Effect of recycling on morphological and mechanical properties of High-Density Polyethylene : a Masterʼs thesis of the second-cycle master's study programme in Mechanical Engineering
Lobón Cisneros, Santiago
Mehansko recikliranje odpadkov se zelo pogosto uporablja v industriji plastike za zmanjšanje porabe novih materialov, pri čemer pa se mehanske lastnosti materiala z recikliranjem pogosto spreminjajo. ...Da bi zmanjšali vpliv teh sprememb na lastnosti končnega izdelka, se reciklirani materiali mešajo z nerecikliranim surovim materialom. V tej nalogi smo z različnimi metodami karakterizacije proučevali in kvantificirali učinek mešanja večkrat recikliranega polietilena visoke gostote (HDPE) s surovim materialom v različnih koncentracijah. Termične lastnosti in stopnjo kristaliničnosti smo določili z diferencialno skenirno kalorimetrijo, mehanske lastnosti, zlasti elastični modul in trdoto, pa z nanoindentacijo. Polarizirano optično mikroskopijo v kombinaciji z grelno mizo smo uporabili za raziskovanje kristalne strukture mešanic. Rezultati so pokazali močno odvisnost modula in trdote ter termičnih lastnosti od količine dodanega recikliranega materiala, mikroskopske raziskave pa niso dale dovolj rezultatov za oblikovanje nedvoumnih zaključkov. Ugotovljeno je bilo, da lahko zaradi razlik v strukturi recikliranega materiala, manjše količine veliko-krat recikliranega HDPE, dodanega surovemu materialu, izboljšajo mehanske in spremenijo termične lastnosti v večji meri kot enake količine manj-krat recikliranega HDPE, dodanega surovemu materialu.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Ljubljana : [S. Lobón Cisneros], 2020
MAG e 0000000867 IN: 70000867
MAG e 867 IN: 70000867
available - reading room
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