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Spray granulation method and preparation method of microwave dielectric powder for filter
The invention discloses a spray granulation method and a preparation method of microwave dielectric powder for a filter, and belongs to the technical field of ceramic materials. The spray granulationmethod comprises the following steps: fully dispersing and grinding a microwave dielectric material to obtain raw material slurry; adding the raw material slurry into a glue solution, and uniformly mixing, wherein the glue solution comprises PEG glue, PVA glue, a surfactant, a demolding agent and a defoaming agent; and carrying out spray granulation on the uniformly mixed solution by using a spraydryer. According to the invention, the PEG glue is utilized to effectively improve the plasticity of the green body, reduce the pressing pressure of the green body, eliminate the cracking of the green body, and reduce the problems of easy cracking, easy damage, easy breakage of corners, rough surface and the like of the green body in the CNC machining process; and by utilizing the surfactant, theviscosity of the slurry can be effectively improved under the condition of high solid content, the strength of a green body is improved, the problem of mold sticking caused by PEG glue during subsequent dry pressing molding can be effectively solved, and the molding performance of spray granulation powder is improved.
本发明公开了一种滤波器用微波介质粉体的喷雾造粒方法及制备方法，属于陶瓷材料技术领域。该喷雾造粒方法包括：对微波介质材料进行充分分散研磨，得到原料浆料；将所述原料浆料加入胶溶液混匀，所述胶溶液包括PEG胶、PVA胶、表面活性剂、脱模剂和消泡剂；采用喷雾干燥机对混匀后的溶液进行喷雾造粒。本发明利用PEG胶可有效提高坯体塑性、降低坯体压制压力、消除坯体开裂、减少生坯在CNC加工过程中出现的易开裂、易损坏、边角易崩缺、表面粗糙等问题；利用表面活性剂，可在高固含量的情况下有效改善浆料粘度，提高坯体强度，并可有效改善PEG胶引起的后续干压成型时带来的粘模问题，提高了喷雾造粒粉体的成型性能。
Spray granulation method and preparation method of microwave dielectric powder for filter
The invention discloses a spray granulation method and a preparation method of microwave dielectric powder for a filter, and belongs to the technical field of ceramic materials. The spray granulationmethod comprises the following steps: fully dispersing and grinding a microwave dielectric material to obtain raw material slurry; adding the raw material slurry into a glue solution, and uniformly mixing, wherein the glue solution comprises PEG glue, PVA glue, a surfactant, a demolding agent and a defoaming agent; and carrying out spray granulation on the uniformly mixed solution by using a spraydryer. According to the invention, the PEG glue is utilized to effectively improve the plasticity of the green body, reduce the pressing pressure of the green body, eliminate the cracking of the green body, and reduce the problems of easy cracking, easy damage, easy breakage of corners, rough surface and the like of the green body in the CNC machining process; and by utilizing the surfactant, theviscosity of the slurry can be effectively improved under the condition of high solid content, the strength of a green body is improved, the problem of mold sticking caused by PEG glue during subsequent dry pressing molding can be effectively solved, and the molding performance of spray granulation powder is improved.
本发明公开了一种滤波器用微波介质粉体的喷雾造粒方法及制备方法，属于陶瓷材料技术领域。该喷雾造粒方法包括：对微波介质材料进行充分分散研磨，得到原料浆料；将所述原料浆料加入胶溶液混匀，所述胶溶液包括PEG胶、PVA胶、表面活性剂、脱模剂和消泡剂；采用喷雾干燥机对混匀后的溶液进行喷雾造粒。本发明利用PEG胶可有效提高坯体塑性、降低坯体压制压力、消除坯体开裂、减少生坯在CNC加工过程中出现的易开裂、易损坏、边角易崩缺、表面粗糙等问题；利用表面活性剂，可在高固含量的情况下有效改善浆料粘度，提高坯体强度，并可有效改善PEG胶引起的后续干压成型时带来的粘模问题，提高了喷雾造粒粉体的成型性能。
Spray granulation method and preparation method of microwave dielectric powder for filter
滤波器用微波介质粉体的喷雾造粒方法及制备方法
TANG XIAONENG (author) / JIANG TAO (author) / WANG FEI (author) / TAN ZHENG (author) / DU YUEDE (author)
2020-11-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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