SemiSIL 380: Hydrophilic Fumed Silica 380
SEMISIL 380 is the highest surface area grade in our hydrophilic portfolio, designed for extreme rheology control. As an ultra-fine hydrophilic fumed silica 380, it provides the most efficient thickening and thixotropic properties available for high-tech industrial applications.
Quick Profile
- Surface Area (BET): 380 ± 30 m²/g
- CAS Number: 112945-52-5
- Key Advantage: Unmatched thickening efficiency, maximum clarity, and nano-abrasive precision.
Applications of Hydrophilic Fumed Silica 380
LSR (Liquid Silicone Rubber)
Provides extreme transparency and high tear strength for SEMISIL 380 in high-precision molded parts.
CMP Slurries
The preferred hydrophilic fumed silica 380 for semiconductor wafer polishing, ensuring a scratch-free, nano-smooth surface.
Gel Electrolytes
Optimizes battery performance by creating a stable gel network with SEMISIL 380 at minimal dosages.
UPR & High-End Coatings
Ensures absolute sag resistance for hydrophilic fumed silica 380 in high-build vertical applications.
Key Functional Properties of Hydrophilic Fumed Silica 380
Maximum Thickening Efficiency
The massive surface area of SEMISIL 380 allows for a highly dense 3D hydrogen-bonding network at low concentrations.
Nano-Scale Abrasive Precision
With primary particles around 7nm, SEMISIL 380 provides ultra-fine mechanical polishing without surface defects.
Ultimate Optical Clarity
Hydrophilic fumed silica 380 ensures the lowest possible haze in transparent polymers due to its exceptional fineness.
Surface Purity & Stability
SiO2 ≥ 99.8%: This premium hydrophilic fumed silica 380 maintains chemical integrity in highly sensitive electronic and medical-grade applications.
Technical Data (TDS)
| Property | Standard Value | Unit | Method |
|---|---|---|---|
| Specific Surface Area | 380 ± 30 | m²/g | GB/T 20020 |
| pH (4% dispersion) | 3.6 ~ 4.5 | - | GB/T 20020 |
| Loss on Drying | ≤ 1.5 | % | GB/T 20020 |
| SiO₂ Content | ≥ 99.8 | % | GB/T 20020 |
Packaging & Logistics
Non-DG Compliance: Fully safe for Railway, Sea (Shipping), and Truck transportation.
20'FCL Loading
• 160kg / pallet (16 bags)
• 10 pallets / 1600kg total
• 10 pallets / 1600kg total
40'HQ Loading
• 200kg / pallet (20 bags)
• 20 pallets / 4000kg total
• 20 pallets / 4000kg total
Common Questions about Hydrophilic Fumed Silica 380
Is SemiSIL 380 a direct technical equivalent to Aerosil® 380 or HDK® T40?
Yes. SemiSIL 380 is a 1:1 technical replacement for high-surface-area hydrophilic grades. It provides the identical nano-scale reinforcement and thixotropic efficiency expected from hydrophilic fumed silica 380, ensuring a seamless transition for LSR and CMP slurry manufacturers.
How does the thickening efficiency of 380 grade compare to the 200 grade?
Hydrophilic fumed silica 380 offers significantly higher thickening efficiency due to its massive surface area. You can achieve the same thixotropic index as the 200 grade while using 20% to 30% less material, making hydrophilic fumed silica 380 the superior choice for high-transparency systems.
What is the best way to disperse SemiSIL 380 to ensure zero haze?
To achieve 100% optical clarity, hydrophilic fumed silica 380 requires intense high-shear dispersion. We recommend using a rotor-stator mixer or a three-roll mill. Proper dispersion breaks down all micro-agglomerates, allowing the hydrophilic fumed silica 380 to form a perfectly transparent 3D network.
Why is moisture control critical for Hydrophilic Fumed Silica 380?
Because of its extremely high surface area, hydrophilic fumed silica 380 is highly hygroscopic. Absorbed moisture can interfere with hydrogen bonding and reduce the thickening effect. Always store hydrophilic fumed silica 380 in a dry, sealed warehouse and use it promptly after opening the multi-layer kraft bags.
Factory-Direct fumed silica 380
Get technical-grade samples directly from our Anhui R&D center with 48h dispatch.
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