Aerogel is nicknamed "frozen smoke" and is made by extracting water from a silica gel, then replacing it with gas such as carbon dioxide.
气凝胶的一个绰号是“固态烟”，通过从硅胶中抽去水分代之以气体(比如用二氧化碳)制成。
2
The PAN-based carbon fiber precursor was prepared with gel spinning method.
利用凝胶纺丝方法制备了聚丙烯腈基碳纤维原丝。
3
Nanocrystalline SiC powder was synthesized by carbothermal reduction of the precursor of carbon black and silica gel prepared by precipitation-spray drying slurry of carbon black and water glass.