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Method for preparing nano CaCu3Ti4O12 ceramic material with giant dielectric constant
The invention relates to a method for preparing a nano CaCu3Ti4O12 ceramic material with a giant dielectric constant. The method comprises the steps of dissolving Cu(NO3)2.3H2O and Ca(NO3)2.4H2O in absolute ethyl alcohol to prepare a solution A; dissolving butyl titanate into absolute ethyl alcohol to prepare a solution B; mixing glycol, citric acid, lithium carbonate and an oxalic acid aqueous solution to prepare a solution C; dripping the solution B in the solution A and stirring, and controlling the reaction temperature to be 80 to 95 DEG C and the pH (Potential Of Hydrogen) value to be 5.0 to 6.0; then dripping the solution C into the obtained mixed solution of the solution A and the solution B, and controlling the pH value to be 3.0 to 4.0 and the temperature to be 75 to 85 DEG C; obtaining nano CaCu3Ti4O12 by carrying out aftertreatment and calcination on an obtained product, wherein the calcination temperature is 700 to 850 DEG C. According to the method for preparing the nano CaCu3Ti4O12 ceramic material, disclosed by the invention, the nano CaCu3Ti4O12 which is uniform in particle size distribution, high in chemical activity and easy to modify and dope and has a very high dielectric constant and very low dielectric loss is prepared, the reaction period is greatly shortened, the firing temperature is low, and the energy consumption is low.
Method for preparing nano CaCu3Ti4O12 ceramic material with giant dielectric constant
The invention relates to a method for preparing a nano CaCu3Ti4O12 ceramic material with a giant dielectric constant. The method comprises the steps of dissolving Cu(NO3)2.3H2O and Ca(NO3)2.4H2O in absolute ethyl alcohol to prepare a solution A; dissolving butyl titanate into absolute ethyl alcohol to prepare a solution B; mixing glycol, citric acid, lithium carbonate and an oxalic acid aqueous solution to prepare a solution C; dripping the solution B in the solution A and stirring, and controlling the reaction temperature to be 80 to 95 DEG C and the pH (Potential Of Hydrogen) value to be 5.0 to 6.0; then dripping the solution C into the obtained mixed solution of the solution A and the solution B, and controlling the pH value to be 3.0 to 4.0 and the temperature to be 75 to 85 DEG C; obtaining nano CaCu3Ti4O12 by carrying out aftertreatment and calcination on an obtained product, wherein the calcination temperature is 700 to 850 DEG C. According to the method for preparing the nano CaCu3Ti4O12 ceramic material, disclosed by the invention, the nano CaCu3Ti4O12 which is uniform in particle size distribution, high in chemical activity and easy to modify and dope and has a very high dielectric constant and very low dielectric loss is prepared, the reaction period is greatly shortened, the firing temperature is low, and the energy consumption is low.
Method for preparing nano CaCu3Ti4O12 ceramic material with giant dielectric constant
ZHANG JIASONG (author)
2016-02-17
Patent
Electronic Resource
English
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