Differential scanning calorimetry (DSC) of failed injection molded parts
Bhandari, Shiva (2020)
Bhandari, Shiva
2020
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202005098096
https://urn.fi/URN:NBN:fi:amk-202005098096
Tiivistelmä
This thesis was written about the analysis of failed injection molded polymer parts by using differential scanning calorimetry (DSC). The thermal properties of the selected materials for the experiment were identified by the parameters such as glass transition, endothermic, exothermic peaks and melting points. Polylactic acid (PLA) parts showed glass transition temperatures (around 60-75℃), which influenced the results in DSC. Whereas the glass transition of polypropylene (PP) parts were very weak because of their high crystallinity, brittle and hard nature.
Materials that can be either crystalline or amorphous, liquid, or solid, fibers or polymer that can be tested by DSC to get the thermal behavior of the material. Therefore, DSC is the important technique for the thermal behavior of the materials. The main thing that has to be noticed in this experiment part of the thesis is the failure part of injection molding polymers of PP and PLA were observed non-filled which can be because of problem with the mold, defect with resin or problem with the processing.
The thesis was done with the interest of my field of study. During my study period I studied about the DSC and its application. It was always interesting to learn about the new things. So. The main reason for this thesis is to find out the thermal behavior of the unknown material with the help of DSC technique.
Materials that can be either crystalline or amorphous, liquid, or solid, fibers or polymer that can be tested by DSC to get the thermal behavior of the material. Therefore, DSC is the important technique for the thermal behavior of the materials. The main thing that has to be noticed in this experiment part of the thesis is the failure part of injection molding polymers of PP and PLA were observed non-filled which can be because of problem with the mold, defect with resin or problem with the processing.
The thesis was done with the interest of my field of study. During my study period I studied about the DSC and its application. It was always interesting to learn about the new things. So. The main reason for this thesis is to find out the thermal behavior of the unknown material with the help of DSC technique.