▎ 摘　　要

NOVELTY - Wearable aerogel composite film comprises radiation insulation layer, heat insulation layer and photothermal conversion layer. The radiation insulation layer is a low surface energy and high infrared reflectivity fiber layer; the gap between the fibers is 500-1000 nm, and the thickness of the radiation insulation layer is 10-50 μm; the heat insulation is a aerogel base film; the pore size of the aerogel is 200-500 nm; the film thickness is 100-1000 μm; the photo-thermal conversion layer is composed of hydrophilic modified high solar light absorption material, the hole is 10- 200 nm, the thickness of the photo-thermal conversion layer is 10-100 μm. USE - The wearable aerogel composite film is used in controlling human body micro-environment (claimed). Can also be used in an air conditioner and a ground heating energy consumption device to adjust indoor temperature of a human body. ADVANTAGE - The composite film has wide source, easy preparation, environmentally friendly, energy-saving and low-carbon, and can reduce the non-renewable energy usage in human micro-environment control aspect, and accurately control temperature and humidity to avoid space limitation, which is good for improving the wearing comfort level of the wearer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the preparation method of the wearable aerogel composite film comprising: (a) dissolving each gram of low surface energy high infrared reflectance fiber in 10-100 ml deionized water to obtain a high infrared reflectance fiber solution; (b) placing the material with high solar light absorption rate into concentrated nitric acid at 80-150°C for 2-8 hours at a mass ratio of 1:2-1:50 to carry out hydrophilic modification, dispersing each gram of hydrophilic high solar absorption rate material in 5-50 ml deionized water to obtain hydrophilic high solar absorbance suspension; and (c) fixing the aerogel film with diameter of 1-30 cm on the filtering device, firstly filtering the 1 -15 ml hydrophilic high sunlight absorptivity suspension liquid on one side of the aerogel film, then filtering the 1-20 ml high infrared reflectivity fiber solution on the other side of the aerogel film, vacuum drying for 2-8 hours at 40-90 ℃ to obtain the product.