HCSIL-203 is hydrophobic fumed silica which is produced by HC-200 after chemical post-treatment with HMDS (Hexamethyldisilazane). 

 

Properties: 

 Rheology & Thixotropy control

  Reinforcement

  Improvement of Free Flow

  Antisagging & Antisettling

  hydrophobic feature

 Free flow aid and anti-caking 

 

Characteristic physico-chemical data 

ITEM	UNIT	VALUE
pH in 4% dispersion		5.5 – 7.5
Drying Loss(2hr. at 105℃)	wt. %	≤ 0.5
Loss on ignition	wt. %	≤ 4.0
SiO2-content	wt. %	≥ 99.8
Bulk Density	g/l	40-60

 

 

 

 

 

 

 

 

 

                                      * Above data is typical value

Application:

   Silicon rubber, Elastomers, SLR                                                 

   Powder Coatings

   Coating and Printing ink, toner

   Adhesives and Sealants

 

Packing and storage

lPackaged in multiple layer Kraft paper, 10kg per bag

lStored in aeration-drying storage areas for protecting the material from volatile substance.

lShould be used within 2 years after production.