Effect of carbon nanotube mass fraction and distribution on microwave heating effect of rubber composites.

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    • Abstract:
      Rubber composites with different carbon nanotubes (CNT) mass fraction and distribution were constructed. The effect of CNT mass fraction and distribution on microwave heating effect of rubber composites was studied by non-equilibrium molecular dynamics (NEMD) method. The results show that compared with natural rubber (NR), the area of high-temperature regions and the number of hot spots in the rubber composites increased significantly due to the addition of CNT. Hot spots appeared at the positions of CNT. The lowest hot spot temperature of rubber composite is 591 K. The highest temperature of hot spot is far higher than the vulcanization temperature commonly used for rubber. The microwave heating rate and heating uniformity of rubber composites are significantly affected by the mass fraction and distribution of CNT. With the increase in CNT mass fraction, the heating rate of rubber composites firstly increased and then decreased; however, the heating uniformity showed an opposite trend. The maximum heating rate reached 287.77 K ps−1 when the CNT mass fraction is 9.21%. When the CNT mass fraction is 4.83%, the microwave heating temperature difference of the rubber composites showed a minimum value, and the minimum value was 3.03 K. When CNT were distributed vertically, the microwave heating rate of the rubber composites showed a maximum value, and the maximum value was 1014.21 K ps−1. When CNT were distributed diagonally, the microwave heating temperature difference of the rubber composites showed a minimum value, and the minimum value was 6.25 K. [ABSTRACT FROM AUTHOR]
    • Abstract:
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