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Preparation method of ceramic granulation powder for plasma spraying
The preparation method of the ceramic granulation powder for plasma spraying, provided by the invention, comprises the following steps: uniformly dispersing ceramic micro powder, a dispersing agent, acrylamide, a cross-linking agent, a catalyst, an initiator and a defoaming agent into deionized water to prepare stable ceramic slurry; sequentially adding an emulsifier and the ceramic slurry into the oil phase, and stirring at a certain rotating speed to prepare an emulsion containing ceramic slurry microspheres; the mass ratio of the emulsifier to the ceramic slurry is 1: (40-500); the volume ratio of the oil phase to the ceramic slurry is 1: (0.1-5); putting the obtained emulsion into a microwave drying oven, and carrying out heat preservation for a period of time so as to promote acrylamide in the ceramic slurry microspheres to be crosslinked and cured; the cured ceramic wet balls can be separated from the oil phase in a filtering manner; and drying the wet balls to obtain the required spherical ceramic granulation powder. The prepared powder is high in sphericity degree, good in purity and better in fluidity. The preparation method is suitable for industrial large-scale production and has great prospects in the fields of thermal spraying and the like.
本发明提出的一种等离子喷涂用陶瓷造粒粉的制备方法为：将陶瓷微粉、分散剂、丙烯酰胺、交联剂、催化剂、引发剂、消泡剂均分的分散到去离子水中，制备出稳定的陶瓷浆料；然后先后将乳化剂和陶瓷浆料加入油相中，以一定转速搅拌制备出含陶瓷浆料微球的乳状液；乳化剂与陶瓷浆料的质量比为1:40~500；油相和陶瓷浆料的体积比为1:0.1~5；将所得到的乳状液放入微波干燥箱中保温一段时间以促进陶瓷浆料微球中的丙烯酰胺交联固化；用过滤的方式就可将固化后的陶瓷湿球和油相分离；湿球烘干后即可得到所需的球形陶瓷造粒粉。本发明所制备的粉体球形度高、纯度好、流动性较佳。本制备适用于工业化大规模生产，在热喷涂等领域极具前景。
Preparation method of ceramic granulation powder for plasma spraying
The preparation method of the ceramic granulation powder for plasma spraying, provided by the invention, comprises the following steps: uniformly dispersing ceramic micro powder, a dispersing agent, acrylamide, a cross-linking agent, a catalyst, an initiator and a defoaming agent into deionized water to prepare stable ceramic slurry; sequentially adding an emulsifier and the ceramic slurry into the oil phase, and stirring at a certain rotating speed to prepare an emulsion containing ceramic slurry microspheres; the mass ratio of the emulsifier to the ceramic slurry is 1: (40-500); the volume ratio of the oil phase to the ceramic slurry is 1: (0.1-5); putting the obtained emulsion into a microwave drying oven, and carrying out heat preservation for a period of time so as to promote acrylamide in the ceramic slurry microspheres to be crosslinked and cured; the cured ceramic wet balls can be separated from the oil phase in a filtering manner; and drying the wet balls to obtain the required spherical ceramic granulation powder. The prepared powder is high in sphericity degree, good in purity and better in fluidity. The preparation method is suitable for industrial large-scale production and has great prospects in the fields of thermal spraying and the like.
本发明提出的一种等离子喷涂用陶瓷造粒粉的制备方法为：将陶瓷微粉、分散剂、丙烯酰胺、交联剂、催化剂、引发剂、消泡剂均分的分散到去离子水中，制备出稳定的陶瓷浆料；然后先后将乳化剂和陶瓷浆料加入油相中，以一定转速搅拌制备出含陶瓷浆料微球的乳状液；乳化剂与陶瓷浆料的质量比为1:40~500；油相和陶瓷浆料的体积比为1:0.1~5；将所得到的乳状液放入微波干燥箱中保温一段时间以促进陶瓷浆料微球中的丙烯酰胺交联固化；用过滤的方式就可将固化后的陶瓷湿球和油相分离；湿球烘干后即可得到所需的球形陶瓷造粒粉。本发明所制备的粉体球形度高、纯度好、流动性较佳。本制备适用于工业化大规模生产，在热喷涂等领域极具前景。
Preparation method of ceramic granulation powder for plasma spraying
一种等离子喷涂用陶瓷造粒粉的制备方法
WANG GANG (author) / LI HONGXIA (author) / DONG BINBIN (author) / LIANG PENGPENG (author) / ZHAO SHIXIAN (author) / FENG JING (author) / LI LINGFENG (author) / LI HONGYU (author)
2022-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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