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Fumed Silica, Nanometer Silica
The fumed silica has small size, large surface area, many of surface silicon alcohol based (Si-OH) , and body three-dimensional branch structure, through the hydrogen bonding or van der Waals force makes silica and polymer molecules and silica between the molecules which generate strong function, achieve reinforcing effect.
It has chemical inert and special thixotropic performance obviously improved rubber products tensile strength, tensile resistance and wear resistance, rubber increase strength several times after modified. Liquid system, adhesives, such as polymer rheology and thixotropy control, used as the sink, thickening, flow-linked fertilizer, HCR and RTV -2 K silicone rubber reinforcement, can be used to adjust the free flow and as an anticaking agent to improve powder properties and so on.
The technique index are described below:
XH-150
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MODEL
ITEM |
XH-105 |
Inspection Methods
|
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Specific surface area (BET)(㎡/g) |
150±25 |
GB/T10722 |
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Suspension PH value (4%) |
3.7～4.5 |
GB/T1717 |
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Loss on dying (dried at 105 ℃ for 2 hours) |
≤1.5 |
GB/T5211.3 |
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Loss on ignition (dried at 1000 ℃ for 2 hours , on dry basis) |
≤2.0 |
GB/T20020 |
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Screen tailings (45um)(m/m%) |
≤0.04 |
GB/T5211.14 |
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Filling density (on dry basis) (g/L) |
40～60 |
GB/T5211.14 |
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Assay % as SiO2 (on ignition basis) (m/m%) |
≥99.8 |
GB/T20020 |
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Assay % as C (on dry basis) (m/m%) |
≤0.15 |
GB/T20020 |
XH-200
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MODEL
ITEM |
XH-105 |
Inspection Methods
|
|
Specific surface area (BET)(㎡/g) |
200±25 |
Q/(GZ)GBS0
1-2002 |
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Suspension PH value (4%) |
3.6～4.5 |
ISO787-9 |
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Loss on dying (dried at 105 ℃ for 2 hours) |
≤1.5 |
ISO787-2 |
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Loss on ignition (dried at 1000 ℃ for 2 hours , on dry basis) |
≤2.5 |
ISO3262-1 |
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Screen tailings (45um)(m/m%) |
≤0.05 |
ISO787-18 |
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Apparent density (g/L) |
25～60 |
ISO787-11 |
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Assay % as SiO2 (on ignition basis) (m/m%) |
≥99.9 |
ISO3262-20 |
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Assay % as C (on dry basis) (m/m%) |
≤0.2 |
ISO3262-20 |
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Assay % as FeO2 (on dry basis) (m/m%) |
≤0.003 |
ISO3262-20 |
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Assay % as AlO2 (on dry basis) (m/m%) |
≤0.05 |
ISO3262-20 |
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Assay % as TiO2 (on dry basis) (m/m%) |
≤0.03 |
ISO3262-20 |
Nanometer-Silica XH-201
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MODEL
ITEM |
XH-201 |
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Mesh |
2000-2500 |
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Appearance |
White powder |
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Specific surface area (㎡/g) |
205-220 |
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Assay % as SiO2 (on dry basis) (m/m%) |
≥98.0 |
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Loss on dying (dried at 105 ℃ for 2 hours) |
5.0-6.0 |
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Loss on ignition (dried at 1000 ℃ for 2 hours , on dry basis) |
4.2-4.8 |
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DBP Oil Absorption |
2.30-2.70 |
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PH value 10% suspending solution |
6.6-7.1 |
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Average particle size |
4-11 |
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Screen tailings (45um)(m/m%) |
≤0.05 |
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Total Fe % |
≤0.025 |
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Total Cu % |
≤0.003 |
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Total Mn % |
≤0.005 |
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Al2O3 |
≤0.020 |
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MgO (%) |
≤0.010 |
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Na2SO4 |
≤0.5 |
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CaO (%) |
≤0.010 |
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Whiteness % |
≥98 |
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