1. Self-cleaning
The superhydrophobicity of the surface of the aerogel powder makes it self-cleaning, and the water droplets can form nearly spherical on the surface and roll off easily, taking away the dust, dirt and other impurities on the surface, keeping the surface clean, reducing the cost of cleaning and maintenance.
2. Good chemical stability
At room temperature, the material is stable, not easy to chemical reaction, can be used in a wide pH range and chemical environment, can resist acid, alkali, salt and other chemical substances erosion, not easy to be corroded or degraded.
3. Good biocompatibility
Some of the superhydrophobic aerogel powders have good biocompatibility and have potential applications in the biomedical field, such as for drug slow-release carriers, tissue engineering scaffolds, etc., and can interact with biological tissues and cells without causing obvious immune reaction or toxicity.
4. Recyclability and renewability
Some raw materials for the preparation of superhydrophobic aerogel powder are widely sourced and renewable, such as the superhydrophobic aerogel powder prepared from biomass waste, which can be recycled and reused by certain methods after use to reduce resource waste and environmental pollution.
Applications of Superhydrophobic Aerogel Powder
1. Waterproof and thermal insulation material: can be added to architectural coatings and sealants to give the material super hydrophobic properties, effectively prevent rain penetration, and prevent building structures from being damaged by water erosion. At the same time, its low thermal conductivity can reduce the heat transfer of buildings, achieve efficient thermal insulation, and reduce energy consumption.
2. Self-cleaning building materials: applied to external wall tiles and roof materials, the self-cleaning characteristics of super hydrophobic aerogel powder make dust and dirt washed down with rain, keep the building appearance clean and reduce cleaning and maintenance costs.
3. Oil exploitation and transportation: Used to treat oily wastewater, super hydrophobic aerogel powder preferentially adsorb oily substances, achieve efficient separation of oil and water, recover oil resources, and reduce environmental pollution. In oil pipelines, its super hydrophobic properties prevent wax and hydrate deposition on the inner wall of the pipeline, ensuring smooth operation of the pipeline.
4. Solar equipment protection: applied to the surface of solar panels, super hydrophobic aerogel powder super hydrophobic and self-cleaning performance, can make rain quickly slide, take away dust impurities, keep the surface of the panel clean, improve solar energy conversion efficiency. At the same time, its thermal insulation performance helps to stabilize the operating temperature of the panel and extend the service life.
5. Sewage treatment: It can efficiently adsorb pollutants such as oil and heavy metal ions in water to achieve water purification. When dealing with offshore oil spills, superhydrophobic aerogel powder can be dispersed to absorb oil, which is convenient for subsequent cleaning and recovery.
6. Air purification: The use of its high specific surface area to absorb harmful gases and particles in the air, such as formaldehyde, benzene and other volatile organic compounds, as well as fine particles such as PM2.5, can be used to make air purification filter screen, mask filter layer.
FAQ
1. What are the application advantages in the field of construction?
After adding in architectural coatings and sealants, it can effectively prevent rainwater penetration and prevent building structures from being damaged by water erosion; Its low thermal conductivity can reduce the heat transfer of buildings, achieve efficient thermal insulation and reduce energy consumption; It can also be used for external wall tiles and roofing materials, using its self-cleaning properties to keep the building appearance clean.
2. What are the potential applications in the biomedical field?
It has good biocompatibility and can be used as a drug carrier to achieve slow drug release, prolong drug action time and improve therapeutic effect. It can also be used as tissue engineering scaffold material to provide three-dimensional structural support for cell growth and promote tissue repair and regeneration.
3. How about chemical stability?
The material is an inorganic material, stable at room temperature, not easy to chemical reaction, can be used in a wide pH range and chemical environment, can resist acid, alkali, salt and other chemical substances erosion, not easy to be corroded or degraded.
4. Is it flammable?
It has good flame retardant performance and is not easy to burn in high temperature or open flame environment, which improves the safety of use.
5. What materials can be combined with?
It can be combined with a variety of materials, such as polymers, metals, ceramics, etc. The flexibility and processability can be improved by composite with polymer. For example, composite with polyvinyl butyral (PVB) is used to prepare thermal insulation composite. The composite with metal can improve the anti-corrosion, wear resistance and hydrophobic properties of metal materials. The combination with ceramic can enhance the toughness and heat insulation properties of ceramic.
6. What are the changes in the properties of the powder after composite?
After composite, the advantages of a variety of materials are usually integrated, such as mechanical properties are enhanced, flexibility is improved, making it easier to process and form; At the same time, on the basis of maintaining super hydrophobic performance, it may obtain better thermal insulation, conductive, antibacterial and other properties, and expand its application range.
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