Development of graphene

• Main Author: K.Logaasundrum
• Published: 2023
• Subjects: Graphene; Flexible; Heat Sink

Heatsink is a heat exchanger used to transfer heat generated by a mechanical or an electronic device to the surrounding environment, currently black anodized aluminium based heatsink body is being used in the heat exchanger applications for the attenuators. Attenuators are an electrical component that are designed to reduce the amplitude of a signal passing through the component without significantly degrading the integrity of the signal. This research focuses on replacing the aluminium based heat sink with graphene based hybrid material heat sink in the application of heat sink for the attenuators. This is due to the ability of graphene-based material to conduct heat efficiently compared to the aluminium, thus increasing the heat dissipation properties of the material and component. This research focuses on producing five different types of composite pure graphene, graphene aluminium hybrid, graphene zinc hybrid, graphene silicon dioxide hybrid and pure epoxy hardener. The composite of pure graphene, graphene aluminium hybrid, graphene zinc hybrid and graphene silicon dioxide hybrid were produced in different proportion of 0.03% wt, 0.06% wt and 0.09% wt of the hybrid solution. There is an overall of 13 samples that were produced. The characterization test was conducted on the samples, the mechanical properties of the samples produced were tested using the tensile testing. Based on the results obtained for the tensile testing the sample with the highest tensile stress, lowest tensile stress and the pure epoxy hardener was cut into smaller specimen. In addition to that, these samples were sent for the scanning electron microscope (SEM) testing to determine the morphological structure and the content of material of the samples. Furthermore, the thermal conductivity test was conducted on three different types of composite graphene aluminium hybrid, graphene zinc hybrid and graphene silicon dioxide hybrid. Based on the obtained thermal conductivity test result, the composite with good heat dissipation properties could be determined. The composite with remarkable results based on the test conducted can be used as an alternative to replace aluminium based heat sink.