Results 21 to 30 of about 7,137,187 (288)

A comprehensive characterisation of Laser Sintered Polyamide-12 surfaces

open access: yesPolymer Testing, 2022
Polymer Laser Sintering (LS) is a powder-based Additive Manufacturing (AM) process known for its ability to produce highly complex geometries. The powder-based nature of the process means it intrinsically produces components with characteristic surface ...
Kieran Nar   +2 more
doaj   +1 more source

Comparative Evaluation of Sorption, Solubility and Microhardness of Heat Cure Polymethylmethacrylate Denture Base Resin & Flexible Denture Base Resin [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2014
Aim: The aim of the study was to evaluate and compare sorption, solubility and microhardness of heat cure polymethylmethacrylate (PMMA) denture base resin and flexible (thermoplastic polyamide nylon) denture base resin.
Jay Shah   +4 more
doaj   +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   +1 more source

Evolution of dispersion of carbon nanotubes in Polyamide 11 matrix composites as determined by DC conductivity [PDF]

open access: yes, 2012
Double-walled Carbon NanoTubes (DWCNTs) have been dispersed in a Polyamide 11 (PA11) matrix by two routes: in the solvent way, Polyamide 11 was first dissolved in its solvent to ensure a liquid state dispersion of carbon nanotubes by ultrasonic way; in ...
Levallois, Franck   +5 more
core   +1 more source

Effect of process conditions on temperature distribution in the powder bed during laser sintering of

open access: yesJournal of Thermal Engineering, 2015
A sintered part‟s mechanical properties are often variable dependent on the temperature at which it was sintered. Prior research has investigated how predefined process conditions (such as scan speed and laser power) in the „Sinter‟ software affect built
Jack Nelson   +6 more
doaj   +1 more source

Development of material-adapted processing strategies for laser sintering of polyamide 12

open access: yesAdvanced Industrial and Engineering Polymer Research, 2021
Laser sintering of polymers (LS) is one of the most promising additive manufacturing technologies as it allows for the fabrication of complexly structured parts with high mechanical properties without requiring additional supporting structures.
S. Greiner   +3 more
doaj   +1 more source

Strain rate dependency of laser sintered polyamide 12

open access: yesEPJ Web of Conferences, 2015
Parts processed by Additive Manufacturing can now be found across a wide range of applications, such as those in the aerospace and automotive industry in which the mechanical response must be optimised.
Cook J.E.T.   +2 more
doaj   +1 more source

Permeability and chemical analysis of aromatic polyamide based membranes exposed to sodium hypochlorite [PDF]

open access: yes, 2011
In this study, a cross-linked aromatic polyamide based reverse osmosis membrane was exposed to variable sodium hypochlorite ageing conditions (free chlorine concentration, solution pH) and the resulting evolutions of membrane surface chemical and ...
Causserand, Christel   +9 more
core   +1 more source

A new kinetic model for predicting polyamide 6-6 hydrolysis and its mechanical embrittlement [PDF]

open access: yes, 2012
PA 6-6 hydrolysis at 60, 70, 80 and 90 °C in distilled water has been studied by Fourier transform infrared spectroscopy, viscometry in molten state, differential scanning calorimetry and uniaxial tensile testing.
COLIN, Xavier   +3 more
core   +1 more source

Quantification of isothermal crystallization of polyamide 12: Modelling of crystallization kinetics and phase composition [PDF]

open access: yesPolymer, 2018
The crystallization of Polyamide 12 (PA12) has been investigated using a new experimental setup which allows in-situ synchrotron Wide Angle X-ray Diffraction (WAXD) during Flash-DSC measurements. The experimental results are used to parameterize and validate a new numerical model to quantify the quiescent crystallization kinetics, under isothermal ...
Paolucci, F.   +4 more
openaire   +1 more source

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