为了减少三乙醇胺的使用成本,提高其助磨和增强效果,用一元有机酸盐化三乙醇胺合成DOGA系列水泥助磨剂.通过分析水泥粉体的比表面积、筛余量、粒度分布以及水泥硬化浆体的抗压强度、TG-DSC,研究DOGA系列水泥助磨剂对水泥性能的影响.结果表明,以三乙醇胺为参比项,DOGA系列水泥助磨剂改善了助磨和增强效果,其中DOGA3的助磨和增强效果最好,在最佳掺量0.05%时,45 μm筛余降低21.1%、比表面积增加了21 m2/kg、3~32 μm增加了2.14%,3 d、28 d抗压强度分别提高了2.1 MPa、4.4 MPa.
In order to reduce the cost of using triethanolamine and improve its grinding and strengthening effect, DOGA series cement grinding aids were synthesized by salinizing triethanolamine with monobasic organic acid.The effects of DOGA series cement grinding aids on cement properties were studied by analyzing the specific surface area,sieve residue,particle size distribution,TG-DSC and compressive strength of cement hardened paste.The results show that DOGA series cement grinding aids improve the grinding and strengthening effect, a reference sample is made with triethanolamine,and DOGA3 has the best grinding and strengthening effect.When the added amount of DOGA3 is 0.05%, 45 μm sieve residue decreased by 21.1%, specific surface area increased by 21 m2/kg,3-32 μm increased by 2.14%, 3 d and 28 d compressive strength increased by 2.1 MPa and 4.4 MPa, respectively.
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