|About this Abstract
|MS&T22: Materials Science & Technology
|Manufacturing and Processing of Advanced Ceramic Materials
|Investigation of Lamination Approaches for SiC-filled Thermoplastic Polymer Blends
|Olivia Brandt, Rodrigo Orta, Rodney Trice, Jeffrey Youngblood
|On-Site Speaker (Planned)
Ceramic co-extrusion is a ceramic forming technique where a feedrod of a ceramic/polymer mixture is heated and extruded through a reduced cross-section, reducing the size but retaining the symmetry of the original feedrod. The co-extrusion process often involves a rebundling of ceramic/polymer extrudates or a “lamination” step via warm pressing to form the final component. Lamination is critical to the overall strength as any delaminations between adjacent exudates will manifest as cracks in the final sintered body. The aim of this presentation is to describe the mechanisms that cause delamination between warm-pressed ceramic-filled thermoplastic extrudates and to present approaches to mitigate this delamination. The approaches studied varied the thermoplastic blend compositions, the surface topography (e.g. surface roughening prior to warm pressing), and the binder burnout process. Mechanical tests and crack investigations were used to gain insight those variables that most contributed to successful lamination, and ultimately, crack-free sintered bodies.