Icf Target With Aerogels Of Phenol And Hydrogen, Deuterium Adsorption Applied Research

Carbonized aerogels have some excellent properties such as their special porous structure, larger specific surface area, nanoscale pore, nanoscale framework and non-crystalline structure, which are favourable to enhance the surface adsorption potential. The polymerization of resorcinol with formaldehyde catalyzed by alkali catalyst results in the formation of organic aerogel via a sol-gel process, acid aging process, and supercritical fluid drying. Upon pyrolysis of organic aerogel at high temperature, the carbonized aerogel can be obtained. The carbonized aerogel is widely used in the field of mechanics, acoustics, electricity, calorifics and optics, and it is noticeable in the application research of the inertial confinement fusion (ICF) and hydrogen storage used in the civil cases.This dissertation has firstly developed a new technology process to modify carbonized aerogels in the preparation of resorcinol-type organic aerogel and corresponding carbonized aerogel, which attains to the destination of shortening the preparation time of aerogels, increasing the quality of aerogels, and reducing the cost of aerogel's preparation.In the sol-gel process of preparing the organic aerogel, the gelation speed is increased by means of ultrasonic heating at constant temperature, which is efficient to inhibit the oxidation of resorcinol-type substance in the gel process. The transparency of the prepared organic aerogel is excellent, and the aerogel's quality is improved.In the course of solvent's exchange, two kinds of methods have been adopted to expedite the solvent's exchange speed. Firstly, low-intensity ultrasonic is used to elevate the exchange speed of acetone replacing water from the aerogel containing water up to ten thousand times. Meanwhile, the aerogel structure can be kept through controlling the exchange time. Secondly, the solvent exchange is circularly employed. It is easy to raise the exchange rate for the high-density aerogel, while it has some effect on the low-density aerogel due to the pressure.Several kinds of organic aerogels and corresponding carbonized aerogels are prepared according to the modified technology process. The resorcinol-formaldehyde (RF) aerogel is prepared through the polymerization of resorcinol (R) with formaldehyde (F), and water is used as the solvent. The prepared organic aerogel is transparent, the structure of carbonized aerogel is uniform, and its density is controlled by the reactant concentration and catalyst concentration. When the mixture of alcohol and water is used as the solvent, the transparency of the PF and corresponding CPF aerogels from the polymerization of phloroglucinol and formaldehyde is better than that of RF aerogel, and their densities are lower (< 20 mg/cm~3).