发明名称 |
High strength air-dried aerogels |
摘要 |
A method for the preparation of high strength air-dried organic aerogels. The method involves the sol-gel polymerization of organic gel precursors, such as resorcinol with formaldehyde (RF) in aqueous solvents with R/C ratios greater than about 1000 and R/F ratios less than about 1:2.1. Using a procedure analogous to the preparation of resorcinol-formaldehyde (RF) aerogels, this approach generates wet gels that can be air dried at ambient temperatures and pressures. The method significantly reduces the time and/or energy required to produce a dried aerogel compared to conventional methods using either supercritical solvent extraction. The air dried gel exhibits typically less than 5% shrinkage. |
申请公布号 |
US8304465(B2) |
申请公布日期 |
2012.11.06 |
申请号 |
US20060335297 |
申请日期 |
2006.01.18 |
申请人 |
CORONADO PAUL R.;SATCHER, JR. JOE H.;LAWRENCE LIVERMORE NATIONAL SECURITY, LLC |
发明人 |
CORONADO PAUL R.;SATCHER, JR. JOE H. |
分类号 |
C08J9/28 |
主分类号 |
C08J9/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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