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Mechanical response of long-fiber-reinforced polymer composite
Škriniarová, Nina ; Prokeš, Jan (referee) ; Čech, Vladimír (advisor)
This diploma thesis is focused on monitoring of mechanical response of long-fiber reinforced polymer composite. Main part of this thesis was preparation of long-fiber reinforced composite specimens, on which matrix was reinforced by commercially sized glass fibers. For comparison of properties were prepared specimens reinforced by unsized glass fibers. Apart from preparing specimens reinforced by long glass fibers were prepared specimens contains long carbon fibers. For evaluation of mechanical response of the prepared composite specimen were used flexural test and short beam shear test. Mechanical response was evaluated with universal testing machine ZWICK Z010 and data were processed in OriginPro 8 program. Thanks to evaluation of the mechanical response of the prepared specimens was assessed adhesion to fiber-matrix interface. By examining the mechanical response or adhesion can be assessed efficiency of commercial fiber surface treatment and so standardize measurement to compare other options of surface treatments.
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Effect of preparation conditions on the structure and properties of hybrid light curing composites
Škriniarová, Nina ; Ing. Vladimír Pavelka. Ph.D. (referee) ; Jančář, Josef (advisor)
The purpose of this thesis was to implement and evaluate series of experiments focused on the impact of mixing conditions and component dispensing on the structure and properties of hybrid polymer composite materials for resistant dental fillings. There were suggested some preparation methods and subsequently some mechanical properties of prepared samples were measured. Short non-formable polymer fibers in combination with filler particles of various particle sizes were added into the matrix. As matrix a polymer, light curable monomer mixture based on urethandimethacrylate and dodecandioldimethacrylate was used. Tensile deformation curves of prepared samples were measured. Morphology of prepared composites was observed by surface fractography using scanning electron microscopy (SEM). Samples were evaluated by comparing of tensile curves and morphology observed on SEM slides. The best way of component mixing and dispensing was evaluated based on comparison of experiment results and properties predicted by existed models.
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Mechanical response of long-fiber-reinforced polymer composite
Škriniarová, Nina ; Prokeš, Jan (referee) ; Čech, Vladimír (advisor)
This diploma thesis is focused on monitoring of mechanical response of long-fiber reinforced polymer composite. Main part of this thesis was preparation of long-fiber reinforced composite specimens, on which matrix was reinforced by commercially sized glass fibers. For comparison of properties were prepared specimens reinforced by unsized glass fibers. Apart from preparing specimens reinforced by long glass fibers were prepared specimens contains long carbon fibers. For evaluation of mechanical response of the prepared composite specimen were used flexural test and short beam shear test. Mechanical response was evaluated with universal testing machine ZWICK Z010 and data were processed in OriginPro 8 program. Thanks to evaluation of the mechanical response of the prepared specimens was assessed adhesion to fiber-matrix interface. By examining the mechanical response or adhesion can be assessed efficiency of commercial fiber surface treatment and so standardize measurement to compare other options of surface treatments.
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Effect of preparation conditions on the structure and properties of hybrid light curing composites
Škriniarová, Nina ; Ing. Vladimír Pavelka. Ph.D. (referee) ; Jančář, Josef (advisor)
The purpose of this thesis was to implement and evaluate series of experiments focused on the impact of mixing conditions and component dispensing on the structure and properties of hybrid polymer composite materials for resistant dental fillings. There were suggested some preparation methods and subsequently some mechanical properties of prepared samples were measured. Short non-formable polymer fibers in combination with filler particles of various particle sizes were added into the matrix. As matrix a polymer, light curable monomer mixture based on urethandimethacrylate and dodecandioldimethacrylate was used. Tensile deformation curves of prepared samples were measured. Morphology of prepared composites was observed by surface fractography using scanning electron microscopy (SEM). Samples were evaluated by comparing of tensile curves and morphology observed on SEM slides. The best way of component mixing and dispensing was evaluated based on comparison of experiment results and properties predicted by existed models.
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