Results 61 to 70 of about 57,907 (324)

Effects of build positions on the thermal history, crystallization, and mechanical properties of polyamide 12 parts printed by Multi Jet Fusion

open access: yesVirtual and Physical Prototyping, 2022
Multi Jet Fusion (MJF) has gradually been utilised for the commercial fabrication of final products. In particular, the mechanical properties of MJF-printed polyamide 12 (MJF PA12) parts have been widely investigated by manipulating the process ...
Kaijuan Chen   +7 more
doaj   +1 more source

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör   +9 more
wiley   +1 more source

Targeting the Ets Binding Site of the HER2/neu Promoter with Pyrrole-Imidazole Polyamides [PDF]

open access: yes, 2000
Three DNA binding polyamides (1-3) were synthesized that bind with high affinity (Ka = 8.7·10^9 M^-1 to 1.4·10^10 M^-1) to two 7-base pair sequences overlapping the Ets DNA binding site (EBS; GAGGAA) within the regulatory region of the HER2/neu proximal ...
Beerman, Terry A.   +6 more
core   +1 more source

Influence of the Origin of Polyamide 12 Powder on the Laser Sintering Process and Laser Sintered Parts

open access: yesApplied Sciences, 2017
Different features of polymer powders influence the process of laser sintering (LS) and the properties of LS-parts to a great extent. This study investigates important aspects of the “powder/process/part”-property relationships by comparing two polyamide
Manfred Schmid   +3 more
doaj   +1 more source

Geometry‐Based Scan Curve Analysis: Rapid Method for the Evaluation of Scan Strategies in Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold   +9 more
wiley   +1 more source

The dimensional stability of glass-fibre reinforced Polyamide 66 during hydrolysis conditioning [PDF]

open access: yes, 2009
Injection moulded glass-fibre reinforced polyamide 66 composites based on two glass fibre products with different sizing formulations and unreinforced polymer samples have been characterised both dry as moulded and during conditioning in a water-glycol ...
Ali, J.Z., Thomason, J.L.
core   +1 more source

Performance optimization of 3D printed polyamide 12 via Multi Jet Fusion: A Taguchi grey relational analysis (TGRA)

open access: yesInternational Journal of Lightweight Materials and Manufacture, 2023
The multi jet fusion (MJF) additive manufacturing techniques enable producing different complex geometries quickly with a relatively inexpensive product development process, using a thermoplastic powder, specifically polyamide 12 (PA 12).
Said Abdallah   +2 more
doaj  

Rotational Molding of Polyamide-12 Nanocomposites: Modeling of the Viscoelastic Behavior [PDF]

open access: yesInternational Journal of Material Forming, 2020
Nowadays, polyamide 12 (PA-12) is considered as an interesting polymer in the rotomolding process to manufacture different pieces like the liner part in the storage hydrogen tank (type IV). In this study, the pure polyamide-12 and PA12 pieces, incorporated with 0.5%, 1% and 3% wt Nano Carbon Black (NCB), were manufactured by the rotomolding process ...
Shirinbayan, Mohammadali   +5 more
openaire   +5 more sources

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

open access: yesAdvanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi   +5 more
wiley   +1 more source

Temperature-sensitive protein–DNA dimerizers [PDF]

open access: yes, 2005
Programmable DNA-binding polyamides coupled to short peptides have led to the creation of synthetic artificial transcription factors. A hairpin polyamide-YPWM tetrapeptide conjugate facilitates the binding of a natural transcription factor Exd to an ...
Ansari, Aseem Z.   +6 more
core   +1 more source

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