MOSCOW (MRC) -- Rhein Chemie is introducing Rhenowave, a new concept for controlling the quality of rubber compounds, reported the company on its site.
The compounds are analyzed during extrusion (for example during straining or shaping) in a pulse transmission process with the help of ultrasound waves. Nanoscale fillers such as carbon black and silica have particularly good damping properties for soundwaves in the range of 1 MHz to 20 MHz, so that the filler content can be determined with a precision of up to 1 phr. Unlike with many other analytical methods that use electromagnetic waves, carbon black does not disturb this process. As a result, even black compounds can be volumetrically analyzed.
Using a marker with a high density, e.g. zinc oxide, the distribution of Rhenogran AP additionally can be monitored. Rhenogran AP products are customer-specific additive packages made from crosslinking chemicals, and are polymer-bound, dust-free and easily dispersible.
Rhenowave is fast, both used alone or in combination with Rhenogran AP. Following the exit of the compound from the extruder, an assessment of the compound quality is performed within a few seconds (inline control). Where array technology is used, up to 100% of the compound can be analyzed. Small areas where compound quality is insufficient are recognized immediately rather than later in the product. Rhenowave can be used in a production scale of 1,000 kg/h and it is absolutely non-destructive.
As MRC wrote earlier, last summer, Lanxess’ Rhein Chemie business unit opened a new production facility at the Porto Feliz site in Brazil. There, Rhein Chemie produces Rhenoshape high-performance curing bladders, which are used in tire manufacture. Around 170,000 bladders can be produced annually in the new facility. The new plant is equiped with state-of-the-art production technology. The latest findings in bladder technology have been implemented.
Besides, at its new site in Lipezk, which was opened on 4 July, 2013, Rhein Chemie produces rubber additives and release agents for the Russian and CIS markets, especially for the automotive and tire industries.
Rhein Chemie develops, produces and sells additives, specialty chemicals and service products for the rubber, lubricant and plastics industries. In fiscal 2012 Rhein Chemie achieved sales of EUR344 million and has approximately 1,100 employees worldwide. The company is headquartered in Mannheim, Germany and has production facilities in Europe, Asia and North and South America. Rhein Chemie is a wholly owned subsidiary of the specialty chemicals group Lanxess, Leverkusen, Germany.
MRC