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11
2025
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04
A core enabler for functional upgrades and performance breakthroughs in high-end materials.
In medicinal ointments, it improves the stability of oil-based matrices and prevents delamination. In high-end foundations, the hydrophobic particles absorb skin oils
In the pursuit of weather-resistant stability, interfacial compatibility, and multifunctional materials in high-end manufacturing, hydrophobic fumed silica, with its precise surface modification technology and excellent physical and chemical properties, has become a "performance engine" for cross-disciplinary material upgrades, playing an irreplaceable core role in high-end applications such as coatings, rubber, and pharmaceuticals.
Its core competitiveness stems from its cutting-edge preparation process. After synthesizing an amorphous siloxane backbone via a vapor phase method, surface modification using silane coupling agents such as hexamethyldisilazane reduces hydroxyl coverage to below 5% and achieves contact angles exceeding 150°. This material combines superhydrophobicity with an extremely large surface area of 300-400 m²/g, and boasts a controlled particle size uniformity of 5-20 nm, meeting the refined demands of high-end materials.
In the high-end coatings industry, it serves as a "long-lasting, stable enabler." Adding 1%-3% hydrophobic fumed silica to marine antifouling coatings creates a micro-nano rough, hydrophobic surface, reducing the coating's water absorption by 60% and extending its salt spray corrosion resistance from 5 years to 12 years. In matte wood paint, its hydrophobic groups reduce water penetration, preventing blistering and cracking in the paint film while maintaining over 90% light transmittance.
In the rubber industry, hydrophobic fumed silica has become a key element in performance optimization. In silicone rubber seals, it enhances the bond with rubber molecules through a hydrophobic interface, increasing tensile strength by 40% and reducing compression set to below 15%, making it suitable for sealing applications in extreme environments such as aerospace.
In the pharmaceutical and cosmetic sectors, it combines safety with functionality. In medicinal ointments, it improves the stability of oil-based matrices and prevents delamination. In high-end foundations, the hydrophobic particles absorb skin oils, extending makeup's wear time by 5-8 hours while also providing water and sweat resistance. As high-end manufacturing upgrades toward greener and more intelligent manufacturing, composite modified hydrophobic fumed silica and biodegradable silicon-based materials are experiencing rapid development, offering new avenues for breakthroughs in material performance and industrial upgrading.
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Jinan City, Shandong Province,China
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Guangzhou City, Guangdong Province
