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Potting Compounds for Power Electronics
Štajner, David ; Červinka, Dalibor (referee) ; Vašíček, Adam (advisor)
Potting compounds are often used in electrotechnics to protect the electronics from the adverse effects, improves its insulating properties and helps to improve the heat transfer from the embedded devices in the surroundings. Embedding electronics into encapsulants extend the field of application. Such electronics can then be used in wet, dusty, corrosive or otherwise harsh environments.
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Thermal aging of nanocomposites
Janíček, Martin ; Rozsívalová, Zdenka (referee) ; Polsterová, Helena (advisor)
This thesis deals with issues of properties of nanocomposites and it´s heat aging. In the first part there are theoretically analysed some of the basic therms connected with nanocomposites. Also there are outlined basic methods of production of these matherials. The most important is specification of individual properties when bigger attention is gived to electrical properties. Practic part deals with heat aging of samples of nanocomposites filled with nanoparticles Al2O3. There was monitored impact of time of aging on values of internal resistance, dissipation factor and relative permitivity.
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Production of fibreglass laminate parts
Nenov, Stanislav Stojanov ; Kalivoda, Milan (referee) ; Mouralová, Kateřina (advisor)
Bachelor´s thesis is specialised in production of the fiberglass part in the company Composite Components, a. s. In the introductory part the company and shortly its history and production is introduced. In the next parts composites and their dividing are described with specialisation in input materials for fiberglass production and different production technologies. Concrete producing part is described from the period of recieving the data for production of the model and moulds to production of the part. With modification of the production technology production effectiveness is achieved, which is reviewed in the technical-economic evaluation.
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Replacing of metal sheets with laminates
Ulrich, Josef ; Němec, Karel (referee) ; Molliková, Eva (advisor)
The aim of the bachelor´s thesis is composite material, specifically fiberglass. In the first part of this thesis fiberglass is described, their composition, chosen production technology and possibility of use. Mechanical properties and its advantages of fibreglass are compared with metal sheets. Fibreglass is described on example of particular component.
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Modern treatments by powder paints
Turek, Tomáš ; Kovář, Petr (referee) ; Kubíček, Jaroslav (advisor)
The thesis deals with the process of powder coating paint, a description of the individual steps and types of used equipment. Thesis also includes the distribution of powder paints and overview of basic information, color chart systems and the description of color tone perception. At the end of the thesis are summary of quality standards of deposited surface and technologic process of coating using in the powder coating in paintshop.
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Properties of Fiber Reinforced Plastics
Jastrzembská, Alena ; Petránek, Vít (referee) ; Bodnárová, Lenka (advisor)
This thesis deals with the theoretical part of raw materials, production and properties of composite materials with fiber reinforcement and polymer matrix. It also gives a brief overview of selected prominent Czech and foreign producers of composite materials with polymer matrix and fiber reinforcement. The practical section deals with testing the durability of selected composite profiles immersion in aggressive environments and testing of compressive strength.
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Výzkum a vývoj zpracování obnovitelných zdrojů na biopaliva a chemické polotovary
Výzkumný ústav organických syntéz a.s., Rybitví ; Pokorný, Michal
Zpráva studuje možnosti využití alkylesterů jako ekologicky přijatelných reaktivních ředidel. Je sledována možnost náhrady těkavých, hořlavých alkydových pryskyřic (xylen, lakový benzín) za rozpouštědla reaktivní (alkylestery nenasycených mastných kyselin) a dále náhrady reaktivního rozpouštědla styrenu metylestery nenasycených mastných kyselin modifikovaných cyklopentadienem. Byla studována katalytická oxidace sekundárních hydroxylových skupin glycerolu. Bylo navrženo technologické zařízení pro rafinaci glycerolu na Pharma kvalitu. Byl připraven návrh technologických linek výroby metylesteru s kapacitou 10 a 25 kt/rok.
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