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Displaying 121 - 140 of 148 stories.
January 1, 2007
GE Plastics (Pittsfield, Mass.; edlinks.che.com/6891-543) has launched Extem thermoplastic polyimide (TPI) resins, a new family of amorphous polymers. The new resin is said...
http://www.che.com/processing_and_handling/engineering_materials/A-new-thermoplastic_3194.html
December 1, 2006
Surfaces treated with Top on Top — a new surface refinement technology developed by Degussa AG (Düsseldorf, Germany; edlinks.che.com/6519-552) — are easy to clean and...
http://www.che.com/processing_and_handling/engineering_materials/Stay-clean-surfaces_3059.html
December 1, 2006
At Glasstec 2006 (Düsseldorf, Germany; October 24–28), the Fraunhofer Institute for Silicate Research (ISC; Würzburg, Germany...
http://www.che.com/processing_and_handling/engineering_materials/Vacuum-insulation_3062.html
November 1, 2006
A new primer technology for coating aluminum aircraft that uses magnesium instead of chromium has been developed by researchers at the North Dakota State University (Fargo; edlinks.che.com/5618-546). A...
http://www.che.com/processing_and_handling/engineering_materials/Cr-free-coatings_3039.html
October 1, 2006
    Since its introduction to the market in 1959, chlorinated polyvinyl chloride (better known as CPVC) has proven suitable for use in a wide variety of chemical process environments. Because it is inert to most mineral acids, bases, salts and aliphatic hydrocarbons, it offers a more reliable, long-term performance than many other materials, including metals and most non-metallic alternatives. In...
http://www.che.com/processing_and_handling/engineering_materials/Specifying-CPVC-In-Chemical-Process-Environments_2822.html
September 1, 2006
Next year, DuPont (Wilmington, Del.; edlinks.che.com/6516-538) plans to introduce a new family of thermoplastic nanocomposites that yield “substantial improvements” in key, desirable properties. With proper dispersion in a polymer, small amounts of...
http://www.che.com/processing_and_handling/engineering_materials/Coming-soon-a-new-family-of-nanocomposites_2999.html
July 1, 2006
    Trends in the worldwide chemical process industries, especially a steep rise in the compression and liquefaction of gases to lower the costs of their storage and transportation, have heightened the engineer's need to have a working familiarity with chemical-process operation at low (nominally, below 0°C) and cryogenic (below –100°C) temperatures. In addition to natural gas...
http://www.che.com/processing_and_handling/engineering_materials/Materials-of-Construction-for-Low-Temperature-and-Cryogenic-Processes_2782.html
July 1, 2006
Although polymer-based piping systems have been used in the chemical process industries (CPI) for decades, the global market share is only around 10%, says Stephan Schuessler, head of technology and R&D at Georg Fischer DEKA GmbH (GF DEKA; Dautphetal, Germany; edlinks.che.com/6514-537). The main reason for the low acceptance of polymer versus metallic materials is because polymers are still...
http://www.che.com/processing_and_handling/engineering_materials/Plastic-pipe-proves-itself-after-three-years-of-service_2971.html
July 1, 2006
A traditional treatment for damaged knee cartilage is called autologous chondrocyte implantation (ACI), whereby healthy cartilage-forming cells are taken from an undamaged site of the patient and injected to the damaged site. This procedure takes many weeks, during which time, the patient requires mechanical support, such as crutches. A new procedure, under development...
http://www.che.com/processing_and_handling/engineering_materials/New-polymers-improve-the-repair-of-knee-cartilage_2973.html
July 1, 2006
Dow Chemical Co. (Midland, Mich.; edlinks.che.com/6514-541) has launched Infuse olefin-block copolymers (OBC), a new family of olefin elastomers, which deliver improved properties (including abrasion resistance and high-temperature performance), and processing capabilities (such as faster set-up in processing...
http://www.che.com/processing_and_handling/engineering_materials/New-olefin-block-copolymers_2974.html
June 1, 2006
Researchers at Pacific Northwest National Laboratory (PNNL; Richland, Wash.; edlinks.che.com/5830-537) have developed a ceramic-based coating for steel and superalloys that prevents corrosion, oxidation, carburization and sulfidization, which commonly occur in gas, liquid, steam and other environments. The low-cost, easy-to-apply...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-coating-for-steel_2953.html
June 1, 2006
Although many new biodiesel plants are sprouting up around the world, Perstorp Oxo AB’s (Stenungsund Sweden) 160,000 m.t./yr rapeseed-methyl-esters (RME) facility, now under construction at Stenungsund, will be the first to have a reactor made from...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-biodiesel-reactor-is-made-of-duplex_2957.html
June 1, 2006
NexGen Technologies, LLC (Farmington Hills, Mich.; edlinks.che.com/5830-552) has commercialized a next-generation of engineered surface treatments that imparts wear-resistance...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Surface-treatment_2964.html
June 1, 2006
Corrosion has the chemical process industries seeing red in their metal tanks and pipelines — and on the bottom line, too. In the U.S., for example, chemical, petrochemical and pharmaceutical producers incur direct costs of $1.7 billion/yr for corrosion, or 8% of capital expenditures, and that does not include costs for operations and maintenance. All totaled, reports the National Association of...
http://www.che.com/processing_and_handling/engineering_materials/Newsfront-Monitoring-Corrosion-Online-and-in-Realtime_3075.html
May 1, 2006
    There are several reasons why composite fiberglass-reinforced-plastic (FRP) pipe has been replacing conventional pipe, and why this still relatively new material (see box, p. 46) should be kept in mind whenever piping is being specified for a new or a revamp project. Engineers involved with specifying or using FRP pipe should have a clear understanding of its nature and properties. A good...
http://www.che.com/processing_and_handling/engineering_materials/Dont-Overlook-Composite-FRP-Pipe_2799.html
April 1, 2006
A new phosphoric acid that contains less than 100 parts per billion of 30 different metal ions is now commercially available from Febex S.A. (Box, Switzerland; edlinks.che.com/5828-539), the phosphorous specialties subsidiary of CECA Arkema Group (Paris). The new grade of H3PO4, called IMAX 100, was developed for the electronics industry, including chip and semiconductor etching, in which the slightest...
http://www.che.com/processing_and_handling/engineering_materials/Metals-free-H3PO4-is-now-available-off-the-shelf_2927.html
April 1, 2006
Using a diamond anvil cell to create high (up to 50 GPa) pressures, and a laser to create high (up to 2,000 K) temperatures, researchers from Lawrence Livermore National Laboratory (LLNL; Calif....
http://www.che.com/processing_and_handling/engineering_materials/A-new-metal-nitride_2930.html
March 1, 2006
PolymersNet Co. Ltd. (Seoul, South Korea; edlinks.che.com/5827-548) and Cyclics Corp. (Schenectady, N.Y.; edlinks.che.com/5827-549) announced the first commercial application of CBT (cyclic butylene terephthalate) resin...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-An-improved-PC-resin_2906.html
March 1, 2006
A patented moisture-control technology (MCT) developed by CSIRO Plant Industry (edlinks.che.com/5827-534), with cooperation from Stellar Films Group (both Melbourne, Australia; edlinks.che.com/5827-535), has shown it can maintain field freshness of selected fruit and vegetables during extended periods of storage and shipping. In a recent export trial of oranges to the U.S., the MCT liner not only...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-packing-material-keeps-produce-moist-while-preventing-water-contact_2909.html
March 1, 2006
The conventional way to dye textiles is by the so-called dip process, whereby cloth is first immersed into a vat of the dying medium, then removed and dried. The dye is then thermally fixed to the textile by heating to 150°C, and the excess dye removed by washing and drying steps. These wash and dry steps use large volumes of water, which then becomes contaminated with dye, and the drying and fixing...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Slash-water-and-energy-requirements-with-this-dyeing-process_2911.html
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