Feature
Hydrophobic silica dioxide powder is a specialized form of silica dioxide (SiO2) that has been treated to repel water. It is
commonly used in chemical coatings to provide water resistance and improve the performance of the coating.
The hydrophobic properties of the silica dioxide powder are achieved through a surface modification process. This process
involves treating the silica particles with a hydrophobic compound, such as a silane or a silicone-based material. The
hydrophobic compound forms a thin layer on the surface of the silica particles, creating a water-repellent coating.
The hydrophobic silica dioxide powder can be incorporated into various types of chemical coatings, including paints, varnishes,
sealants, and adhesives. When added to these coatings, it helps to improve their water resistance, prevent moisture penetration,
and enhance their durability.
One of the key benefits of using hydrophobic silica dioxide powder in chemical coatings is its ability to create a protective barrier
against water. This can be particularly useful in outdoor applications where the coating is exposed to rain, humidity, or other sources
of moisture. The hydrophobic properties of the powder help to prevent water from penetrating the coating, thereby reducing the risk
of damage, corrosion, or degradation.
In addition to its water-repellent properties, hydrophobic silica dioxide powder can also provide other benefits to chemical coatings.
It can improve the flow and leveling of the coating, enhance its adhesion to substrates, and increase its resistance to abrasion and
scratching.
Overall, hydrophobic silica dioxide powder is a valuable additive for chemical coatings, offering enhanced water resistance and
improved performance. It is widely used in various industries, including automotive, construction, electronics, and marine, where water protection is critical.
Physical and Chemical Data:
Item
| D17
| Heavy metal,mg/kg | ≤0.001 |
Content of sio2(dry basis) %
| 99.3 | Specific Surface Area ,m2/g
| 50-70 |
Bulk Density, g/l
| 130-150 | Particle Size(Malvent D50),um
| 8-10 |
Loss on drying(105℃ ，2Hrs)
| ≤4.0
| Ignition loss(1000℃,2Hrs)
| ≤8.0
|
Salt as Na2SO4, %
| ≤1.0
| PH(5% Liquor)
| 6.5-7.5
|
Application: Used in a wide range of defoamers.
