ZnO polycrystalline ceramic with high breakdown field strength, preparation method and cable sheath protector

• Main Authors: LIU DANBING, LI DI, LI WENBO, LI HUIHONG, LI ZHIYU, ZHUO ZHIHAO, LI YILIN, HUANG JIAMING, WANG QIANG, YE YUTING, CHEN LIN, ZHU WUZHOU, CHEN ZHAOWEI, LIAO YANQUN, WU SIHENG, YI YINXIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRICITY; LIME, MAGNESIA; METALLURGY; REFRACTORIES; RESISTORS; SLAG; TREATMENT OF NATURAL STONE

The invention belongs to the technical field of cables, and particularly relates to ZnO polycrystalline ceramic with high breakdown field strength, a preparation method of the ZnO polycrystalline ceramic and a cable sheath protector.The ZnO polycrystalline ceramic with the high breakdown field strength is prepared by modifying nano-zinc oxide and antimony oxide in raw materials of the ZnO polycrystalline ceramic with the high breakdown field strength and improving a sintering process. The prepared ZnO polycrystalline ceramic is good in grain growth, uniform in grain size distribution, low in pore content and high in density, the breakdown field strength of the ZnO polycrystalline ceramic is improved, and the technical problem that in the prior art, the breakdown field strength of ZnO-based polycrystalline ceramic is low is solved. 本申请属于电缆技术领域，尤其涉及一种高击穿场强的ZnO多晶陶瓷及制备方法和电缆护层保护器，本申请通过对高击穿场强的ZnO多晶陶瓷原料中纳米氧化锌、氧化锑的改性，以及烧结工艺的改进，使得制备得到的ZnO多晶陶瓷晶粒生长良好、晶粒尺寸分布均匀，气孔含量少、致密度高，提高了ZnO多晶陶瓷击穿场强，解决现有技术中ZnO基多晶陶瓷的击穿场强较低的技术问题。