Inorganic molybdates as functional flame-retardant additives for PVC-plastics and low-flammability cables

The paper presents dissertation research results aimed at the development of smoke-suppressing additives for plasticized polyvinyl chloride based on inorganic molybdates. The influence of molybdate cation nature and surface modification on thermal degradation, smoke formation, and mechanical properties of PVC plasticates is studied. Modified calcium and magnesium molybdates were shown to reduce smoke density by up to 55 % and increase the onset decomposition temperature by 30-35 °C. The obtained results demonstrate the prospects of molybdate additives for low-smoke PVC materials.

1. Rabinovich A.M. Polyvinyl chloride and composite materials based on it. Moscow: Khimiya, 2016. 320 pp.

2. Kuznetsov N.N., Smirnov V.A. Smoke Formation of Polymer Materials. St. Petersburg: Professiya, 2018. 284 p.

3. Chen J., Li Q. Effect of molybdate compounds on thermal degradation of PVC // Polymer Degradation and Stability. 2019. V. 165. P. 45–52.

4. Zhang X., Wang C. Smoke suppression mechanisms in PVC composites // Journal of Applied Polymer Science. 2020. V. 137, N 12. P. 118–125

5. Khasanov V.V., Borukaev T.A., Musaeva L.A., Kyarov A.A. Study of the effectiveness of using synthesized ZnMoO4 as a smoke suppressant for PVC compounds. Nauchno-tekhnicheskii Vestnik Povolzhya = Scientific and Technical Bulletin of the Volga Region. 2018;5:66–69.

6. Khasanov V.V., Borukaev T.A., Kipshieva T.A., Fotova D.M. Synthesis of smoke-suppressing additives based on inorganic molybdates for PVC plastisol and investigation of their anti-smoke characteristics. Nauchno-tekhnicheskii Vestnik Povolzhya = Scientific and Technical Bulletin of the Volga Region. 2016;4:32–34.