Zinc oxide varistor
    1.
    发明授权
    Zinc oxide varistor 失效
    氧化锌变阻器

    公开(公告)号:US4559167A

    公开(公告)日:1985-12-17

    申请号:US676303

    申请日:1984-11-29

    IPC分类号: H01C7/10 H01C7/102

    摘要: A varistor of metal oxides, predominantly zinc oxide (ZnO), is provided on its lateral surface between two contact faces, with a coating consisting at least partially of an organic polymer. In order to prevent rapid degradation in oxygen-free surroundings, the coating contains at least one oxygen barrier layer or is formed entirely as such a layer, which contains filler particles in an organic matrix material. The filler is here taken from the group comprising the following substances or groups of substances: synthetic mica, natural mica, vermiculite, micaceous iron ore, glass and other non-metallic inorganic substances present in the form of platelets or flakes; metal oxides, active part material in a pulverulent form and other oxygen-releasing inorganic substances. The organic matrix material is selected from the group comprising epoxide resins, alkyd resins, polyurethanes, silicone resins, unsaturated polyester resins and acrylates. The oxygen barrier layer or layers can be formed by a coating consisting of a band with a carrier of paper, plastic or glass fabric, the band being wound once or several times around the active part.

    摘要翻译: 在两个接触面之间的侧表面上提供主要为氧化锌(ZnO)的金属氧化物的变阻器,其中涂层至少部分由有机聚合物组成。 为了防止无氧环境中的快速降解,涂层含有至少一个氧阻隔层,或者完全形成为在有机基质材料中含有填料颗粒的层。 这里的填料来自包括以下物质或物质组的组:合成云母,天然云母,蛭石,云母铁矿石,玻璃和其它以血小板或薄片形式存在的非金属无机物质; 金属氧化物,粉状形式的活性成分材料和其它释放氧的无机物质。 有机基质材料选自环氧树脂,醇酸树脂,聚氨酯,硅树脂,不饱和聚酯树脂和丙烯酸酯类。 氧阻隔层可以通过由具有纸,塑料或玻璃织物的载体的带组成的涂层形成,该带围绕活性部分缠绕一次或数次。

    Process for the preparation of a voltage-dependent ceramic resistance
based on ZnO, and a resistance produced by the process
    2.
    发明授权
    Process for the preparation of a voltage-dependent ceramic resistance based on ZnO, and a resistance produced by the process 失效
    用于制备基于ZnO的电压依赖性陶瓷电阻的方法,以及由该方法产生的电阻

    公开(公告)号:US4767729A

    公开(公告)日:1988-08-30

    申请号:US857062

    申请日:1986-04-29

    IPC分类号: H01C7/112 H01C17/30 C04B35/02

    CPC分类号: H01C17/30 H01C7/112

    摘要: A voltage-dependent ceramic resistance (varistor) based on ZnO and other addition elements, mostly in the form of oxides, is prepared, in that the addition elements are added to a suspension of ZnO powder in H.sub.2 O as chemical substances in the form of aqueous, mutually compatible, non-separating solutions of organic salts, acids, complex compounds and/or colloids, the suspension/aqueous solution formed in this manner is dried in the presence of air in a spray dryer, the free-flowing powder/granules prepared in this manner are pressed to a body and the pressed body is subjected to heat treatment, in order to decompose the organic substances, convert them into oxides, remove the decomposition products, and is finally sintered by successive heating to 650.degree. C., 900.degree. C. and 1100.degree. to 1300.degree. C. The water-soluble chemical substances to be used are preferably organic salts such as formates, acetates, lactates, tartrates, citrates, ammonium citrates and ammonium tartrates. Other suitable additions ar ammonia, ammonium salts of hydroxycarboxylic acids, organic amines, ammonium tetraborate, ammonium dichromate, ammonium silicotungstate, oligo-silicic acid and silicon hydroxide sol.

    摘要翻译: 制备基于ZnO和其他添加元素的电压依赖性陶瓷电阻(压敏电阻),其主要是氧化物形式,其中将添加元素加入到作为H 2 O形式的化学物质的H 2 O中的ZnO粉末的悬浮液中 相互兼容的有机盐,酸,络合物和/或胶体的非分离溶液,以这种方式形成的悬浮液/水溶液在空气存在下在喷雾干燥器中干燥,制备自由流动的粉末/颗粒 以这种方式压制到主体上,并且对压制体进行热处理,以便分解有机物质,将它们转化为氧化物,除去分解产物,最后通过连续加热至650℃,900 所用的水溶性化学物质优选为有机盐,例如甲酸盐,乙酸盐,乳酸盐,酒石酸盐,柠檬酸盐,柠檬酸铵和酒石酸铵。 其它合适的添加剂为氨,羟基羧酸的铵盐,有机胺,四硼酸铵,重铬酸铵,硅钨酸铵,低聚硅酸和氢氧化硅溶胶。

    Lightning arrester including an active resistor core
    3.
    发明授权
    Lightning arrester including an active resistor core 失效
    避雷器包括一个有源电阻芯

    公开(公告)号:US4816959A

    公开(公告)日:1989-03-28

    申请号:US90894

    申请日:1987-08-31

    摘要: A lightning arrester with a monolithic, active resistor core made of voltage-dependent resistance material based on ZnO is produced by mixing and grinding the base materials ZnO+metal oxides, producing pourable granules, filling into a silicone rubber tube and pressing cold-isostatically or radially into a moulding, sintering of the moulding into a self-supporting, monnolithic resistor core, converting the resistor core, with an insulator by casting around, coating or painting with an epoxy resin, silicone material or concrete polymer or by drawing over a shrink-fit tube or by glazing. The resultant lightning arrester has a simple configuration, good reproducibility, cost-effective mass production.

    摘要翻译: 通过将基材ZnO +金属氧化物混合研磨,生产可倾倒的颗粒,填充到硅橡胶管中并压制冷等静压制造具有由基于ZnO的由电压依赖的电阻材料制成的单片,有源电阻芯的避雷器 将模制件径向放入模制件中,将模制件烧结成自支撑单晶电阻芯,通过围绕环氧树脂,硅树脂材料或混凝土聚合物浇注,涂覆或涂覆绝缘体或通过拉伸收缩来将电阻芯转换成绝缘体 - 配管或玻璃。 产生的避雷器结构简单,重现性好,批量生产成本效益高。

    Manufacturing process for surge arrester module using pre-impregnated composite
    4.
    发明申请
    Manufacturing process for surge arrester module using pre-impregnated composite 有权
    使用预浸复合材料的电涌放电器模块的制造工艺

    公开(公告)号:US20050160587A1

    公开(公告)日:2005-07-28

    申请号:US10762290

    申请日:2004-01-23

    IPC分类号: H01C7/12 H01C7/02

    摘要: An electrical module assembly used in a surge arrester is manufactured by wrapping an electrical module assembly including at least one metal oxide varistor (MOV) disk to which a reinforcing structure including a pre-impregnated epoxy/glass-fiber composite has been applied with shrink film and compacting the wrapped electrical module assembly by heating the shrink film such that the shrink film shrinks and applies a radially compressive force to the electrical module assembly. The wrapped electrical module assembly then is cured at a temperature at which the shrink film no longer applies a compressive force.

    摘要翻译: 在避雷器中使用的电气模块组件是通过将包括至少一个金属氧化物变阻器(MOV)盘的电气模块组件包裹在一起而制成的,其中包括预浸渍的环氧树脂/玻璃纤维复合材料的增强结构已被施加到收缩膜 以及通过加热所述收缩膜来压缩所述包裹的电气模块组件,使得所述收缩膜收缩并向所述电气模块组件施加径向压缩力。 然后,包裹的电气模块组件在收缩膜不再施加压缩力的温度下固化。

    Process for manufacturing a precursor powder for use in making a
varistor and a powder manufactured in this process
    5.
    发明授权
    Process for manufacturing a precursor powder for use in making a varistor and a powder manufactured in this process 失效
    制造前驱体粉末的方法和制造过程中制造的粉末和粉末的方法

    公开(公告)号:US5143711A

    公开(公告)日:1992-09-01

    申请号:US446459

    申请日:1989-12-05

    CPC分类号: H01C7/112 C01B13/363

    摘要: A method for manufacturing a precursor powder for use in making a varistor is disclosed. This precursor powder is produced by preparing a homogeneous aqueous dispersion of metal oxides and/or metal hydroxides and heating the dispersion in a closed pressure reactor to a temperature between 200.degree. C. and 350.degree. C. for hydrothermally treating the homogeneous dispersion. The precursor powder produced in the afore-described method is highly homogeneous and of controlled crystal phase and morphology and after mixing with zinc oxide powder can homogeneously be reacted with the zinc oxide in a ceramic process.

    摘要翻译: 公开了一种用于制造用于制造变阻器的前体粉末的方法。 该前体粉末是通过制备金属氧化物和/或金属氢氧化物的均匀水分散体并在密闭压力反应器中将分散体加热至200℃至350℃之间的温度来制备的,以水热处理均匀分散体。 在上述方法中制备的前体粉末是高度均匀的并且具有受控的结晶相和形态,并且与氧化锌粉末混合后,可以在陶瓷工艺中与氧化锌均匀地反应。

    Mechanical reinforcement structure for fuses
    6.
    发明申请
    Mechanical reinforcement structure for fuses 失效
    保险丝的机械加强结构

    公开(公告)号:US20050110607A1

    公开(公告)日:2005-05-26

    申请号:US10716543

    申请日:2003-11-20

    摘要: A fuse includes an electrical assembly and a fuse tube assembly. The electrical assembly has two electrical contacts accessible from the exterior of the fuse and a fuse element in contact with the two electrical contacts. The fuse tube assembly includes a support structure surrounding at least a portion of the electrical assembly and a reinforcing structure formed over the support structure and in contact with at least a portion of the electrical assembly. The reinforcing structure is made of a fiber matrix pre-impregnated with a resin.

    摘要翻译: 保险丝包括电气组件和保险丝管组件。 电气组件具有可从保险丝的外部接近的两个电触头和与两个电触点接触的保险丝元件。 熔丝管组件包括围绕电组件的至少一部分的支撑结构,以及形成在支撑结构上并与电组件的至少一部分接触的加强结构。 加强结构由预浸渍有树脂的纤维基质制成。

    Process for the production of a lightning arrester and products produced
thereby
    7.
    发明授权
    Process for the production of a lightning arrester and products produced thereby 失效
    避雷器的生产过程和由此产生的产品

    公开(公告)号:US4729053A

    公开(公告)日:1988-03-01

    申请号:US809339

    申请日:1985-12-16

    摘要: A lightning arrester with a monolithic, active resistor core made of voltage-dependent resistance material based on ZnO is produced by mixing and grinding the base materials ZnO+metal oxides, producing pourable granules, filling into a silicone rubber tube and pressing cold-isostatically or radially into a moulding, sintering of the moulding into a self-supporting, monolithic resistor core, converting the resistor core, with an insulator by casting around, coating or painting with an epoxy resin, silicone material or concrete polymer or by drawing over a shrink-fit tube or by glazing. The resultant lightning arrester has a simple configuration, good reproducibility, cost-effective mass production.

    摘要翻译: 通过将基材ZnO +金属氧化物混合研磨,生产可倾倒的颗粒,填充到硅橡胶管中并压制冷等静压制造具有由基于ZnO的由电压依赖的电阻材料制成的单片,有源电阻芯的避雷器 将模制件径向放入模制件中,将模制件烧结成自支撑的单片电阻芯,通过围绕环氧树脂,硅树脂材料或混凝土聚合物涂覆或涂覆绝缘体或通过拉伸收缩来将电阻芯转换成绝缘体 - 配管或玻璃。 产生的避雷器结构简单,重现性好,批量生产成本效益高。

    Process for the production of a lightning arrester and products produced
thereby
    9.
    发明授权
    Process for the production of a lightning arrester and products produced thereby 失效
    避雷器的生产过程和由此产生的产品

    公开(公告)号:US4811478A

    公开(公告)日:1989-03-14

    申请号:US90913

    申请日:1987-08-31

    摘要: A lightning arrester with a monolithic, active resistor core made of voltage-dependent resistance material based on ZnO is produced by mixing and grinding the base materials Zno+metal oxides, producing pourable granules, filling into a silicone rubber tube and pressing cold-isostatically or radially into a moulding, sintering of the moulding into a self-supporting, monolithic resistor core, converting the resistor core, with an insulator by casting around, coating or painting with an epoxy resin, silicone material or concrete polymer or by drawing over a shrink-fit tube or by glazing. The resultant lightning arrester has a simple configuration, good reproducibility, cost-effective mass production.

    摘要翻译: 通过混合和研磨基材Zno +金属氧化物,生产可倾倒的颗粒,填充到硅橡胶管中并压制冷等静压制造具有由基于ZnO的由电压依赖的电阻材料制成的单片,有源电阻芯的避雷器 将模制件径向放入模制件中,将模制件烧结成自支撑的单片电阻芯,通过围绕环氧树脂,硅树脂材料或混凝土聚合物涂覆或涂覆绝缘体或通过拉伸收缩来将电阻芯转换成绝缘体 - 配管或玻璃。 产生的避雷器结构简单,重现性好,批量生产成本效益高。