Methodological Aspects of Evaluating the Particle Size Distribution of Powder Elastomeric Materials

Abstract:

The properties of crumb rubber (CR) of unsorted end-of-life tires and of gas masks face part crushed at ambient temperature, as well as powder elastomeric materials (PEM) obtained by high-temperature shear grinding (HTSG) of CR and high-temperature shear co-grinding of CR with thermoplastic elastomer have been investigated. The methods of dry screening with vibrating sieve, wet laser diffraction, scanning electron microscopy, determination of the specific surface area by the BET method by sorption nitrogen and powder agglomeration were used. The effect of an anti-agglomerating additive on the results of determining the particle size distribution by the methods of dry vibrating sieving and wet laser diffraction has been investigated. Methodological recommendations for determining the particle size distribution of powder elastomeric materials (PEM) obtained by the HTSG have been developed.

• Periodical: Key Engineering Materials (Volume 899)
• Pages: 58-66
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.899.58
• Online since: September 2021
• Authors: I.V. Gordeeva*, Tatiana V. Dudareva, I.A. Krasotkina, Vadim G. Nikol'skii, Yulia A. Naumova, M.Yu. Sinkevich, V.A. Lobachev
• Keywords: Active Powder of Discretely Devulcanized Rubber, Dry Screening with Vibrating Sieve, High-Temperature Shear Grinding, Powder Agglomeration, Powder Elastomeric Materials, Wet Laser Diffraction

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