Funct. Mater. 2023; 30 (3): 393-397.
Properties of vulcanizates based on nitrile butadiene rubber in the presence of halomethyl-containing compounds
1Institute of Radiation Problems, Ministry of Science and Education of the Republic of Azerbaijan, AZ1143 Baku, Azerbaijan
2Azerbaijan State University of Oil and Industry, AZ1010 Baku, Azerbaijan
The effect of high temperature (423 K) on the process of vulcanization of nitrile butadiene rubber (NBR) with the participation of hexachloro-4,4-dimethylbenzophenol (HCDMBP) was studied, which makes it possible to significantly improve the technical properties of vulcanizates. The molecular structure in the system SKN-40+HCDMBF+ZnO was studied by Fourier IR spectroscopy. The distribution of double bonds in the NBR macromolecule was calculated from the optical densities of the absorption bands at 967, 912, and 750 cm-1. In order to confirm the data on the comparative structural activity of HXDMBF with NBR, as well as to select the effective dose of HXDMBF, the relative amount of gel formed in model mixtures based on SKN-40M at 5.0 parts per hundred rubber presence of zinc oxide was determined by heating at 423 K for 25 minutes. It was found that the density of effective row connections (Nc) is lower in the sulphur vulcanization group than in others.
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