Tag

Coatings

All articles tagged with #coatings

science22 days ago•24 min saved

Ultra-dark automotive coating blends carbon black and nanotubes to trap 99.9% of light

Researchers have developed a new ultrablack coating for cars by combining carbon black pigment with carbon nanotubes in a structure that traps light, achieving absorption of more than 99.9% of visible light while meeting humidity, water-resistance, and adhesion tests and compatible with standard spray-coating processes. This approach aims to overcome manufacturability and durability limits of nanotube-only coatings like Vantablack, potentially enabling luxury, deeply black finishes in automotive and other applications.

via C&EN|

#automotive #carbon-black #carbon-nanotubes

space1 month ago•10 min saved

Atomic Oxygen: The Hidden Material Menace in Low Earth Orbit

Atomic oxygen in low Earth orbit aggressively erodes carbon-based polymers, carbon composites, and optical surfaces on spacecraft such as the ISS. NASA tests exposed material trays outside the station to study damage and variations in material properties, leading to protective coatings like silicon dioxide or aluminum oxide to mitigate reactions with single oxygen atoms. In LEO, the atmosphere is a thin, UV-driven environment rather than a hard vacuum, so long-duration missions require careful material selection and protective measures; very low orbits demand extra care for satellites. Deep space exposure to atomic oxygen is much less of a concern, making this primarily a LEO issue.

via Hackaday|

#atomic-oxygen #coatings #low-earth-orbit

technology1 year ago•5 min saved

Revolutionary Coatings Unlock New Possibilities

High-performance coatings are crucial in enhancing the functionality and durability of various technologies, from jet engines to space equipment. These coatings allow materials to withstand extreme conditions, such as high temperatures and low gravity, improving efficiency and reducing costs. Researchers are continuously developing advanced coatings to address challenges like biofilm formation in space and non-stick solutions in manufacturing. However, the effectiveness of coatings can vary, and incorrect applications can lead to significant financial losses.

via BBC.com|

#biofilms #coatings #jet-engines