Preview

Proceedings of the Voronezh State University of Engineering Technologies

Advanced search

Self-regulating electric heater based on elastomer, modified with multilayer carbon nanotubes

https://doi.org/10.20914/2310-1202-2018-3-341-345

Abstract

The review of modern approaches to the development of electric heating materials makes it possible to conclude that the studies of electrically conductive composites are based on using elastomers modified with nanoscale carbon materials. In the manufacturing of electric heaters, temperature self-regulation is the main property that increases their characteristics. However, researchers engaged in studying such heaters, face difficulties associated with the magnitude of supply voltage and power. In this regard, the tasks of the present work were as follows: to study the modifier characteristics for nanomodified heaters, and to select a modifier that is best dispersed in the elastomer, which will ensure the maximum magnitude of the supply voltage and the high value of the specific power of the heater. To develop an electric heater, silicone rubber modified with carbon nanotubes was used as an elastomer. The method for manufacturing the heating element nanomodified material was described. Multi-walled carbon nanotubes synthesized through the CVD method were employed as an electrically conductive modifier. Before modifying the elastomer, the carbon nanotubes were processed in a mill at a rotational speed of working blades of 25,000 rpm. Then, the nanotubes were thermally treated in a furnace until the temperature of 110 °C was reached. After that, the nanotubes and the elastomer were mixed using a BRABENDER mixer, followed by pressing and obtaining plates of the electric heating material. To ensure contact between the heater and the power source, aluminum foil, inserted into the punches before pressing, was used. The electrical conductivity of the elastic heater nanomodified material was studied using a setup (facility) constructed especially for that purpose. Based on the results obtained, a conclusion can be made on the expediency of using different multi-walled carbon nanotubes as elastomer modifiers, which form electrically conductive networks inside the elastomer and are capable of releasing heat when connected to an electrical voltage source. Employing a non-contact method of measuring the temperature field on the electric heater surface, thermograms were recorded. It was found that the temperature field is uniformly distributed on the heater surface and is stabilized at a certain time after achieving a thermal balance with the environment. From the data obtained, it can be concluded that the heating element connected to an alternating current network with a voltage of 220 V is efficient.

About the Authors

V. S. Yagubov
Tambov State Technical University
graduate student, engineer, department of technology and technology of production of nanoproducts, Sovetskaya street 106, Tambov, 392000, Russia


A. V. Shchegolkov
Tambov State Technical University
Cand. Sci. (Engin.), associate professor, department of technology and technology of production of nanoproducts, Sovetskaya street 106, Tambov, 392000, Russia


References

1. Wyzkiewicz I. et al. Self-regulating heater for microfluidic reactors. Sensor Actuat B-Chem. 2014. no. 1. pp. 893–896. doi: 10.1007/s11483–007–9043–6.

2. Luo J. et al. Electrically conductive adhesives based on thermoplastic polyurethane filled with silver flakes and carbon nanotubes. Composites Science and Technology. 2016. no. 129. pp. 191–197. doi: 10.1016/j.compscitech.2016.04.026

3. Pajor-Swierzy A., Farraj Y., Kamyshny A., Magdassi S. Effect of carboxylic acids on conductivity of metallic films formed by inks based on copper@silver core-shell particles. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2017. no. 522. pp. 320–327. doi: 10.1016/j.colsurfa.2017.03.019

4. Lebedev S.M, Gefle O.S., Amitov E.T. Mechanical and rheological properties of new electrically conductive polymer materials. Materialy i tekhnologii novyh pokolenij v sovremennom materialovedenii [Materials and technologies of new generations in modern materials science: a collection of proceedings of the international conference with elements of a scientific school for youth]. 2015. pp. 24-28. (in Russian)

5. Larionov S.A., Deev I.S., Petrova G.N., Beyder E.Ya. Influence of carbon fillers on the electrophysical, mechanical and rheological properties of polyethylene. Trudy VIAM [Proceedings of VIAM]. 2013. no 9. pp. 4. (in Russian)

6. Abdullin M.I., Basyrov A.A., Koltaev N.V. et al. Current-conducting polymer compositions for 3D printing. Byulleten' nauki i praktiki [Bulletin of Science and Practice]. 2016. no 4. pp. 44-50. (in Russian)

7. Doroganov V.A. Peretokina N.A., Doroganov E.A., Evtushenko E.I. et al. Investigation of nanomodified silicon carbide binders and composites based on them. Novye ogneupory [New refractories]. 2016. no. 9. pp. 44-47. (in Russian)

8. Chernyshov E.M., Slavcheva G.S., Artamonova O.V. On conceptual models for controlling the fracture resistance of nano-modified structures of conglomerate building composites. Izvestiya Kazanskogo gosudarstvennogo arhitekturno-stroitel'nogo universiteta [News of the Kazan State University of Architecture and Civil Engineering]. 2014. no. 3. pp. 156-161. (in Russian)

9. Smirnov V.A., Korolev E.V., Danilov A.M., Kruglova A.N. Fractal analysis of the nanomodified composite microstructure. Nanotekhnologii v stroitel'stve: nauchnyj internet-zhurnal [Nanotechnologies in construction: a scientific Internet-journal]. 2011. vol. 3. no. 5. pp. 78-86. (in Russian)

10. Bhattacharya M. Polymer nanocomposites – a comparison between carbon nanotubes, graphene, and clay as nanofillers. Materials. 2016. vol. 9. no. 4. pp. 262.


Review

For citations:


Yagubov V.S., Shchegolkov A.V. Self-regulating electric heater based on elastomer, modified with multilayer carbon nanotubes. Proceedings of the Voronezh State University of Engineering Technologies. 2018;80(3):341-345. (In Russ.) https://doi.org/10.20914/2310-1202-2018-3-341-345

Views: 725


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 2226-910X (Print)
ISSN 2310-1202 (Online)