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Preparation method of fiber felt enhanced silica aerogel composite panel
The invention discloses a preparation method of a fiber felt enhanced silica aerogel composite panel. The method comprises the following steps: with industrial-grade water glass as a silicon source, carrying out alkylation on a silica gel surface with a silane modifier, and drying at ordinary pressure, so as to prepare silicon dioxide aerogel particles; mixing and doping the prepared silica aerogel powder with hot melt adhesive powder in a fiber felt at the ratio, and carrying out thermo-compression formation, so as to prepare the silica aerogel composite panel, wherein the mass content of aerogel is 39%-61%; the density of the composite panel is 98-260kg/m<2>; the compressive strength can be up to 2.9-3.7MPa; the breaking strength is 1.9-3.3MPa; the heat conductivity coefficient is less than 0.023-0.035W/(m.K); and the hydrophobic angle reaches 129-153 DEG. The preparation method is low in silicon source cost, simple in synthetic process, and low in equipment demands; the prepared silica aerogel composite panel does not come off; and the fiber felt enhanced silica aerogel composite panel has self-supporting ability, and can be applied to the fields of heat preservation, heat insulation, fire protection, sound isolation, oil absorption and the like.
Preparation method of fiber felt enhanced silica aerogel composite panel
The invention discloses a preparation method of a fiber felt enhanced silica aerogel composite panel. The method comprises the following steps: with industrial-grade water glass as a silicon source, carrying out alkylation on a silica gel surface with a silane modifier, and drying at ordinary pressure, so as to prepare silicon dioxide aerogel particles; mixing and doping the prepared silica aerogel powder with hot melt adhesive powder in a fiber felt at the ratio, and carrying out thermo-compression formation, so as to prepare the silica aerogel composite panel, wherein the mass content of aerogel is 39%-61%; the density of the composite panel is 98-260kg/m<2>; the compressive strength can be up to 2.9-3.7MPa; the breaking strength is 1.9-3.3MPa; the heat conductivity coefficient is less than 0.023-0.035W/(m.K); and the hydrophobic angle reaches 129-153 DEG. The preparation method is low in silicon source cost, simple in synthetic process, and low in equipment demands; the prepared silica aerogel composite panel does not come off; and the fiber felt enhanced silica aerogel composite panel has self-supporting ability, and can be applied to the fields of heat preservation, heat insulation, fire protection, sound isolation, oil absorption and the like.
Preparation method of fiber felt enhanced silica aerogel composite panel
XU XINHUA (author) / ZHU JIN (author) / JIANG ANNI (author) / FAN XIN (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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