Experimental Study on Thermal Conductivity Property of Rubber Composites Filled with Carbon Nanotubes

2011 ◽  
Vol 221 ◽  
pp. 373-376 ◽  
Author(s):  
Ze Peng Wang ◽  
Yan He
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Experimental Study ◽  
Carbon Black ◽  
Natural Rubber ◽  
Rubber Composites ◽  
Conductivity Property

Thermal conductivity of rubber composites filled with CNTs (carbon nanotubes) and N234 CB (carbon black) were investigated. Result indicated that Thermal conductivity of NR (natural rubber) filled with CNTs is higher than that of NR filled with CB in the case of the same filling amount. CNTs can better improve the performance of thermal conduct of rubber composites than CB. The more the filling content of CNTs is, the higher thermal conductivity of NR composites.

Electron tunneling in carbon nanotubes and carbon black hybrid filler-filled natural rubber composites: Influence of non-rubber components

2018 ◽  
Vol 39 (S2) ◽  
pp. E1237-E1250 ◽  
Author(s):  
Yeampon Nakaramontri ◽  
Claudia Kummerlöwe ◽  
Norbert Vennemann ◽  
Suwaluk Wisunthorn ◽  
Skulrat Pichaiyut ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Natural Rubber ◽  
Electron Tunneling ◽  
Rubber Composites ◽  
Hybrid Filler ◽  
Natural Rubber Composites

scholarly journals Effect of carbon nanotubes and nanodiamonds on the heat storage ability of natural rubber composites

2020 ◽  
pp. 009524432093397
Author(s):  
Minna Poikelispää ◽  
Mari Honkanen ◽  
Minnamari Vippola ◽  
Essi Sarlin
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Phase Change Materials ◽  
Heat Storage ◽  
High Energy ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Heat Storage Materials ◽  
Vulcanization Process

Phase change materials are utilized in heat storage applications, as they have high latent heat during the phase transition. In addition, high thermal conductivity is required from the heat storage materials to achieve high energy efficiency. In this study, the effect of carbon nanotubes (CNTs) and nanodiamonds (NDs) on the thermal conductivity and the heat storage capacity of the paraffin–natural rubber composites was studied. It was found that the CNTs work better than NDs in such composites. They increase thermal conductivity significantly and thus improve the heat transfer rate of the composite. They were also found to prevent the migration of paraffin out of the rubber during the vulcanization process, which increases the lifetime of the composite.

Dielectric and microwave properties of carbon nanotubes/carbon black filled natural rubber composites

2012 ◽  
Vol 41 (10) ◽  
pp. 408-412 ◽  
Author(s):  
O A Al-Hartomy ◽  
A A Al-Ghamdi ◽  
F Al-Salamy ◽  
N Dishovsky ◽  
R Shtarkova ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Natural Rubber ◽  
Microwave Properties ◽  
Rubber Composites ◽  
Natural Rubber Composites

Percolation Phenomenon in Thermal Conductivity of Carbon Black Filled Rubber and Morphology

2010 ◽  
Vol 146-147 ◽  
pp. 575-580
Author(s):  
Jun Ping Song
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Natural Rubber ◽  
Percolation Threshold ◽  
Volume Fraction ◽  
Graphitized Carbon Black ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Percolation Behavior ◽  
Percolation Phenomenon

A kind of graphitized carbon black 40B2 was incorporated in natural rubber matrix and vulcanizates were prepared. The content of carbon black varied from 4 to 100phr for 100phr of natural rubber. Thermal conductivity of the CB/rubber composites was studied as a function of CB loadings and temperature. TEM and SEM were employed to explore the morphology of the carbon black and the composites. It was found that percolation phenomenon existed in thermal conductivity of CB/rubber composites at different filler loadings, which was much similar with percolation behavior in electrical conductivity properties of many composites, and the percolation threshold was about 13.63%. The influence of temperature on thermal conductivity was more obviously within the region from the percolation threshold to the volume fraction of 26.2%.However, no great effect could be found on the percolation behavior of the composites in thermal conductivity. The result of TEM indicated that the mean size of CB particles was about 25nm, the maximum size of CB aggregates was about 125nm, and the CB aggregates were multichain in shape. The results of SEM showed that the distribution of CB differed at different filler loadings. Before the percolation threshold, the CB aggregates existed isolatedly, nevertheless at the percolation threshold, some long chains made up of CB aggregates ran through the rubber matrix, which resulted in the rapid increase in thermal conductivity value, and then with the addition of CB loadings, the number of chains increased. When the volume fraction was up to 26.2%, some three dimensional networks formed.

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