Sökning: "Excess properties"

Visar resultat 1 - 5 av 178 avhandlingar innehållade orden Excess properties.

  1. 1. On thermodynamic properties of aqueous ethylamine mixtures and modelling of excess properties

    Författare :Åsa Ulrika Burman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Ethylenediamine (EDA) is a bifunctional amine used for several different purposes such as for production of the Ethylenediaminetetracetric acid (EDTA) that is used as a chelating agent in detergents but also for fungicides, bleaching activators etc. In many applications very high purity is needed and the removal of the byproduct Ethylethylenediamine (EtEDA) has proven to be difficult. LÄS MER

  3. 2. Acetylation of Solid Wood. Wood Properties and Process Development

    Författare :Pia Larsson Brelid; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microwave heating; deformation; wood; hardness; adhesive bonding; power penetration depth; shear strength; delamination; acetylation; pH; bending strength; dielectric properties; stability;

    Sammanfattning : The influence of acetylation on selected wood properties has been determined for Scandinavian pine and spruce wood, in order to predict the behavior of acetylated wood when it is used in different applications. Only minor differences in both bending strength and the modulus of elasticity were obtained for acetylated wood when compared with unmodified wood, and can, for practical applications, be considered unaltered. LÄS MER

  4. 3. Cementitious properties of steelmaking slags

    Författare :Daniel Adolfsson; Bart Blanpain; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Sammanfattning : The present study is directed towards the use of steelmaking slags as raw material for sulphoaluminate belite cement (SAB). Another important objective was to characterise the cementitious properties of phases in ladle furnace slag (LFS) specifically the calcium aluminates. LÄS MER

  5. 4. Thermodynamic Modelling of Electrolyte Solutions with Application to the Pulp and Paper Industry

    Författare :Anders Jaretun; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Potassium; Chloride; Chemical recovery; Leaching; Crystallization; Kraft pulping; Non-process elements; Solubility; Local composition; Excess properties; Osmotic coefficient; Electrolytes; Activity coefficient; Wood; pulp and paper technology; Pappers- och massateknik;

    Sammanfattning : A thermodynamic model for electrolyte solutions has been derived for binary and multicomponent solutions up to very high molalities. The model was extensively tested on 163 binary aqueous electrolyte systems up to very high molalities, and the results show that the model represents mean ionic activity coefficients and osmotic coefficients very accurately. LÄS MER

  7. 5. Nanostructured TiN/ZrAlN and HfAlN Thin Films : Effect of Structure on Mechanical Properties

    Författare :Marcus Lorentzon; Naureen Ghafoor; Jens Birch; Johanna Rosén; Peter Hedström; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Transition metal nitrides are a remarkable group of ceramic materials that offer exceptional properties such as high hardness, low tribological wear, excellent thermal stability, and high oxidation resistance. Alloys such as TiN, CrN, VN, ZrN, and HfN have been identified as ideal candidates for protective coatings on cutting tool inserts in the metal processing industry. LÄS MER