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Does fumed silica absorb water

While small quantities of Silica are not thought to threaten health, having Silica contaminated water can create problems around your home. Like hard water minerals, Silica can create a scale that can impact the performance of your water-using appliances and fixtures. The resulting fumed Silica has a highly porous and sponge-like structure. It also has a larger surface area than other forms of Silica, such as ground silica and precipitated Silica. The surface area makes fumed Silica highly reactive and capable of absorbing water. Fumed Silica is also somewhat 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. 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. 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. Silica dust is harmful when inhaled into your lungs. As it is 100 times smaller than a grain of sand, you can breathe it in without knowing. In addition to providing good thickening and stability, and allowing the system to exhibit elasticity to large strains, fumed Silica can also be used as a thickening additive in formulated greases. As an additive to formulated greases, fumed Silica can provide additional rheological tailoring. If you are looking for high quality, high purity and cost-effective fumed silica, or if you require the latest price of fumed silica, please feel free to email contact mis-asia.

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