Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Development of High?Temperature?Resistant Dust Suppressant for Railway Coal Transportation
A high?temperature?resistant dust suppressant (HTRDS) for railway coal transportation, composed of XG, CMC?Na, PEO, PVA and water, forms a solidified layer on the surface of coal through electrostatic crosslinking and hydrogen bonding. It has a viscosity of 139 mPa·s, a hardness > 35 HD at 40–60 °C, a wind erosion rate of 0.3 % under 12 m s?1, and a good environmental degradation rate.This study develops a high?temperature?resistant dust suppressant (HTRDS) for railway coal transportation: 0.2 % XG, 0.2 % CMC?Na, 0.09 % PEO, 0.20 % PVA, and 99.31 % water (mass concentration). Electrostatic interactions between components enable polymer chains to form multi?point cross?linking, improving solution stability and viscosity. Hydrogen bonding between polymers and water enhances water retention and promotes uniform water loss, forming a thicker and stronger solidified layer on coal. The results show that the viscosity is 139 mPa·s at 25 °C; the hardness of the solidified layer exceeds 35 HD at 40–60 °C; and the wind erosion rate is only 0.3 % under 12 m·s?1. Moreover, the HTRDS also has an approximately 3.7 % higher environmental degradation rate than the commercial product.
» Publication Date: 24/10/2025
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
