HYDROPHOBIC FUMED SILICA-4
2 year ago
Characteristics
QX-120 is a hydrophobic fumed silica after treated with DDS(Di-methyl based on a hydrophobic fume silica with a specific
surface area of 170 m2/g. It is a kind of high purity white colloidal powder.
Silica matting agents are commonly used in various industries to create a matte appearance in coatings, paints, inks, and
other applications. Hydrophobic fumed silica is a type of silica that has been treated to be water-repellent or hydrophobic.
This hydrophobicity helps to improve the performance of the matting agent in certain applications.
When using hydrophobic fumed silica as a matting agent, it is important to consider the following factors:
1. Particle Size: The particle size of the hydrophobic fumed silica should be chosen based on the desired level of matting effect.
Smaller particle sizes generally provide a higher degree of matting, while larger particles may offer a softer matte appearance.
2. Surface Area: The surface area of the hydrophobic fumed silica affects its matting properties. Higher surface area particles
tend to provide a more pronounced matte effect.
3. Dispersion: Proper dispersion of the hydrophobic fumed silica is crucial for achieving the desired matting effect. It is important
to ensure that the silica is evenly dispersed throughout the coating or paint formulation to avoid agglomeration or settling.
4. Compatibility: Hydrophobic fumed silica should be compatible with the other components of the coating or paint formulation.
It is advisable to conduct compatibility tests to ensure that the matting agent does not negatively interact with other additives or ingredients.
5. Concentration: The concentration of hydrophobic fumed silica in the formulation will also impact the matting effect. Higher concentrations will generally result in a more matte appearance.
6. Application Method: The application method of the coating or paint formulation can also influence the matting effect. Factors
such as film thickness, drying conditions, and curing temperature should be considered.
It is recommended to consult with the supplier of the hydrophobic fumed silica to obtain specific technical data and guidance on
its usage as a matting agent.
Applications
1. HTV Silicone Rubber
2. Adhesive and Sealants
3. Coatings, Inks.
4. Powder Coatings
Properties
1, Reinforcement of HTV Silicone Rubber, Anti-Caking.
2, Hydrophobic surface chemistry and stable thixotropy, anti-settling, anti-sagging.
3, Good Performance of hydrophobic feature and rheology in Adhensives and Sealants.
4, Improve the free flow, homogeneity and probility stability of Carbon Powder.
Physicochemical Data
| Properties | Unit | Typical Value |
| Specific Surface Area(BET) | M2/g |
170±20
|
| PH-Value in 4% Dispersion(1:1 mixture of water and ethanol) |
|
5.5-8.0 |
| Loss on drying(2h@105℃) | Wt% |
≤5.0
|
| Loss on ignition(2h@1000℃,based on material dried for 2h@105℃) | Wt% |
≤4.0
|
Silica content(Based on ignited material)
|
Wt% |
|
| Tamped Density(Based on material dried for 2h@105℃) | g/L | 40-60 |
| Carbon Content(Based on material dried for 2h@105105℃) | Wt% | 1.5-2.5 |
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
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Paint Matting Agent,
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Inkjet Receptive Coating,
Nano Alumina ,
Teflon Heater,
Anticorrosion Pigments