Do you keep music or tax files on compact discs you bought at a big box store? Well any money you saved by buying cheap CDs could be lost in a hurry. There are some reports that cheap CDs only last two years or so. Cutting corners on materials’ quality exponentially increases the potential for damage from poor handling or storage practices. You have a couple options: 1) Buy high-quality CDs and be careful when handling or 2) Practice extremely careful storage and handling with special technology.
One way to protected CDs is to pay a quarter for a special plastic sleeve developed by Bell Labs. The sleeve features a semiconductive plastic film or sheet. The base polymer is typically polyethylene or polyester that is chemically reacted with conductive copper and other ingredients to form a covalently bonded, homogeneous structure. If someone walks on a carpet and then touches a CD, they can discharge electricity that can locally oxidize a region of the aluminum layer embedded in the CD. The oxidized aluminum will no longer reflect a CD drive’s laser light properly, so all data recorded in the affected area ceases to be readable. Bell Labs licensed the idea to a company called Intercept Technology.
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
Although bio-based polymers face challenges from petroleum-based polymers, in certain markets they can displace the petro-based incumbents. Here are six new bio-based and renewable plastics for a variety of applications.
BASF has developed tools and initiatives to help engineers use more of its renewable materials in their designs, more effectively, as well as to build parts using them with more predictable performance.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
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