Sökning: "TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Materials chemistry"

Visar resultat 11 - 15 av 32 avhandlingar innehållade orden TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Materials chemistry.

  1. 11. Manufacturing and Characterisation of Conductive and Piezoelectric Textile Fibres

    Författare :Erik Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrical conductivity; polyethylene; polypropylene; Graphite nanoplatelets; smart textiles.; melt spinning; piezoelectric fibres; rheology; conductive fibres; carbon black; graphene; PVDF;

    Sammanfattning : This thesis explores the manufacturing and characterisation of melt spun electrically conductive polymer nanocomposites and piezoelectric textile fibres. Potential applications of these fibres are for example textiles with heating and sensor capabilities. LÄS MER

  3. 12. Physical vapor deposition and thermal stability of hard oxide coatings

    Författare :Ludvig Landälv; Per Eklund; Emmanuelle Göthelid; Björn Alling; Marcus Morstein; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The state-of-the-art tools for machining metals are primarily based on a metal-ceramic composite (WC-Co) coated with different combinations of carbide, nitride, and oxide coatings. Combinations of these coating materials are optimized to withstand specific wear conditions. LÄS MER

  4. 13. ELECTRON BEAM MELTING OF ALLOY 718 - POWDER RECYCLING AND ITS EFFECT ON DEFECT FORMATION

    Författare :Hans Gruber; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; powder recycling; electron beam melting; oxide defects; Alloy 718; defect formation; powder degradation; additive manufacturing; non-metallic inclusions;

    Sammanfattning : As for any production process, the performance of additively manufactured components is ultimately dependent on the quality of the feedstock material. Consequently, for critical components, the feedstock needs to be carefully controlled to assure a stable and reliable quality. LÄS MER

  5. 14. Voltage Stabilizers: From Design to Synthesis, Processing and Electrical Characterization

    Författare :Markus Jarvid; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Polyethylene; Degradation; XLPE; Electrical treeing; Voltage stabilizer; Cable; Insulation;

    Sammanfattning : Voltage stabilizers are additives capable of inhibiting electrical treeing; a degradation mechanism for insulation materials subjected to strong divergent electric fields. The intended use is in cross-linked polyethylene (XLPE) high voltage power cable insulation where minute defects in the manufacturing process can give rise to the conditions needed for the initiation of treeing, which in the worst case scenario leads to failure of the insulation system with blackouts and expensive repairs as a consequence. LÄS MER

  7. 15. Design of Cellulose-Based Electrically Conductive Composites: Fundamentals, Modifications, and Scale-up

    Författare :Karishma Jain; Lars Wågberg; Per A. Larsson; Davide Beneventi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Cellulose nanofibrils; PEDOT:PSS; chemically-modified cellulose fibers; fundamental interactions; bioelectronics; energy storage; conductive paper production; large-scale production; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Modern demand for consumer electronics is fueling the generation of 'E-waste.' Furthermore, theraw materials and manufacturing methods used in the fabrication of electronics are not sustainable. LÄS MER