The colloid with nano-size silica particles was synthesized by conventional sol-gel process. Based on the fact that the stability of colloid and the size of nano-silica particle are mainly determined by TEOS content, ammonia concentration, water content, ethanol content and titration speed parameters, as-synthesized colloid was mechanically mixed with methyl trimethoxysilane, an organic with relatively good anti-weathering properties to prepare the organic-inorganic hybrid consolidant (SiO2-OIHC). When OIHC contains 15%-20% methyl trimethoxysilane, the viscosity of SiO2-OIHC with good stability is low, which is close to the viscosity of water, and the gel time is shorter. The SiO2-OIHC hybrid consolidant avoids the tendency to crack inside the pores of stones and drawback that often appears in traditional organic consolidant. Additionally, the color changes of SiO2-OIHC coated stones is small, and the consolidant absorption rate and air permeability are significantly higher than those of single organic consolidant. The ability to resist the acid and salt corrosion of SiO2-OIHC coated stones are improved significantly.%采用溶胶-凝胶法制备含有纳米二氧化硅颗粒的胶体材料.胶体材料的稳定性和纳米二氧化硅颗粒的粒径主要受正硅酸乙酯含量、氨水浓度、水含量、无水乙醇含量和滴定速度等参数的影响,以具有良好综合防风化性能的甲基三甲氧基硅烷为有机物,通过与二氧化硅溶胶的机械混合而制备有机-无机防风化杂化加固材料.研究结果表明:当杂化材料中甲基三甲氧基硅烷的质量分数为15％～20％时,防风化杂化材料的黏度低(接近于水的黏度)、凝胶时间短且稳定性好；胶体颗粒的添加有效地降低了单一有机物加固涂层的开裂概率；防风化杂化加固材料引起试样的色差变化较小,加固吸收率明显比单一有机物的吸收率高,且涂覆防风化杂化加固材料的石质试样,其耐酸和耐盐性显著提高.
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