Preparation method of inorganic mineral material modified inorganic silicon resin

Abstract

The invention discloses a preparation method of inorganic mineral material modified inorganic silicon resin, which comprises the following steps: putting a silica sol solution with the pH value of 8-11 into a reaction kettle, heating to 50-80 DEG C, and continuously stirring; dropwise adding a hydrophilic organic silicon monomer accounting for 1.5%-3% of the mass of the silica sol solution, keeping the temperature in the step S1 unchanged, and reacting for 3-4 hours to finish copolymerization; reducing the temperature to 50-60 DEG C, dropwise adding 1-3% of hydrophobic organic silicon monomer, reacting for 5-6 hours, and finishing copolymerization again; adding flaky or acicular inorganic mineral powder accounting for 5%-20% of the mass of the silica sol solution into the resin obtained in the step S3, increasing the rotating speed to 500-1000 revolutions per minute, and continuously reacting for 1-2 hours; and through the arrangement, the nano inorganic silicon resin prepared by the method has good film-forming property and hydrophobicity, can be used for preparing a pure inorganic building coating, and can also be compounded with a common emulsion to produce an inorganic building coating meeting industrial standard provisions.

Description

technical field [0001] The invention relates to the field of inorganic coatings, in particular to a preparation method of inorganic mineral material modified inorganic silicone resin. Background technique [0002] Inorganic coatings are inorganic polymer coatings composed of inorganic polymers and dispersed and activated metals, metal oxide nanomaterials, and rare earth ultrafine powders. They can quickly react with iron atoms on the surface of steel structures to form a dual protective effect of physics and chemistry. , the inorganic polymer anti-corrosion coating that is firmly combined with the substrate through chemical bonds, has no pollution to the environment, has a long service life, and its anti-corrosion performance has reached the international advanced level. It is a high-tech replacement product that meets environmental protection requirements. [0003] Potassium silicate inorganic exterior wall coatings and silica sol inorganic exterior wall coatings have begun...

AI Technical Summary

Problems solved by technology

[0004] However, these two inorganic exterior wall coatings have the following disadvantages after long-term use and testing: the compatibility of potassium silicate inorganic coatings is too poor, and special emulsions, additives, colorants, and powders are required for storage. Poor stability, slow film formation, poor early water resistance and scrub resistance, long curing time, accompanied by salting-out phenomenon, causing blooming

However, silica sol inorganic coatings form too fast, shrink violently during drying, and are too rigid. Water resistance, compatibility, and color development are slightly better than potassium silicate, but there is still a gap from the actual requirements.

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