| CAS No.: | 7631-86-9 |
|---|---|
| Appearance: | Powder |
| Usage: | Oil Drilling Auxiliary Agent, Water Treatment Chemicals, Rubber Auxiliary Agents, Plastic Auxiliary Agents, Coating Auxiliary Agents, Textile Auxiliary Agents, Paper Chemicals, Surfactants, Leather Auxiliary Agents, Electronics Chemicals |
|
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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), m2/g |
110 |
|
pH value in 4% dispersion |
5.5~7.5 |
|
Loss on drying(2 hours at 105ºC), % |
≤1.5 |
|
Loss on ignition(2 hours at 1000ºC based on material dried for 2 hours at 105ºC), % |
≤10.0 |
|
Sieve Residue(45μm), mg/kg |
- |
|
Silica Content(Based on ignited material), % |
≥99.8 |
|
Tamped Density(Based on material dried at 105ºC for 2 hours), g/dm² |
40~60 |
|
Carbon Content (Based on material dried at 105ºC for 2 hours), % |
4.5~6.5 |
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
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), m2/g |
110 |
|
pH value in 4% dispersion |
5.5~7.5 |
|
Loss on drying(2 hours at 105ºC), % |
≤1.5 |
|
Loss on ignition(2 hours at 1000ºC based on material dried for 2 hours at 105ºC), % |
≤10.0 |
|
Sieve Residue(45μm), mg/kg |
- |
|
Silica Content(Based on ignited material), % |
≥99.8 |
|
Tamped Density(Based on material dried at 105ºC for 2 hours), g/dm² |
40~60 |
|
Carbon Content (Based on material dried at 105ºC for 2 hours), % |
4.5~6.5 |
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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