Sökning: "Polymer egenskaper"

Visar resultat 21 - 25 av 108 uppsatser innehållade orden Polymer egenskaper.

  1. 21. Recycling methods for glass fibre-reinforced plastic polymers : Glass fibre composites in a circular economy?

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Hanna Karlsson; [2022]
    Nyckelord :Composites; Glass; Fibre; Reinforced; Recycling; Circular economy; Circularity; Reinforcement; Plastic; Polymer; End-of-life; Reuse; Waste; Materials Chemistry; Chemistry;

    Sammanfattning : The reinforced composite industry is expanding. This raises the need for more sustainable resource use and waste management. A concept to combat both is circularity, creating a loop between the raw resources and the waste. Two important parts of circularity are recycling and reusing. LÄS MER

  3. 22. Mineral wool : From landfill to a sustaianble polymer composite

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Noéll Sjöbeck; [2022]
    Nyckelord :recycling; sustainability; waste management; circular economy; mineral wool; construction and demolition industry; composites; polymers; återvinning; hållbarhet; avfallshantering; cirkulär ekonomi; mineralull; bygg- och rivningsindustri; kompositer; polymerer;

    Sammanfattning : The focus of the project is recycling of the insulation material mineral wool. The aim is to investigate the potential of using post-consumer wool from landfill as fiber reinforcement in a polymer matrix. LÄS MER

  4. 23. Charge transfer states at polymer solar cell interfaces : Insights from atomic-scale modeling

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Rickard Svensson; [2022]
    Nyckelord :organic solar cells; OSC; polymer; interface; charge transfer; non-fullerene acceptor; PYT; PBDB-T; DFT; TD-DFT; conformation; alkyl groups; methylation; HOMO; LUMO; FMO; NTO; UV-Vis; DOS; exciton; exciton binding energy; dipole moment; open-circuit voltage; organiska solceller; OSC; polymer; gränssnitt; laddningsöverföring; icke-fullerenacceptor; PYT; PBDB-T; DFT; TD-DFT; konformation; alkylgrupper; metylering; HOMO; LUMO; FMO; NTO; UV-Vis; DOS; exciton; excitonbindningsenergi; dipolmoment; tomgångsspänning;

    Sammanfattning : Organic solar cells (OSCs) based on non-fullerene acceptors (NFAs) have attracted a great deal of attention in recent years due to their rapidly increasing efficiency and enormous potential. In this work, the optical and electronic properties of systems containing the very promising non-fullerene acceptor PYT have been thoroughly studied with the use of the density functional theory (DFT) and the time-dependent density functional theory (TDDFT). LÄS MER

  5. 24. Strain rate-dependent mechanical properties of high-density polyethylene(HDPE)

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Oscar Andersson; Alexander Wiklund; [2022]
    Nyckelord :HDPE; strain rate; DIC; inverse calibration; Abaqus; HDPE; töjningshastighet; DIC; Inverskalibrering; Abaqus;

    Sammanfattning : In today’s packaging industry HDPE is widely used and correct understanding of itsproperties and how to model them is of vital importance. HDPE is a semi-crystallinepolymer with a known strain rate dependence, that is a higher yield and lower strainto failure at higher strain rates. LÄS MER

  7. 25. Framställning av magnetisk polymerkomposit : Stålpulverfylld epoxi med magnetiska egenskaper

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Linda Ek Fliesberg; Beatrice Linné; [2021]
    Nyckelord :material science; composites; magnetism; polymers; materialvetenskap; kompositer; magnetism; polymerer;

    Sammanfattning : To compete with other manufacturing companies in the market, product design and manufacturing methods need to be improved constantly. To save time and money, there is an advantage if there is a manufacturing plan in place before designing the final product. LÄS MER