Results 21 to 30 of about 7,830 (249)

Strain Rate Dependence of Compressive Mechanical Properties of Polyamide and Its Composite Fabricated Using Selective Laser Sintering under Saturated-Water Conditions

open access: yesMicromachines, 2022
In this work, polyamide 12 (PA12) and carbon fiber reinforced polyamide 12 (CF/PA12) composites were fabricated using selective laser sintering (SLS), and the coupling effects of the strain rate and hygroscopicity on the compressive mechanical properties
Xiaodong Zheng, Jiahuan Meng, Yang Liu
doaj   +1 more source

PA12 Powder Recycled from SLS for FDM [PDF]

open access: yesPolymers, 2019
In this study, Polyamide 12 (PA12) powder recycled after selective laser sintering (SLS) was made into filaments for fused deposition modelling (FDM). Compared with fresh PA12, the melt flow rate (MFR) of the recycled PA12 powder decreased by 77%, but the mechanical properties were only slightly reduced.
Li Feng, Yan Wang, Qinya Wei
openaire   +2 more sources

Aging of PA12 Powder in Powder Bed Fusion

open access: yesApplied Sciences, 2023
Powder Bed Fusion (PBF) is a popular additive manufacturing technology due to its high build resolution and ability to produce microscale geometries without the use of additional support. Despite the many benefits of PBF, there are still some limitations associated with the materials to be built. A critical industrial limit is the aging of PA12 powder,
Achille Gazzerro   +3 more
openaire   +3 more sources

A detailed evaluation of surface, thermal, and flammable properties of polyamide 12/glass beads composites fabricated by multi jet fusion

open access: yesVirtual and Physical Prototyping, 2021
Multi jet fusion (MJF) is an emerging powder three-dimensional (3D) printing technology with an ultrafast printing speed, in which polyamide 12 (PA12) is the main material currently utilised.
Binbin Guo   +3 more
doaj   +1 more source

Nanoclay/Polymer Composite Powders for Use in Laser Sintering Applications: Effects of Nanoclay Plasma Treatment [PDF]

open access: yes, 2017
Plasma-etched nanoclay-reinforced Polyamide 12 (PA12) powder is prepared with its intended use in selective laser sintering (LS) applications. To replicate the LS process we present a downward heat sintering (DHS) process, carried out in a hot press, to ...
Almansoori, A.   +2 more
core   +2 more sources

Crystal transition and thermal behavior of Nylon 12

open access: yese-Polymers, 2020
The polyamide 12 (PA12) with different crystal forms is prepared with three crystallization paths. The crystal structures and corresponding thermal properties are systematically investigated.
Ma Ning   +8 more
doaj   +1 more source

Mechanisms of rapid fracture in PA12 grades

open access: yesTheoretical and Applied Fracture Mechanics, 2022
Abstract Evidence is presented for an adiabatic decohesion mechanism of Rapid Crack Propagation (RCP) in polyamide (PA) 12. RCP was induced in pipe specimens using the Small–Scale Steady–State (S4) test. Fractography revealed a surface of “flakes” attached to the bulk through highly fibrillated regions.
Mario Messiha   +4 more
openaire   +2 more sources

Non-Solvent- and Temperature-Induced Phase Separations of Polylaurolactam Solutions in Benzyl Alcohol as Methods for Producing Microfiltration Membranes

open access: yesColloids and Interfaces, 2023
The possibility of obtaining porous films through solutions of polylaurolactam (PA12) in benzyl alcohol (BA) was considered. The theoretical calculation of the phase diagram showed the presence of the upper critical solution temperature (UCST) for the ...
Svetlana O. Ilyina   +2 more
doaj   +1 more source

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