硅酸铝纤维和玻璃纤维复合二氧化硅气凝胶材料的制备与性能

doi:10.11962/1006-4990.2019-0608

Abstract

Abstract:

The fiber composite silica aerogel materials were prepared using alumina silicate fiber or glass fiber as framework via sol-gel process and ambient pressure drying technology.The structure and properties of the produced materials were tested and analyzed.The results showed that silica aerogels were attached to the fiber surfaces which improve the mechanical properties of the materials.The sound insulation performance of alumina silicate fiber composite silica aerogel material was better than that of glass fiber composite silica aerogel material.The two kinds of fiber composite silica aerogel materials met the requirement of Level A on high thermal resistance and combustibility.The alumina silicate fiber composite silica aerogel material and glass fiber composite silica aerogel material met the requirement of Level AQ₁ and Level AQ₂ on smoke toxicity,respectively.And their thermal conductivities were 0.034 W/(m·K) and 0.033 W/(m·K),respectively.

Key words: silica aerogel, fiber, composite, fireproofing, heat insulation

CLC Number:

TQ127.2

Zhang Yi,Ge Xinguo,Lu Guojian,Zhao Changzheng. Preparation and properties of aluminum silicate fiber and glass fiber composite silica aerogel materials[J]. Inorganic Chemicals Industry, 2020, 52(10): 68-71.

Figures/Tables 9

References 14

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样品	密度/（g·cm^-3）	孔隙率/%	比表面积/（m²·g^-1）	平均孔径/nm
ASFF	0.18	—	—	—
ASF-AC	0.24	81.1	162	30.3
GFF	0.12	—	—	—
GF-AC	0.18	84.8	159	36.4

样品	压缩强度（30%应变）/ kPa	压缩强度（60%应变）/kPa	样品	压缩强度（30%应变）/ kPa	压缩强度（60%应变）/kPa
ASFF	0.14	4.35	GFF	0.01	0.29
ASF-AC	31.39	230.45	GF-AC	5.87	25.13

样品	不燃性			总热值/ （MJ·kg^-1）	燃烧性能等级	产烟毒性危险等级
样品	炉内温升/℃	持续燃烧时间/s	质量损失率/%	总热值/ （MJ·kg^-1）	燃烧性能等级	产烟毒性危险等级
ASF-AC	1.0	0	1.30	0.0	A（A1）	AQ₁级
GF-AC	0.8	0	5.86	0.1	A（A1）	AQ₂级

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Inorganic Acid-Base-Salt Committee of CIESC

Preparation and properties of aluminum silicate fiber and glass fiber composite silica aerogel materials

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