Graphene oxide-nano mineral enhanced geopolymer material and preparation method thereof

Abstract

The invention discloses a graphene oxide-nano mineral enhanced geopolymer material and a preparation method thereof. The graphene oxide-nano mineral enhanced geopolymer material comprises the following components in parts by weight: 130-160 parts of a silicon-aluminum mineral raw material, 50-70 parts of an alkali activator, 2-6 parts of nano minerals and 1-3 parts of graphene oxide. The inventionalso discloses a preparation method of the graphene oxide-nano mineral enhanced geopolymer material. The preparation method comprises the following steps: 1) preparing a geopolymer raw material; 2) preparing a graphene oxide-sodium hydroxide solution; 3) preparing a graphene oxide-alkali excitation solution; and 4) preparing the graphene oxide-nano mineral enhanced geopolymer material. The problem of uniform dispersion of nano minerals in the geopolymer system is solved, and the toughness and the strength of the geopolymer material are improved through cooperation of the graphene oxide and the nano minerals by fully utilizing the performance and the dispersion effect of the graphene oxide.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a graphene oxide-nanometer mineral reinforced geopolymer material and a preparation method thereof. Background technique [0002] Geopolymer material is a new type of material with a special inorganic polycondensation three-dimensional oxide network structure. This material is made of minerals rich in silicon and aluminum, and it is produced by alkali excitation reaction with liquid sodium silicate, sodium hydroxide and other solutions. , Geopolymer materials have more excellent properties than traditional silicate materials, including: rapid hardening and early strength, good acid and alkali resistance, fire resistance, high temperature resistance, and high efficiency of solid heavy metal ions. In addition, the raw materials of geopolymers mostly come from industrial wastes such as fly ash, blast furnace slag, mine waste slag, etc. The carbon emissions and energy consumption in...

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Problems solved by technology

[0003] Nano-minerals such as nano-silica, nano-alumina, nano-silicon, and nano-clay can induce the nucleation of geopolymers, reduce the setting time of geopolymer materials, fill pores, and greatly improve the mechanical strength and durability of geopolymers. , but the uniform dispersion of nano-minerals in geopolymers has restricted large-scale applications

The surface of graphene oxide has a good dispersion effect because it has abundant functional groups such as hydroxyl and carboxyl groups, but its unique enhancement performance has not been fully utilized. Therefore, how to make full use of the performance and dispersion effect of graphene oxide to make it Synergistically improving the toughness and strength of geopolymer materials with nano-minerals has become a key issue that needs to be solved urgently