通过调整基于磷酸三丁酯灰和矿渣废料的多孔地质聚合物的化学成分来改善其性能。

Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition.

作者信息

Yatsenko Elena A, Goltsman Boris M, Trofimov Sergei V, Kurdashov Viktor M, Novikov Yuri V, Smoliy Victoria A, Ryabova Anna V, Klimova Lyudmila V

机构信息

The Department "General Chemistry and Technology Silicates", Faculty of Technology, Platov South-Russian State Polytechnic University (NPI), Prosveshcheniya Street 132, Rostov Region, 346428 Novocherkassk, Russia.

出版信息

Materials (Basel). 2022 Mar 31;15(7):2587. doi: 10.3390/ma15072587.

DOI:10.3390/ma15072587

PMID:35407919

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9000881/

Abstract

The possibility of improving the properties of porous geopolymer materials based on ash and slag waste from thermal power plants by adjusting their chemical composition is considered. An X-ray phase analysis of ash and slag wastes was carried out, the geopolymers' precursor compositions were calculated, and additives to correct their chemical composition were selected. The samples were synthesized and their physical and mechanical properties (density, porosity, compressive strength, thermal conductivity) were analyzed. The micro- and macro-structure of the samples and the pore distribution of the obtained geopolymers were studied and pore-distribution histograms were obtained. The influence of Si:Al ratio on structural changes was described. The geopolymers' phase composition was studied, consisting of an amorphous phase and high quartz and mullite. A conclusion about the applicability of this method for obtaining high-quality porous geopolymers was made.

摘要

考虑了通过调整化学成分来改善基于热电厂灰渣废料的多孔地质聚合物材料性能的可能性。对灰渣废料进行了X射线相分析，计算了地质聚合物的前驱体组成，并选择了用于校正其化学成分的添加剂。合成了样品并分析了它们的物理和机械性能（密度、孔隙率、抗压强度、热导率）。研究了样品的微观和宏观结构以及所得地质聚合物的孔隙分布，并获得了孔隙分布直方图。描述了硅铝比对结构变化的影响。研究了地质聚合物的相组成，其由非晶相、高石英和莫来石组成。得出了该方法用于获得高质量多孔地质聚合物的适用性结论。