Results 171 to 180 of about 3,120 (211)

Influence of post-condensation on the crystallization kinetics of PA12: From virgin to reused powder [PDF]

Polymer, 2019
The effect of prolonged storage at elevated temperatures on the isothermal crystallization kinetics of Polyamide 12 (PA12), the most used polymer in selective laser sintering (SLS), has been studied by means of Flash DSC experiments.
Gerrit Peters, L E Govaert
exaly   +3 more sources

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A new macroinitiator for the synthesis of triblock copolymers PA12‐b‐PDMS‐b‐PA12

Journal of Applied Polymer Science, 2006
AbstractA new PDMS macroinitiator is proposed for the anionic ring‐opening polymerization of lactams. This α,ω‐dicarbamoyloxy caprolactam PDMS macroinitiator was readily obtained in quantitative yield, by an original synthesis scheme in two steps, which involved the scarcely reported reaction of isocyanates with silanol groups.
Rached, Rabih, Hoppe, S., Jonquières, Anne, Lochon, Pierre, Pla, Fernand   +4 more
openaire   +2 more sources

Non-isothermal crystallization kinetics and thermal behaviour of PA12/SEBS-g-MA blends [PDF]

Bulletin of Materials Science, 2015
International audienceThe thermal behaviour and crystallization kinetics of PA12/SEBS-g-MA blends were investigated under non-isothermal and isothermal conditions using thermogravimetric analysis and differential scanning calorimetry, respectively.
Rodolphe Sonnier, Maiti S N, S N Maiti
exaly   +2 more sources

Effects of Laser Power and Hatch Orientation on Final Properties of PA12 Parts Produced by Selective Laser Sintering [PDF]

Polymers, 2022
Poly(dodecano-12-lactam) (commercially known as polyamide “PA12”) is one of the most resourceful materials used in the selective laser sintering (SLS) process due to its chemical and physical properties.
Sébastien Vaudreuil, Hr Vanaei, Anouar El Magri   +2 more
exaly   +2 more sources

External Calibration in PA12 Tube Extrusion

International Polymer Processing, 2005
Abstract Elongation at break is one of the major end-use properties of polyamide 12 extruded tubes. It is strongly affected by the tube microstructure and the molecular orientation resulting from extrusion conditions. Molecular orientation was characterized by X-ray diffraction and birefringence evaluation in light microscopy ...
Carin, Aurélien, Haudin, Jean-Marc, Vincent, Michel, Monasse, Bernard, Bellet, Gaëlle, Amouroux, Nicolas   +5 more
openaire   +2 more sources

Saturation ESR spectroscopy of PA12 polyamide

European Polymer Journal, 2004
Abstract This work presents the results of our EPR study of polyamide 12 (PA12) –[NH–(CH2)11–CO]n–NH–(CH2)11–CO–. In this study the spin probe method with “conventional” or “continuous saturation” at low temperatures (4–260 K) was used. The aim of our investigation was to determine if it possible to obtain the saturation effects and establish ...
F. Lembicz, D. Podgórska, R. Ukielski, M. Piątek   +3 more
openaire   +1 more source

Mechanical properties of PA6/PA12 blend specimens prepared by selective laser sintering [PDF]

Polymer Testing, 2012
The use of polymeric blends can increase the range of structures and properties of selective laser sintering (SLS) parts. This study investigates the processing of a binary polar system using polyamide 6 (PA6) and polyamide 12 (PA12) by SLS.
Pires, A.T.N., Leite, J.L., Vieira, L.F., Roesler, C.R.M., A.T.N. Pires, C.R.M. Roesler, Salmoria, G.V., G.V. Salmoria, J.L. Leite, L.F. Vieira   +9 more
exaly   +2 more sources

External Calibration in PA12 Tube Extrusion

International Polymer Processing, 2006
Abstract In polyamide 12 (PA12) tube extrusion, calibration is crucial for the major final properties such as elongation at break or burst pressure. In external calibration, the extruded tube is pulled through a cylindrical calibrator located in a water tank under vacuum.
A. Carin, J.-M. Haudin, M. Vincent, B. Monasse, G. Bellet, N. Amouroux   +5 more
openaire   +1 more source

Compounding of PA12/Clay Nanocomposites

2011
Due to its excellent thermal and electrical conductivity properties, nanocomposites are increasingly attracting the interest of scientists in various fields from packaging, automotive and all to the application in biomedicine. Nevertheless, until recently their use in science was very poorly.
Raos, Pero, Stojšić, Josip
openaire   +2 more sources

Electrical Properties Investigation in PA12/PANI Composites

Macromolecular Symposia, 2010
AbstractSummary: Volume conducting PA‐12 based composites powders were chemically prepared by in situ polymerization and aniline doping at room temperature. These kinds of polyamide / PANI composites were investigated regarding their electrical properties. Their ac and dc electrical properties measured in the frequency range of 10−2–107 Hz are reported
Dounia zed Mezdour, Mohamed Tabellout, Salah Sahli, Kateryna Fatyeyeva   +3 more
openaire   +1 more source