Search for dissertations about: "EPDM"

Showing result 1 - 5 of 6 swedish dissertations containing the word EPDM.

  1. 1. Long-term performance of polymeric materials in nuclear power plants

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Payam Pourmand; KTH.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; EPDM; thermal ageing; radiation ageing; portable NMR spectroscopy; modulus profiling; condition monitoring; plasticizer migration; Kemi; Chemistry;

    Abstract : Access to energy is crucial for modern societies to function sustainably. In addition, nuclear power has for a long time been considered a reliable source of energy. However, the majority of nuclear power plants are reaching the end of their service lifetimes, and it is crucial to verify that every component can withstand the added service time. READ MORE

  2. 2. Electric Charges on Insulator Surfaces and their Influence on Insulator Performance

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Hans Sjöstedt; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EPDM; silicone rubber; material properties; surface potential measurements; outdoor insulation materials;

    Abstract : AbstractPolymeric materials used in high voltage insulation systems are subjected to electric fields which can be strong enough to initiate electrical discharges in the surrounding gas environment. Generated electrical charges may be deposited on polymer surfaces and alter electric field distributions, thus affecting insulation performance and their corresponding breakdown characteristics. READ MORE

  3. 3. Imaging chemiluminescence applied to oxidation of rubber materials and polyamide

    University dissertation from Institutionen för polymerteknologi

    Author : Gustav Ahlblad; KTH.; [1998]
    Keywords : ;

    Abstract : In this thesis the heterogeneous nature of thermal oxidationof polymer materials have been investigated by imagingchemiluminescence (KL). The issues of oxidation depth profilesand physical spreading of oxidation in rubbers materials andpolyamide have been addressed. READ MORE

  4. 4. Morphology of Polymers - Development of Electron Microscopy Methods

    University dissertation from Helen Hassander

    Author : Helen Hassander; Lund University.; Lunds universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SEM; TEM; polymer; electron microscopy; Polymer technology; biopolymers; Polymerteknik;

    Abstract : Most polymeric materials used today are not simple homopolymers, but consist of more than one polymer, which lead to morphologies of different length scale and shape. It is important to receive knowledge of the morphologies because the properties of the materials change depending on the structure. READ MORE

  5. 5. Modelling electrical properties of composite materials

    University dissertation from Stockholm : Elektrotekniska system

    Author : Eva Mårtensson; KTH.; [2003]
    Keywords : ;

    Abstract : Composite field grading materials are used to avoid stressconcentrations in high voltage applications such as cableaccessories and generator or motor end windings. The compositematerials consist of an insulating matrix filled with suitableconducting or semi-conducting particles. Silicon carbide (SiC)powder is one such filler that is being employed. READ MORE