Product Overview
Hydrophobic Silica Powder is a surface-treated silica powder with hydrophobic properties. The surface modification improves compatibility with organic systems, reducing moisture uptake and agglomeration. It is used in coatings, adhesives, electronic encapsulants, and composite systems where storage stability and dispersion in organic media are important.
Core Advantages
Hydrophobic surface treatment. In organic resin systems, the treated surface reduces moisture absorption and agglomeration, which supports longer storage stability and more consistent dispersion during mixing.
SiO₂ content ≥99.0%, loss on ignition ≤0.50%. The higher LOI compared with untreated silica reflects the surface treatment. In adhesive and encapsulant systems, this treatment improves compatibility with organic polymers.
Particle size 300–3000 mesh. Covers the fineness range used in silicone rubber, copper clad laminates, and electronic encapsulants.
Moisture ≤0.10%. Low moisture reduces the risk of bubbles and voids during curing in encapsulant and casting applications.
Low thermal expansion coefficient. In composite systems, this helps reduce cure shrinkage and improves dimensional stability of the finished part.
Application Scenarios
• Electronic encapsulants
• Silicone rubber
• Copper clad laminates
• Epoxy casting compounds
• LED packaging materials
• High-performance adhesives
Specifications
|
Item |
Typical Value |
|
Product Name |
Hydrophobic Silica Powder |
|
SiO₂ Content |
≥99.0% |
|
Loss on Ignition |
≤0.50% |
|
Surface Property |
Hydrophobic |
|
Particle Size Range |
300–3000 mesh |
|
Moisture |
≤0.10% |
|
Packaging |
25 kg woven bag / jumbo bag |
|
MOQ |
1 ton |
|
Lead Time |
7–10 days (standard); within 20 days (customized) |
Customization range: degree of hydrophobic treatment, particle size distribution, and packaging can be adjusted.
Customization
Custom orders start at 1 ton; freight is paid by the buyer. Customers may provide a reference sample, and production is arranged after we test and confirm the specification.
Customizable Items
• Degree of hydrophobic treatment
• Particle size distribution
• Packaging form
FAQ
Q: What is the difference between Hydrophobic Silica Powder and standard silica powder?
A: The main difference is the surface treatment. The hydrophobic grade disperses better in organic systems and absorbs less moisture, making it suitable for applications with high requirements for moisture resistance and compatibility.
Q: Can the hydrophobic degree be customized?
A: Yes. Please provide a sample or technical requirement. We test and confirm before arranging production.
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