Carbon Nanotube Chopped Fiber for Enhanced Properties in Additive Manufacturing

Menchhofer, Paul A.¹  Johnson, Joseph E.¹  Lindahl, John M.¹ 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

关键词: CNTs;    Carbon Nanotubes;    ABS;    composites;    Fiber reinforced composites;   

DOI  :  10.2172/1302927
RP-ID  :  ORNL/TM--2016/277
PID  :  OSTI ID: 1302927
Others  :  Other: ED2802000
Others  :  CEED492

学科分类：纳米科学和纳米技术

美国|英语

来源: SciTech Connect

【 摘 要 】

Nanocomp Technologies, Inc. is working with Oak Ridge National Laboratory to develop carbon nanotube (CNT) composite materials and evaluate their use in additive manufacturing (3D printing). The first phase demonstrated feasibility and improvements for carbon nanotube (CNT)- acrylonitrile butadiene styrene (ABS) composite filaments use in additive manufacturing, with potential future work centering on further improvements. By focusing the initial phase on standard processing methods (developed mainly for the incorporation of carbon fibers in ABS) and characterization techniques, a basis of knowledge for the incorporation of CNTs in ABS was learned. The ability to understand the various processing variables is critical to the successful development of these composites. From the degradation effects on ABS (caused by excessive temperatures), to the length of time the ABS is in the melt state, to the order of addition of constituents, and also to the many possible mixing approaches, a workable flow sequence that addresses each processing step is critical to the final material properties. Although this initial phase could not deal with each of these variables in-depth, a future study is recommended that will build on the lessons learned for this effort.