Research on Non⁃solvent Induced Phase Separation Technology for 3D Printing/Copying Forming

doi:10.19491/j.issn.1001-9278.2020.12.001

Abstract

Abstract:

This article investigated the feasibility of a non-solvent induced phase separation technology for 3D printing/copying forming. With this technology， the three-dimensional polyacrylonitrile products were successfully prepared without any molten materials. Based on the experimental results， the forming process route was determined as follows： the non-solvent induced phase separation method was first used to solidify the product and remove the solvent initially； the resultant product was then heated and evaporated to completely remove the internal solvent. The reduction of water content of the environmental solution could help to improve the size uniformity of the inner hole in the resulting product， reducing the hole size and leading to a more uniform hole distribution. In addition， we investigated the application possibility of this technology for the preparation of high-performance ceramic composites， conductive products and catalyst carriers as well as the application prospects of this forming technology.

Key words: non?solvent induced phase separation, 3D printing and copying, microporous structure, solvent removal

CLC Number:

TQ320.66

MA Haopeng, GAO Lijie, JIAO Zhiwei, MA Jubiao, YANG Weimin∗. Research on Non⁃solvent Induced Phase Separation Technology for 3D Printing/Copying Forming[J]. China Plastics, 2020, 34(12): 1-7.

Figures/Tables 10

Fig.1. Products produced by non?solvent induced phase separation 3D printing/copying technology

Fig.2. Morphology of the product changes with the time of the non?solvent?induced phase separation process

Fig.3. Change of product weight with time of non?solvent induced phase separation process

Fig.4. TG curves of different samples

Fig.5. Morphology of the product during the solvent removal process of the PAN system

Fig.6. Morphology of the PAN/silicon carbide system during solvent removal

Fig.7. Product morphology after non?solvent induced phase separation using different proportions of non?solvents

Fig.8. The tensile properties of products after using different proportions of non?solvents for non?solvent induced phase separation

Fig.9. Ceramic products manufactured by non?solvent induced phase separation 3D printing/copying technology

Fig.10. Polymer?based conductive products manufactured by non?solvent?induced phase separation 3D printing/copying technology

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