[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]
How a tire company is doing its part to recycle and reuse; Michelin’s TREC
November 11, 2015
by Derek Petersen
It’s fascinating how individuals and companies continue to find creative ways to recycle and reuse. Companies will attract negative attention for not doing their part to help protect the environment—potentially risking a loss in profits due to a shrinking consumer base because of their environmental decisions. One company, Michelin, has learned how to recycle and reuse large amounts of scrap tires in an intriguing way.
Since the 1990s, there have been many efforts towards learning the best and most efficient ways of how to recycle scrap tires. These efforts include: tire-derived fuel; civil engineering; and asphalt rubber. According to the EPA, asphalt rubber is the largest single market for ground rubber, consuming an estimated 220 million pounds, or approximately 12 million tires.
Bridgestone successfully builds passenger car tires with 100% guayule-derived rubber
October 02, 2015
Bridgestone Corporation has successfully built passenger tires with 100 percent of its natural rubber-containing components derived from guayule, a desert shrub that grows in arid regions. Natural rubber is contained in the plant’s barks and roots. (Earlier post.) Built at the Bridgestone Technical Center in Japan, the tires were constructed using the company’s guayule natural rubber cultivated by Bridgestone at its Biorubber Process Research Center (BPRC) in Mesa, Arizona.
Bridgestone built similar passenger tires at its operations in Rome, Italy earlier this summer. In those tire builds, all of the tire’s major natural rubber components—including the tread, sidewall and bead filler—were replaced with natural rubber extracted from guayule grown and harvested by Bridgestone.
Oak Ridge/Drexel team produces supercapacitor electrodes from scrap tires
September 28, 2015
By employing proprietary pretreatment and processing, researchers at Oak Ridge National Laboratory and Drexel University have produced flexible polymer carbon composite films from scrap tires for use as electrodes for supercapacitors.
The first synthesized highly porous carbon (1625 m2 g−1) using waste tires as the precursor. The narrow pore-size distribution and high surface area led to good charge storage capacity, especially when used as a three-dimensional nanoscaffold to polymerize polyaniline (PANI). The resulting composite paper was highly flexible, conductive, and exhibited a capacitance of 480 F g−1 at 1 mV s−1 with excellent capacitance retention of up to 98% after 10,000 charge/discharge cycles.
Tire-integrated triboelectric generator harvests electricity from rolling tire friction; est. up to +10% fuel econ
June 30, 2015
A group of University of Wisconsin-Madison engineers and a collaborator from China have developed a triboelectric nanogenerator (TENG) that harvests energy from a car’s rolling tire friction. An innovative method of reusing energy, the nanogenerator ultimately could provide automobile manufacturers a new way to squeeze greater efficiency out of their vehicles.
The TENG is a novel energy harvesting device to convert mechanical energy into electricity based on the universally known triboelectric principle—i.e., the generation of an electric charge resulting from the contact or rubbing together of two dissimilar objects. Specifically, the nanogenerator relies on the triboelectric effect to harness energy from the changing electric potential between the pavement and a vehicle’s wheels.
Cooper Tire completes work on $1.5M DOE project to develop fuel efficient tires, exceeding targets
May 04, 2015
Cooper Tire & Rubber Company completed work under a $1.5-million government grant to develop advanced tire technology aimed at increasing vehicle fuel efficiency. The grant, awarded by the US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy, called for Cooper to develop technology for light vehicle tires that delivered a minimum 3% improvement in vehicle fuel efficiency while lowering average tire weight by at least 20%, all without sacrificing performance.
Cooper was successful in developing technologies that exceeded the project’s goals, delivering an average fuel efficiency improvement of 5.5% and weight reduction ranging from 23% to 37% in concept tires.