|
|
Optimizing requirements for wood coatings
Bednářová, Ilona ; Petránek, Vít (referee) ; Vaněrek, Jan (advisor)
The work deals with wood coating systems. It is focused on the theoretical division of paints due to different aspects, moreover on testing of wood coating systems. In the practical part of the work, the experimental work regarding the influence of weather conditions onto durability of different wood coatings system was preceded. They were compared two different coatings within the basic tests in different environments.
|
|
|
Vliv barevného odstínu pigmentové povrchové úpravy na teplotu povrchu nábytkových dílců
Plodíková, Lucie
The bachelor thesis based on experimental measurements of previously prepared samples. The samples are made of beech plywood. They are finished by pickling with various pigments and exposed to daylight in exterior. The thesis investigates influence of colour shade of pigment surface finishing on wood furniture to the physic-mechanical properties of surface finishing but mainly to the temperature of finished surface. Other properties examined are hardness, adhesion, and colour shade, degree of damage and abrasion resistance. The result of thesis is evaluation and description of achievements with the contribution for practice and new findings.
|
|
|
Povrchová úprava stavebně-truhlářských výrobků s krátkou životnosti
Suchý, Michal
This diploma thesis deals with the design system of finishing of structural wood construction with a short lifetime and performing tests of physical and mechanical properties. The system of finishing is based on the used adhesives. Three different kinds of adhesives (UF, MUF, PVAc) were used to test. Tests were conducted by technical standards ČSN, EN, ISO and BS. The aim of the study was to determine the properties and durability of the proposed surface treatment and to evaluate the possibility of using it for practice. Tests were conducted: surface hardness, adhesion to substrates, resistance to scratching, to steam, cold liquid, falling steel ball, abrasion and attrition. Furthermore, the measured sheen, color changes and light fastness.
|
|
|
Povrchová úprava dřevěných fasád
Slováčková, Hana
This thesis deals with monitoring changes in surface finishing of spruce and larch wood in outdoors. Using outdoor weathering tests the properties of two kinds of paints were tested by - a thin glaze and oil paint, two shades from each. In this work, the influence of the composition of the paint on its durability and light fastness was examined. This issue is closely related to the resistance of coatings to weathering, including solar radiation (UVA and UVB), atmospheric oxygen, relative humidity, temperature, precipitation, biological attack, chemical impacts (air pollution, acid rain, etc.).
|
|
|
Povrchová úprava dětských hraček
Sochová, Irena
The bachelor thesis work analyses the range of wooden carved toys and surface finishing that is currently manufactured in the Czech Republic. The first part deals with the analysis of the current trend of finishing wooden carved toys. In the second part safety and environmental requirements for children's carved toys are defined. Then it examines the physico-mechanical and ecological properties of finished wooden segments used in the manufacture of children's carved toys. And last but not least the laboratory tests and measurements of physico-mechanical and ecological properties of finished surfaces of children's carved toys are being performed. And the result of the thesis work is evaluating the outcomes of the tests and measurements and comparison of the properties of finished surfaces according to ČSN and EN applicable standards and determining the proper properties of finished surfaces for children's toys.
|
|
|
Ověření vlastností nátěrových hmot v rohových spojích okenních rámů
Hadačová, Jana
The thesis focuses on a verification of coating quality in the area of construction joints of a window frame and a casement. Individual samples of eight windows were long term exposed to laboratory conditions that simulate extreme weather conditions during all climatic periods. The main aim of the partial examinations is to obtain information on the quality of different coatings, especially on their adhesion, elasticity, and resistance to temperature changes. The practical part of the thesis is dealing with assessing and documentation of sample states, especially their corner joints, at the beginning of the experiment, as well as during and after the testing. All changes are thoroughly recorded as evidenced by the detailed visual documentation. In the final part, the tests are evaluated with emphasis on frequent defects that occur in practice. The issue of window surface finishes is still an ongoing topic, many problems often occurring in few months after placing windows into the building must be dealt with.
|
|
|
Dokončování thermowoodu nátěrovými hmotami vytvrzovanými UV zářením
Luňáček, Martin
Bachelor thesis deals with the finishing coating with UV curing on heat-treated wood samples. Finishing the application of a transparent on based polyacrylateand should withstand the requirements for building - joinery production. The aim of this study is to determine the procedure for finalizing the transparent coating cured using UV radiation on the surface of thermowood.
|
|
|
Vliv pojiv nátěrových hmot na kvalitu pigmentové povrchové úpravy ve vysokém lesku
Vávra, Lukáš
The bachelor thesis deals with the binders coatings influence on the quality of pigment surface treatment in high gloss of materials based on wood and analyzing factors affecting required quality. Selection of proper binders coatings is the most important for final result. The part of the theoretical thesis covers the samples preparation, depending on base coat and base material used and surface treated in high gloss and subsequent assessment of their properties and comparison.
|
|
|
Stanovení světlostálosti různých druhů nátěrových systémů aplikovaných na vybrané druhy tropických dřev
Fricová, Michaela
This master thesis deals with the application of various types of surface treatments on selected tropical wood species and the subsequent change of colour due to the effect of natural and simulated UV radiation. Measurements were performed on the following three species: zebrano (Microberlinia brazzavillensis), panga panga (Millettia Stuhlmannii) and african padouk (Pterocarpus soyauxii). As surface treatment were used water-based, polyurethane, oil and solvent-based paint. Samples were exposed to simulated UV radiation. The total duration of radiation was 168 hours. After that the colour changes delta E* were measured by using a spectrophotometer. The aim was to compare the different paints used on all woods and their colour change. The thesis also includes research of light permanency of coating exposed to natural UV radiation.
|
|
| |
guest ::
