Faculty of Applied Arts Furniture Design: Smart Materials Lecture 7
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Questions and Answers

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

  • Light transmission
  • Thermal insulation (correct)
  • Fire protection
  • Sound insulation

    • What material is aerogel primarily composed of?

  • Glass
  • Polycarbonate
  • Nanofoam
  • Silicon dioxide (correct)

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

  • Thermal insulation
  • Translucent nature (correct)
  • Fire protection
  • Multi-wall panels

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

    <p>England</p> Signup and view all the answers

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

    <p>Sound insulation</p> Signup and view all the answers

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

    <p>Translucent aerogel-filled multiwall polycarbonate panels</p> Signup and view all the answers

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

    <p>Titanium dioxide (TiO2)</p> Signup and view all the answers

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

    <p>3 mm</p> Signup and view all the answers

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

    <p>To repel graffiti and dirt</p> Signup and view all the answers

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

    <p>They are highly hydrophobic</p> Signup and view all the answers

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

    <p>Level of treatments</p> Signup and view all the answers

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

    <p>Pyrogenic silicic nanoparticles</p> Signup and view all the answers

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

    <p>(Au) gold nanoparticles</p> Signup and view all the answers

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

    <p>$5-20$ nm</p> Signup and view all the answers

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

    <p>It reduces the extent of dirt adhesion</p> Signup and view all the answers

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

    <p>UV light, oxygen, and air humidity</p> Signup and view all the answers

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

    <p>Titanium dioxide (TiO2)</p> Signup and view all the answers

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

    <p>Water forms droplets that dry leaving behind dirt deposits</p> Signup and view all the answers

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

    <p>Normal daylight</p> Signup and view all the answers

    What additional environmental impact does photocatalytic self-cleaning have?

    <p>Reduces environmental pollution and wear and tear of materials</p> Signup and view all the answers

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

    <p>Repelling water and forming droplets</p> Signup and view all the answers

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

    <p>Smooth surface with reduced surface adhesion</p> Signup and view all the answers

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

    <p>Vapour permeability</p> Signup and view all the answers

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

    <p>Vapour permeability</p> Signup and view all the answers

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

    <p>Vapour permeability</p> Signup and view all the answers

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

    <p>Providing antibacterial properties</p> Signup and view all the answers

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

    <p>Spreading light equally</p> Signup and view all the answers

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

    <p>'Flexible ETC ceramic' structure</p> Signup and view all the answers

    What is the primary composition of aerogel?

    <p>Flexible polymer matting as backing</p> Signup and view all the answers

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

    <p>Between 5 to 20 nm</p> Signup and view all the answers

    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

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    Description

    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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