Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites
The polymer with imine bonds (C═N) synthesized by condensation of aldehydes and amines was called polyimine. Graphene nanoplatelets (GNPs) were blended into polyimine by imine dynamic chemistry, and GNPs/polyimine (GNPs-P) composites were fabricated by heat-pressing. A series of thermal and mechanic...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-08-01
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| Series: | e-Polymers |
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| Online Access: | https://doi.org/10.1515/epoly-2022-0060 |
| _version_ | 1828108516104077312 |
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| author | Zhang Si Xiong Zhengjin Zhang Jian Zhang Xueting Chen Yuhang Chen Yun |
| author_facet | Zhang Si Xiong Zhengjin Zhang Jian Zhang Xueting Chen Yuhang Chen Yun |
| author_sort | Zhang Si |
| collection | DOAJ |
| description | The polymer with imine bonds (C═N) synthesized by condensation of aldehydes and amines was called polyimine. Graphene nanoplatelets (GNPs) were blended into polyimine by imine dynamic chemistry, and GNPs/polyimine (GNPs-P) composites were fabricated by heat-pressing. A series of thermal and mechanical properties have been tested for the matrix and GNPs-P composites. Thermogravimetric analyzer showed that the GNPs were able to improve the thermal stability of the GNPs-P composites. From the test of mechanical properties, GNPs-P composite with 0.5 wt% GNPs was superior to the matrix in bending and tensile properties. The bending and tensile strengths were 92.65 and 73.05 MPa, with an improvement of 18% and 5%. GNPs-P composites with 1 wt% GNPs showed the most significant advancement in impact properties, reaching an impact strength of 11.745 kJ·m−2 with a gain of 21.6%. Cross-sectional observations using scanning electron microscope proved that the GNPs-P composites have brittle fractures. A small number of GNPs could synergize with the matrix by bridging the cracks, creating a crack diffusion resistance and a load transfer reinforcement effect, which improved the mechanical properties of the GNPs-P composites. |
| first_indexed | 2024-04-11T10:48:05Z |
| format | Article |
| id | doaj.art-c3888f49974e4e9f9670c01d2dd1bc97 |
| institution | Directory Open Access Journal |
| issn | 1618-7229 |
| language | English |
| last_indexed | 2024-04-11T10:48:05Z |
| publishDate | 2022-08-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | e-Polymers |
| spelling | doaj.art-c3888f49974e4e9f9670c01d2dd1bc972022-12-22T04:29:00ZengDe Gruytere-Polymers1618-72292022-08-0122169670410.1515/epoly-2022-0060Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine compositesZhang Si0Xiong Zhengjin1Zhang Jian2Zhang Xueting3Chen Yuhang4Chen Yun5School of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaSchool of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaSchool of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaSchool of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaSchool of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaSchool of Mechanical Engineering, Jiangsu University of Science and Technology, Changhui Road No. 666, Zhenjiang 212100, ChinaThe polymer with imine bonds (C═N) synthesized by condensation of aldehydes and amines was called polyimine. Graphene nanoplatelets (GNPs) were blended into polyimine by imine dynamic chemistry, and GNPs/polyimine (GNPs-P) composites were fabricated by heat-pressing. A series of thermal and mechanical properties have been tested for the matrix and GNPs-P composites. Thermogravimetric analyzer showed that the GNPs were able to improve the thermal stability of the GNPs-P composites. From the test of mechanical properties, GNPs-P composite with 0.5 wt% GNPs was superior to the matrix in bending and tensile properties. The bending and tensile strengths were 92.65 and 73.05 MPa, with an improvement of 18% and 5%. GNPs-P composites with 1 wt% GNPs showed the most significant advancement in impact properties, reaching an impact strength of 11.745 kJ·m−2 with a gain of 21.6%. Cross-sectional observations using scanning electron microscope proved that the GNPs-P composites have brittle fractures. A small number of GNPs could synergize with the matrix by bridging the cracks, creating a crack diffusion resistance and a load transfer reinforcement effect, which improved the mechanical properties of the GNPs-P composites.https://doi.org/10.1515/epoly-2022-0060polyiminegraphene nanoplateletscompositesthermal propertiesmechanical properties |
| spellingShingle | Zhang Si Xiong Zhengjin Zhang Jian Zhang Xueting Chen Yuhang Chen Yun Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites e-Polymers polyimine graphene nanoplatelets composites thermal properties mechanical properties |
| title | Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| title_full | Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| title_fullStr | Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| title_full_unstemmed | Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| title_short | Mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| title_sort | mechanical properties and thermal analysis of graphene nanoplatelets reinforced polyimine composites |
| topic | polyimine graphene nanoplatelets composites thermal properties mechanical properties |
| url | https://doi.org/10.1515/epoly-2022-0060 |
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