Evolution of properties and enhancement mechanism of large-scale three-dimensional graphene oxide-carbon nanotube aerogel/polystyrene nanocomposites
| Autor: | Peifeng Feng, Zechao Chen, Lina Zhang, Xiaoru Li, Lichun Ma, Longyu Xu, Hui Xu, Jing Jin, Zetian Zhao, Guojun Song |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics Mechanical properties 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound Flexural strength law Enhancement mechanism Ultimate tensile strength Polymers and polymer manufacture Composite material Nanocomposite Graphene Organic Chemistry Aerogel 021001 nanoscience & nanotechnology In-situ polymerization 0104 chemical sciences Compressive strength TP1080-1185 chemistry GO-CNT aerogel Polystyrene 0210 nano-technology |
| Zdroj: | Polymer Testing, Vol 97, Iss, Pp 107158-(2021) |
| ISSN: | 0142-9418 |
| Popis: | Graphene oxide/carbon nanotubes reinforced high-performance polymer matrix composites featuring lightweight, electrical and thermal properties, are highly required, yet their development still remains a huge challenge. Here, a novel approach for a flexible and high strong (graphene oxide/carbon nanotube) aerogel/polystyrene (GOCA/PS) nanocomposite was developed by in-situ polymerization and hot-pressing method using prefabricated GO/CNT aerogel as the interconnected three-dimensional (3D) reinforcement skeleton. Aerogel plays the role of nano-rivets in composite to improve mechanical strength, and the enhancement mechanism was investigated. The results indicate that GO/CNT exhibits excellent dispersion in the polystyrene matrix. In compared with pure PS, the tensile, flexural, compressive, and impact strength of GOCA/PS composite with about 1.0 wt%, a 7:3 mass ratio of GO to CNT, were increased by shifted from 7.35 to 12.83 MPa (about 74.5%), 18.13–29.60 MPa (about 63.2%), 33.15 to 74.44 kJ/m2 (about 124.5%), and 2.09–6.53 MPa (about 211.94%), respectively. Moreover, the microhardness, elastic, flexural and compressive modulus also increased to maximum at a 7:3 mass ratio of GO to CNT. The approach may provide an effective approach to the design and investigation of reinforced composites. |
| Databáze: | OpenAIRE |
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