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Development of new polyimide powder for selective laser sintering

Published online by Cambridge University Press:  27 August 2019

Gleb Vaganov ,
Andrey Didenko ,
Elena Ivan’kova ,
Elena Popova ,
Vladimir Yudin ,
Vladimir Elokhovskii  and
Irena Lasota
Gleb Vaganov*
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Andrey Didenko
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Elena Ivan’kova
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Elena Popova
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Vladimir Yudin
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Vladimir Elokhovskii
Affiliation:
Laboratory of Polymer Mechanics and Composite Materials, Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg 199004, Russia
Irena Lasota
Affiliation:
Department of Research and Development in the field of Laser and Hybrid Laser-Arc Technology, Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg 195251, Russia
*
a)Address all correspondence to this author. e-mail: glebvaganov@mail.ru
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Abstract

A comparative study of properties of the films based on polyimide powders synthesized by chemical or thermal imidization is presented. It is shown that the imidization method affects the shape, size, bulk density, and size distribution of the synthesized polyimide powder particles, which influences the properties of the films obtained. The method of chemical modification allows to obtain denser powders comparing to the thermally imidized powder. The films were obtained with the help of selective laser sintering (SLS) for the first time. It is shown that the films produced by SLS from chemically imidized polyimide powder are more dense and monolithic as compared to those made from thermally imidized polyimide, which provides, obviously, higher mechanical characteristics of the former. They have the strength higher in 2.5 times and the elastic modulus twice as high than latter one. The optimal laser power is 65 W.

Keywords

polymerpowder processinglaser

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Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 16 , 28 August 2019 , pp. 2895 - 2902
Copyright
Copyright © Materials Research Society 2019 

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