
Applications
Ø Silicone rubber and silicone sealants
Ø Paints and coatings
Ø Printing inks and toner
Ø Adhesives
Ø Cable compounds and gels
Ø Plant protection
Properties
Ø Hydrophobic component for thickening and reinforcement of RTV-1 K silicone sealants.
Ø Improves shelf-life of silicone sealants.
Ø Water resistant, hydrophobising of liquid systems.
Ø Rheology control of (complex) liquid systems.
Ø For use in coatings as anti-settling agent, for pigment stablilization and improvement of corrosion protection.
Ø Improves hydrophobicity and rheology of offset printing inks.
Ø Improvement and maintenance of free flow and anti- caking characteristics of powders.
