Search for dissertations about: "foaming"
Showing result 1 - 5 of 43 swedish dissertations containing the word foaming.
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1. Foaming of cellulose derivatives and hemicellulose-containing materials
Abstract : Fossil-based polymeric foams are important materials due to their good mechanical properties relative their low density, the low price and the possibility for large-scale production. They are widely used in cushioning, absorbing and insulation applications. There are however a few disadvantages with these foamed products. READ MORE
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2. Foaming of Some Cellulose Derivatives - Initial Studies
Abstract : Fossil-based polymeric foams, based on polymers such as polystyrene and polyurethane, are important and widely employed materials due to their good mechanical properties relative their low density, the low price and the possibility for large-scale production. There are however a few disadvantages with these foamed products. READ MORE
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3. On the Dielectric Losses of Polyethylene at Medium and High Frequencies
Abstract : AbstractAs mobile communication moves from 3G to 4G, the bandwidth used will be extended from 2 GHz to 5 GHz. The propagation loss is related to the 2.6:th power of frequency, thus a large increase in power consumption may be expected. READ MORE
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4. Flow, expansion and processing behaviours of gas-containing filled polyethylene
Abstract : The utilization of fillers in polymeric materials has exhibited a substantial growth during the last decades. Chalk (calcium carbonate) and glass fibres are two common examples of such fillers. These fillers/reinforcing elements are used in order to reduce the cost of material and change its physical (mechanical) properties. READ MORE
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5. Surface Chemistry Studies on Surfactant Properties Relevant to Flotation De-inkin
Abstract : The objective of this work was to investigate thephysico-chemical properties of common de-inking chemicals. Thishas been done by means of equilibrium and dynamic surfacetension measurements as well as foaming experiments. READ MORE
