Sökning: "Superhydrophobic coating"

Hittade 4 avhandlingar innehållade orden Superhydrophobic coating.

  1. 1. Hydrophobic and superhydrophobic coatings for corrosion protection of steel

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Lina Ejenstam; KTH.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Superhydrophobic coating; hydrophobic coating; corrosion protection; contact angles; electrochemical measurements; surface characterization; Kemi; Chemistry;

    Sammanfattning : Since metals in general, and steels in particular, are vital construction materials in our modern society, the corrosion protection of said materials is of great importance, both to ensure safety and to reduce costs associated to corrosion. Previously, chromium (VI) and other harmful substances were effectively used to provide corrosion protection to steel, but since their use was heavily regulated around year 2000, no coating has yet been developed that, in a fully satisfactory manner, replaces their corrosion protective properties. LÄS MER

  2. 2. Superhydrophobic coatings of wax and polymers sprayed from supercritical solutions

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Louise Ovaskainen; KTH.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; superhydrophobic coatings; polymer; wax; supercritical carbon dioxde; RESS; Chemical Engineering; Kemiteknik;

    Sammanfattning : The possibility of using supercritical carbon dioxide (scCO2) as the primary solvent in a spray process for producing superhydrophobic surfaces have been examined in this work. Using scCO2 as solvent will have considerably lower environmental impact compared to an organic solvent since scCO2 is considered a green solvent as it is non-toxic, non-flammable and recyclable. LÄS MER

  3. 3. Fundamentals of Wetting and Mechanical Durability of Superhydrophobic Coatings

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Pontus Olin; KTH.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : In paper I the friction between three different superhydrophobic surfaces and water drops were investigated using high‑speed video. The surfaces were two based on a hydrophobic wax and the third was the leaf of a Lotus (Nelumbo Nucifera). The acceleration of water drops was measured as a function of drop size and surface inclination. LÄS MER

  4. 4. Experimental Studies on CO2 Capture Using Absorbent in a Polypropylene Hollow Fiber Membrane Contactor

    Detta är en avhandling från Västerås : Mälardalen University

    Författare :Yuexia Lu; Mälardalens högskola.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CO2 capture; Simultaneous removal of CO2 and SO2; Hollow fiber membrane contactor; Membrane gas absorption; Partial wetting; Surface modification; CO2-avskiljning; samtidig avskiljning av CO2 och SO2; ihålig fiber; membran; gas absorption; vätning; ytmodifiering; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : In recent years, membrane gas absorption technology has been considered as one of the promising alternatives to conventional techniques for CO2 capture due to its favorable mass transfer performance. As a hybrid approach of chemical absorption and membrane separation, it exhibits a number of advantages, such as operational flexibility, compact structure, high surface-area-to-volume ratio, linear scale up, modularity and predictable performance. LÄS MER