Preparation and characterization of inhomogeneous RF aerogels with continuously varying densities

AbstractInhomogeneous resorcinol-formaldehyde (RF) aerogels with continuously varying densities were prepared by a facile yet effective method. The preparation involved sol–gel technique and supercritical drying. The low-density sol was pumped into the hi

摘要 通过一种简便而有效的方法制备了密度连续变化的非均相间苯二酚 - 甲醛（RF）气凝胶。制备过程涉及溶胶 - 凝胶技术和超临界干燥。将低密度溶胶泵入……