Silfit Z 91 in moisture-curing adhesives

STP-E / STP-U

Calcined product based on Sillitin Z 86.

Silfit Z 91 is applicable in STP-E and STP-U adhesives.
The product offers highest brightness and color neutrality, lower moisture content, lower viscosity, higher tensile and lap shear strength. Silfit Z 91 is our standard product for high-strength adhesives.

excellent strength of properties, up to 2-fold or 3-fold calcium carbonate (tensile strength and lap shear strength), mostly without reducing the ultimate elongation

good water resistance and chemical resistance

Product characteristics	Unit	Testing method	SILFIT Z 91
Functionalization			untreated
Color values L* Color values a* Color values b*		acc. to CIELAB	96.5 - 0.1 1.0
Particle size D₅₀ Particle size D₉₇	µm	acc. to ISO 13320-1	2.0 10,0
Residue > 40 µm	mg/kg	acc. to DIN EN ISO 787 part 18	10
Volatile matter at 105 °C	%	acc. to DIN EN ISO 787 part 2	0.2
Electrical conductivity	µS/cm	acc. to DIN EN ISO 787 part 14	20
pH Value		acc. to DIN EN ISO 787 part 9	6.5
Density Bulk density Tamped density	g/cm³	acc. to DIN EN ISO 787 part 10 acc. to DIN ISO 903-1976 acc. to DIN EN ISO 787 part 11	2.6 0.33 0.55
Spec. Surface area (BET) Oil absorption	m²/g g/100 g	acc. to DIN ISO 9277 acc. to DIN EN ISO 787 part 5	10 65
Hardness silica/kaolinite	mg	acc. to Mohs	7/4.5
Refractive index n		sin α / sin β	1.55
Water solubility Acid solubility	%	acc. to DIN EN ISO 787 part 3 acc. to DIN 53770 (0,1 N HCL)	< 0.5 < 1
Chemical Analysis: SiO₂ Al₂O₃ Fe₂O₃	%	acc. to DIN 51001 (RFA)	86 13 < 1
Mineralogical Composition: Neuburg silica Calcined kaolinite	%	Based on X-ray diffraction pattern analysis combined with Rietveld	60 40
Equilibrium moisture content at 25°C and 50% relative humidity and 80% relative humidity and 90% relative humidity	%	acc. to DIN 66138	0.12 0.22 0.54
Water absorption	ml/g	acc. to Baumann	not specified

Adhesive based on MS Polymer, high strength, 75 Shore A (V44428.1)

Economic parquet adhesive, meets the requirements of DIN EN 14293 for "soft" adhesives, 45 Shore A (V44303.2b)

Adhesive based on silane-terminated polyether, maximum strength, 80 Shore A (V44303.2c)

1K-STP-U adhesive, high strength, 50 Shore D (V44426.1)

Adhesive based on silane-terminated polyether, high strength, e. g. parquet adhesive meeting the requirements of DIN EN 142293 for "hard" and "soft" adhesives, 60 Shore A (V44303.2a)

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Material Specification

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

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

STP-E / STP-U
1K PUR

Name	Short Description
SILLITIN V 85	Standard product, balanced profile of properties.
SILLITIN Z 86 puriss	Same as Sillitin V 85, but with higher viscosity and higher tensile and lap shear strength.
AKTIFIT AM	Same as Silfit Z 91, enables lower concentrations of amino silane.
AKTIFIT VM	Same as Silfit Z 91, but with very low moisture content without increase under humid climatic conditions, very high tensile, lap shear strength.
AKTIFIT PF 111	Same as Aktifit VM, but with high rheological activity with high tensile and lap shear strength, highest tear resistant in STP-U.
AKTIFIT PF 115	Same as Aktifit VM, but with highest lap shear strength in STP-U.

Name	Short Description
AKTIFIT VM	Hydrophobic, very low moisture content, low rheological activity, high tensile and lap shear strength.
AKTIFIT PF 111	As Aktifit VM, but with high rheological activity.
AKTIFIT PF 115	As Aktifit VM, according to polarity of the PU moderate rheological activity.

Silfit Z 91 in moisture-curing adhesives

STP-E / STP-U

Material Specification

Safety Data Sheet

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