Selective laser sintering of polymer compositions based on polyamide 12

Sorokin A.E., Platonov M.M., Larionov S.A.
Sorokin A.E., Platonov M.M., Larionov S.A. Selective laser sintering of polymer compositions based on polyamide 12 // Proceedings of VIAM. 2017. No. 9. DOI: 10.18577/2307-6046-2017-0-9-5-5. URL: https://test.viam.ru/en/journal/2017/9/5
Keywords
powder composition, polyamide 12, selective laser sintering, 3D printing, density, fractional composition, melting, crystallization.
Abstract

Studies of crystallization from solution and processing by selective laser alloying of polyamide 12 based compositions have been carried out. It has been shown that process of crystallization under conditions close to equilibrium in the presence of nanoscale silicon dioxide makes it possible to obtain powder compositions with an optimal complex of properties. It has been found that Powder compositions with a narrow particle size distribution (from 20 to 100 μm) and a bulk density of not less than 0,4 g/cm3 can be processed by selective laser sintering into homogeneous samples with a high degree of monolithicity.

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