АО Хубэй Хуэйфу Наноматериалы

To expand the application of fumed silica in highly polar systems, organic silicon-based modifiers are often used to impart hydrophobicity to its surface. Polydimethylsiloxane (PDMS), commonly known as silicone oil, is a linear organosilicon polymer characterized by excellent thermal stability, low surface energy, and good compatibility, making it an ideal hydrophobic modifier. During the modification process, PDMS interacts with the silanol groups on the surface of hydrophilic fumed silica through physical coating or chemical reactions...

Fumed silica, as an important functional filler, is produced by the hydrolysis of volatile chlorosilanes in a hydrogen-oxygen flame. It features nano-scale primary particles (typically 7-40nm), a high specific surface area (ranging from 30-450m²/g), and a highly developed agglomerated structure. However, hydrophilic fumed silica is rich in surface silanol groups (-OH), possessing strong polarity and hygroscopicity. In highly polar organic systems or environments sensitive to moisture, it tends to...

Fumed silica, also known as white carbon black, is a nano-scale amorphous silicon dioxide powder generated through the high-temperature hydrolysis of silicon halides (such as silicon tetrachloride) in a hydrogen-oxygen flame. However, the surface of untreated fumed silica is rich in hydrophilic hydroxyl groups, resulting in poor dispersibility in non-polar or weakly polar systems, which limits its application in hydrophobic systems. Therefore, the industry often employs organosilane modifiers for...

In modern materials science and industrial applications, fumed silica is a vital inorganic nanomaterial. Valued for its high specific surface area, excellent dispersibility, and superior surface activity, it is extensively utilized across sectors including coatings, rubber, plastics, cosmetics, and electronic packaging. With technological advancement, the demand for functionalized modification of fumed silica has grown significantly. In particular, the precise regulation of its hydrophobicity has become a critical factor in enhancing the overall performance of materials...

Fumed silica, commonly known as white carbon black, is an ultrafine nanopowder characterized by its small particle size and large specific surface area. As one of the most successfully industrialized nanomaterials, it boasts a wide range of applications. However, the abundant hydroxyl groups on its surface render it highly polar and prone to moisture adsorption, which impairs its dispersibility in polymer matrices. To address this, surface modification is essential to enhance its dispersibility and interfacial bonding in polymers, thereby broadening its application scope...

Fumed silica, also known as white carbon black, is an extremely fine amorphous silica produced by the high-temperature hydrolysis of halosilanes in an oxyhydrogen flame. Its surface is rich in a large number of silanol groups, giving it strong polarity and high hydrophilicity. Untreated hydrophilic fumed silica has a strong tendency to agglomerate, which can lead to excessive stress concentration in organic phases, causing various defects and severely affecting the performance of polymers. To expand...

Hydrophilic fumed silica is produced via the high-temperature hydrolysis reaction of silicon halides in a hydrogen-oxygen flame. Since hydroxyl groups remain on the surface of its particles, it exhibits hydrophilic properties. Hydrophilic silica can be wetted by water and disperses readily in water. The primary particle size of hydrophilic fumed silica ranges from 7 to 40 nm, with an average aggregate particle size of 150 to 300 nm, and an average agglomerate particle size of 1 to 50 μm. Its specific surface area falls between 90 and 400 m²/g, and the pH of a 4% aqueous solution is between 3...

With continuous exploration and innovation in the application functions and fields of fumed silica, Hubei Huifu Nanomaterial Co., Ltd.(HIFULL®) has achieved ongoing breakthroughs and results in the application of fumed silica nanopowder. To date, HIFULL® offers 9 grades of hydrophilic fumed silica (HL-30/HL-50/HL-90/HL-150/HL-200/HL-260/HL-300/HL-380/HL-450) and 12 grades of hydrophobic fumed silica: 5 treated with hexamethyldisilazane(HMDS) (HB-132/HB-612/HB-615/HB-620/HB-630), 3 with polydimethylsiloxane(PDMS)...

Fumed silica, commonly known as "white carbon black," is a nano-scale amorphous silica powder obtained by high-temperature hydrolysis of silicon halides in an oxyhydrogen flame. Inside the reaction furnace, halosilanes hydrolyze into individual silica molecules and rapidly grow into spherical particles of 7-40nm. These particles are the primary particles of fumed silica. In a molten state, primary particles continue to move along with the flame in the reaction furnace and collide with each other, forming three-dimensional branched structures composed of multiple fused spherical particles...