With the development of investment casting, the stringent strength and quick-drying ability of silica sol shell is required. so it is necessary to develop rapid-drying and enhanced silica sol.

• 摘要随着熔模铸造的不断发展，市场对硅溶胶型壳的强度及快干性能提出了更高的要求，发展快干增强硅溶胶成为必然趋势。