Preparation method of calcium sulfate whisker
A calcium sulfate whisker, calcium oxide technology, applied in chemical instruments and methods, calcium/strontium/barium sulfate, single crystal growth, etc., can solve the problems of yield not reaching 100%, very high temperature, pressure, etc. To achieve the effect of being conducive to environmental protection, uniform length and diameter, and easy to handle
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Embodiment 1
[0020] Weigh 100g of industrial grade CaO into the reactor, add 500ml of distilled water, pretreat in ultrasonic to make large particles fully pulverized, then add 500ml of distilled water, and digest at 40-60°C. To obtain the lime emulsion, raise the temperature to 80°C, add sulfuric acid solution equimolar to calcium oxide, add self-made crystallization directing agent in the reaction process, the addition amount is 1% of the theoretical product production amount, stir for 40min, make it fully react, The reaction solution was separated by suction filtration as soon as possible while hot, and the X-ray diffraction spectrum and the electron microscope figure of the obtained product were as follows: figure 1 , figure 2 shown.
[0021] The obtained calcium sulfate whisker products need different surface modifications according to different application objects to make them blend well with other materials. Easy to play its performance.
Embodiment 2
[0023] Except that the reaction temperature is 40° C., and 2% of a self-made crystallization directing agent is added, the other conditions are the same as in Example 1.
Embodiment 3
[0025] Except that the reaction temperature is 60°C, and 3% crystallization directing agent is added, the other conditions are the same as in Example 1.
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