专利汇可以提供Electric insulating material and capacitor专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain an insulator whose dielectric property is stable by using a film-shaped substance consisting of mixture of at least one kind, which is selected between titanium oxide and titanic acid metallic salt, and resin, whose glass transition point is specified, for electric insulating material used for a capacitor, and further prescribing the thickness, flatness, etc., of the film-shaped substance.
CONSTITUTION: One kind or two kinds of titanic acid metallic salts such as titanium oxide, barium titanate, lead titanate, etc., of rutile-type, anatase-type, or the like are mixed. Hereupon, the average grain diameter of these particles should be preferably 1μm or less and the particles above 30μm shall be within 30%. Next, they are mixed with resin whose glass transition point is 65°C or more, for example, polyethylene telephthalate, polystyrene, aliphatic polyamide, etc., and this is made into film shape. At this time, the thick of this film-shaped substance as 0.1-30μm, the depth of the center line at the surface as 0.01-5.0μm, and the average sectional flatness of surface projections as 0.005-0.3, are prescribed, respectively. By doing it this way, an insulator having high permittivity, which is fit for practical use even if thin, can be obtained.
COPYRIGHT: (C)1990,JPO&Japio,下面是Electric insulating material and capacitor专利的具体信息内容。
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