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    Porcelain insulator and method of manufacturing the same
    9.
    发明公开
    Porcelain insulator and method of manufacturing the same 有权
    Porzellanisolator和Verfahren zu seiner Herstellung

    公开(公告)号：EP1039485A1

    公开(公告)日：2000-09-27

    申请号：EP00106315.5

    申请日：2000-03-23

    申请人： NGK INSULATORS, LTD.

    发明人： Hiramitsu, Kumeo ,  Imai, Osamu ,  Ikari, Tokunori

    IPC分类号： H01B19/04 ,  H01B17/50

    CPC分类号： C04B41/009 ,  C04B41/5038 ,  C04B41/87 ,  H01B19/04 ,  C04B41/4539 ,  C04B41/5041 ,  C04B33/26

    摘要： A porcelain insulator including a porcelain insulator main body and a coating layer formed on a surface of the porcelain insulator main body, the coating layer being made of porcelain raw materials including mainly materials of high dielectric constant and having a relative dielectric constant larger than 4, wherein a ration between maximum value and minimum value of relative dielectric constants at micro portions in the coating layer along a thickness direction of the coating layer is smaller than 2. The porcelain insulator mentioned above can be manufactured by the steps of; (1) preparing said porcelain insulator main body; (2) preparing coating materials as a slurry by (a) grinding raw materials and mixing a clay therein to prepare porcelain raw materials made of 50-60 wt% of SiO 2 , 20-30 wt% of Al 2 O 3 and a remainder of MgO, CaO, K 2 O, Na 2 O, (b) preparing materials of high dielectric constant having a relative dielectric constant larger than 10 separately; and (c) mixing 100 parts by weight of the thus prepared porcelain raw materials and 3-10 parts by weight of the thus prepared materials of high dielectric constant; (3) applying the thus prepared coating materials on a surface of the porcelain main body; and (4) firing the porcelain main body in which the coating materials are applied on its surface.

    摘要翻译： 一种瓷绝缘体，其包括瓷绝缘体主体和形成在瓷绝缘体主体的表面上的涂层，所述涂层由主要包括高介电常数且相对介电常数大于4的材料的陶瓷原料制成， 其特征在于，所述涂层在所述涂层的微小部分的最大值与最小值之间的比例沿着所述涂层的厚度方向的比例小于2.上述瓷绝缘体可以通过以下步骤制造。 （1）准备瓷绝缘子主体; （2）通过（a）研磨原料并将粘土混合以制备由50-60重量％的SiO 2，20-30重量％的Al 2 O 3和剩余的MgO，CaO制成的瓷原料，制备作为浆料的涂料; ，K2O，Na2O，（b）分别制备相对介电常数大于10的高介电常数的材料; 和（c）将100重量份如此制备的瓷原料和3-10重量份如此制备的高介电常数材料混合; （3）将如此制备的涂料施加到瓷主体的表面上; 和（4）在表面施加涂料的瓷主体进行烧制。