글리세린과 MEA 복합재료 분쇄조제의 합성 및 물리적 특성

This research was conducted to improve the grinding efficiency and crushing efficiency by replacing TIPA with organic polymers of glycerine-co-MEA as a grinding aid for cement clinkers in an effort to suggest a solution for the recently emerged cement quality issue. In order to enhance the grinding efficiency of cement clinkers and physical properties of the manufactured cement, organic polymers were synthesized to have both the hydroxyl groups (-OH) that increase grindability within polymer structures and the amine groups (-NHx) that raise compressive strength. Then, the synthetic matter was reviewed on its effect on grindability, rate of strength development, fluidity and other physical properties of cement. The result shows that the optimal synthetic conditions of glycerine-co-MEA have been found at 1:1 of mole fraction, 80℃ of reaction temperature, pH 5.0, and 35 cPs of viscosity to make it the most stable polymers. The grinding efficiency showed improvement compared to that of the DEG and TIPA: the fineness rose by 150～310 cm2/g, while the 45 μm sieve residue rate down 1.6～2.0 %. The compressive strength demonstrates improved grindability by the hydroxyl groups and higher initial strength by the amine groups, both in the alkanolamine-type organic polymers. In comparison with the cases of DEG and TIPA, the strength shows approximately 31 % and 12 % increases, respectively at the age of 1 day, and 19 % and 12 % higher each at the age of 28 days.