Abstract
One of the priorities for improving the performance characteristics of elastomer compositions is their physical modification, which allows to obtain materials with a new set of performance properties. Among the known methods of modifying products based on elastomers, one of the actual methods is radiation modification. It allows you to control the physico-mechanical and elastic-strength characteristics of products. In connection with the foregoing, the development of a technology for the radiation modification of elastomers with the aim of increasing their operational characteristics is relevant. In this work, the effect of ionizing radiation on the thermo-physical and operational properties of elastomeric compositions for the tread of career tires was investigated. It was established that the level of the maximum temperature developed in the samples depends on the degree of vulcanization of the elastomeric compositions. In samples of tread rubber, heat generation is reduced by 2–4 % after treatment with accelerated electrons. In the process of exposure to ionizing radiation, the formation of free radicals and their subsequent recombination occurs. Revealed an increase in crosslinking density in modified specimens. The correlation dependences between the thermophysical properties of elastomeric compositions and the intensity of heat generation in them are established. It was determined that the best thermo-physical properties of polymers with a degree of crosslinking t80. The wear resistance of the modified elastomeric compositions is increased up to 3.5 times.
Highlights
Radiation is a powerful energy source for chemical processing applications in several industries
Among the known methods of modifying products based on elastomers, one of the actual methods is radiation modification
In samples of tread rubber, heat generation is reduced by 2–4 % after treatment with accelerated electrons
Summary
Radiation is a powerful energy source for chemical processing applications in several industries. When an electron beam or X-ray radiation source interacts with a polymer material, its energy is absorbed by the material and active particles are formed, such as radicals, which initiate various chemical reactions. Types of radiation sources Various ionizing radiation, such as X-rays and accelerated electrons, are widely used for radiation processing of material These emissions affect the molecular structure and macroscopic properties of polymeric materials. Radiation crosslinking gives polymers such properties as insolubility, infusion, a significant improvement in their dimensional stability in chemically aggressive and high-temperature conditions, improved abrasion resistance, and increased strength
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