Morphology,thermal and mechanical properties of epoxy adhesives containing well-dispersed graphene oxide |
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| Affiliation: | 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China;2. Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China;3. Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, China;1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China;2. School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China;1. Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;2. Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;3. Centro de Microscopia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;4. Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil;1. Surface Engineering and Tribology Division, Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute, Durgapur 713209, India;2. Academy of Scientific and Innovative Research (AcSIR), CSIR-CMERI, Campus, Durgapur 713209, India |
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| Abstract: | Graphene oxide (GO) is prepared and introduced into epoxy resins through a wet-transfer migration technique using a three-roll mill. The results of TEM, XRD and digital microscope observation show that good dispersion of GO is achieved without using any additives. The mechanical and thermal properties of GO/epoxy (GO/EP) adhesives are enhanced with GO incorporated. A 10.2% increase in Young's modulus and a 56.3% increase in elevated-temperature (120 °C) lap shear strength (LSS) was observed on addition of 1.0 wt% GO, compared to the neat epoxy adhesive. Increased glass transition temperature and improved thermal stability of the GO/EP adhesives are also observed in the DMA and TG analysis. Moreover, the toughness of the GO/EP adhesives is improved and much rougher fracture surface can be observed compared with the neat epoxy adhesive. No GO agglomeration can be observed in the SEM images of GO/EP adhesive with 1.0 wt% loading. |
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| Keywords: | Graphene oxide Dispersion Adhesive Mechanical properties of adhesives Thermal analysis |
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