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000050673 1001_ $$0P:(DE-Juel1)VDB59815$$aKucharczyk, Pawel$$b0$$eCorresponding author$$uFZJ
000050673 245__ $$aQualifizierung von Polysiloxanen für die langzeitstabile Konditionierung radioaktiver Abfälle
000050673 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2005
000050673 300__ $$aIV, 152 p.
000050673 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis
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000050673 4900_ $$0PERI:(DE-600)2414853-2$$823771$$aBerichte des Forschungszentrums Jülich$$v4195$$x0944-2952
000050673 502__ $$aAachen, Techn. Hochsch., Diss., 2005$$bDr. (FH)$$cTechn. Hochsch. Aachen$$d2005
000050673 500__ $$aRecord converted from VDB: 12.11.2012
000050673 520__ $$aAt present German policy envisages interim storage of all radioactive waste (for approximately 30 years) until a final repository is available. This therefore leads to higher standards for storage containers. Silicone elastomers (polysiloxanes), materials on the basis of silicon and oxygen with organic substituents, have various physical and chemical properties and seem to be suitable for the long-term storage of low- and intermediate-level radioactive waste. The aim of the present work is the qualification of a new coating material for storage containers. The use of polysiloxanes in other applications was also investigated. An important criterion for the coating is the simplicity of its application. Moreover, it should also have a high adhesion on steel as well as providing protection against corrosion. These properties were investigated for different polysiloxanes. The spraying tests showed that polysiloxane material with a viscosity of up to 45000 mPas could be applied by the airless spraying method. An elastic coating was produced which could ensure protection against mechanical impacts. In the framework of water vapour experiments, a very high diffusion constant was determined. The corrosion test confirmed that the polysiloxane coating provided only insufficient corrosion protection if the sample was in contact with water and water vapour at the same time. This problem was solved by using an additional priming coat of 60 $\mu$m zinc paint. The adhesion test showed that polysiloxanes have different levels of adhesion. The best adhesion was determined for condensation-cured silicones. The addition-cured materials had a lower adhesion, which was improved by the application of a priming coat. The outcome of these investigations is a wide spectrum of applications for polysiloxanes which can be used as firmly adhering coatings or removable decontamination layers.
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000050673 9201_ $$0I:(DE-Juel1)VDB182$$d31.12.2006$$gISR$$kISR$$lInstitut für Sicherheitsforschung und Reaktortechnik$$x0
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