Sökning: "Blends"

Visar resultat 21 - 25 av 191 avhandlingar innehållade ordet Blends.

1. 21. Novel Thermoplastic Material Concepts for High Voltage Cable Insulation - Engineering Immiscible Blends for a Sustainable Future

   Författare :Yingwei Ouyang; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polypropylene; polymer blends; thermoplastic; copolymer; high-voltage power cable insulation; polyethylene;

   Sammanfattning : To cope with our growing demand for energy in a sustainable way, efficient long-distance power transmission via high voltage direct current (HVDC) cables is crucial – these cables facilitate the integration of renewable energy into our power networks. For reliable and efficient power transmission, underground and undersea cables require robust insulation materials that possess a high level of mechanical integrity, a low direct-current (DC) electrical conductivity and a high thermal conductivity at the elevated temperatures experienced during cable operation. LÄS MER

3. 22. Morphology and Properties of Polymer Blends -Polypropylene and a Thermoplastic Elastomer -Polypropylene/Polyamide (1/1) and a Modified Thermoplastic Elastomer

   Författare :Bertil Ohlsson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reactive Processing; Compatibilization; Thermal Properties; Mechanical Properties; Morphology; SEBS; Polyamide; Polymer Blends; Polypropylene; Polymer technology; biopolymers; Polymerteknik;

   Sammanfattning : The search for polymeric materials with new property profiles has stimulated a great interest into polymer blends and reactive processing. During recent years many new blends have reached the market. LÄS MER

4. 23. Poly(Alkylthiophene) Blends Processing, Morphology and Conductivity

   Författare :Nils Ljungqvist; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Intrinsically conducting polymers may be an attractive alternative instead to polymers with conducting fillers. The aim of the present work was to study the potential of the processable conducting polymer poly(3-alkylthiophene) as well as possible problems related to its processing. LÄS MER

5. 24. Devlopment and relaxation of orientation in liquid crystalline polymers : transport properties of liquid crystalline polymer blends

   Författare :Göran Wiberg; KTH; []
   Nyckelord :;

   Sammanfattning : In this thesis different types of liquid crystallinepolymers have been investigated with respect to build up andrelaxation of orientation. The potential of making new barriermaterials using liquid crystalline polymer blends was alsostudied. LÄS MER

7. 25. Experimental evaluation of renewable drop-in fuel blends for compression ignition engines

   Författare :Josefine Preuss; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compression Ignition Engine; Renewable fuels; Particle emissions; long-chain alcohol blends;

   Sammanfattning : Driven by the need to reduce greenhouse gas emissions while meeting the growing demand for mobility, the transport sector is shifting towards more sustainable and less polluting energy sources. Although vehicle electrification is advancing, it will take decades for electric vehicles to completely replace all current vehicles powered by internal combustion engines. LÄS MER