Results 101 to 110 of about 3,120 (211)

Powder Aging Effects on Mechanical and Fire Properties of a Flame Retardant PA12 in Laser Powder Bed Fusion

Polymer Testing
Flame retardant polymer based powders for laser based powder bed fusion (PBF-LB/P) are currently not reusable. This leads to crucial economic and environmental disadvantages of the process, when using flame retardant powder. In this study, we demonstrate
Paul Roumeliotis, Samuel Schlicht, Rainer Detsch, Qaisar Nawaz, Aldo R. Boccaccini, Dietmar Drummer   +5 more
doaj   +1 more source

Recovery of residual polyamide (PA12) from polymer powder bed fusion additive manufacturing process through a binder jetting process [PDF]

Purpose This study aims to propose the reuse of PA12 (powder) in another AM process, binder jettiinng, which is less sensitive to the chemical and mechanical degradation of the powder after multiple cycles in the laser system.
Aide Aracely Maldonado-Macías, Santos-Adriana Martel-Estrada, Julian Aguilar-Duque, Eric MacDonald, Sergio Esteban Arbelaez-Rios, Cesar Omar Balderrama Armendariz   +5 more
core   +1 more source

Influence of Molecular Weight Average, Degree of Crystallinity, and Viscosity of Different Polyamide PA12 Powder Grades on the Microstructures of Laser Sintered Part

MATEC Web of Conferences, 2015
Laser Sintering (LS) allows functional parts to be produced in a wide range of powdered materials using a dedicated machine, and is thus gaining popularity within the field of rapid prototyping.
Yusoff WAY, Ani Hanafi, Pham DT, Dotchev K.   +3 more
doaj   +1 more source

Dynamik der Wasseraufnahme von PA12-Pulver/Analysis of the moisture behaviour of PA12 powders for selective laser sintering (SLS)

wt Werkstattstechnik online
Die additive Fertigung von Kunststoffen, insbesondere das selektive Lasersintern (SLS), steht vor der industriellen Serienfertigung. Die Pulveraufbereitung spielt dabei eine entscheidende Rolle. Ein ungelöstes Problem ist die Befeuchtung des Pulvers, um die elektrostatische Aufladung zu reduzieren. Klare Richtlinien fehlen bisher.
Mark Becker, Max Krichenbauer, Simon Höhn, Patrick Springer   +3 more
openaire   +1 more source

Polyamide12‐Meta‐Composites with Excellent Mechanical Performance, Shape‐Memory, Flame Retardancy and 3D/4D Printability

Macromolecular Materials and Engineering
Achieving multifunctional polymer composites that combine mechanical strength, thermal stability, flame retardancy, and shape‐memory capability while remaining compatible with additive manufacturing remains challenging.
Kaveh Rahmani, Keun Park, Mahdi Bodaghi
doaj   +1 more source

IN-SITU POLYMERISATION OF PA12 FOR THERMOPLASTIC COMPOSITES PROCESSING

, 1999
A major difficulty in processing thermoplastic composites is to achieve cost-effective and high-quality impregnation of the fibre reinforcement by the matrix resin. The aim of this work is to improve impregnation prior to in-situ polymerisation of Polyamide 12 (PA12) by exploiting a very low monomer viscosity (7.10-3 Pa.s).
A. LUISIER, P.-E. BOURBAN, J.-A. E. M�NSON   +2 more
openaire   +2 more sources

Enhanced interfacial and mechanical properties of carbon fabric/PA12 composites via grafting silanized nano hexagonal boron nitride onto the fibers [PDF]

The purpose of this work was to create thermoplastic composites based on carbon fiber fabric reinforced enhanced mechanical and interfacial properties, based on PA12 (polyamide 12).
Dogu, Mustafa, DERUN, Emek, Ozbas, Reyhan   +2 more
core   +1 more source

Influence of Graphene Oxide on Printability, Rheological and Mechanical Properties of Highly Filled Alumina Filaments and Sintered Parts Produced by FFF

Applied Sciences
The aim of the study was to investigate the effect of the addition of graphene oxide (GO) on the rheological and mechanical properties of extruded polyamide 12 (PA12) filaments with high aluminum oxide (Al2O3) content used for 3D printing using the fused
Ekaterina Kuznetsova, Anton Smirnov, Andrey V. Gusarov, Nestor Washington Solís Pinargote, Tatiana V. Tarasova, Sergey N. Grigoriev   +5 more
doaj   +1 more source

In Vitro Biofilm Formation Kinetics of Pseudomonas aeruginosa and Escherichia coli on Medical-Grade Polyether Ether Ketone (PEEK) and Polyamide 12 (PA12) Polymers

Hygiene
Biofilms, structured communities of microorganisms encased in an extracellular matrix, are a major cause of persistent infections, particularly when formed on medical devices.
Susana Carbajal-Ocaña, Kristeel Ximena Franco-Gómez, Valeria Atehortúa-Benítez, Daniela Mendoza-Lozano, Luis Vicente Prado-Cervantes, Luis J. Melgoza-Ramírez, Miguel Delgado-Rodríguez, Mariana E. Elizondo-García, Jorge Membrillo-Hernández   +8 more
doaj   +1 more source

Study of in situ anisotropy in the selective laser sintering process of powder PA12-CF [PDF]

, 2016
W pracy omówiono podstawy laserowego, selektywnego spiekania proszkowego tworzywa polimerowego jako jednej z wiodących technologii przyrostowego wytwarzania modeli użytkowych i prototypów.
Zimniak, P.
core