blankets silica aerogel for cold insulation

Overview of blankets silica aerogel for cold 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 blankets silica aerogel for cold 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.

(blankets silica aerogel for cold insulation)

Parameters of blankets silica aerogel for cold insulation

Silica gel is a popular material used in cold insulation applications due to its excellent thermal conductivity and resistance to temperature fluctuations. Silica gel is available in various shapes, sizes, and colors to meet the specific needs of different applications. One of the most commonly used types of silica gel for cold insulation is a column gel, which is made up of many interconnected strands of dioxide molecules. This type of gel can be rolled or shaped into different shapes, such as slits, windows, and panels, to provide thermal protection and insulating properties. The shape of the columns allows for the direct flow of heat through the gel, preventing it from trapped at one place and causing temperature fluctuations. Another type of silica gel is a Voronoi gel, which consists of interconnected rolls of dioxide particles with smaller and larger strands attached to them. Voronoi gel is more uniform in temperature than column gel and provides better performance for providing continuous heat flow through the insulation layer. Silica gel is also available in a variety of other types, including vacuum films, rubber sheets, and microcarrier films. These materials can be designed to fit different requirements and applications, such as improving heat transfer through thin films, increasing thermal conductivity, or providing high density insulation. In conclusion, silica gel is an effective material for cold insulation applications due to its excellent thermal conductivity, resistance to temperature fluctuations, and ability to provide continuous heat flow through the insulation layer. of the right type of silica gel depends on the specific application and desired properties.

(blankets silica aerogel for cold insulation)

Applications of blankets silica aerogel for cold 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.

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FAQs of blankets silica aerogel for cold insulation

Q: Is blankets silica aerogel for cold 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 blankets silica aerogel for cold insulation made? A: blankets silica aerogel for cold 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 blankets silica aerogel for cold 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 blankets silica aerogel for cold 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 blankets silica aerogel for cold 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.

(blankets silica aerogel for cold insulation)