Date:

2025-04-30

Title of Paper:

Hierarchically Porous Materials Prepared by Selective Laser Sintering

Journal:

Materials and design

Summary:

A novel method to design and manufacture hierarchically porous functional materials is proposed by Selective Laser Sintering (SLS) combined with particulate leaching technique. Hierarchically structured porous nylon materials have been prepared and pore forming mechanism is discussed. Experimental results show that the porous materials contain the pores caused by pore-forming agent dissolution in water and the pores exist inherently in SLS parts, which can be further divided into intraformational pores and interlaminar pores. The interactions of these pores with different shapes eventually form the porous nylon with high connectivity and controllable porosity. The influence of processing parameters and the content of pore-forming agent on porosity and function of water permeability have been studied. Porous nylon filter integrated with complicated structure is designed and directly fabricated by SLS. The fluid infiltration volume is tested and compared with commercially available water purifiers. The filtering precision and rejection test results show that the filtering precision was about 17um and the rejection is up to 95% for the suspension containing particles with the size of 15um-120um.

Co-author:

Mengxue Yan, Xiaoyong Tian*, Gang Peng, Yi Cao, and Dichen Li

Translation or Not:

No

Date of Publication:

2017-09-08