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Fumed Silica IOTA HB4139


    Product description

    HB-4139 is hydrophobic fumed silica which is produced by HL-4200 after chemical post-treatment with PMDS (Polydimethylsiloxane).


    Specification

    IOTA  HB4139

    Specific sunface area(BET), /g

    110

    pH value in 4% dispersion

    5.57.5

    Loss on drying(2 hours at 105), %

    ≤1.5

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

    ≤10.0

    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), %

    4.56.5

     

    Applications 

    Silicone rubber                      

    Coatings and printing ink

    Adhesives and Sealants       

    Greases and cable gel

    Unsaturated resin                

    Powders

     

    Properties

    Good thickening and thixotropy property

    Good anti-sagging properties and excellent stability in epoxy resin

    Excellent reinforcing properties in silicone rubber especially at high filler loading levels and no crepe hardening on aging

    Good transparency performance

    Free-flow property for water-proof material and powders

     

    Package

    White kraft paper bag, 10KG/Bag


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