Results 41 to 50 of about 8,249 (238)

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

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

Engineered polylactide (PLA)–polyamide (PA) blends for durable applications: 1. PLA with high crystallization ability to tune up the properties of PLA/PA12 blends

European Journal of Materials, 2022
Polylactide (PLA), a biodegradable polyester produced from renewable resources, has a key position in the very promising market for bioplastics. Unfortunately, for utilization in durable/engineering applications, PLA suffers from some shortcomings such ...
Marius Murariu, Thomas Arzoumanian, Yoann Paint, Oltea Murariu, Jean-Marie Raquez, Philippe Dubois   +5 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

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

Flame Retardant Intumescent Polyamide 11 Nanocomposites – Further Study [PDF]

, 2008
The objective of this research is to develop improved polyamide 11 and 12 polymers with enhanced flame retardancy, thermal, and mechanical properties for selective laser sintering (SLS) rapid manufacturing (RM).
Hadisujoto, B., Koo, J. H., Lam, C., Lao, S.C., Luo, Z. P., Moon, T. J., Pilato, L., Wissler, G., Yong, W., Zhou, J.   +9 more
core   +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

Investigation of the mechanical properties of polyimide fiber/polyamide 12 composites printed by Multi Jet Fusion

Virtual and Physical Prototyping, 2023
Multi Jet Fusion (MJF) has attracted extensive attention because of its ability to print support-free complex structures. However, the mechanical properties of MJF-printed polymer parts are still unsatisfactory for certain industrial requirements. Herein,
Mei Chen, Yanbei Hou, Ran An, Wei Shian Tey, Ming Gao, Jiayao Chen, Lihua Zhao, Kun Zhou   +7 more
doaj   +1 more source

New Modeling of the Lensing Galaxy and Cluster of Q0957+561: Implications for the Global Value of the Hubble Constant [PDF]

, 1999
The gravitational lens 0957+561 is modeled utilizing recent observations of the galaxy and the cluster as well as previous VLBI radio data which have been re-analyzed recently.
Angonin-Willaime M.-C., Garrett M. A., Garrett M. A., Kormann R., Kyu‐Hyun Chae, Pelt J., Pijpers F. P., Refsdal S., Refsdal S.   +8 more
core   +3 more sources