@ARTICLE{Xue_Ao_Effect_2024,
 author={Xue, Ao and Tang, Yuhan and Li, Yao and Dai, Weihong and Lu, Jijun and Wang, Huafang},
 volume={vol. 24},
 number={No 3},
 pages={94-100},
 journal={Archives of Foundry Engineering},
 howpublished={online},
 year={2024},
 publisher={The Katowice Branch of the Polish Academy of Sciences},
 abstract={In this work, a new method of near-infrared curing 3D printing sodium silicate sands (NIRC3DPSSS) driven by photovoltaic cells was proposed, and the Span-80 moisture resistance modifier was studied. NIRC3DPSSS had the advantages of high strength, rapid curing and low residual strength. However, the 24h storage strength would reduce because Na+ in the bonding bridges could absorb moisture. The experimental results showed that the strength of Span-80 modified sands molds reached 0.95MPa after 4 hours in a humidistat with 99%RH (relative humidity) containing 2.2% sodium silicate, an increase of 97.9% comparing to common sands molds. In air(80%RH), the strength reached 1.25MPa, an increase of 40.4%. The optimal effect of modification was achieved when Span-80 was 0.066% of the raw sands. Additionally, the bonding film and bridges in sodium silicate sands modified with Span-80 were more stable, smoother and free of cracks when observed using scanning electron microscopy (SEM) and energy dispersive spectroscopy(EDS).},
 type={Article},
 title={Effect of Span-80 to Moisture Resistance of Near-infrared Curing 3D Printing Sodium Silicate Foundry Sands},
 URL={http://journals.pan.pl/Content/132885/AFE%203_2024_14-Final.pdf},
 doi={10.24425/afe.2024.151297},
 keywords={Sodium silicate sands, Span-80, Near-infrared curing 3D printing, Moisture resistance},
}