Low density, resorcinol-formaldehyde aerogels

Patent Application · Tue Sep 12 00:00:00 EDT 1989

OSTI ID:5884042

Pekala, R W

The polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer clusters''. The covalent crosslinking of these clusters'' produces gels which when processed under supercritical conditions, produce low density, organic aerogels (density {le}100 mg/cc; cell size {le}0.1 microns). The aerogels are transparent, dark red in color and consist of interconnected colloidal-like particles with diameters of about 100 A{degrees}. These aerogels may be further carbonized to form low density carbon foams with cell size of about 0.1 micron. 1 ref., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7406009
• Application Number: ON: DE91011631; PPN: US 7-406009
• OSTI ID: 5884042
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
GELS
SYNTHESIS
DENSITY
FOAMS
FORMALDEHYDE
HIGH ENERGY PHYSICS
INVENTIONS
ORGANIC MATTER
POROSITY
RESORCINOL
ALDEHYDES
AROMATICS
COLLOIDS
DEVELOPERS
DISPERSIONS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
PHYSICS
POLYPHENOLS
360601* - Other Materials- Preparation & Manufacture
400201 - Chemical & Physicochemical Properties