How Can Aerogel Make You Waterproof?

TL;DR

Aerogel can make you waterproof by combining its particles with a non-flammable binder, which forms a protective layer on your skin. This layer insulates against extreme heat while repelling water due to modified hydrophobic properties. Additionally, aerogel's moisture absorption capabilities are leveraged in various applications, including museum conservation and space missions.

Transcript

I feel confident You're confident that I am NOT gonna be damaged? not permanently okay let me back up for a moment. I want to talk about the properties of aerogel the world's lightest solid. What I'm gonna do is I'm gonna lean in so it's coming in through this mic and then can you do that again yeah this is what it sounds like that is weird it has ... Read More

Key Insights

• 🙂 Aerogel is the world's lightest solid and provides excellent thermal insulation due to its nano-scaled structure.
• 🚱 By combining aerogel with a non-flammable binder, it becomes more usable and can be applied on the skin without causing harm.
• 🤑 Aerogel can be made waterproof by replacing some surface groups with hydrophobic ones.
• 💄 Its ability to absorb moisture makes it useful in various applications, such as insecticides and moisture regulation in museum cases.
• 🎟️ Aerogel is being used in space missions, such as the NASA InSight mission, to help maintain vacuum and absorb moisture.
• 🦾 Different materials can be used to create aerogel, and they have varying thermal and mechanical properties.
• 👻 Composite materials, such as aerogel blankets, allow for more workable and flexible aerogel applications.

Questions & Answers

Q: How does aerogel provide excellent thermal insulation?

Aerogel's nano-scaled sponge-like structure and high surface area allow it to contain a significant amount of air, making it a highly effective thermal insulator.

Q: Can aerogel be applied on the skin without causing harm?

Yes, by combining aerogel particles with a non-flammable binder, it can be applied on the skin and even exposed to a blowtorch without causing permanent damage.

Q: How can aerogel be made waterproof?

Aerogel, which is naturally hydrophilic, can be made waterproof by replacing some of the hydroxyl (OH) groups on its surface with hydrophobic groups, causing water to bounce off without penetrating.

Q: What are some of the applications of aerogel?

Aerogel has various applications, including as a physical insecticide, a moisture regulator in museum cases, insulation for subsea oil pipelines, and even in detecting Mars quakes.

Summary & Key Takeaways

• Aerogel, the world's lightest solid, is a highly effective thermal insulator but is difficult to work with due to its fragility.

• By combining aerogel with a non-flammable binder, it becomes more usable and can be applied on the skin without causing harm.

• Aerogel can also be made waterproof by incorporating hydrophobic groups, and its ability to absorb moisture is being used in applications such as museum cases and detecting Mars quakes.