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Hydrophobic fumed silica-BQS151

  • Silica Siwin-BQS151
  • Siwin
  • Silica Siwin-BQS151
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Silica Siwin-BQS151

Hydrophobic fumed silica


Characteristics

BQS151 is a hydrophobic type of silica treated by DDS (dimethyldichlosilane) with a specific surface area of 150 ㎡/g. It is a high purity white powder


Applications

RTV silicone rubber, especially RTV-T.

Adhesives & Sealants.

Coatings, Printing ink.

Powder Coating.


Properties

Anti-setting, anti-sagging and thixotropy control.

Anti-settling and anti-sagging agent.

Rheology control in adhesives.

Free flow aid and anti-caking aid for powders.

Thixotropy and reinforcement in RTV silicone sealants, the hydrophobic feature gives RTV silicone sealants a long shelf-life


Physical & Chemical Data

Properties

Unit

Standard Value

Testing Method

PH in 4% dispersion (H2O: Ethanol=1:1)


3.7-4.5

GB/T 20020

Loss on drying (2 hour at 105℃)

%

≤0.7

GB/T 20020

Loss on ignition

(2 hour at 1000°based on material

dried for 2 hours at 105℃)

%

≤2.5

GB/T 20020

Silica content (based on ignited material)

%

≥99.8

GB/T 20020


Tamped density

(based on material dried for 2 hours at 105℃)

g/dm2

40-60

GB/T 20020

Carbon content

(based on material dried for 2 hours at 105℃)

%

0.6-1.2

GB/T 20020


Packing

10kg/bag kraft paper.

12 month shelf life.







                                                         





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