[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.]
ASTM International launches group to create standards for recovered carbon black (rCB)
January 18, 2017
The ASTM International Board of Directors approved the launch of a new technical committee dedicated to developing standards for the growing field of recovered carbon black (rCB). The Committee on Recovered Carbon Black (rCB) (D36) will focus on creating and updating standards in areas such as: the decomposition of scrap tires, other scrap-rubber components, sustainability, and material characterization.
Carbon black is a form of paracrystalline carbon, produced by the incomplete combustion of heavy petroleum products, and features a high surface area-to-volume ratio (although lower than that of activated carbon). Carbon black is used as a reinforcing additive in rubber products—notably tires—where tensile and abrasion wear properties are critical. There is also increasing interest in using conductive carbon black additives for Li-ion batteries.
Cooper Tire and BRDI consortium partners report significant progress on grant to develop guayule polymer for tires
September 20, 2016
At its recent annual meeting in Albany, Calif., the public-private consortium behind the Biomass Research and Development Initiative (BRDI) grant, “Securing the Future of Natural Rubber—an American Tire and Bioenergy Platform from Guayule,” reported several key advancements emerging from the group’s work over the past year.
Cooper Tire & Rubber Company, working as the lead agency in the grant, announced that its scientists have reached a key milestone toward the goal of producing, by mid-2017, a concept tire in which all of the natural and synthetic rubber is replaced by guayule-based polymers. Guayule is a shrub that is grown primarily in the southwestern United States and contains rubber that can be processed for use in tires. (Earlier post.)
New approach for synthetic rubber for degradable tires: converting cyclopentene to polypentenamers
August 22, 2016
A team from the Texas A&M University campus in Qatar (TAMU-Qatar) and Caltech has developed a new way to make synthetic rubber; once this material is discarded, it can be easily degraded back to its chemical building blocks and reused in new tires and other products. The researchers will present their work today at the 252nd National Meeting & Exposition of the American Chemical Society (ACS) in Philadelphia.
According to the Rubber Manufacturers Association, nearly 270 million tires were discarded in the US in 2013—more than one tire per adult living in the country. Many of the non-degradable scrap tires get stockpiled in landfills. More than half go on to become tire-derived fuel—shredded scrap tires that get mixed with coal and other materials to help power cement kilns, pulp and paper mills and other plants. But environmentalists are concerned that the emissions from this practice could be adding harmful pollutants to the air.
Continental showcases car tires and engine mounts with rubber made from dandelion roots; targeting series production in 5-10 years
April 25, 2016
Continental has developed and tested car tires and engine mounts with rubber made from dandelion roots. In 2014, Continental brought onto the road the first sample of a premium winter tire featuring tread made from dandelion rubber. (Earlier post.) At the end of 2015, ContiTech tested the new renewable resource, named TARAXAGUM, in engine mounts. The company is striving for series production in five to ten years.
Continental says that the plant has the potential to become an alternative, environmentally friendly resource and could further reduce dependency on traditionally produced natural rubber. Not only this, but because it grows under moderate climatic conditions, it can also generate savings in CO2 emissions and transport costs.