Journal
MATERIALS
Volume 11, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/ma11091775
Keywords
particulate composites; carbon nanotubes; Joule heating; conductive polymers
Categories
Funding
- Transport Technology Research Innovation Grant (T-TRIG) from the Department for Transport in the United Kingdom
- Samsung Global Research Program [1011912]
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [2017-10069072]
- National Research Foundation (NRF) of Korea
- Korean Government (MSIP) [NRF-2016R1A5A1938472]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10069072] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Joule heating is useful for fast and reliable manufacturing of conductive composite materials. In this study, we investigated the influence of Joule heating on curing conditions and material properties of polymer-based conductive composite materials consisting of carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS). We applied different voltages to the CNT nanocomposites to investigate their electrical stabilization, curing temperature, and curing time. The result showed that highly conductive CNT/PDMS composites were successfully cured by Joule heating with uniform and fast heat distribution. For a 7.0 wt % CNT/PDMS composite, a high curing temperature of around 100 degrees C was achieved at 20 V with rapid temperature increase. The conductive nanocomposite cured by Joule heating also revealed an enhancement in mechanical properties without changing the electrical conductivities. Therefore, CNT/PDMS composites cured by Joule heating are useful for expediting the manufacturing process for particulate conductive composites in the field of flexible and large-area sensors and electronics, where fast and uniform curing is critical to their performance.
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