|
|
The Effect of the Time of Bird Droppings Remaining on the Vehicle Body on the Damage Degree of the Paintwork
Bílek, Tomáš ; Kaluža, Zdeněk (referee) ; Bradáč, Albert (advisor)
This diploma thesis deals with the issue of the degree of damage done to the vehicle‘s body paint varnish by bird droppings; with respect to the influence of the pollution time on the thickness of the layer of lacquer. The first chapter deals with the importance of varnish and other layers of body protection, types of body varnish damage, painting technology, lacquer defects, bird droppings and its effects on the varnish of the vehicle‘s body. The second chapter is dedicated exclusively to the description, planning and measurement of the coated layers on the vehicle’s body contaminated with bird feces.
|
|
|
Barrier properties of varnishes for protection of photographs
Lokotschová, Radka ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
In this diploma thesis the basic principles of inkjet print, ink composition, print media and degradation mechanisms of ink dyes are summarized. The thesis deals with study of varnish barrier properties in coloured inkjet prints. Permeability of water vapour and oxygen (parts of atmosphere) depending on different coatings are tested there. In addition the influence of ozone on degradation of dyes was studied, while ozone was permeating through barrier varnish layer of inkjet print. Ozone plays an important role in degradation processes of the inkjet prints and it also causes a gas-fading. Concentrations of acting ozone were established by iodometric titration. Simultaneously kinetics of degradation of Orange 7 was studied on indicator papers.
|
|
|
Ozone gas-fading of photographs
Védlová, Petra ; Kozáková, Zdenka (referee) ; Veselý, Michal (advisor)
This bachelor thesis deals with principels of inkjet printing, ink composition and print media. The paper also focuses on stability of inkjet prints, degradation of inks by ambient impacts, mechanisms of such degradations and protection against degradation. The experimental section examines the impact of ozone on gas-fading of injekt prints, which is one of the most important factors by degradation of dyes for both clasic prints and prints with protective varnish. In conclusion two methods for assessing dye degradation – colorimetric (by calculating the volume of the color gamut) and densitometric (by calculating optical densities) – are investigated and compared.
|
|
|
Surface treatment of car body
Talafa, Michal ; Kandus, Bohumil (referee) ; Kubíček, Jaroslav (advisor)
In this work, the theory describes modifications to the car bodies, especially their finishes. Thus pretreatment before the coating lacquer layers. There are described the types of pre-treatment such as degreasing and corrosion protection. Also deals with the coating, and their functions and applications to the car body. Since the body does not consist only of metal, there is another part of the work focused on the plastics that are used and their painting.
|
|
|
Vliv mytí na degradaci laku vozidla a jeho hodnocení
Duda, Stanislav
This thesis deals with the problematics of varnish degradation due to maintanance of a car or more precisely due to washing of a car bodywork and searching for a gentle washing of a car. The first section of this thesis discusses the creation of a protection layer of the car bodywork or types of varnishing, particular layers of varnish and additional products enhancing the qualities of car varnish. Second part of thesis analyses the measuring and evaluation of the state of varnish layers and uses the results for valuation of estetical and functional advantages and disadvantages. In third part we deal with description and categorisation of types and technologies of car washing. Fourth part focuses on experimentation and comparison of varnish degradation due to selected types of car washing using tests simulating real conditions of regular service. Particularly we evaluate portal washing units and hand washing. Consequently we subjectively and objectively analyse all the information and finaly we project this information to time and economical perspective.
|
|
|
Metody ochrany karoserií vozidel proti korozi
Hána, Daniel
This thesis deals with corrosion and corrosion resistance of steel parts of motor vehicles. First part describes in depth general issues of degradation corrosion systems, with emphasis on clear classification of corrosion types and anti-corrosion treatments. The next part defines particular anti-corrosion treatments. This part is followed by a concrete description of coachwork anti-corrosion treatment. Here the attention is paid to those anti-corrosion treatments that are currently most used by leading motor vehicles manufacturers.
|
guest ::
