Silfit Z 91 in powder coatings

Polyester/HAA (Primid)

Calcined product based on Sillitin Z 86.

Silfit Z 91 is applicable in polyester and HAA powder coatings (all colors, except white) 
The product will be used for gloss applications. It offers homogeneous and fine surface, improvement of flexibility (impact) and water spot resistance, slight improvement of weather resistance and better corrosion resistance/reduction of delamination.

 

  • excellent dispersion properties
  • low abrasivity
  • good edge covering
  • scratch resistance
  • abrasion resistance
  • flexibility (Erichsen cupping, impact)
  • good corrosion protection, especially low delamination and rust creep
  • good chemical resistance, especially against hot water
  • improved hiding power or partial replacement of titanium dioxide
Product characteristics Unit SILFIT Z 91
Functionalization untreated
Color values L*
Color values a*
Color values b*
96.5
- 0.2
1.0
Particle size D50
Particle size D97
µm
2.1
9,5
Residue > 40 µm
mg/kg
10
Volatile matter at 105 °C % 0.2
Electrical conductivity µS/cm 20
pH Value 6.5
Density
Bulk density
Tamped density
g/cm³
2.6
0.30
0.55
Spec. Surface area (BET)
Oil absorption
m²/g
g/100 g
10
65
Hardness silica/kaolinite
mg
7/4.5
Refractive index n 1.55
Water solubility
Acid solubility
%
< 0.5
< 1
Chemical Analysis:
SiO2
Al2O3
Fe2O3
%
86
13
< 1
Mineralogical Composition:
Neuburg silica
Calcined kaolinite
%
60
40
Equilibrium moisture content at 25°C
and 50% relative humidity
and 80% relative humidity
and 90% relative humidity
%
0.12
0.22
0.54
Water absorption ml/g not specified

In order to make available to you the most important information about our products at all times, you will find here the Material Specification.

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The aspects to observe when working with our products are detailed in our Material Safety Data Sheet, which also can be downloaded.

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All information about material characteristics, application fields and benefits can be found in this Technical Data Sheet and is also for download available here.

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