气 凝 胶
气凝胶是一种固体物质形态,是世界上密度最小的固体之一。一般常见的气凝胶为硅气凝胶,也有碳气凝胶存在。目前最轻的硅气凝胶仅有3毫克每立方厘米,比空气重三倍,所以也被叫做“冻结的烟”或“蓝烟”。
气凝胶的特性方波信号发生器
* 孔隙率很高,可高达99.8% ;
* 纳米级别孔洞(20~100nm)和三维纳米骨架颗粒(2~5nm);
* 高比表面积,可高达1000m2/g;
* 低密度,可低至0.003g/cm3;
* 气凝胶独特的结构决定了其具有极低的热导率,常温下可以低至0.013W/(m·K);
* 强度低,脆性大,由于其比表面积和孔隙率很大,密度很低,导致其强度很低
我公司的气凝胶性能
物理项 | 性能参数 |
密度 | 12.5-18kg/m3 |
比表面积 | 500-650m2/g |
孔隙率 | 95-98% |
孔径 | 20-70nm |
孔容 | 3.5ml/g |
导热系数热电堆 | 0.01-0.018w/m·k |
疏水性 | 疏水或亲水两类 |
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主要应用领域
* 填充型超级保温绝热材料* 催化剂以及催化载体方面的应用 * 化妆品及牙膏添加剂、油墨添加剂、体育用品增强剂等 * 超级电容及其它电化学方面
* 储氢材料
* 气体或者液体吸附
Silica Aerogel
Definition of Aerogel
Aerogel is one of the lowest density solids. Silica aerogel is commonly seen, but there is also the existence of carbon aerogel. Currently, the lightest silica aerogel is about 3 mg/cm3, only three times heavier than air. So it is also called “frozen smoke” or “blue smoke”.
铁硅铝Properties of Aerogel
自制酸奶发酵剂
* Porosity as high as 99. 8%
* Nano-sized pores(20-100nm)
Three-dimensional nano-structure(2-5nm)
* Surface area as high as 1000m2/g
* Density as low as 0.003g/cm3
* Thermal conductivity as low as 0.013W/m·K
* Low intensity and high friability due to its high surface aera, high porosity and low density.
General Performance of Our Aerogel
Physics Items | Performance |
Density | 12.5-18kg/ m3 |
Surface Area | 500-650m2/g |
Porosity | 95-98% |
Pore Diameter | 20-70nm |
ar台Pore Volume | 3.5ml/g |
Thermal Conductivity | 0.01-0.018w/m·k |
Hydrophobicity | Hydrophobic or hydrophilic |
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氧气袋
Application
* Filled-tupe Super thermal insulation material
* Catalyst and catalyst carrier
* Cosmetics and toothpaste additives, ink additives, and other sporting goods reinforcing agent ,etc
* Super capacitors and other electrochemical units
* Hydrogen storage materials
* Gas or liquid adsorption