Basic Properties of Pyrolysis carbon black of Waste Tyres and Application of Pyrolysis carbon black in Transition Layer Rubber of All Steel Radial Tire

The main chemical composition of pyrolysis carbon black of waste tires is C, O, Cu, Zn and so on. The content of ash and fine powder in pyrolysis carbon black is high, and the 300% elongation stress is high. The difference between pyrolysis carbon black and furnace black N326, which is commonly used in rubber, is obvious compared with chemical property. The pyrolysis carbon black was used to replace furnace black N326 in the transition layer of all steel load Radial tire rubber through experimental study. It was found that the compression heat generation and dynamic loss (Tanδ) of the blend rubber before and after aging were obviously reduced, the elongation at break and resilience increased, while the tensile stress and tear strength decreased by 100% and 300% , but the hardness and tensile strength changed little before and after aging. According to the latest raw material price calculation, 15 used tire pyrolysis carbon black instead of furnace carbon black N326 used in all steel Radial tire transition layer rubber application, excluding labor costs, electricity and equipment depreciation, a ton of blended rubber saves about $22.86 in production costs.

The influence of oxidized technical carbon N121 on the properties of butyl-based rubbers

The subject of the study were samples of channel technical carbon K354, furnace technical carbon N121 and experimental – based on TUN121, oxidized with active forms of oxygen. Samples of carbon black were studied in the composition of a rubber mixture based on BK 1675N butyl rubber. The purpose of this study was to determine the possibility of using oxidized technical carbon N121 in fillers of rubber based on butyl rubber, instead of carbon black K354. The physicochemical properties of the samples of technical carbon under study, the results of physical and mechanical tests, and the gas permeability tests of rubber mixtures filled with the samples under study are presented. A conclusion is made about the possibility of replacing channel technical carbon K354 with furnace black carbon N121 oxidized with 30% hydrogen peroxide.

The Effect of the Functionalisation of Low-Dispersion Carbon Black of the OMCARB Series by Hydrogen Peroxide on the Properties of Filled Composites

The aim of this work was to produce a new filler for polymers in which a low surface activity is combined with a high degree of structure and functionalisation of the surface, which will bring the processing properties of filled rubber mixes closer to the properties of rubber mixes with channel carbon black. The oxidation of specimens of low-dispersion, highly structured carbon black of grade OMCARB S820 was carried out using aqueous solutions of hydrogen peroxide of different concentration. Using a combination of methods, including X-ray diffraction analysis (D8 Advance diffractometer; Bruker, Germany) and transmission electron microscopy (JEM 2100 electron microscope; JEOL, Japan), we assessed the physicochemical properties and the form and the number of oxygen-containing groups (carboxyl, phenolic, lactone) on the surface of a particle of oxidised S820 in comparison with carbon black K354 (produced by the Khazar Chemical Plant, Turkmenistan) and semi-active furnace black N550 (produced by Omsktekhuglerod). The rheological characteristics (MDR 3000 vibrorheometer and MV 3000 viscometer; MonTech, Germany) and the physicomechanical characteristics (tensometer; Shimadzu, Japan) of rubber mixes filled with these blacks and of rubber compounds based on natural rubber were determined. The dynamic properties of the rubber compounds and the glass transition temperatures were determined on a DMA 242D instrument (Netzsch, Germany). Comparative data on the temperature dependence of the mechanical loss tangent (tg δ)of the rubber compounds showed that at temperatures of −60 and +60°C the greatest differences are possessed by rubber compounds with K354. At intermediate temperatures, the tg δ values for rubber compounds with the different fillers are similar. The new carbon black was advantageous with respect to the strength properties and dynamic characteristics of the rubber compounds, retaining the unique properties of composites filled with channel black.

Optimal Design of Heating System for Annular Furnace

According to the present problems of annular furnace, using the furnace black box, the temperature distribution of billet in the heating process is measured. Based on the results, the existing heating system is found deficient. Therefore, make improvements to the heating system, and mainly increase the heat load. Heating process tracking test is carried out again. Achieve the desired outcome, such as temperature uniformity, better quality, shorten time,etc.