Preparation method for ocean engineering reinforced concrete silane emulsion protective agent

Abstract

The invention relates to the field of corrosion protection of ocean engineering materials, and aims to provide a preparation method for an ocean engineering reinforced concrete silane emulsion protective agent. The method comprises the following steps of: previously stirring and dissolving an emulsifier in a reaction kettle by using 40-80 parts by mass of de-ionized water; slowly adding 20-60 parts by mass of silane monomer under high shear force; and then emulsifying at 30-60 DEG C under low-speed stirring for 6-12 hours to obtain uniform stable micro-nano emulsion, namely a product. By using the method, 90 percent of surface water absorption can be reduced, the effect of obstructing erosion of concrete reinforcement by a marine corrosion medium can be achieved, an internal vapor discharge passage is also kept, and internal atmospheric pressure produced to a film layer is reduced. Compared with a pure silane monomer impregnant, the volatilization rate is low, the utilization rate of silane is increased, the infiltration distance is increased, and the full curing time is greatly shortened. Compared with the conventional polysiloxane emulsion, the process is simple, the molecular weight of a filming substance is smaller, the infiltration capacity is stronger, and the filming capacity is higher.

Description

technical field [0001] The invention relates to a preparation method of a silane emulsion protective agent for marine engineering reinforced concrete, belonging to the field of marine engineering material anticorrosion. Background technique [0002] With the construction of the coastal economic belt represented by the blue economic zone, during the "Twelfth Five-Year Plan" period, my country will build a large number of infrastructure, ships and marine engineering equipment in the fields of marine resource development, marine transportation, etc., thus giving birth to the The huge market demand of the marine anti-corrosion industry. [0003] Due to the natural characteristics of strong radiation, high salinity, high humidity, and typhoons in the marine environment, concrete structures will crack and expand, metal materials will be corroded and damaged, and polymer materials will be deformed and deteriorated, so that the service life of traditional engineering materials is onl...

AI Technical Summary

Problems solved by technology

[0012] However, silane monomer is difficult to emulsify directly due to its strong hydrophobicity, volatility, and the characteristics of easy hydrolysis under acid, alkali catalyst and high shear force.

At present, there are no reports on the direct emulsification of silane monomers at home and abroad

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