Tooling and molding of automated processes such as transfer molding benefit greatly from flow and cure simulation-based computer-aided engineering, particularly for costly, high-temperature elastomers. This paper demonstrates advanced analytical rubber characterization techniques and mathematical modeling that drive custom simulation for elastomer manufacturing.

This paper will present a review of polyacrylic rubber technology that culminates in a presentation of several high-performance HT-ACM solutions. Studies are shown where elastomeric solutions in both the high-temperature sealing and hose application areas have excellent long-term resistance to hot lubricants, transmission fluids and caustic engine vapors. Two new elastomers are introduced.applications.

This article describes the investigation and commercialization of a specific compound intended for a cryogenic seal application. A hypothesis to account for the improvement in low-temperature performance is discussed and extended to other potential chemistries and applications.

In this study, the Premier RPA Rubber Process Analyzer was used to measure the differences in rheological behavior from using different base elastomers with variation in the applied work history during mixing. Model rubber compounds were prepared and tested using several different base elastomers. Processability characteristics as seen in the Payne Effect were measured for these mixed stocks with varying work histories using the Alpha Technologies Premier RPA.

This paper studies the characterization and potential commercial uses of pyrolytic carbon black obtained in an industrial scale waste tire recycling process. Pyrolytic carbon black was produced using a rotary kiln oven with a daily batch capacity of 5 metric tons and potential commercial uses were evaluated. The pyrolysis was performed in an inert atmosphere in a temperature range from 400°C to 500°C for about 8 hours. Inorganic content was about 12 percent (primarily zinc oxide) and sulfur content was about 3 percent.

This paper will describe several ink-substrate combinations for incorporating PTF circuitry onto fabrics, performance levels, ASTM methods being developed and potential applications.

All past methodologies for the determination of the regulated phthalates are based on solvent extraction, filtration and concentration. These traditional techniques are cumbersome, time-consuming and suffer from analyst-to-analyst variability while producing data of limited value. In response to these analytical challenges and in conjunction with the ASTM, Frontier Lab developed a technique using a multi-mode pyrolyzer coupled with a GC-MS system for analyzing phthalates in polyvinyl chloride.

Tire makers are challenged with satisfying the changing demands for fuel efficiency, improved performance and durability—all without negatively impacting operational productivity and cost. This paper focuses on connecting market drivers and trends with material solutions that can help manufacturers improve operations, increase sustainability and enhance performance. Working from the Eastman Technology Center of Excellence in Akron, Eastman Chemical Co. collaborates with tire makers around the world to focus on innovations in insoluble sulfur, stabilizers and performance resins.

Additive manufacturing, by definition, is a process of joining materials to make objects from 3D model data, usually layer upon layer. Compared with subtractive manufacturing, in which the unwanted material is removed, instead, materials are added continuously layer by layer in the additive manufacturing process.