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Overview of High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel
Aerogels are ultralight, highly porous materials known for their exceptional insulation properties, remarkable low density, and incredible strength-to-weight ratios. Often referred to as "frozen smoke" due to their ethereal appearance, aerogels are produced by replacing the liquid component of a gel with gas, typically through supercritical drying, which avoids collapse of the gel structure. Composed primarily of air (up to 99.98%), these materials exhibit a wide array of unique characteristics that make them valuable across various industries.
Features of High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel
Extremely Low Density: Aerogels are some of the world's lightest solids, with densities as low as 0.001 grams per cubic centimeter.
Superb Insulation: They possess extremely low thermal conductivity, making them among the best insulators known to man, effective at temperatures from -270°C to 1,000°C.
High Porosity: With a porous structure that can reach up to 99.9%, aerogels have an incredibly large internal surface area, enhancing their functionality in absorption and catalysis applications.
Translucent to Transparent: Depending on their composition, aerogels can transmit light, giving them a unique semi-transparent or transparent appearance.
Mechanical Strength: Despite their fragile appearance, aerogels can be engineered to possess significant mechanical strength, capable of bearing considerable weight.
Chemically Inert: Many aerogels are chemically stable and resistant to corrosion, making them suitable for harsh environments.
(High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel)
The above information is for the 5um SiO2 aerogel powder with its chemical formula: SiO2. The CAS number () is 7631-86-9, which indicates that it is a chemical substance from the country of China. The silica aerogel parameter refers to the porosity and surface area of the silicogel. Porosity refers to the fraction of the surface area of the silica aerogel that is covered by liquid. It can be expressed as the ratio of porosity to total surface area. Surface area refers to the amount of solid material on the surface of the silica aerogel. Silica aerogels have been widely used in various applications due to their unique properties such as high porosity, high surface area, and low weight. They are commonly used in drug delivery systems, optical fibers, sensors, and other fields.
(High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel)
Applications of High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel
Thermal Insulation: Used in aerospace for spacecraft insulation, and in commercial and residential buildings for energy-efficient windows and insulation materials.
Environmental Remediation: Aerogels' high surface area makes them effective in absorbing pollutants like oil spills and heavy metals from water.
Sound Absorption: Their porous structure absorbs sound waves effectively, making them useful in noise reduction applications.
Electronics: Aerogels' low thermal conductivity and electrical insulation properties find applications in semiconductor and battery technology.
Optics and Photonics: Translucent aerogels are used in optical devices, light-guiding structures, and as filters.
Drug Delivery: The high surface area can be utilized for controlled drug release, making aerogels candidates for advanced medical applications.
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FAQs of High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel
Q: Is High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel fragile? A: Traditional aerogels are brittle and fragile; however, advancements have led to the development of "flexible" or "rigid" aerogels that maintain their unique properties while being more durable.
Q: How is High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel made? A: High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel is synthesized by replacing the liquid in a gel with gas without causing the structure to collapse. This is typically achieved through supercritical drying, where the solvent is converted to a supercritical state, allowing it to evaporate without forming liquid-gas interfaces that could damage the gel structure.
Q: Is High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel expensive? A: Historically, aerogels have been costly due to their complex manufacturing process. However, with technological advancements and economies of scale, costs are gradually decreasing.
Q: Can High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel conduct electricity? A: Most aerogels are poor conductors of electricity due to their porous, insulating nature. However, certain metal-oxide aerogels can display semiconducting or even conducting properties.
Q: Is High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel environmentally friendly? A: Aerogels themselves do not pose environmental hazards, and their use in insulation can reduce energy consumption. However, the production process may involve chemicals that require careful handling and disposal.
(High Quality 5 um SiO2 Aerogel Powder CAS No. 7631-86-9 Silica Aerogel)
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