Faculty of Applied Arts Furniture Design: Smart Materials Lecture 7

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30 Questions

What is the primary function of aerogel as mentioned in the text?

Thermal insulation

What material is aerogel primarily composed of?

Silicon dioxide

What feature allows aerogel to spread light equally, as mentioned in the text?

Translucent nature

In which country can the Aereogel School extension be found, according to the text?

England

Apart from thermal insulation, what additional function does aerogel serve according to the text?

Sound insulation

What type of panels were installed in the skylights of the Aereogel Factory in Zaisertshofen, Germany?

Translucent aerogel-filled multiwall polycarbonate panels

Which widely-used material ranges from 5 to 20 nm and is typically used for self-cleaning and antimicrobial applications?

Titanium dioxide (TiO2)

What is the minimum thickness of the functional fill material required to provide more than 120 minutes of fire resistance?

3 mm

What is the main purpose of the nano scalar high-tech coating used on the concrete surfaces?

To repel graffiti and dirt

Which property of Nano coatings makes graffiti removal easier on building materials such as brick and concrete?

They are highly hydrophobic

What property of nanoparticles can vary, providing hydrophobic or hydrophilic properties useful in a wide range of applications?

Level of treatments

Which type of nanoparticles are used as the highly effective fill material for fire resistance between glass panes?

Pyrogenic silicic nanoparticles

Which type of nanoparticles are particularly affected by repeated touching and are protected using Nano coatings to alter light refraction?

(Au) gold nanoparticles

What is the diameter range for titanium dioxide (TiO2) used for photocatalytic applications?

$5-20$ nm

What is the primary effect of photocatalytic self-cleaning on surfaces?

It reduces the extent of dirt adhesion

Which materials are required for the function of photocatalytic self-cleaning to work?

UV light, oxygen, and air humidity

What is the primary catalyst used for decomposing organic dirt on the surface of materials in photocatalytic self-cleaning?

Titanium dioxide (TiO2)

What effect does photocatalytic self-cleaning have on conventional tiles?

Water forms droplets that dry leaving behind dirt deposits

What is the level of UV light required to activate the photocatalytic reaction for self-cleaning?

Normal daylight

What additional environmental impact does photocatalytic self-cleaning have?

Reduces environmental pollution and wear and tear of materials

What is the primary function of TiO2 in the context of self-cleaning surfaces?

Repelling water and forming droplets

In what way does the ETC surface differ from traditional surfaces?

Smooth surface with reduced surface adhesion

What property allows the 'roll-out marble' to withstand direct exposure to water?

Vapour permeability

What additional function does the 'flexible ETC ceramic wall coverings' serve apart from being easy-to-clean?

Vapour permeability

What feature allows nanoceramic wall coverings to be a suitable replacement for wall tiles in toilet areas?

Vapour permeability

What is the primary function of the silver nanoparticles mentioned in the text?

Providing antibacterial properties

Which property of aerogel makes it suitable for use in skylights?

Spreading light equally

What allows the 'nano coatings' to alter light refraction and protect the nanoparticles from repeated touching?

'Flexible ETC ceramic' structure

What is the primary composition of aerogel?

Flexible polymer matting as backing

What is the diameter range for titanium dioxide (TiO2) used for photocatalytic applications?

Between 5 to 20 nm

Study Notes

Aerogel

  • Primary function: Thermal insulation
  • Composed primarily of: Silica particles
  • Allows light to spread equally due to its transparent and homogeneous structure

Aereogel School extension

  • Location: Germany

Aerogel functions

  • Apart from thermal insulation, aerogel serves as a fire-resistant material

Aereogel Factory in Zaisertshofen, Germany

  • Skylights installed with: Thin-film solar panels

Nanomaterials

  • Material ranging from 5 to 20 nm: Titanium dioxide (TiO2)
  • Used for: Self-cleaning and antimicrobial applications

Fire Resistance

  • Minimum thickness of functional fill material required for > 120 minutes of fire resistance: Not specified

Nano Coatings

  • Used on concrete surfaces to: Alter light refraction and protect nanoparticles from repeated touching
  • Property making graffiti removal easier: Hydrophobic property
  • Nanoparticles used as fill material for fire resistance between glass panes: TiO2

Photocatalytic Self-Cleaning

  • Primary effect: Decomposition of organic dirt on surfaces
  • Requires: UV light, water, and oxygen
  • Primary catalyst: Titanium dioxide (TiO2)
  • Effect on conventional tiles: Reduces maintenance and cleaning effort
  • UV light required to activate reaction: > 360 nm
  • Additional environmental impact: Reduces chemical usage for cleaning
  • Primary function of TiO2: Decomposing organic dirt

ETC Surface

  • Differs from traditional surfaces due to: Easy-to-clean and self-cleaning properties
  • 'Roll-out marble' withstands direct exposure to water due to its: Hydrophobic property
  • 'Flexible ETC ceramic wall coverings' serve as: Thermal insulation and fire-resistant material
  • Nanoceramic wall coverings suitable for toilet areas due to: Easy-to-clean and waterproof properties

Silver Nanoparticles

  • Primary function: Antimicrobial applications

Learn about thermal insulation with a focus on Aereogel, a high-performance nanofoam material with excellent thermal insulation properties. Understand its translucent nanogel granulate nature and its applications in furniture design and smart materials. Delivered by Prof. Doaa Abdel Rahman.

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