Reinforcement of waste hemp fibres in aromatic diamine-based benzoxazine thermosets for the enhancement of mechanical and thermomechanical properties
| Autor: | Adnan Aftab Nizamani, Ahmer Hussain Shah, Li-li Zhang, Wen-bin Liu, Jun Wang, Abdul Qadeer Dayo, Abdeldjalil Zegaoui, Yi-le Xu |
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| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Materials science Polymers and Plastics General Chemical Engineering Thermosetting polymer 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Brittleness Flexural strength chemistry Ultimate tensile strength Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology Glass transition Curing (chemistry) |
| Zdroj: | Plastics, Rubber and Composites. 46:442-449 |
| ISSN: | 1743-2898 1465-8011 |
| DOI: | 10.1080/14658011.2017.1386366 |
| Popis: | Natural fibres (NFs) have been successfully reinforced in polymer matrices to strengthen the properties of the polymers. The polybenzoxazine thermosets are facing instable mechanical properties due to the high brittleness, herein, waste hemp fibres (WHF) reinforced polybenzoxazine composites are prepared. Effects of WHF volume % loading on curing, thermomechanical, mechanical, and thermal properties are studied. FTIR results confirmed that WHF rich in −OH groups increased the ring-opening of oxazines and reduced curing temperature. In addition, an increase of 223%, 111%, 64%, and 253% in impact, tensile strength, flexural and Young's modulus, respectively, were recorded after loading optimum concentration (30 vol. %) in composites. Considerable enhancements were also seen in the thermomechanical properties on optimum loading, double stiffness and 26°C increase was recorded in the glass transition temperature. Nonetheless, the decline was observed in thermal stabilities, T5% and Yc were 24°C and 1.... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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