Silica Aerogel Sheets for Thermal Insulation

Overview of Silica Aerogel Sheets for Thermal Insulation

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 Silica Aerogel Sheets for Thermal Insulation

1. Extremely Low Density: Aerogels are some of the world's lightest solids, with densities as low as 0.001 grams per cubic centimeter.

2. 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.

3. 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.

4. Translucent to Transparent: Depending on their composition, aerogels can transmit light, giving them a unique semi-transparent or transparent appearance.

5. Mechanical Strength: Despite their fragile appearance, aerogels can be engineered to possess significant mechanical strength, capable of bearing considerable weight.

6. Chemically Inert: Many aerogels are chemically stable and resistant to corrosion, making them suitable for harsh environments.

(Silica Aerogel Sheets for Thermal Insulation)

Parameters of Silica Aerogel Sheets for Thermal Insulation

Silica aerogels are made by mixing colloidal silica powders with liquid water, and then cooling the mixture to reduce the particle size. The resulting aerogel has excellent thermal insulation properties, as it can trap heat close to its surface while allowing heat to escape through small gaps. The specific parameters of silica aerogels used for thermal insulation include: * Thermal conductivity: This is a measure of how well an aerogel conducts heat. A higher thermal conductivity indicates better insulation. * Porosity: This is a measure of the amount of empty space within the aerogel. A higher porosity indicates better insulation as more heat can be trapped in the aerogel. * Material density: This is a measure of the mass per unit volume of the aerogel. A lower material density indicates better insulation as less air is required to achieve the same level of insulation. * Glass content: Some types of silica aerogels contain glass, which adds an additional layer of insulation. It's important to note that the performance of silica aerogels for thermal insulation will depend on several factors, including the type of silica used, the method of preparation, and the specific conditions under which the aerogel is exposed to heat. Therefore, the specific parameters of a given silica aerogel may vary depending on these factors.

(Silica Aerogel Sheets for Thermal Insulation)

Applications of Silica Aerogel Sheets for Thermal Insulation

1. Thermal Insulation: Used in aerospace for spacecraft insulation, and in commercial and residential buildings for energy-efficient windows and insulation materials.

2. Environmental Remediation: Aerogels' high surface area makes them effective in absorbing pollutants like oil spills and heavy metals from water.

3. Sound Absorption: Their porous structure absorbs sound waves effectively, making them useful in noise reduction applications.

4. Electronics: Aerogels' low thermal conductivity and electrical insulation properties find applications in semiconductor and battery technology.

5. Optics and Photonics: Translucent aerogels are used in optical devices, light-guiding structures, and as filters.

6. Drug Delivery: The high surface area can be utilized for controlled drug release, making aerogels candidates for advanced medical applications.

Company Profile

Cie-China is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality concrete additives and relatives products.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality concrete materials and relative products, please feel free to contact us or click on the needed products to send an inquiry.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

It could be shipped by sea, by air, or by reveal ASAP as soon as repayment receipt.

FAQs of Silica Aerogel Sheets for Thermal Insulation

Q: Is Silica Aerogel Sheets for Thermal Insulation 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 Silica Aerogel Sheets for Thermal Insulation made? A: Silica Aerogel Sheets for Thermal Insulation 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 Silica Aerogel Sheets for Thermal Insulation 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 Silica Aerogel Sheets for Thermal Insulation 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 Silica Aerogel Sheets for Thermal Insulation 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.

(Silica Aerogel Sheets for Thermal Insulation)