Preparation of flexible SiO2 nanofiber aerogel/basalt composite fabrics and research on fireproof and heat insulation performance

Fire protection and thermal insulation clothing is an important protective equipment in the process of fire fighting and rescue, and it is of great significance to enhance its thermal protection effect. This paper adopts the in situ synthesis of SiO2-based fiber aerogel with excellent thermal insulation function and basalt fabric with flexible high temperature resistance and excellent mechanical properties, after which TiO2 nanoparticles are uniformly dispersed in the resin solution, and then the composite material is applied to the surface of basalt fabric using the impregnation process to prepare a composite fabric with excellent thermal stability and thermal insulation properties. The results show that the fineness of the fiber increases with the increase of PVA concentration, and gradually becomes stable at 10% concentration and the heat insulation performance is the best. When the amount of aerogel pre-dispersion is 20 ml, the temperature can be kept below 70 at 100 °C. TiO2 can reduce the infrared radiation transmittance, and when the addition amount is 10%, it has a good protection effect on the fabric. The development of this fabric has important practical significance and application value for fire protection, industrial production, building insulation, and other fields.