How to Measure the Hydrophobicity of Hydrophobic Fumed Silica
Here are three hydrophobic fumed silica products:
which have been modified by different treating agents, They are all hydrophobic products. How do we compare their degree of hydrophobicity?
Contact angle helps us
Their contact angle results rank
Contact Angles of Different Grades of Hydrophobic Fumed Silica
| Grades | First Result | Second Result | Third Result | Average Value |
|---|---|---|---|---|
| HIFULL HB-139 | 126.6° | 125.3° | 127.5° | 126.5° |
| HIFULL HB-132 | 122.1° | 121.6° | 123.1° | 122.3° |
| HIFULL HB-151 | 120.3° | 121.1° | 120.9° | 120.7° |
This means HIFULL HB-139 obtains the best hydrophobicity among these three products
Related Products
HIFULL® HL-50 (BET=50㎡/g)
HIFULL® HL-30 (BET=30㎡/g)
HIFULL® HL-380(Pharma Grade)
HIFULL® HL-300(Pharma Grade)
HIFULL® HL-200(Pharma Grade)
HIFULL® HL-450 (BET=450㎡/g)
HIFULL® HL-260 (BET=260㎡/g)
HIFULL® HL-90 (BET=100㎡/g)
HIFULL® HL-380 (BET=400㎡/g)
HIFULL® HL-300 (BET=300㎡/g)
HIFULL® HL-200 (BET=200㎡/g)
HIFULL® HL-150 (BET=150㎡ /g)
Hubei Huifu Nanomaterial Co., Ltd. manufactures more than 10 grades of fumed silica, both hydrophilic and hydrophobic. We get ISO, REACH, and participate in setting ISO18473-3-2018, ISO18473-1-2015, and ISO23157. We are strong in R&D product quality and factory capacity. Feel free to contact us by email: tww@hifull.com
ABOUT HIFULL
Our main products are fumed silica, nano titanium dioxide, and nano aluminium oxide. We get 20+ years of expertise and 40,000 tons of annual capacity. We supply total of 23 grades of hydrophilic & hydrophobic fumed silica. We have registrations for EU-REACH, Turkey-REACH, K-REACH and UK-REACH. We are the leading setting body for ISO18473-3:2018, ISO23157:2021 and ISO18473-4:2022. Learn More About Hifull
Frequently Asked Question
A Manufacturer. Hubei Huifu has been researching and manufacturing fumed silica for 20+ years. We are the largest manufacturer of fumed silica in China, with a well-developed and stable manufacturing process.
We have registrations for EU-REACH, Turkey-REACH, K-REACH and UK-REACH. We get certificates of ISO 9001, ISO 14001. We are the leading setting body for ISO18473-3:2018, ISO23157:2021 and ISO18473-4:2022.
Free Sample: All grades of fumed silica sample available, Contact to Us
Pyrohydrolysi & Trichloromethylsilane
Fumed silica is synthesized by the pyrohydrolysis of silicon tetrachloride or trichloromethylsilane in the flame of hydrogen and oxygen. Our main raw material is silicon tetrachloride, and the secondary is trichloromethylsilane.
Hydrophilic Fumed Silica SiO2:
Hydrophobic Fumed Silica SiO2:
Fumed Titanium Dioxide TiO2
Fumed Aluminium Oxide Al2O3
Price is based on the actual grade.
When the price of raw material fluctuates, we may adjust the price accordingly, please enquire before placing orders. Our email: tww@hifull.com. Cell : + 86-15671056880
When fumed silica is used as filler or additives, it helps in thickening, reinforcement, transparency, free-flow, thixotropic performance, dielectric properties, anti-settling, heat insulation, and anti-sagging. For example, for powder products, HIFULL fumed silica is used as an anti-caking agent; for liquid products, HIFULL fumed silica is used as an anti-settling agent or suspending agent.
| Applications | Functions | Recommended Dosage |
| Paints & Coatings | rheology & thixotropic control,anti-sagging,anti-settling | 0.5-2% |
| UPR, Gel Coat | rheology & thixotropic control,,anti-sagging,anti-settling | 0.5-2% |
| HTV Silicone Rubber | reinforcement | 15-30% |
| RTV Silicone Rubber | thickening & reinforcing | 10-20% |
| Adhesives | rheology & thixotropic control, anti-sagging,anti-settling | 2-10% |
| Cable Gel | thickening | 5-10% |
| Gel Battery | thickening | 0.5-6% |
| Industrial Powders | anti-caking | 0.5-1% |
Quality Stabilization: we are the earliest fumed silica manufacturers with independent R&D in China, which guarantees our product stabilization.
Largest Manufacturer: Our annual output of fumed silica is about 40,000 tons.
Strong R&D Team: Besides our own R&D institute and application& technology department, we’ve to build a research center with Sichuan University and Wuhan University, both are top-tier universities in China.
Leading Authority: We have already been the influential enterprise in the silicon industry in China. Doctor Wang Yuelin, the actual controller of Hifull, is the leader of the Sino-Germany project ISO18473-3 << Fumed Silica for Silicon Rubber>> and he is granted the Outstanding Contribution Award by the committee.
Mainly T/T, L/C and D/P, actual payment terms please check with sales when placing orders.
We will arrange delivery immediately according to the manufacturing schedule and conditions. Due to shipping schedule or other factors, please check with sales when placing orders.
Still have questions?
If you cannot find an answer to your question in our FAQ, you can always contact us and we will be with you shortly.
Hello, Customers
My name is Van, I’m the business manager of HIFULL, I have been in Fumed Silica Industry for more than 10 years. Feel free to contact me. I’m happy to provide you the best service and products.
