May 2023
The May issue of Rubber World in now available online Click here to read
Read moreCelebrating 134 years of service to the world-wide rubber industry
Development of a market for devulcanized and revulcanized rubbers can be achieved with in-depth understanding of the precise correlation among the physical and chemical properties of the initial vulcanizate, the devulcanization technique, and properties of the resulting devulcanizates.
Read moreBlends of hard clay, N990 and N550 were utilized to evaluate the electrical percolation region of EPDM compounds; and the viscosity and physical properties of the compounds were also measured.
Read morePrincipal methods for processing elastomeric materials are reviewed, including continuous extrusion and what is described as multi-step extrusion.
Read moreThe objective here is to provide a list of common latex types, their key characteristics, and a summary of their useful properties and contributions. It is unlikely that the summary will capture all the salient points of each latex type; but it should provide enough information to be useful if called upon to deliver a “30 second commercial.”
Read morePatents as compiled by the editors of Rubber World for May 2023 Fluid infused elastomersU.S. patent: 11,584,841Issued: February 21, 2023Inventors:
Read moreHigh dyne EPDM compounds offer an exceptional high surface energy level with a minimum of 58 dynes/cm, which is higher than all known rubbers, and at least twice as high as that of a typical EPDM compound.
Read moreEPDM has not been immune to significant price increases, material shortages and allocations. As extrusion expenses are dominated by material cost and throughput, price and efficiency are of the essence. One of the most common ways to improve cost efficiencies in extrusion compounds is to lower material cost by extending the polymer as much as possible using high amounts of filler, for which EPDM is perfectly suited. The other option to decrease costs is to run more product in the same amount of time, requiring a material with higher extrusion rates.
Read moreby Pete Spanos, Raffaele Bernardo and Montse Alvarez Grima, Arlanxeo As the number one non-tire rubber by volume, ethylene propylene
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