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Preparation method of large-area defect-free nano-scale thickness compact ceramic film and prepared ceramic film
The invention discloses a preparation method of a large-area defect-free nano-scale thickness compact ceramic film. Metal alkoxide, a surfactant and a reaction inhibitor are dissolved in an oily solvent easy to spread on the water surface to form an oily solution, the oily solution is dripped on the static water surface to be spread to form a liquid film with uniform thickness, and the metal alkoxide in the liquid film chemically reacts with water to be converted into sol, the sol is further gelated to form a film layer with certain thickness and strength, and the film layer is dried and calcined to obtain the large-area defect-free nano-scale thickness compact ceramic film. In addition, the invention also discloses the ceramic film prepared by the preparation method. According to the preparation method, the problem of cracking caused by easy shrinkage due to the fact that sol is used as a precursor in the prior art is solved, the problems that the nano-scale thickness is difficult to control, air holes or crack defects are easy to form and the like by adopting a deposition method and the like are solved, and a new way is provided for preparation of the nano-scale thickness compact ceramic film.
本发明公开了一种大面积无缺陷纳米量级厚度致密陶瓷薄膜的制备方法，将金属醇盐、表面活性剂、反应抑制剂溶解于易于在水面铺展的油性溶剂而形成油性溶液，将该油性溶液滴于静止的水面上铺展开来而形成厚度均匀的液膜，液膜中的金属醇盐与水发生化学反应而转变为溶胶，进而经凝胶化形成具有一定厚度和强度的膜层，膜层经干燥和煅烧后，即得到大面积无缺陷纳米量级厚度的致密陶瓷薄膜。此外，还公开了利用上述制备方法制得的陶瓷薄膜。本发明解决了现有技术以溶胶为前驱体所带来的易产生收缩而导致开裂的难题，以及采用沉积等方法纳米厚度难以控制、易形成气孔或裂纹缺陷等问题，为纳米厚度致密陶瓷薄膜的制备提供了新的途径。
Preparation method of large-area defect-free nano-scale thickness compact ceramic film and prepared ceramic film
The invention discloses a preparation method of a large-area defect-free nano-scale thickness compact ceramic film. Metal alkoxide, a surfactant and a reaction inhibitor are dissolved in an oily solvent easy to spread on the water surface to form an oily solution, the oily solution is dripped on the static water surface to be spread to form a liquid film with uniform thickness, and the metal alkoxide in the liquid film chemically reacts with water to be converted into sol, the sol is further gelated to form a film layer with certain thickness and strength, and the film layer is dried and calcined to obtain the large-area defect-free nano-scale thickness compact ceramic film. In addition, the invention also discloses the ceramic film prepared by the preparation method. According to the preparation method, the problem of cracking caused by easy shrinkage due to the fact that sol is used as a precursor in the prior art is solved, the problems that the nano-scale thickness is difficult to control, air holes or crack defects are easy to form and the like by adopting a deposition method and the like are solved, and a new way is provided for preparation of the nano-scale thickness compact ceramic film.
本发明公开了一种大面积无缺陷纳米量级厚度致密陶瓷薄膜的制备方法，将金属醇盐、表面活性剂、反应抑制剂溶解于易于在水面铺展的油性溶剂而形成油性溶液，将该油性溶液滴于静止的水面上铺展开来而形成厚度均匀的液膜，液膜中的金属醇盐与水发生化学反应而转变为溶胶，进而经凝胶化形成具有一定厚度和强度的膜层，膜层经干燥和煅烧后，即得到大面积无缺陷纳米量级厚度的致密陶瓷薄膜。此外，还公开了利用上述制备方法制得的陶瓷薄膜。本发明解决了现有技术以溶胶为前驱体所带来的易产生收缩而导致开裂的难题，以及采用沉积等方法纳米厚度难以控制、易形成气孔或裂纹缺陷等问题，为纳米厚度致密陶瓷薄膜的制备提供了新的途径。
Preparation method of large-area defect-free nano-scale thickness compact ceramic film and prepared ceramic film
一种大面积无缺陷纳米量级厚度致密陶瓷薄膜的制备方法及其制得的陶瓷薄膜
WANG XIA (author) / CHANG QIBING (author) / LIU KUN (author) / TAN LING (author) / YANG KE (author) / WANG YONGQING (author)
2021-09-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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