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Challenges in Laser Sintering of Meltprocessable Thermoset Imide Resin

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Challenges in Laser Sintering of Meltprocessable Thermoset Imide Resin


Polymer Laser Sintering (LS) is an additive manufacturing technique that builds 3D models layer by layer using a laser to selectively melt cross sections in powdered polymeric materials, following sequential slices of the CAD model.  LS generally uses thermoplastic polymeric powders, such as polyamides (i.e. Nylon), and the resultant 3D objects are often weaker in their strength compared to traditionally processed materials, due to the lack of polymer inter-chain connection in the zdirection. The objective of this project is to investigate the possibility of printing a meltprocessable RTM370 imide resin powder terminated with reactive phenylethynyl groups by LS, followed by a postcure in order to promote additional crosslinking to achieve higher temperature (250-300 °C) capability. A preliminary study to build tensile specimens by LS and the corresponding DSC and rheology study of RTM370 during LS process is presented.


Authors: Kathy C. Chuang, Timothy Gornet and Hilmar Koerner


Conference: CAMX 2016 – Anaheim


SKU/Code: TP16-0118


Pages: 12


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