Search for dissertations about: "natural rubber"

Showing result 1 - 5 of 76 swedish dissertations containing the words natural rubber.

  2. 1. Modelling of the Fletcher-Gent effect and obtaining hyperelastic parameters for filled elastomers

    Author : Rickard Österlöf; Leif Kari; Per-Erik Austrell; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; filled elastomers; natural rubber; carbon black; Fletcher-Gent effect; Payne-effect; finite strain; hyperelastic;

    Abstract : The strain amplitude dependency , i.e. the Fletcher-Gent effect and Payne effect, and the strain rate dependency of rubber with reinforcing fillers is modelled using a modified boundary surface model and implemented uniaxially. READ MORE

  4. 2. When the Rubber Meets the Road -Ecotoxicological Hazard and Risk Assessment of Tire Wear Particles

    Author : Anna Wik; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tire wear; tire particles; rubber; leaching tests; ecotoxicity tests; Daphnia magna; Ceriodaphnia dubia; Pseudokirchneriella subcapitata; Danio rerio; toxicity identification evaluation; detention ponds; hazard assessment; risk assessment;

    Abstract : Large amounts of rubber particles are dispersed into the environment due to tire wear. The rubber contains a wide range of chemicals, including several of environmental concern. The purpose of this th.. READ MORE

  5. 3. Electrical properties of carbon black-filled polymers

    Author : Per Bengtsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PTC; positive temperature coefficient; chloroprene; percolation; rubber; current noise; conducting fillers; thermal noise; electrical properties; 1 f noise; carbon black; polythylene;

    Abstract : .... READ MORE

  6. 4. Effect of solvents during material treatment applications : tuning hydrophilicity of silicone rubber and drug loading in mesoporous silica

    Author : Anna Hillerström; Jan van Stam; Lennart Piculell; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Solvents; liquid carbon dioxide; Interpenetrating Polymer Network IPN ; silicone rubber; hydrophilic; phase domains; mesoporous silica; ibuprofen; adsorption isotherms; release; Kemi; Chemistry;

    Abstract : Choosing the right solvent is critical for many industrial applications. A useful property for selection of solvents is their solubility parameters. This concept of solubility parameters is central to this thesis and has been used in two different case studies of material treatment applications. READ MORE

  7. 5. Additive-Driven Improvements in Interfacial Properties and Processing of TMP-Polymer Composites

    Author : Seyedehsan Hosseini; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; molybdenum disulfide; magnesium stearate; thermomechanical pulp; alkyl ketene dimer; friction; rheology;

    Abstract : Efforts to address environmental concerns have resulted in new regulations designed to plan the reduction of plastic and synthetic polymer usage, necessitating the search for sustainable natural alternatives with comparable cost-effectiveness and mechanical performance. Thermomechanical pulp (TMP) fibres are one of the most affordable natural fibres that have no chemical refining in production, production have a high yield of 90-98% and TMP fibres have been demonstrated to improve the mechanical characteristics (strength, stiffness and toughness) of wood-polymer composites (WPCs) compared to the pure polymer. READ MORE