Hydrophilic Fumed Silica Powder as Nano Silicon Dioxide Used For Coatings
Specification
HL-200 Hydrophilic fumed silica powder is a synthetic amorphous, Nano silicon dioxide with BET surface area of 200 m2/g. It is a kind of high purity white colloidal powder.
With its unique features of particle size, high purity, aggregated structure and low bulk density, it is widely used in fine chemical such as Silicone Sealant and Rubber, Paints and
Unsaturated Polyester etc.
Physical and Chemical Data
| Property | Unit | Typical Value | Testing Method |
| Specific surface area(BET) | M2/g | 200±20 | GB/T20020 |
| PH Value in 4% dispersion | | 3.7-4.5 | GB/T20020 |
| Loss on dying(2h@105C) | Wt% | ≤2.0 | GB/T20020 |
| Loss on ignition(2h@1000C,based on material dried for 2h@105C) | Wt% | ≤2.0 | GB/T20020 |
| Sieve residue(45um) | Wt% | ≤0.04 | GB/T20020 |
| Silica content(Based on ignited material) | Wt% | ≥99.8 | GB/T20020 |
| Tamped density(Based on material dried for 2h@105C) | g/L | 40-60 | GB/T20020 |
| Carbon content(Based on material dried for 2h@105C) | g/L | ≤0.15 | GB/T20020 |
Properties
1, Reinforcing filler in elastomers.
2, Rheology and thixotropy control of liquid systems, binders, polymers,etc.
3, Used as anti-setting, thickening, anti-sagging agent.
4, Improvement of free flow and anti-caking characteristics of powders.
5, High r transparency
Applications
1, Paints and Coatings
2, Unsaturated polyester resins and films
3, Elastomers, especially HTV and RTV Silicone rubber
4, Adhesives and Sealants
5, Printing Inks
6, Plant Protection
7, Cosmetics
