Time filter

Source Type

United States

Harber S.C.,Zeon Chemicals
Rubber World | Year: 2011

Polyepichlorohydrin terpolymer (GECO) and copolymer (ECO) compounds were evaluated long-term in various ethanol-containing fuel blends. A total of four compounds was studied. All the stocks were carbon black filled and typical for a moderately extended fuel hose compound. The ECO stock used a triazine based cure (Zisnet F-PT) which is a system that uses the pendant chloromethyl group as a cure site. The compounds were pass and a half mixed (masterbatched, then finaled on the mill) in a 1,600 cc laboratory internal mixer and sheeted off using a 20.3 cm × 20.3 cm × 40.7 cm laboratory mill with a roll speed ratio of 1.28:1. The compounds were aged in, with samples suspended in test tubes inserted in heater controlled immersion blocks. GECO and ECO based compounds showed no significant change in low-temperature performance pre- and post-immersion and remained consistently flexible near or below -45°C even after 1,008 hours of exposure to fuel media.

Shan L.,IBM | Dickson T.,IBM | Kwark Y.,IBM | Baks C.,IBM | And 9 more authors.
Proceedings - Electronic Components and Technology Conference | Year: 2013

This paper summarizes the exploratory work conducted at IBM which seeks to reduce electrical I/O power consumption to facilitate both power distribution and device cooling for future exascale computing systems. The development of novel low-loss dielectric materials was coupled with design for performance to achieve low channel loss by minimizing reflections and energy dissipation due to non-ideal current return paths. A printed circuit board was fabricated and tested, with results confirming a 20% reduction of channel loss at 10GHz when compared to currently leading commercial materials. This 3dB improvement in loss for a 15dB channel, can offer a 50% I/O power reduction when used with power scalable driving/receiving circuits. © 2013 IEEE.

Anderson A.,Zeon Chemicals | Jones M.,Zeon Chemicals
Rubber World | Year: 2011

A study was conducted to demonstrate the use of low viscosity HNBR to increase productivity in high shear molding methods. It was demonstrated that the physical properties of these new low viscosity polymers were similar to the existing grades. The demonstrated flow characteristics for these new polymers significant through molding studies revealed significant improvement when compared to other Z-polymers in a similar compound recipe. The flow rate for the Z-2010EP was greater than the Z-2010L compound at each injection pressure. Zetpol's 2010L and 2010EP polymers were evaluated under the study using a standard 70 durometer A hardness compound similar A hardness compound similar to production formulations that were used in high shear operations in many ways. The evaluation used a single compound recipe and focused on the property differences with this polymer replacement.

Jones M.,Zeon Chemicals | Anderson A.,Zeon Chemicals
Rubber World | Year: 2011

Various application areas where low viscosity HNBR polymers have replaced, in whole or in part, a standard HNBR and have demonstrated the desired improvement in processing, were developed. Z-2010L, Z-2010EP, and blends of these two polymers were evaluated, and the compounds were mixed in an internal mixer and mill finished. A new family of easy processing Zetpol HNBR polymers are developed that are found to have superior processing properties when compared to current HNBR polymers, while maintaining physical properties similar to current HNBR polymers. Aging characteristics similar to traditional HNBR polymers are also demonstrated physical properties of the compounds are compiled and they indicate no change by using the polymer blend. Some improvement in the Die C tear is noted that is always beneficial in the area of oilfield applications.

Discover hidden collaborations