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Research of Compound Additives on Moisture Resistance of Sand Cores Bonded by Sodium Silicate

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Abstract

In this research, the storage performance of sodium silicate-bonded sand core was significantly improved by adding compound additives, including micro-silica powder, PVB ethanol solution and cement. The orthogonal test determined that the optimal addition percentage for sodium silicate binder, micro-silica powder, PVB ethanol solution and cement was 100:35:35:17.5. The storage tensile strength for prepared sand cores was 0.98 MPa under condition of 25 °C and 70% RH for 4 h. According to SEM observation, the bonded bridges inside sand cores with additives were still well connected under humid environment. As suggested by the FT-IR analysis, a complex and dense Si–O–Si network containing more Q3 and Q4 type silicon atoms was formed inside bonding bridges enhancing the connection between sand particles, and the hydrolysis of Si-O-Si network was relieved. Therefore, the storage tensile strength of sand cores was enhanced by adding compound additives.

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References

  1. H. Miao, X. Du, Y. Sun et al., Effect of powder breakdown additives on properties of ester-hardened sodium silicate bonded ceramic sand. Inter Metalcast. 15, 710–718 (2021). https://doi.org/10.1007/s40962-020-00517-z

    Article  CAS  Google Scholar 

  2. L. Zaretskiy, Microsilica in sodium silicate bonded sands. Inter Metalcast. 13, 58–73 (2019). https://doi.org/10.1007/s40962-018-0247-y

    Article  CAS  Google Scholar 

  3. J. Wang, J. Yang, L. Zhao, Study on recycling technology of sodium silicate based on green casting. Found. Technol. 39(03), 533–536 (2018). https://doi.org/10.16410/j.issn1000-8365.2018.03.009

    Article  Google Scholar 

  4. Y. Li, J. Zhao, X. Du et al., The optimization of the properties of sodium silicate bonded ceramic sand by nano-oxide particles and ultrasonication. Inter Metalcast. 16, 234–241 (2022). https://doi.org/10.1007/s40962-021-00601-y

    Article  CAS  Google Scholar 

  5. Li. Yiming, Ye. Qiaoming, Research of modification of Na2B4O7 on the structure and property of sodium silicate. Guangdong Trace Elem. Sci. 10, 66–68 (2006). https://doi.org/10.3969/j.issn.1006-446X.2006.10.017

    Article  Google Scholar 

  6. S. Lai, L. Weihua, Li. Yingmin et al., Humidity-resistant inorganic binder for sand core-making in foundry practice. China Found. 16(4), 267–271 (2018). https://doi.org/10.1007/s41230-019-8169-8

    Article  Google Scholar 

  7. Wu. Xiang-qing, Yu. Fan Zi-tian, Tao., Effect of polyvinyl alcohol on humidity resistance of sodium silicate-bonded sand hardened by microwave reheating. Foundry 6(59), 549–552 (2010)

    Google Scholar 

  8. Deters et al., U.S Patent. Pub. No. 20160136724A1, May. 19, 2016.

  9. Bartels et al., U.S Patent. Pub. No. 20150246387A1, Sep. 3, 2015.

  10. Wang et al., C.N Patent. Pub. No. 104014740 A, Sep. 3, 2014.

  11. Xu. Wang Jina, F.Z. Kaidong, Study on moisture absorption mechanism of sodium silicate sands hardened by typical hardening technology. Hot Work. Technol. 13(41), 45–48 (2012). https://doi.org/10.3969/j.issn.1001-3814.2012.13.014

    Article  Google Scholar 

  12. H. Aguiar, J. Serra, P. González et al., Structural study of sol–gel silicate glasses by IR and Raman spectroscopies. J. Non-Cryst. Solids 8(355), 475–480 (2009). https://doi.org/10.1016/j.jnoncrysol.2009.01.010

    Article  CAS  Google Scholar 

  13. M.S. Morsy, S.H. Alsayed, Y. Al-Salloum et al., Effect of sodium silicate to sodium hydroxide ratios on strength and microstructure of fly ash geopolymer binder. Arab. J. Sci. Eng. 39(6), 4333–4339 (2014). https://doi.org/10.1007/s13369-014-1093-8

    Article  CAS  Google Scholar 

  14. R. Tänzer, Y. Jin, D. Stephan et al., Alkali activated slag binder: effect of cations from silicate activators. Mater. Struct. 50(1), 91 (2016). https://doi.org/10.1617/s11527-016-0961-y

    Article  CAS  Google Scholar 

  15. H. Pengsheng, Molding Sand. Shanghai Scientific and Technical Publishers, 2nd Edition, 1994, p. 216–219.

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Authors and Affiliations

  1. Shenyang University of Technology, Shenyang, 110870, China

    Fang-hai Xin, Wei-hua Liu, Lai Song & Ying-min Li

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  1. Fang-hai Xin
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  2. Wei-hua Liu
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  3. Lai Song
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  4. Ying-min Li
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Correspondence to Wei-hua Liu.

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Xin, Fh., Liu, Wh., Song, L. et al. Research of Compound Additives on Moisture Resistance of Sand Cores Bonded by Sodium Silicate. Inter Metalcast 17, 753–760 (2023). https://doi.org/10.1007/s40962-022-00805-w

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  • DOI: https://doi.org/10.1007/s40962-022-00805-w

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