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Wacker HDK fumed silica




Including hydrophilic and hydrophobic type class of aerosil, according to other forms of packaging and transportation systems to customers. Wacker's comprehensive production system, statistical process control (SPC) and efficient reactor power control can ensure that our fumed silica products have very high purity, helping customers improve production processes and improve the quality of final products.


Performance and application:


HDK in battery, composite material (synthetic resin), printing ink, pigment, filling mortar, developer, feed, insulation, adhesives, coatings, gel food, natural and synthetic rubber, PVC, bulk materials, silicone elastomer, toner, and paper coating and impregnation of the fabric and pharmaceutical applications to optimization the effect of process and products.


V15

N20

T40

H15

H20

H17

H18

H2000

The specific surface area/g

150±20

200±30

400±30

150±20

200±30

150±30

200±30

200±30

PH

3.8 - 4.3

3.8 - 4.3

3.6 - 4.3

3.8 - 4.8

3.8 - 4.8

3.8 5.5

3.8 5.5

6.5 8.0

Filling density g/l

50

40

40

50

50

50

50

200

The loss of drying wt%

<1.0

<1.5

<1.5

<0.6

<0.6

<0.6

<0.6

<0.6

The sifting substances wt%

<0.03

<0.04

<0.04

<0.05

<0.05

<0.05

<1.1

n.a.


Dispersion performance of HDK's

Different models determine their different dispersivity

Low shear dispersion is not sufficient for all HDK models. Especially when the motor of the dispersing instrument and the stirring blade circumferential speed (i.e. line speed) when it is too low (e.g., less than 6m/s), the result is the final product fineness, settlement, and low efficiency and poor storage stability.

The turntable disperser (dissolving device) has high shear dispersion speed. It is recommended that the turntable with double-layer saw tooth gear is perpendicular to the cylindrical container. The line speed should be high enough to maintain line speed at 10-20m/s..

- for high specific surface area of HDK's, it is suggested that sand mill and three roll machine be used to disperse HDK's

Similar products comparison table:


WACKER

DEGUSSA

TOKUYAMA

CARBOT

Specific surface area

H15

Ae R972

DM-10

TS610

150

H20

Ae R974

200

H17/H18

Ae R202

TS-720

200

H30RM

Ae R812

TS-530

300

H2000

Ae R8200

200



                       

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