Appliance Design - August 2007 - (Page 32)

PLASTICS addition of carbon nanotubes also increased the material’s thermal conductivity, improving its capacity to dissipate heat. After experimenting with adding metal powder to plastics without impacting the weight of the material significantly, Gupta turned to carbon nanotubes. With their ultra-small diameter, high aspect ratio, high mechanical strength, good electrical and thermal conductivity and lightweight, Gupta and his team found that carbon nanotubes had all of the properties necessary to accomplish the objective. “The long length and small diameter of carbon nanotubes forms an interconnectivity within the plastic that makes it electrically conductive,” says Gupta. “The structures work well for electromagnetic interference shielding. Once we reached this milestone, we began investigating ways to reduce the weight even further.” < For more information, enter numbers: DuPont. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312 Or email: carole.a.davies@usa.dupont.com NaturalNano. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313 Or email: fleischer@naturalnano.com PolyOne Corp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314 Or email: david.honeycutt@polyone.com RTP Co . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Or email: nbryant@rtpcompany.com Solvay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316 Or email: Richard.Thommeret@solvay.com Heat deflection is shown with the addition of DuPont nanomaterial to glass-reinforced PET. Mool C. Gupta. The nanocomposite material is a mixture of plastic, carbon nanotubes and a foaming agent, making it extremely lightweight, corrosion-proof and cheaper to produce than metal. The carbon nanotubes play a key role in cre- ating these unique properties, explained Gupta. Most notably, experiments revealed that only 1 percent to 2 percent of the material’s composition needed to be comprised of nanotubes to increase the electrical conductivity by 10 orders of magnitude. The Hot Off the Press Worldwide Coverage for International OEMs appliance DESIGN recently acquired the International Appliance Manufacturing magazine from Ashokan House International, who started publishing it in1997. The magazine is the industry’s annual technical review for household appliance design and manufacturing, including large domestic appliances (white goods) and small kitchen appliances, around the world. Published in English, the review is comprised of white papers from leading international companies and universities involved in developments for the appliance manufacturing process. For advertising or subscription information, please contact Fern Sheinman at 858-259-4585 or sheinmanf@bnpmedia.com www.applianceDESIGN.com 32 applianceDESIGN August 2007 www.applianceDESIGN.com http://www.appliancedesign.com http://www.appliancedesign.com

Table of Contents Feed for the Digital Edition of Appliance Design - August 2007

Contents Editorial Shipments/Forecasts News Watch A Reed Switch is Simople, yet Versatile, and Designers are Finding New Uses for this Time-Tested Technology A Novel Actuation and Sensing Technology can Register a Light Touch, but Resist Blows from a Hammer Tracing the Source of Noise is Made Easier with Noise Source Identification Methods Appliance Noise can be Annoying, but Designers have Many Material Choices to Help Rein in the Racket Nanocomposites are No Longer a Technology for the Future. These Plastic Materials are Already on the Job A New High-Strength, Low-Density Glass-Microsphere Additive can Improve Plastic Part and Molding Performance A New Electromagnetic Weld/Bonding Process Helps Ensure Long-Term Integrity of Joints in Plastic Parts Snap-Based Technology Eases Installation and Makes Products More Serviceable Two-Part Silicone Adhesives Provide a Rapid-Cure Alternative to Traditional One-Part Silicones Classified DesignMart Advertiser’s Index Association Report: GAMA

Appliance Design - August 2007

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