Effect of PA12 powder recycling on properties of SLS 3D printed parts including their hygroscopicity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00598214" target="_blank" >RIV/68378297:_____/24:00598214 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/24:39921802 RIV/61989100:27230/24:10255660 RIV/71226401:_____/24:N0100968

Result on the web

<a href="https://doi.org/10.1016/j.eurpolymj.2024.113432" target="_blank" >https://doi.org/10.1016/j.eurpolymj.2024.113432</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2024.113432" target="_blank" >10.1016/j.eurpolymj.2024.113432</a>

Result language

angličtina

Original language name

Effect of PA12 powder recycling on properties of SLS 3D printed parts including their hygroscopicity

Original language description

The ageing and recycling of polyamide 12 (PA12) powder are key issues in selective laser sintering (SLS) processing, while hygroscopicity is an important defect of PA12 products during use. This paper aims to correlate PA12 powder recycling with changes in the hygroscopicity of printed parts, which is significant for a comprehensive understanding of the impact of ageing on the performance of PA12 parts. PA12 powder was utilized in different grades: virgin, post-industrial recycled, and virgin-post-industrial recycled mixture (virgin-to-post-industrial recycled powder weight ratio of 25/75). The mutual effects of the powder grade, print orientation used in the building process, and absorbed moisture on the properties of printed parts were evaluated. Molar mass increase and secondary crystallization have been demonstrated in the post-industrial recycled powder, being responsible for the worse sintering quality in the SLS process. Therefore, the printed parts made from the post-industrial recycled powder or the virgin-post-industrial recycled powder mixture exhibited worse mechanical strength, a higher porosity, and hence a higher level of hygroscopicity in terms of moisture absorption and wettability. On the contrary, the printed parts made from the virgin powder were found to be more moisture-sensitive in terms of the decline in mechanical strength in the wet state because of the higher content of the amorphous phase holding the plasticizing water.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Polymer Journal

ISSN

0014-3057

e-ISSN

1873-1945

Volume of the periodical

220

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

113432

UT code for WoS article

001318132700001

EID of the result in the Scopus database

2-s2.0-85203877983