Sökning: "Silica sol"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Silica sol.

  1. 1. Multifunctional ice and snow repellent coatings for photovoltaic modules

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Solcellsteknik

    Författare :Gunnar Sandkvist; [2023]
    Nyckelord :sol-gel; superhydrophobic; dip-coating; anti-reflective; silica;

    Sammanfattning : Implementation of solar power by photovoltaic modules in cold climates, such as northern Sweden, implies several challenges. Ice and snow coverage not only leads to reduction in energy production due to shading, but it also puts equipment at risk from additional weight. LÄS MER

  3. 2. Easy-to-clean properties in coatings for automotive applications

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Weyni Ghebreamlak; [2021]
    Nyckelord :Easy-to-clean surface; sol-gel; superhydrophobicity; superoleophobicity; nanoparticles; Lätt-att-rengöra yta ”Easy-to-clean” ; sol-gel; superhydrofobicitet; superoleofobicitet; nanopartiklar;

    Sammanfattning : En ”lätt-att-rengöra” yta definieras som en yta som stöter bort vatten och smuts. I detta projekt har klarlack med olika sammansättningar studerats i syfte att introducera egenskapen ”lätt-att-rengöra”. För att uppnå denna egenskap måste beläggningen vara superhydrofob och oleofob. LÄS MER

  4. 3. Medical Implant Applications of Mesoporous Silica Films

    Kandidat-uppsats, Linköpings universitet/Nanostrukturerade material

    Författare :Patrik Geite; [2019]
    Nyckelord :Mesoporous silica; films; implants; drug delivery; osseointegration;

    Sammanfattning : A literature review of medical implant applications of mesoporous silica films was written, highlighting the advantages and limitations of different film synthesis methods. Both films synthesized through the EISA sol-gel method and particulate films, including those synthesized through the direct growth method, were reviewed and discussed. LÄS MER

  5. 4. Influence of gas sparging on membrane performance

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Sandra Farran-Lee; [2015]
    Nyckelord :chemical engineering; kemiteknik; Technology and Engineering;

    Sammanfattning : A new oxygen barrier film that is made of arabinoxylan has been developed by the company Xylophane. Arabinoxylan is available among other things in wheat bran. But a problem with the method of extracting the arabinoxylan is that after an alkali extraction is ultrafiltration used to remove impurities and the flux during this is quite low. LÄS MER

  7. 5. Quartzene – A promising thermal insulator : Studies of thermal conductivity’s dependence of density and compression of Quartzene® in the form of powder.

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Erik Bamford; Gustav Ek; Daniel Hedbom; Johan Nyman; Victor Petterson; Josefin Sjöberg; Ida Styffe; Olivier Vizuete; [2014]
    Nyckelord :aerogel; insulation; conductivity; compression; Knudsen; Quartzene;

    Sammanfattning : The purpose of this project was to study Svenska Aerogel AB’s product Quartzene®, and develop its capacity as a thermal insulator. Quartzene® is a silica based mesoporous material developed by Svenska Aerogel AB, with properties similar to aerogels produced by the sol-gel process. LÄS MER