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Polymer matrix based on epoxydized oils
Kvasničková, Lucie ; Tocháček, Jiří (referee) ; Přikryl, Radek (advisor)
The theoretical part of this bachelor thesis deals with a current state in the field polymer matrix based on vegetable oils and their epoxidation. Subsequently it deals with epoxy resins – particularly their structure, crosslinking and a curing. The experimental part of this research focuses on the amine curing of epoxy resins. A curing of epoxidized soybean oil with various amine curing agents was tested and also a curing of a blend containing comercial epoxy resin and epoxidized soybean oil. Testing pieces were prepared from selected mixtures and a tensile test was performed on them.
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Polymers based on epoxydized oils
Zálešáková, Romana ; Tocháček, Jiří (referee) ; Přikryl, Radek (advisor)
The aim of the bachelor’s thesis is study of materials based on epoxidized vegetables oils, production of test specimens of selected matrix and assessment of its mechanical and thermal properties. The theoretical part deals with epoxy resins, their structure and curing. Then it deals with general description of vegetable oils and their epoxidization. Experimental part describes curing of epoxy resin by hardeners, based on carboxylic acid anhydrides. Curing epoxidized soybean oil was tested with different anhydride hardeners and curing the mixture with commercial epoxy system. Test specimens were prepared from selected mixtures. Specimens were studied by tensile, bending and impact test, TGA and DMA.
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Development of a catalyst for epoxidation of methyl esters
Pham, Tien Thanh ; Krajčovič, Jozef (referee) ; Kučerík, Jiří (advisor)
The diploma thesis is focused on the study of heterogeneous catalysts in the epoxidation of rapeseed oil methyl ester. Epoxides of these components have applications in cutting oils, where they could replace hitherto used oils from fossil sources. Epoxidation is a catalyzed reaction using homogeneous catalysts based on mineral acids. However, they have corrosive properties and they are poorly separated after the reaction. However, this work is focused on the study of heterogeneous catalysts in epoxidation. The reaction products were analyzed by GC, SIMDIS and ATR-FTIR. Advanced analytical methods such as ICP-OES, XRF, XRD, SEM, mercury porosimetry and TPR-H2 were used to determine the composition, structural, textural and reducing properties of the catalysts.
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Development of a catalyst for epoxidation of methyl esters
Pham, Tien Thanh ; Krajčovič, Jozef (referee) ; Kučerík, Jiří (advisor)
The diploma thesis is focused on the study of heterogeneous catalysts in the epoxidation of rapeseed oil methyl ester. Epoxides of these components have applications in cutting oils, where they could replace hitherto used oils from fossil sources. Epoxidation is a catalyzed reaction using homogeneous catalysts based on mineral acids. However, they have corrosive properties and they are poorly separated after the reaction. However, this work is focused on the study of heterogeneous catalysts in epoxidation. The reaction products were analyzed by GC, SIMDIS and ATR-FTIR. Advanced analytical methods such as ICP-OES, XRF, XRD, SEM, mercury porosimetry and TPR-H2 were used to determine the composition, structural, textural and reducing properties of the catalysts.
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Polymers based on epoxydized oils
Zálešáková, Romana ; Tocháček, Jiří (referee) ; Přikryl, Radek (advisor)
The aim of the bachelor’s thesis is study of materials based on epoxidized vegetables oils, production of test specimens of selected matrix and assessment of its mechanical and thermal properties. The theoretical part deals with epoxy resins, their structure and curing. Then it deals with general description of vegetable oils and their epoxidization. Experimental part describes curing of epoxy resin by hardeners, based on carboxylic acid anhydrides. Curing epoxidized soybean oil was tested with different anhydride hardeners and curing the mixture with commercial epoxy system. Test specimens were prepared from selected mixtures. Specimens were studied by tensile, bending and impact test, TGA and DMA.
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|
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Polymer matrix based on epoxydized oils
Kvasničková, Lucie ; Tocháček, Jiří (referee) ; Přikryl, Radek (advisor)
The theoretical part of this bachelor thesis deals with a current state in the field polymer matrix based on vegetable oils and their epoxidation. Subsequently it deals with epoxy resins – particularly their structure, crosslinking and a curing. The experimental part of this research focuses on the amine curing of epoxy resins. A curing of epoxidized soybean oil with various amine curing agents was tested and also a curing of a blend containing comercial epoxy resin and epoxidized soybean oil. Testing pieces were prepared from selected mixtures and a tensile test was performed on them.
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