Fabrication of Nano-Calcium Carbonate Precipitate by Ultrasonic Milling Technique using Ethylene Glycol Media

摘要

Calcium Carbonate Precipitate is one of the filler ingredients which have the advantage of being neutral to all materials,light and harmless.Along with the widespread use of composite materials,it is necessary to develop smaller size nano calcium carbonate materials having nano-size properties that are superior to ordinary calcium carbonate precipitates.The purpose of this study is to obtain nano-carbonate precipitate materials with the particle size below 100 run.In this study,the method used is starting from the preparation of calcium carbonate precipitate through a carbonation process,and then an ultrasonic milling process with ethylene glycol media is carried out.The process step is calcination,then the slaking process with water and then the carbonation process using carbon dioxide gas.Variables in the process of making calcium carbonate precipitates were not carried out,whereas in the ultrasonic milling process the variables in the process were ultrasonic time and the use of amplitude.The results of the experiment are then analysed by testing the sediment rate to obtain optimal grain size results,then the PSA Nano analysis in wet conditions and SEM analysis after the product is dried.The experimental results showed that the optimum yield of calcium carbonate precipitate granules with a size of 64 nm at 20 minutes of the ultrasonic time and the use of waves with an amplitude of 30%.