Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance
| Autor: | Ljubica Radović, Jovica Nešić, Marina Dojčinović, Melina Kalagasidis Krušić, Saša Brzić, Tihomir Kovačević, Jelena Rusmirović |
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| Rok vydání: | 2021 |
| Předmět: |
010407 polymers
Materials science Thermoplastic Thermosetting polymer 02 engineering and technology mechanical properties Reuse 01 natural sciences cavitation Materials Chemistry Polycarbonate Composite material Reinforcement Erosion resistance chemistry.chemical_classification Polymer-matrix composites Mechanical Engineering particle-reinforcement Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Mechanics of Materials visual_art Ceramics and Composites visual_art.visual_art_medium Surface modification 0210 nano-technology surface modification |
| Zdroj: | Journal of Composite Materials |
| ISSN: | 1530-793X 0021-9983 |
| DOI: | 10.1177/00219983211037045 |
| Popis: | Two types of polymer waste materials, poly(ethylene terephthalate) (PET) and polycarbonate based Colombian Resin (CR-39), were used for the designing of fully recycled composite materials. Waste PET was employed for the synthesis of thermoset unsaturated polyester resin (UPR), while CR-39 was used as reinforcement in the UPR matrix. Prior to mixing, CR-39 particles were subjected to oxidation and chemical activation using acids/base and ethanol amine, respectively. The effect of the modifier type and variable loading of the activated CR-39 particles on mechanical and dynamic-mechanical properties of the corresponding composites was investigated. The greatest improvement in the tensile and flexural strength of UPR resin was achieved with the composite containing 0.5 wt% of amine activated filler particles, 96.0% and 62.2%, respectively. The Arrhenius equation was used to calculate the activation energy for glass transition from dynamic mechanical properties measured at various frequencies. The activation energy of the main transition for UPR resin and composites were calculated to be 173 and 350 kJ·mol−1 indicating that reinforcement results in an increase in the energy barrier to macromolecules viscoelastic relaxation. In addition, erosion resistance was studied during exposure of samples to cavitation tests. According to the obtained results, these materials can be applied in construction and mining industry. |
| Databáze: | OpenAIRE |
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