Aerogel thermal insulation material and preparation method thereof and refrigerator

The invention discloses an aerogel thermal insulation material, comprising the following components in percentage by weight: 95-99.9% of silicon dioxide aerogels and 0.1-5% of carbon fiber. The invention further discloses a preparation method for the aerogel thermal insulation material and a refrigerator. The aerogel thermal insulation material disclosed by the invention is free of a foaming agent, is relatively environmental-friendly and safe, and is low in cost. In addition, the aerogel thermal insulation material has an excellent thermal insulation property, the heat conductivity coefficient of the material is 0.0206-0.0226w/(m.k), and the thermal insulation property of the refrigerator is improved, so that the energy-saving effect is achieved; the performance of the material is obviously superior to that of a conventional thermal insulation board; and the material has a huge application potential in refrigerator.