A kind of fast-curing water-based epoxy concrete repair coating and preparation method thereof

Abstract

The invention relates to the field of coatings, in particular to a fast-curing water-based epoxy concrete repair coating and a preparation method thereof. The repair paint includes the following preparation raw materials by weight percentage: 5-7% of water-based epoxy resin emulsion, 3-4% of curing agent, 7-9% of water, 0.1-0.3% of defoamer, 40-40% of white cement 55%, quartz sand 20-35%, color paste 4-8%, polycarboxylate superplasticizer 0.15-0.3% and expansion agent 0.5-0.8%. The water-based epoxy concrete repair coating has the advantages of short setting time, fast curing speed, strong corrosion resistance, heavy load resistance, high compression resistance, high wear resistance, soft and beautiful color, etc. When used as maintenance and repair materials, There will be no obvious connection seams on the fracture surface, and the repaired position has good crack resistance, flexural strength and compressive strength. In addition, the preparation process is simple to operate, no sewage and harmful gases are generated, safe, reliable, energy-saving and environmentally friendly.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a fast-curing water-based epoxy concrete repair coating and a preparation method thereof. Background technique [0002] Repair coatings are ground repair materials used for interior floor coating finishes in buildings. At present, the commonly used ground repair materials are paint and quick-drying cement. Among them, paint repair can ensure the same color, but since the paint is mainly painted on the cement mortar base, it is required to have good alkali resistance and good adhesion with the cement mortar to ensure that it will not fall off or peel during use. . In addition, paint repair also requires that the base surface must be flat, clean, dry, and firm. Multi-layer construction is required to make the surface flatness meet the design requirements. Otherwise, problems such as coloring, wrinkling, scratches and cracks, and poor covering power are likely to occur. . On the other ha...

AI Technical Summary

Problems solved by technology

However, this repair material needs to be added with inorganic salt accelerators such as sodium aluminate or lithium carbonate to quickly hydrate and harden the cement, so as to ensure the construction requirements and increase the cost. Moreover, inorganic salts such as sodium aluminate are inhaled through the human respiratory tract, which is easy to cause Bauxite lung, there are construction safety hazards

Images