Preparation and Study of a Composition Based on Butadiene Nitrile Polymer Using Astragals

This work is devoted to the topic "Obtaining and studying a composition based on butadiene nitrile polymer using Astragals". Binary mixtures of butadiene nitrile rubber with astragals in different mass ratios were prepared and the flow index of the system alloy was studied at temperatures of 130, 160, 170 ℃ and under the influence of loads of 12.0-21.0 kg. Our studies have shown that at a temperature of 160 ℃ and when astragals has 5 mass parts in the binary mixture, it acts as a modifier. As a result of the modification, the technological properties of BNK, mainly compatibility with other components and chemical stability, increase by 1.5 times compared to standard resins. We have developed an optimal recipe for obtaining rubbers based on butadiene nitrile rubber and astragals. A rubber mixture was prepared based on the optimal recipe, the vulcanization mode and time were determined, which determined the vulcanization temperature to be 157C and the vulcanization time to be 26 minutest-his work was carried out on the purchase of BNR-based rubber for cables that is chemically resistant to aggressive environments, more perfect and fully capable of meeting operational characteristics, has chemical resistance in saline areas, and is suitable for use as a coating. The main indicators of the obtained regime were determined by physical-mechanical methods and compared with standard rubbers, and it was confirmed that the main indicators of the proposed rubber fully meet the requirements of the standard