The Effect of Multi-Walled Carbon Nanotubes on the Heat-Release Properties of Elastic Nanocomposites

Abstract

Of great importance in materials science is the design of effective functional materials that can be used in various technological fields. Nanomodified materials, which have fundamentally new properties and provide previously unrealized properties, have acquired particular importance. When creating heating elements and materials for deformation measurement, it is necessary to understand the patterns of heat release under conditions of mechanical deformation of the material, as this expands the potential applications of such materials. A study of elastomers modified with multi-walled carbon nanotubes (MWCNTs) has been carried at the MWCNTs concentration of 1–8 wt.%. The modes of heat release of nanomodified elastomers at a voltage of 50 V at different levels of tension are reported. The increment of the MWCNTs concentration to 7 wt.% leads to an increment in the power of heat emissions. It is worth noting the possibility of using the obtained elastomer samples with MNT as sensitive elements of strain sensors, which will allow obtaining information about physical and chemical parameters following the principles of measuring the change in electrical resistance that occurs during stretching and torsion. The changes in conductivity and heat emission under different conditions have been studied in parallel with Raman mapping and infrared thermography. The reported studies allow to make the next step to develop flexible functional materials for the field of electric heating and deformation measurement based on elastic matrices and nanoscale conductive fillers.

Changes in the Electrophysical Parameters of Nanomodified Elastomers Caused by Electric Current’s Passage

“…Moisture was removed from MWCNTs before introduction into the elastomer in a SANYO CONVECTION OVEN MOV 210F drying oven (SANYO Ltd., Osaka, Japan) at 110 °C. The samples were obtained according to the technology described in [ 24 , 25 ] ( Figure 1 ).…”

“…Studies related to the effect of MWCNTs on heat release in a flexible nanomodified elastomer are presented in the work and it was found that the heat release power can be represented in the form of regression equations, where there is a dependence of heat release on temperature, applied tensile strain and electrical heating [ 24 ]. In [ 25 ], the authors studied flexible heating elements based on silicone polymerized by a platinum catalyst and TiO 2 with different morphologies (spherical and acicular), as well as an SnO 2 /Sb coating and carbon black. The presented heater had a dependence of resistivity on temperature and could operate on an alternating voltage of 220 V.…”

Preparation and Characterization of Acrylonitrile Butadiene Rubber Reinforced with Bio-Hydroxyapatite from Fish Scale

“…However, NBR has drawbacks in tensile strength, flexibility and flame resistance, etc., that restrict its potential to be used in many applications requiring high performance [ 10 , 11 , 12 , 13 , 14 , 15 ]. Several researchers have recently been fabricating elastic composites, especially NBR-based nanocomposites, not only to improve the mechanical properties of NBR but also to enhance the resistance to solvents, oils, and heat [ 13 , 16 , 17 ].…”

Optimization of the Reduction of Shrinkage and Warpage for Plastic Parts in the Injection Molding Process by Extended Adaptive Weighted Summation Method

“…In [ 6 ], the authors optimized the electrophoretic deposition process parameters of polyaniline film. In [ 7 ], the authors developed research on the effect of the inclusion of cellulose nanocrystals on the mechanical properties of polyester resins.…”