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Fumed Silica IOTA HB4620


    Product description

    HB4620 is hydrophobic fumed silica which is produced by HL4200 after chemical post-treatment with HMDS (Hexamethyldisilazane).


    Specification

    IOTA HB4620

    Specific sunface area(BET), /g

    170

    pH value in 4% dispersion

    5.58.0

    Loss on drying(2 hours at 105), %

    ≤0.5

    Loss on ignition(2 hours at 1000 based on material dried for 2 hours at 105), %

    ≤4.0

    Sieve Residue(45μm), mg/kg

    -

    Silica Content(Based on ignited material), %

    ≥99.8

    Tamped Density(Based on material dried at 105 for 2 hours), g/dm²

    4060

    Carbon Content (Based on material dried at 105 for 2 hours), %

    1.52.5

     

    Applications 

    HTV silicone rubber & LSR

    Coatings & printing ink

    Adhesives & Sealants

    Powder Coatings

     

    Properties

    Reinforcing filler for elastomer

    High hydrophobicity and stable thixotropy  

    Anti-settling, anti-sagging agent in coatings and printing ink  

    Free flow aid and anti-caking aid for powders

    Rheological control for adhesives and sealants 

     

    Package

    White kraft paper bag, 10KG/Bag


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