Results 21 to 30 of about 8,802 (200)

Polyamide 11-Carbon Nanotubes Nanocomposites: Preliminary Investigation [PDF]

, 2008
The objective of this research is to develop an improved polyamide 11 (PA11) polymer with enhanced flame retardancy, thermal, and mechanical properties for selective laser sintering (SLS) rapid manufacturing.
Koo, J. H., Lam, C., Lao, S. C., Luo, Z. P., Moon, T., Piccione, P. M., Pilato, L., Wissler, G., Yong, W., Zhou, J.   +9 more
core   +1 more source

Preparation of iron oxide–coated aramid fibres for improving the mechanical performance and flame retardancy of multi jet fusion–printed polyamide 12 composites

Virtual and Physical Prototyping, 2023
Multi jet fusion (MJF), a powder-based additive manufacturing technology, is suitable for fabricating fibre-reinforced polymer composites. However, the types of reinforcement fibres applied in MJF are limited due to the incompatibility between the fibres
Yanbei Hou, Ming Gao, Jiayao Chen, Wei Shian Tey, Mei Chen, Han Zheng, Boyuan Li, Lihua Zhao, Kun Zhou   +8 more
doaj   +1 more source

Laser Sintering Fabrication of Highly Porous Models Utilizing Water Leachable Filler-Experimental Investigation into Process Parameters [PDF]

, 2007
The authors are developing a laser sintering process to fabricate highly porous models with such high porosities as 90% and more. In the process, water-soluble filler is mixed with designated plastic powder and leached out after laser sintering process
Niino, Toshiki, Oizumi, Shunsuke, Otsuki, Hiroyuki   +2 more
core   +1 more source

Insights into the effects of epoxy resin infiltration on powder aging issue induced by powder recycling in powder bed fusion of Nylon12 materials

Journal of Materials Research and Technology, 2023
In a powder bed fusion (PBF) process where powder bed preheating is needed, the powder bed will be subjected to an aging issue, which limits the reuse of powders.
Anfu Guo, Jin Wang, Rongji Tang, He Kong, Dekun Kong, Peng Qu, Shaoqing Wang, Hongbing Wang, Yingbin Hu   +8 more
doaj   +1 more source

Preparation of polyamide 12 powder for additive manufacturing applications via thermally induced phase separation

e-Polymers, 2022
Spherical polyamide 12 (PA12) powder for selective laser sintering (SLS) was prepared by thermally induced phase separation (TIPS) method. It was authenticated that the mixed solvent can regulate the liquid–liquid phase separation (LLPS) process by ...
Su Dandan, Yang Jingkui, Liu Shan, Ren Lulu, Qin Shuhao   +4 more
doaj   +1 more source

Einstein's equations in Ashtekar's variables constitute a symmetric hyperbolic system [PDF]

, 1997
We show that the 3+1 vacuum Einstein field equations in Ashtekar's variables constitutes a first order symmetric hyperbolic system for arbitrary but fixed lapse and shift fields, by suitable adding to the system terms proportional to the constraint ...
A. Abraham, A. Ashtekar, A. Ashtekar, A. Sen, C. Bona, Enzo O. Leguizamón, H. Friedrich, Mirta S. Iriondo, Oscar A. Reula, P. Anninos, R. Penrose, S. Fritelli, T. Jacobson   +12 more
core   +2 more sources

Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering

Molecules, 2015
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.
Jiaming Bai, Ruth D. Goodridge, Shangqin Yuan, Kun Zhou, Chee Kai Chua, Jun Wei   +5 more
doaj   +1 more source

3D printing of anisotropic Sm–Fe–N nylon bonded permanent magnets

Engineering Reports, 2021
Fabricating a bonded magnet with a near‐net shape in suitable thermoplastic polymer binders is of paramount importance in the development of cost‐effective energy technologies.
Kinjal Gandha, M. P. Paranthaman, Brian C. Sales, Haobo Wang, Adrian Dalagan, Tej N. Lamichhane, David S. Parker, Ikenna C. Nlebedim   +7 more
doaj   +1 more source

Effect of Silane Coupling Treatment on the Adhesion between Polyamide and Epoxy Based Composites Reinforced with Carbon Fibers

Fibers, 2020
The increasing efforts aimed to design structures with reduced weight and better mechanical performances has led in recent years to a growing use of fiber reinforced polymer materials in several fields such as marine.
Vincenzo Fiore, Vincenzo Orlando, Carmelo Sanfilippo, Dionisio Badagliacco, Antonino Valenza   +4 more
doaj   +1 more source

Laser sintering of nano-hydroxyapatite coated polyamide 12 powders [PDF]

, 2018
As part of a larger study on the laser sintering (LS) of nano-composite structures for biomedical applications, a wet mixing method was used to coat Polyamide 12 (PA12) particles with nano-hydroxyapatite (nHA).
Goodridge, R.D., Grant, D.M., Hui, D., Scotchford, C.A.   +3 more
core   +2 more sources