Preparation method of aerogel fiber and use

A preparation method of an aerogel fiber, comprising:

• mixing a solvent with a polymer material to form a spinning solution;
• driving the spinning solution with an airflow;
• and
• performing a solvent replacement on the gel fiber and then performing a drying treatment to prepare the aerogel fiber,
• wherein the preparation method further comprises:
• using a spinneret plate as a spinning solution outlet, wherein a spinneret opening of the spinning solution outlet has an opening number of 1-500 and a diameter of 0.07-3 mm, and tapping around the spinneret opening to form an airflow channel so that the airflow drafts the spinning solution to form the jet flow;
• wherein the airflow is dried air, or a mixed airflow of dried air and vapor, with an air pressure of 0.1-5 MPa;
• the vapor comprises one or a combination of more than two of water vapor, alcohol vapor, hydrochloric acid, ammonia gas, and acetone vapor,
• wherein the spinning solution comprises a sol-state, semigel-state or high-viscosity solution;
• and/or the spinning solution has a viscosity of 80-4000cp and a concentration of 0.1-30 wt %.

A preparation method of an aerogel fiber, comprising:

• mixing a solvent with a polymer material to form a spinning solution;
• forming a jet flow, and forming a gel fiber through a sol-gel transition;
• and
• performing a solvent replacement on the gel fiber, wherein the preparation method further comprises:
• using a spinneret plate as a spinning solution outlet, wherein a spinneret opening of the spinning solution outlet has an opening number of 1-500 and a diameter of 0.07-3 mm, and tapping around the spinneret opening to form an airflow channel so that the airflow drafts the spinning solution to form the jet flow;
• wherein the airflow is dried air, or a mixed airflow of dried air and vapor, with an air pressure of 0.1-5 MPa;
• the vapor comprises one or a combination of more than two of water vapor, alcohol vapor, hydrochloric acid, ammonia gas, and acetone vapor,
• wherein the spinning solution comprises a sol-state, semigel-state or high-viscosity solution;
• and/or the spinning solution has a viscosity of 80-4000cp and a concentration of 0.1-30 wt %.