What is Fumed silica?
Fumed silica is a universal thickening agent and an anticaking agent (free-flow agent) in powders. Like silica gel, it serves as a desiccant. It is used in cosmetics for its light-diffusing properties. It is used as a light abrasive in products like toothpaste. Abstract. Exposure to crystalline silica dust is associated with an increased risk for pulmonary diseases such as silicosis, tuberculosis, chronic bronchitis, chronic obstructive pulmonary disease (COPD), and lung cancer. Fumed silica (pyrogenic silica and silicon dioxide) is one of the lightest substances known. Fumed silicas are very light and fluffy and have bulk densities of 3 lbs/cu ft (38 kg/cu m). Silicon metals and alloys are produced in electric furnaces. The raw materials include quartz, coal, and wood chips.
What are the advantages of fumed silica?
Fumed silica is widely used as a reinforcement additive in silicone elastomers with significant mechanical property benefits, namely increased tensile strength, elongation, and tear strength. Solubility / Solution Stability:2 Fumed silica will form dispersions in water, glycerin, butyl alcohol, mineral oil, and other liquids, causing them to thicken or form gels. Fumed silica is also more expensive (see Table 1) than other silica sources, such as precipitated silica. Not unexpectedly, silica purity also decreases as the cost for a given class of silica raw material decreases. Silica fume is added to Portland cement concrete to improve its properties, particularly its compressive strength, bond strength, and abrasion resistance.
Is fumed silica cancerous?
Exposure to silica dust can lead to the development of lung cancer, silicosis (irreversible scarring and stiffening of the lungs), kidney disease, and chronic obstructive pulmonary disease. It is estimated that 230 people develop lung cancer each year due to past exposure to silica dust at work. The partial substitution of silica fume instead of cement has multiple environmental advantages: reducing pollution due to its release in nature, conserving energy and natural resources, decreasing greenhouse gas emissions, and enhancing microbial carbonate precipitation, which leads to more sustainable concrete. Fumed silica is an extremely small particle with an enormous surface area, high purity, and a tendency to form chains in chemical manufacturing. Particles are formed by injecting chlorosilanes, such as silicon tetrachloride, into a flame of hydrogen and air.
Price of Fumed silica
Fumed silica particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Fumed silica. A large amount of large amount will be lower. The Price of Fumed silica is on our company's official website.
Fumed silica supplier
Mis-Asia is a reliable and high-quality global chemical material supplier and manufacturer. It has over 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Fumed silica, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Fumed silica, you are welcome to contact us or inquire at any time.
