Aktifit VM

Aktifit is an activated Silfit Z 91 produced by modifying the surface with special functional groups. The by-products split off during the treatment reaction are largely removed during the production process which firmly attaches the functional groups to the filler surface. This helps minimize undesirable side effects, as they are potentially encountered with in-situ mixing (direct addition of additives to the compound).

Product characteristics	Value	Unit	Testing method
Functionalization	vinyl
Color values L* Color values a* Color values b*	96.3 -0.1 1.0		according to CIELAB
Color wetted	Extra white
Particle size D₅₀ Particle size D₉₇	2.3 11.0	µm	based on ISO 13320
Residue > 40 µm	10	mg/kg	based on DIN EN ISO 787 Teil 18
Volatile matter at	0.1	%	based on DIN EN ISO 787 Teil 2
Electrical conductivity	not applicable	µS/cm	based on DIN EN ISO 787 Teil 14
pH Value	not applicable		based on DIN EN ISO 787 Teil 9
Density Bulk density Tamped density	2.6 0.37 0.70	g/cm³	based on DIN EN ISO 787 Teil 10 based on DIN ISO 903-1976 based on DIN EN ISO 787 Teil 11
Spec. Surface area (BET) Oil absorption	10 65	m²/g g/100 g	based on DIN ISO 9277 based on DIN EN ISO 787 Teil 5
Hardness silica/kaolinite	7/4.5	mg	based on Mohs
Refractive index n	1.55		sin α / sin β
Water solubility Acid solubility	not applicable not applicable	%	based on DIN EN ISO 787 Teil 3 based on DIN 53770 (0,1 N HCL)
Chemical Analysis SiO₂ Al₂O₃ Fe₂O₃	86 13 < 1	%	based on DIN 51001 (RFA)
Mineralogical Composition Neuburg silica Calcined kaolinite	60 40	%	based on X-ray diffraction pattern analysis combined with Rietveld
Equilibrium moisture content at 25°C and 50% relative humidity and 80% relative humidity and 90% relative humidity	0.05 0.07 0.08	%	based on DIN 66138
Water absorption	≤ 0.1	ml/g	based on Baumann
hydrophobic	✓
reactive	✓

Product characteristics

Value

Unit

Testing method

Functionalization

vinyl

Color values L*
Color values a*
Color values b*

96.3
-0.1
1.0

according to CIELAB

Color wetted

Extra white

Particle size D₅₀
Particle size D₉₇

2.3
11.0

µm

based on ISO 13320

Residue > 40 µm

mg/kg

based on DIN EN ISO 787 Teil 18

Volatile matter at

0.1

based on DIN EN ISO 787 Teil 2

Electrical conductivity

not applicable

µS/cm

based on DIN EN ISO 787 Teil 14

pH Value

not applicable

based on DIN EN ISO 787 Teil 9

Density
Bulk density
Tamped density

2.6
0.37
0.70

g/cm³

based on DIN EN ISO 787 Teil 10
based on DIN ISO 903-1976
based on DIN EN ISO 787 Teil 11

Spec. Surface area (BET)
Oil absorption

10
65

m²/g
g/100 g

based on DIN ISO 9277
based on DIN EN ISO 787 Teil 5

Hardness silica/kaolinite

7/4.5

based on Mohs

Refractive index n

1.55

sin α / sin β

Water solubility
Acid solubility

not applicable
not applicable

based on DIN EN ISO 787 Teil 3
based on DIN 53770 (0,1 N HCL)

Chemical Analysis
SiO₂
Al₂O₃
Fe₂O₃

86
13
< 1

based on DIN 51001 (RFA)

Mineralogical Composition
Neuburg silica
Calcined kaolinite

60
40

based on X-ray diffraction pattern analysis combined with Rietveld

Equilibrium moisture content at 25°C
and 50% relative humidity
and 80% relative humidity
and 90% relative humidity

0.05
0.07
0.08

based on DIN 66138

Water absorption

≤ 0.1

ml/g

based on Baumann

hydrophobic

✓

reactive

✓

Variant	Weight
Paper bag	25 kg
EVA bag
Big bag type 1	≤ 550 kg
Big bag type 2	≤ 900 kg

Paper bag

25 kg

EVA bag

Big bag type 1

≤ 550 kg

Big bag type 2

≤ 900 kg

Document	Download
Material Specification
Aktifit VM	PDF
Safety Data Sheet
Aktifit - English (GB)	PDF
Technical Data Sheet
Elastomers - Aktifit VM	PDF
Paints and varnishes - Aktifit VM	PDF
Thermoplastics - Aktifit VM	PDF

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