Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering.
The thermal influence of carbon nanotubes (CNTs) on the PA12 in the laser sintering process was assessed by physical experiments and a three dimensional simulation model. It appears that, by adding the CNTs into the PA12 matrix, the thermal conductivity increased. A double ellipsoidal heat flux model was applied to input a three dimensional, continuous moving, volumetric laser heat source. The predicted three dimensional temperature distributions suggested that the laser heat was conducted wider and deeper in the PA12-CNT sample than PA12. Greater heat conduction can reduce the interspace between two successive layers, and result in the increase of the parts' density and properties.
Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075 Singapore, Singapore. baijm@simtech.a-star.edu.sg.
Jiaming
J
Bai
Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK. Ruth.Goodridge@nottingham.ac.uk.
Ruth D
RD
Goodridge
Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075 Singapore, Singapore. yuan0057@e.ntu.edu.sg.|School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore. yuan0057@e.ntu.edu.sg.
Shangqin
S
Yuan
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore. kzhou@ntu.edu.sg.
Kun
K
Zhou
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore. mckchua@ntu.edu.sg.
Chee Kai
CK
Chua
Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075 Singapore, Singapore. jwei@simtech.a-star.edu.sg.
Jun
J
Wei
D004553:Electric Conductivity; D007834:Lasers; D008962:Models, Theoretical; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry*; D013814:Thermal Conductivity
D037742:Nanotubes, Carbon; D009757:Nylons; C036222:nylon 12
numerical simulation; polymer nanocomposites; selective laser sintering; thermal influence