Preview

Fine Chemical Technologies

Advanced search

THE THERMAL STABILITY OF POLYMER CABLE COMPOUNDS WITH A FLAME-RETARDING FILLER

https://doi.org/10.32362/2410-6593-2018-13-6-35-41

Full Text:

Abstract

Currently, halogen-free cable compositions are becoming increasingly common in the manufacture of cable compositions. The concept of halogen-free or “zero halogen” becomes a symbol of fire resistance, low-smoke characteristics, low toxicity of volatile products of combustion, the absence of the toxic, corrosive and irritating gas - hydrogen chloride - and other hydrogen halides in the volatile products. More and more manufacturers of cable products are beginning to pay increasing attention to the problems of processing, toxicity and fire safety. It should be noted that the requirements for improving the fire safety of cable products are constantly becoming tougher, since the main problem of most of these polymeric materials is their flammability, high smoke generation and high flame spread rate. In this regard, there is a burning question to increase these characteristics and bring them to the level of compounds based on PVC. The main way to increase the flame-retardant characteristics of halogenfree cable compositions is to introduce mineral fire retardants into these compositions. The study of the composition and packaging of these mineral fillers-flame retardants makes it possible to increase the level of flame-retardant characteristics of halogen-free cable compositions. The paper presents the results of studies on the thermal stability of cable compositions based on PE + EVA mixtures containing magnesium hydroxide crystalline hydrate as a filler-flame retardant. It is shown that cable compositions containing magnesium hydroxide crystal hydrate are characterized by higher heat resistance and thermal stability (~ 2-fold) compared to a polymeric matrix based on PE + SEVA. This allows to process them at high temperatures (more than 200°C) by extrusion and pressure casting.

About the Authors

A. Yu. Svatikov
LLC «Aditim»
Russian Federation

Engineer and Technologist

17, Butlerova st., Moscow 117342, Russia



I. D. Simonov-Emelyanov
MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

D.Sc. (Engineering), Professor, Head of the Chair of Chemistry and Technology of Plastics and Polymer Composites Processing

86, Vernadskogo pr., Moscow 119571, Russia



References

1. Katz G.S., Milevski D.V. Fillers for polymer composites. Moscow: Khimiya Publ., 1981. P. 12-48. (in Russ.)

2. Egorov A.N. Influence of the nature of mineral fillers on the combustion processes of polymeric materials: thesis … Ph.D. (Chem.). Irkutsk, 2004. P. 45-103. (in Russ.)

3. Simonov-Emelyanov I.D., Kuleznev V.N. Principles of creation of composite materials. Moscow: MIHM Publ., 1986. 85 p. (in Russ.)

4. Kerber M., Vinogradov V.M., Golovkin G.S. Polymeric composite materials: structure, properties, technology: 3rd edition. Ed. by A.A. Berlin. Saint Petersburg: Professiya Publ., 2008. 560 p. (in Russ.).

5. Aseeva R.M., Zaikov G.E. Combustion of polymeric materials. Moscow: Nauka Publ., 1981. P. 23-87. (in Russ.)

6. Chaly V.P. Metal hydroxides (Patterns of formation, composition, structure and properties). Kiev: Naukova dumka Publ., 1972. 256 p. (in Russ.)

7. Todor D.N. Thermal Analysis of Minerals. Kent, UK: Abacus Press, Tunbridge Wells, 1976. 256 p.

8. Li Z., Qu B. Flammability characterization and synergistic effects of expandable graphite with magnesium hydroxide in halogen-free flame-retardant EVA blends. Polymer Degradation and Stability. 2003; 81(3): 401-408.

9. Weil E.D., Levchik S.V. Fire protective and flame retardant coatings: A state of the art of review. J. Fire Sci. 2011; 29: 259-296.

10. Hollingbery L.A., Hull T.R. The thermal decomposition of huntite an hydromagnesite. A review. Thermochim. Acta. 2010; 509(12): 1–11.

11. Beck C.W. Differential thermal analysis curves of carbonate minerals. Am. Mineral. 1950; 35: 985-1013.

12. Laoutid F., Lorgouilloux M., Bonnaud L., Lesueur D., Dubois P. Fire retardant of halogen-free calcium based hydrated minerals. Polymer Degradation and Stability. 2017; 136: 87-97.

13. Faust G.T. Huntite, Mg3Ca(CO3)4, a new mineral. Amer. Mineralogist. 1953; 38: 4-24.

14. Kangal O., Guney A. A new industrial mineral: Huntite and its recovery. Miner. Eng. 2006; 9(4): 376-378.

15. Qin J., Wang N., Liu N., Li L. Synergistic effect of modified expanded graphite and zinc borate on the flammability, thermal stability and crystallization behavior of LLDPE/EVA composites with Mg(OH)2/Al(OH)3. Polymer Composites. 2018; Aug. DOI: 10.1002/pc.24956.

16. Aziz A.A., Alauddin S.M., Salteh R.M., Shueb M.I. The thermal properties of nano magnesium hydroxide blended LDPE/EVA/Irganox 1010 for insulator application. Int. J. Aerospace and Mechan. Eng. 2014; 8(12): 1424-1428.


For citation:


Svatikov A.Yu., Simonov-Emelyanov I.D. THE THERMAL STABILITY OF POLYMER CABLE COMPOUNDS WITH A FLAME-RETARDING FILLER. Fine Chemical Technologies. 2018;13(6):35-41. (In Russ.) https://doi.org/10.32362/2410-6593-2018-13-6-35-41

Views: 126


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


ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)