Corrections: October 2012 CT

Corrections of errors in August 2012 issue of Composites Technology.

In the August 2012, in our feature titled “The Evolution of Infusion,” CT reported incorrect cure temperature data for NASA’s phenylethynyl terminated imide (PETI) resins. This material cures not at “300°F to 375°F/148°C to 190°C,” as reported on p. 29, but in a much higher range (630°F to 700°F/332°C to 371°C).

In the same article, CT incorrectly labeled a photo on p. 32. The caption omitted the name of the molder, Carbon Fiber Composites, leaving the impression that the part on display was the first ever infused via the double-bag infusion technique developed by Russ Emanis (Dexell Composites, Keller, Texas). That is not the case. The image is shown at left, with a corrected caption.

And in a sidebar on p. 31, titled “Backgrounder: Proxima pDCPD,” CT reported outdated plant capacity figures for Materia’s (Pasadena, Calif.) Proxima polydicyclopentodiene resin. As of July 2012, Materia’s capacity in Huntsville, Texas, was not “2,000 metric tonnes (4.4 million lb) from a single pilot plant,” but had reached 15 million to 20 million lb (6,800 to 9,070 metric tonnes). Materia plans to increase capacity to as much as 50 million lb (22,679 metric tonnes) by the end of 2013. CT regrets the errors.
 

Editor Pick

Backgrounder: Proxima pDCPD

Materia Inc.'s (Pasadena, Calif.) Proxima, a completely new type of polydicyclopentadiene (pDCPD) thermoset resin, is said to offer the same mechanical properties as, and better long-term durability than, epoxy