Wacker HDK® V15 Silica

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Wacker HDK® V15 Silica
Categories:	Ceramic; Oxide; Silicon Oxide; Other Engineering Material; Additive/Filler for Polymer
Material Notes:	Synthetic, hydrophilic, amorphous silica, produced via flame hydrolysis. Standard product for industrial applications. Special features: White colloidal powder of high purity. Application: HDK® V15 is applied as a thickening and thixotropic agent in silicone sealants. HDK® V15 is used as a reinforcing filler in elastomers, mainly silicone elastomers. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Bulk Density	0.0500 g/cc	tamped; DIN EN ISO 787-11
Density	2.20 g/cc	DIN 51757
pH	3.8 - 4.3	4% dispersion; DIN EN ISO 787-9
Specific Surface Area	130 - 170 m²/g	Hydrophobic Silica
Evaporation Loss	<= 1.0 % @Temperature 105 °C, Time 7200 sec	DIN EN ISO 787-2

Optical Properties	Original Value	Comments
Refractive Index	1.46

Component Elements Properties	Original Value	Comments
SiO2	>= 99.8 %	based on the substance heated at 1000°C for 2 h; DIN EN ISO 3262-19

Descriptive Properties
Sieve residue	<0.03%	acc to Mocker >40 µm, DIN EN ISO 787-18

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PWACK9358 / 204887

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