| Summary: | 碩士 === 國防大學理工學院 === 化學工程碩士班 === 101 === This paper is divided into three main parts, the first part we explore highly conductive nitrogen-doped graphene (N-GE) filled epoxy system for penetration threshold effect, we focused on the amount of fillers, solvents dilution ratio, curing temperature, and other parameters to do the coupling agent is added to adjust, and then discovered nitrogen-doped graphene wettability by adjusting the resin to be filled in after the order reaches 2wt% penetration threshold, but solvent dilution ratio is too high will cause the shrinkage during curing blocked affect electrical performance, and through the addition of silane coupling agent to improve its dispersion, may in adding 2wt% graphene obtained under a base resistivity 150Ω-cm expression.
While the second part, we try to cationic coupling agent ATPS modified to form functional groups on graphite oxide and modified for simultaneous removal of deoxyribonucleic functional group, in this long chain containing amino ATPS-GE actually filled into the inner conductive silver glue observe its effect on the structure and weather resistance, and found that adding 2wt% of ATPS-GE and although resistance rate 0.38Ω-cm up to 2.0Ω-cm, but the amount of resistance change was from 7.9% to 2% and the light filled into without modification of the nitrogen-doped graphene, the amount of change and that is down from 32.5% pure silver to 7.9%, indicating that the modified graphene and graphene as a filler, there is indeed a stable structure to enhance the function of weathering .
And the third part, we try to use two kinds of core-shell particles of copper metal to replace the original silver metal filler, expect graphene by silver-coated and coated with an outer layer of copper metal particles to enhance the chemical stability and further reduce packing costs, weathering test data, we found that after two hundred hours of testing two kinds of core-shell-type filler variation were 7.7% and 8.4%, in contrast to copper and copper graphene plus more than 200% of the variation is quite stable in terms of volume, core-shell structure that can indeed protect the copper metal particles effectively, it is desirable to prepare by a combination of these materials with low cost and high-performance composite stable conductive gel.
Keywords: graphene, metal core-shell particles, silane coupling agent, conductive adhesive
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