Sökning: "peroxide"

Visar resultat 1 - 5 av 224 avhandlingar innehållade ordet peroxide.

  1. 1. Structural Aspects of Peroxide Crosslinking of Polyethylene

    Författare :Annika Smedberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; poly ethylene-co-divinylsiloxane ; network; poly ethylene-co-1; peroxide; crosslinking; LDPE; topography; 9-decadiene ; entanglements;

    Sammanfattning : Despite major developments in the ways of polymerising ethylene (the processes as well as the catalysts) the use of polyethylene is still restricted in several applications due to its low melting point. This shortcoming can in some areas be overcome by the introduction of crosslinks between the polymer chains. LÄS MER

  3. 2. Organic electronic materials for hydrogen peroxide production

    Författare :Maciej Gryszel; Eric Glowacki; Magnus Jonsson; Erin Ratcliff; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrogen peroxide; catalysis; organic materials; electronics;

    Sammanfattning : Hydrogen peroxide (H2O2) is an important oxidant, used in various fields of industry, such as paper manufacturing, production of polymers, detergents, and cosmetics. Considering that the molecule degrades only to H2O and O2, it is regarded as a green chemical. LÄS MER

  4. 3. Ligniners reaktioner med alkalisk väteperoxid

    Författare :Roland Agnemo; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrogen Peroxide; Alkaline; Bleaching; Lignin Models;

    Sammanfattning : Under alkaline conditions hydrogen peroxide can be used either as a 1ignin-degrading or a 1ignin-preserving bleaching agent. If heavy metal ions are present and/or silicate is absent in the reaction medium, hydrogen peroxide decomposes via hydroxyl radicals and superoxide ions to oxygen and water. LÄS MER

  5. 4. The Effect of Crosslinking on Morphology and Water Treeing in LDPE

    Författare :Susanne Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; water treeing; peroxide; network structure; crosslinking; morphology; LDPE;

    Sammanfattning : Crosslinked polyethylene (XLPE) is used as underground cable insulation due to its outstanding electrical properties and high temperature dimension stability. XLPE is made by peroxide initiated crosslinking of low density polyethylene. In recent years, polyethylene with unsaturations, i.e. LÄS MER

  7. 5. The Effect of Crosslinking on Morphology and Electrical Properties in LDPE Intended for Power Cables

    Författare :Susanne Nilsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LDPE; morphology; electrical treeing; peroxide; crosslinking; XLPE; water treeing;

    Sammanfattning : Crosslinked polyethylene (XLPE) is used as underground cable insulation due to its outstanding electrical properties and high temperature dimension stability. XLPE is often made by peroxide initiated crosslinking of low density polyethylene (LDPE). The introduction of unsaturations, i.e. LÄS MER