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The invention discloses a method for preparing Li3MgNbO6 microwave dielectric ceramic based on Isobam gel casting technology, the method comprises the following steps: mixing and ball-milling ceramic powder, a sintering aid, a dispersant A, grinding balls and absolute ethyl alcohol, drying and sieving mixed slurry, calcining to obtain raw material powder, mixing and ball-milling deionized water, an Isobam 600 solution, a dispersant B, a plasticizer, grinding balls and the raw material powder, pouring the prepared ceramic slurry into a trough flow of a casting machine, enabling relative movement to perform between a carrying belt and a scraper through rotation of a rotating shaft, uniformly coating the slurry on the carrying belt under the conditions that the carrying belt is very flat and moves linearly at a constant speed, and sequentially performing drying treatment and glue discharging treatment after curing so that a Li3MgNbO6 casting green sheet is obtained. According to the casting machine, the problem that in an Isobam gel system, casting is difficult due to the fact that the thickness is extremely small due to tension of water is solved, the thickness of the ceramic body is accurately controlled according to the height between the casting scraper and the carrying belt of the casting machine, the flatness is controlled, and the thickness is guaranteed.
本发明公开了一种基于Isobam凝胶流延技术制备Li3MgNbO6微波介质陶瓷的方法，先将陶瓷粉体、烧结助剂、分散剂A、磨球、无水乙醇混合球磨，混合浆料烘干、过筛，经煅烧得到原料粉，然后将去离子水、Isobam600溶液、分散剂B、增塑剂、磨球和原料粉混合球磨，制成的陶瓷浆料倒入流延机的料槽流中，通过转动轴的转动使得载送带与刮刀之间产生相对运动，在载送带十分平整，并且以匀速直线运动的条件下，浆料均匀的涂覆在载送带上，固化后依次进行干燥处理和排胶处理，从而得到Li3MgNbO6流延生片。本发明克服了Isobam凝胶体系中由于水的张力带来极薄厚度难于浇注的问题，并用流延机的流延刮刀与载送带之间的高度来精确控制陶瓷坯体的厚度，既控制了平整度又保证了厚度。
The invention discloses a method for preparing Li3MgNbO6 microwave dielectric ceramic based on Isobam gel casting technology, the method comprises the following steps: mixing and ball-milling ceramic powder, a sintering aid, a dispersant A, grinding balls and absolute ethyl alcohol, drying and sieving mixed slurry, calcining to obtain raw material powder, mixing and ball-milling deionized water, an Isobam 600 solution, a dispersant B, a plasticizer, grinding balls and the raw material powder, pouring the prepared ceramic slurry into a trough flow of a casting machine, enabling relative movement to perform between a carrying belt and a scraper through rotation of a rotating shaft, uniformly coating the slurry on the carrying belt under the conditions that the carrying belt is very flat and moves linearly at a constant speed, and sequentially performing drying treatment and glue discharging treatment after curing so that a Li3MgNbO6 casting green sheet is obtained. According to the casting machine, the problem that in an Isobam gel system, casting is difficult due to the fact that the thickness is extremely small due to tension of water is solved, the thickness of the ceramic body is accurately controlled according to the height between the casting scraper and the carrying belt of the casting machine, the flatness is controlled, and the thickness is guaranteed.
本发明公开了一种基于Isobam凝胶流延技术制备Li3MgNbO6微波介质陶瓷的方法，先将陶瓷粉体、烧结助剂、分散剂A、磨球、无水乙醇混合球磨，混合浆料烘干、过筛，经煅烧得到原料粉，然后将去离子水、Isobam600溶液、分散剂B、增塑剂、磨球和原料粉混合球磨，制成的陶瓷浆料倒入流延机的料槽流中，通过转动轴的转动使得载送带与刮刀之间产生相对运动，在载送带十分平整，并且以匀速直线运动的条件下，浆料均匀的涂覆在载送带上，固化后依次进行干燥处理和排胶处理，从而得到Li3MgNbO6流延生片。本发明克服了Isobam凝胶体系中由于水的张力带来极薄厚度难于浇注的问题，并用流延机的流延刮刀与载送带之间的高度来精确控制陶瓷坯体的厚度，既控制了平整度又保证了厚度。
Method for preparing Li3MgNbO6 microwave dielectric ceramic based on Isobam gel casting technology
一种基于Isobam凝胶流延技术制备Li3MgNbO6微波介质陶瓷的方法
2021-10-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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