Silica sol adhesive for investment casting, preparation method thereof, and slurry

The invention discloses a silica sol adhesive for investment casting, a preparation method thereof, and slurry. The silica sol adhesive comprises alkaline silica sol, an enhancer, a cross-linking agent and a stabilizer, wherein the enhancer is a soluble polymer, the molecular weight of the soluble polymer is sixty thousand to one hundred thousand, the stabilizer comprises a moisture stabilizer anda pH stabilizer, the mass percent of SiO2 in the alkaline silica sol is 10% to 15%, the mass percent content of the alkaline silica sol accounts for 30% to 50% of the silica sol adhesive, the mass percent content of the enhancer accounts for 1% to 3% of the silica sol adhesive, the mass percent content of the cross-linking agent accounts for 1.2% to 5.4% of the silica sol adhesive, and the mass percent content of the stabilizer accounts for 1.5% to 2.7% of the silica sol adhesive. The performance of the silica sol adhesive is improved. 一种熔模铸造用硅溶胶粘合剂及其制备方法、浆料，其中硅溶胶粘合剂包括：碱性硅溶胶；增强剂，增强剂为可溶性高聚物，可溶性高聚物的分子量为6万至10万；交联剂；稳定剂，稳