Aerogel precursor and aerogel produced using same
AssigneeLG Chem, Ltd.
InventorsHee Jung Choi, Se Hyun Kwon, Yeong Rae Chang, Seok Hoon Jang
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Abstract
Provided is a hydrophobic silica aerogel precursor, and a hydrophobic silica aerogel produced using the same. In the methods, a linear silane crosslinking agent containing a PEG-derived unit is introduced when preparing a hydrophobic aerogel precursor, resulting in the production of a hydrophobic silica aerogel having improved high-temperature thermal stability and improved physical properties.
Claims19
A method for preparing a hydrophobic aerogel precursor, the method comprising:
- preparing an alkoxysilane compound or pre-hydrolyzed alkoxysilane compound;
- and
- adding a linear silane crosslinking agent to polymerize the alkoxysilane compound or pre-hydrolyzed alkoxysilane compound, wherein
- the linear silane crosslinking agent comprises a polyethylene glycol (PEG)-derived unit,
- wherein a weight average molecular weight (MW) of the hydrophobic aerogel precursor is 500-6,500 g/mol.
A method for preparing a hydrophobic aerogel precursor, the method comprising:
- preparing an alkoxysilane compound or pre-hydrolyzed alkoxysilane compound;
- and
- adding a linear silane crosslinking agent to polymerize the alkoxysilane compound or pre-hydrolyzed alkoxysilane compound,
- wherein the linear silane crosslinking agent comprises a polyethylene glycol (PEG)-derived unit, and
- wherein a degree of hydration of the pre-hydrolyzed alkoxysilane compound is 50-80%.
A hydrophobic aerogel precursor, comprising:
- an alkoxysilane compound-derived unit;
- and
- a PEG-derived unit,
- wherein a weight average molecular weight (MW) of the hydrophobic aerogel precursor is 500-6,500 g/mol.
Dependencies are inferred from the claim text.