Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties
Source abstract
Abstract
Expanded graphite (EG)-reinforced epoxy composites were prepared by a solution mixing method. The structure and morphology of the EG/epoxy composites were investigated by XRD, FE-SEM and HR-TEM. The EG prepared by acid oxidation and thermal expansion shows good compatibility with the epoxy resin that enters the EG layers to decrease their thickness to 60–70 nm, owing to its abundant oxygen-containing functional groups. With the addition of 9 wt% EG, the thermal decomposition temperature of the composite increases from 340 to 480 °C, the electrical conductivity from 10−15 to 10−5 S/cm and the tensile stress is increased by more than 30%. These improvements are attributed to the good dispersion of EG sheets in the epoxy matrix.
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Research context
OpenAlex topics: Fiber-reinforced polymer composites · Synthesis and properties of polymers · Graphene research and applications
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References (27)
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