3D-Printable Silicone Materials with Hydrogen Getter Capability

Journal Article · 01 March 2018 · Advanced Functional Materials

DOI: https://doi.org/10.1002/adfm.201707285 · OSTI ID:1438364

Ortiz-Acosta, Denisse  ^[1]; Moore, Tanya  ^[1]; Safarik, Douglas Joseph  ^[1]; Hubbard, Kevin Mark  ^[1]; Janicke, Michael Timothy  ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Organic getters are used to reduce the amount of reactive hydrogen in applications such as nuclear plants and transuranic waste. Here, the present study examines the performance of getter loaded silicone elastomers in reducing reactive hydrogen gas from the gas phase and their capability of being 3D printed using direct ink writing techniques. The samples are placed in closed vessels and exposed to hydrogen atmosphere at pressures of 580 torr and 750 mtorr and at a temperature of 25 °C. The hydrogen consumption is measured as a function of time and normalized to getter concentration in the polymer. The performance of the getter-loaded silicone elastomer containing 1,4-bis[phenylethynyl]benzene (DEB) as the organic getter and Pd/C catalyst (ratio of 3:1 DEB to catalyst) decreases with increasing the resin's curing temperature. Chemical analysis suggests that DEB reacts with the silicone resin at high temperatures. In addition, it is demonstrated that the increased surface area of 3D printed composites results in improved getter performance.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: USDOE; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1438364
• Report Number(s): LA-UR-18-20008
• Journal Information: Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 17 Vol. 28; ISSN 1616-301X
• Publisher: WileyCopyright Statement
• Country of Publication: United States
• Language: English