A new way to make tough coatings: Self-assembly
Article Abstract:
Sandia National Laboratories, based Albuquerque, NM, is producing protective coatings, that are twice as tough compared to one, that comes from randomly-mixed materials. The coating's ingredients are asembled in a manner, that is a takeoff from the concept of seashells. Jeff Brinker, a Sandia scientist, observed that the abalone shell is two times sturdier because of the calcium carbonate layers, which alternate with the polymer layers. The resulting material turns out to be 1,000 times firmer than the component materials. Researchers combined the materials using surfactants with hydrophilic and hydrophobic molecular sides.
Comment:
Is producing protective coatings, that are twice as tough compared to one, that comes from randomly-mixed materials
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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New reactor technology doubles nitrogen trifluoride yield
Article Abstract:
Air Products and Chemicals, Inc. of Lehigh Valley, PA, plans to commercialize a new improved process to manufacture nitrogen trifluoride (NF3) that is used in the production of semiconductors. Air Products intends to replace the existing reactors of its specialty-gas facility in Hometown, PA, with new reactors integrated with the new technology and with a higher throughput, in late 1999. The new reactors is expected to raise its NF3 production to 500,000 lb/yr. The new technology uses a high-speed stirring capacity reactor to enhance mixing.
Comment:
Plans to commercialize a new improved process to make nitrogen trifluoride that is used in production of semiconductors
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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Turbulence minimizes fouling in this waste-treatment system
Article Abstract:
Electrosep Inc has introduced an electrolytic process for recovering products from plant effluent. The electrolytic process is intended for effluents that contain cations. A major component is the application of a special cell geometry that helps promote turbulence. The turbulent flow ensures that the solids in the effluent do not contribute to the fouling of the membrane and anode.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1999
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