Synthesis of Epoxy Sulfonated Phenolic Resin and it's Effects on the Coal-Water Slurry

Abstract:

As a kind of raw material, phenol was sulfonated by sulfuric acid, polymerized by fomaldehyde, and grafted by epoxy chloropropane to get the epichlorohydrin modified sulfonated phenolic resin dispersant, which is used in coal water slurry (CWS). Studies on rheological behaviours of CWS with different concentrations and syneresis rates during 72h storing were carried out to analyze the interaction between the dispersants and the surfaces of Shenhua coal of Shaanxi in China. The results show that the CWS had a syneresis rate of 5.9% and an apparent viscosity of 725mPa.S at a shearing rate of 100S-1 when the mass fractions of coals and dispersants are 64% and 0.5% respectively. Epoxy chains of the dispersant combine with the hydrophobic groups on coal surfaces and sulfonic acid groups of the dispersant are hydrophilic. This dispersant increases the stabilities of CWS effectively through steric hindrance effect to keep the coal particles from gathering.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 2844-2847
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.2844
• Online since: July 2012
• Authors: Guang Hua Zhang, Ting Shang, Long Liu
• Keywords: Coal-Water Slurry Dispersant, Epoxy Chloropropane, Sulfonated Phenolic Resin

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