Preparation of polyamide 12 powder for additive manufacturing applications via thermally induced phase separation-Reference-Cited by-同舟云学术

Preparation of polyamide 12 powder for additive manufacturing applications via thermally induced phase separation

Published:2022-01-01 Issue:1 Volume:22 Page:553-565
ISSN:1618-7229
Container-title:e-Polymers
language:en
Short-container-title:

Author:

Su Dandan¹,Yang Jingkui²,Liu Shan²³,Ren Lulu²,Qin Shuhao¹⁴

Affiliation:

1. Department of Polymer Materials and Engineering, College of Materials Science and Metallurgy, Guizhou University , Guiyang 550025 , China

2. R&D Department, National Engineering Research Center for Compounding and Modification of Polymer Materials , Guiyang 550014 , China

3. College of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China

4. National Engineering Research Center for Compounding and Modification of Polymer Materials , Guiyang 550014 , China

Abstract

Abstract Spherical polyamide 12 (PA12) powder for selective laser sintering (SLS) was prepared by thermally induced phase separation (TIPS) method. It was authenticated that the mixed solvent can regulate the liquid–liquid phase separation (LLPS) process by changing the ratio of diluent to non-diluent. The polymer droplets mainly coalesced in the solution, and then the crystal nucleus of PA12 was formed in the droplets. Finally, high crystallinity PA12 powder was precipitated. The morphology, particle size distribution, thermal properties, the change of crystal structure, and powder spreading performances of the obtained powder were characterized. The powder had a narrow particle size distribution, an average particle size of 55.2 μm, and a broad sintering window of 29°C. The results exhibited that the powders prepared by TIPS had excellent sintering properties, and TIPS method provided more choices for SLS technology.

Publisher

Walter de Gruyter GmbH

Subject

Polymers and Plastics,Physical and Theoretical Chemistry,General Chemical Engineering

Link

https://www.degruyter.com/document/doi/10.1515/epoly-2022-0050/pdf

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