Thermal Conductivity and Interconnectivity of Hexamethylene Diisocyanate Contained Polyurethane Grafted Multiwall Carbon Nanotube/Polyurethane Nanocomposite Filmopen access
- Authors
- Yun, Sungjin; Im, Hyungu; Kim, Jooheon
- Issue Date
- Mar-2011
- Publisher
- JAPAN INST METALS
- Keywords
- carbon nanotube; polyurethane; thermal conductivity; interconnectivity; hexamethylene diisocyanate
- Citation
- MATERIALS TRANSACTIONS, v.52, no.3, pp 564 - 567
- Pages
- 4
- Journal Title
- MATERIALS TRANSACTIONS
- Volume
- 52
- Number
- 3
- Start Page
- 564
- End Page
- 567
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/21728
- DOI
- 10.2320/matertrans.M2010322
- ISSN
- 1345-9678
1347-5320
- Abstract
- The hexamethylene diisocyanate (HDI) contained polyurethane (PU) grafted multi-walled carbon nanotubes (HDI-g-MWNTs) have been synthesized by simple blending method to fabricate thermal conductive nanocomposite. This method shows that HDI-g-MWNTs can improve the interfacial compatibility between HDI-g-MWNTs and matrix. The HDI base PU thermal conductive film (HDI-PU) showed enhanced dispersibility of functionalized MWNTs because of low crystallinity which was affected by its steric hindrance. The length of MWNTs was prevented until the end of the reaction. The long distance of MWNTs could be help to make good thermal conducting path. These phenomena have influence on the excellent thermal conductivity. The thermal conductivity increased from kappa = 0.274 W/mK to kappa = 0.645 W/mK, as the addition of the MWNTs increase to 1.2 vol%. The interconnectivities of HDI-Polyurethane have higher value than other composite films.
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