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Method for preparing piezoelectric ceramic fiber composite material driver based on freeze casting method
The invention relates to a method for preparing a piezoelectric ceramic fiber composite material driver based on a freeze casting method, which comprises the following steps of: by utilizing a freeze casting technology, adding an additive, a dispersing agent, a binder and a sintering aid into ceramic powder serving as a raw material to prepare ceramic slurry, freezing, drying in vacuum and sintering to obtain lamellar ceramic; impregnating and filling a polymer in vacuum to obtain a ceramic/polymer piezoelectric fiber compound; and plating interdigital electrodes on the two surfaces of the material by using technologies such as magnetron sputtering, 3D printing and the like to obtain an interdigital piezoelectric fiber composite material device. The freeze casting technology is adopted, the limitation of traditional preparation of piezoelectric fiber composite materials is broken through, the layered structure is more compact, the interlayer spacing can reach the micron order, and the electromechanical coupling performance and the electromechanical conversion efficiency of electronic devices are improved; meanwhile, the MFC preparation process is simplified, and the flexibility and plasticity and the energy conversion efficiency are improved; the method is suitable for various piezoelectric ceramic materials, simple in technological process, high in controllability, low in cost, environmentally friendly and suitable for batch production of flexible drivers, sensors and shock absorbers of various sizes and types.
一种基于冷冻铸造法制备压电陶瓷纤维复合材料驱动器的方法，利用冷冻铸造技术，以陶瓷粉末为原料，加入添加剂、分散剂、粘结剂和助烧剂，配制成陶瓷浆料，经冷冻、真空干燥、烧结后得到片层状陶瓷；将其在真空下浸渍填充聚合物，获得陶瓷/聚合物压电纤维复合物；利用磁控溅射、3D打印等技术，将材料双面镀上叉指型电极，得到叉指型压电纤维复合材料器件。本发明采用冷冻铸造技术，打破传统制备压电纤维复合材料的局限性，层状结构更加致密，层间距能够达到微米级，提高电子器件的机电耦合性和机电转换效率；同时简化MFC制备工艺，提升柔塑性和能量转化效率；适用于多种压电陶瓷材料，工艺流程简单，可控性强，成本低、绿色环保，适合于批量生产多种尺寸类型的柔性驱动器、传感器、减震器。
Method for preparing piezoelectric ceramic fiber composite material driver based on freeze casting method
The invention relates to a method for preparing a piezoelectric ceramic fiber composite material driver based on a freeze casting method, which comprises the following steps of: by utilizing a freeze casting technology, adding an additive, a dispersing agent, a binder and a sintering aid into ceramic powder serving as a raw material to prepare ceramic slurry, freezing, drying in vacuum and sintering to obtain lamellar ceramic; impregnating and filling a polymer in vacuum to obtain a ceramic/polymer piezoelectric fiber compound; and plating interdigital electrodes on the two surfaces of the material by using technologies such as magnetron sputtering, 3D printing and the like to obtain an interdigital piezoelectric fiber composite material device. The freeze casting technology is adopted, the limitation of traditional preparation of piezoelectric fiber composite materials is broken through, the layered structure is more compact, the interlayer spacing can reach the micron order, and the electromechanical coupling performance and the electromechanical conversion efficiency of electronic devices are improved; meanwhile, the MFC preparation process is simplified, and the flexibility and plasticity and the energy conversion efficiency are improved; the method is suitable for various piezoelectric ceramic materials, simple in technological process, high in controllability, low in cost, environmentally friendly and suitable for batch production of flexible drivers, sensors and shock absorbers of various sizes and types.
一种基于冷冻铸造法制备压电陶瓷纤维复合材料驱动器的方法，利用冷冻铸造技术，以陶瓷粉末为原料，加入添加剂、分散剂、粘结剂和助烧剂，配制成陶瓷浆料，经冷冻、真空干燥、烧结后得到片层状陶瓷；将其在真空下浸渍填充聚合物，获得陶瓷/聚合物压电纤维复合物；利用磁控溅射、3D打印等技术，将材料双面镀上叉指型电极，得到叉指型压电纤维复合材料器件。本发明采用冷冻铸造技术，打破传统制备压电纤维复合材料的局限性，层状结构更加致密，层间距能够达到微米级，提高电子器件的机电耦合性和机电转换效率；同时简化MFC制备工艺，提升柔塑性和能量转化效率；适用于多种压电陶瓷材料，工艺流程简单，可控性强，成本低、绿色环保，适合于批量生产多种尺寸类型的柔性驱动器、传感器、减震器。
Method for preparing piezoelectric ceramic fiber composite material driver based on freeze casting method
一种基于冷冻铸造法制备压电陶瓷纤维复合材料驱动器的方法
ZHOU DAYU (Autor:in) / LI RUI (Autor:in) / SUN NANA (Autor:in) / WANG MENGXIAO (Autor:in) / XI JUAN (Autor:in)
28.07.2023
Patent
Elektronische Ressource
Chinesisch
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