Manufacturing method for crystal whisker of magnesium borate

The present invention is related to a manufacturing method for crystal whisker of magnesium borate, which includes: mixing magnesium chloride, boric acid, and sodium hydrogen carbonate at a quality ratio of 1~2:1~2.5:1~5 and initiating a reaction to obtain a precursor mixture. The abovementioned precursor mixture is extruded into a lamella of a honeycomb shape, and the precursor mixture of the lamella shape is subjected to high-temperature sintering to obtain the sintered body of the crystal whisker of magnesium borate, which is subjected to cleaning and drying to obtain the crystal whisker of magnesium borate. The manufacturing method utilized in this invention will not generate harmful gas, will not generate corrosion for the production equipment, and will not cause environmental pollution,; in addition, water is not added into the raw material to avoid the water treatment problem, thereby reducing the processes and lowering the cost, and less heat is generated in the reaction process to be convenient for o