AEROGEL PARTICLE AND METHOD OF PRODUCING THE SAME
An aerogel particle is produced by following processes. A mixing process: an alkoxysilane compound is mixed with an organic solvent to form a first mixed solution. A hydrolysis process: an acid catalyst is added into the first mixed solution to perform a hydrolysis reaction, thereby obtaining a sol. A condensation process: an alkali catalyst is added into the sol to perform a condensation reaction, and a hydrophobic dispersion solvent is added and stirred during the condensation process, thereby subjecting sol to be gelled when it is stirred, further producing the aerogel particle with a uniform structure.
1 . A method of producing an aerogel particle, comprising:
performing a mixing process, wherein an alkoxysilane compound is mixed with an organic solvent to form a first mixed solution;
performing a hydrolysis process to the first mixed solution, wherein an acid catalyst is added into the first mixed solution to perform a hydrolysis reaction, thereby forming a sol; and
performing a condensation process to the sol, wherein an alkali catalyst is added into the sol to perform a condensation reaction, and a hydrophobic dispersion solvent is added and stirred during the condensation process, thereby subjecting the sol to be gelled when it is stirred, further producing a second mixed solution including the aerogel particle.
2 . The method of producing an aerogel particle of claim 1 , wherein the hydrophobic solvent is selected from a group consisting of ketone, ether, ester, aromatic and alkane.
3 . The method of producing the aerogel particle of claim 2 , after the condensation process is performed, the method further comprises:
performing a post-treatment process to the second mixed solution, wherein the aerogel particle is filtered out by a filter and washed by a mixed solution including ethanol and water, and then the aerogel particle is dried at 100° C. to 115° C. in vacuum.
4 . The method of producing the aerogel particle of claim 2 , after the condensation process is performed, the method further comprises:
performing a hydrophobic modified process to the second mixed solution, wherein the second mixed solution is heated to evaporate the organic solvent, and a chloryl organic molecule is added to subject the chloryl organic molecule to react with a hydroxyl group of the aerogel particle, thereby subjecting the aerogel particle to be hydrophobic, further preventing the aerogel particle from being broken by the hydrophobic solvent.
5 . The method of producing the aerogel particle of claim 4 , wherein the chloryl organic molecule is selected from a group consisting of chloryl alkoxysilane, chloryl alkane and chloryl phene.
6 . The method of producing the aerogel particle of claim 4 , the organic solvent includes a mixture of ethanol and water; a temperature of the second mixed solution is sequentially varied to a first temperature, a second temperature and a third temperature, wherein the first temperature is 78° C. to 82° C., the second temperature is 100° C. to 115° C., the third temperature is 40° C. to 45° C., and when the temperature of the second mixed solution is varied to the third temperature, the chloryl organic molecule is added.
7 . The method of producing the aerogel particle of claim 4 , after the hydrophobic modified process is performed, the method further comprises:
performing a post-treatment process, wherein the aerogel particle is filtered out by a filter and washed by toluene, and then the aerogel particle is dried in vacuum.
8 . The method of producing the aerogel particle of claim 1 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
9 . The method of producing the aerogel particle of claim 2 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
10 . The method of producing the aerogel particle of claim 3 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
11 . The method of producing the aerogel particle of claim 4 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
12 . The method of producing the aerogel particle of claim 5 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
13 . The method of producing the aerogel particle of claim 6 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
14 . The method of producing the aerogel particle of claim 7 , wherein the sol is stirred at 1200 rpm to 2000 rpm when the condensation process is performed.
15 . An aerogel particle, produced by following processes:
performing a mixing process, wherein an alkoxysilane compound is mixed with an organic solvent to form a first mixed solution;
performing a hydrolysis process to the first mixed solution, wherein an acid catalyst is added into the first mixed solution to perform a hydrolysis reaction, thereby forming a sol; and
performing a condensation process to the sol, wherein an alkali catalyst is added into the sol, a hydrophobic dispersion solvent is added and stirred during the condensation process, thereby subjecting the sol to be gelled when it is stirred, further producing a second mixed solution including the aerogel particle, and a particle size of the aerogel particle is 300 nm to 900 nm.
16 . The aerogel particles of claim 15 , wherein the hydrophobic solvent is selected from a group consisting of ketone, ether, ester, aromatic and alkane.