Preserving gel texture during the drying step, which is one of the main problems of Sol gel process, can make drying gels have a lot of special properties and applications.
在干燥阶段维持凝胶织构可使得干燥凝胶具有一些特殊的性质和用途，也是溶胶-凝胶工艺中的关键问题之一。
2
Chemical gels have good stability and mechanical strength, but it is difficult for them to perform a sol-gel transition.
化学凝胶具有较好的稳定性和强度，但难以实现凝胶-溶胶的可逆转变。
3
Li2O-B2O3 composite gels were successfully prepared from tri-n-butyl borate and lithium methoxide dissolved in methanol and tetrahydrofuran via sol-gel technique.