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    • 4. 发明申请
    • Inner magnetic shield material for cathode ray tube and process for producing the same
    • 用于阴极射线管的内磁屏蔽材料及其制造方法
    • US20060096668A1
    • 2006-05-11
    • US10518149
    • 2003-06-26
    • Yoshikazu YamanakaHisao SakamotoKenichiro KobayashiSachio Matsuo
    • Yoshikazu YamanakaHisao SakamotoKenichiro KobayashiSachio Matsuo
    • C22C1/00H01J29/88
    • H01J29/003C23C30/00H01F1/37
    • An inner magnetic shield material for use in manufacturing an inner magnetic shield to be installed inside a color picture tube comprises a steel strip having a coating film of an organic resin which consists essentially of C and H, or of C, H, and O, or of C, H, O, and N on at least one surface of the steel strip, wherein the at least one surface of the steel strip has a surface roughness (Ra) of 0.2-3 μm and the organic resin coating film has a thickness (T) of 0.1-6 μm. Preferably, the ratio T/Ra is in the range of 0.2-4.0. The organic resin coating film contains particles of a wax dispersed therein, wherein the ratio (φ/T) of average particle diameter (φ) of the wax to film thickness (T) is in the range of 0.5-5, and the content of the wax in the film is such that 2-20% of the surface of the coating film is occupied by the wax when the surface is observed under an electron microscope. The organic resin coating film may contain one of (a) at least one coupling agent in a total amount of 2-50 wt % and (b) at least one metal oxide selected from SiO2, Fe3O4, Fe2O3, Ni—O, Zr—O, Cr2O3, and Al2O3 in a total amount of 2-80 wt %, or both.
    • 用于制造安装在彩色显像管内部的内部磁屏蔽的内部磁屏蔽材料包括具有基本上由C和H或C,H和O组成的有机树脂涂膜的钢带, 或C,H,O和N在钢带的至少一个表面上,其中钢带的至少一个表面具有0.2-3μm的表面粗糙度(Ra),并且有机树脂涂膜具有 厚度(T)为0.1-6μm。 优选地,比率T / Ra在0.2-4.0的范围内。 有机树脂涂膜含有分散在其中的蜡颗粒,其中蜡的平均粒径(phi)与膜厚(T)的比(phi / T)在0.5-5的范围内, 膜中的蜡使得当在电子显微镜下观察表面时,涂膜的表面的2-20%被蜡占据。 有机树脂涂膜可以含有(a)总量为2-50重量%的至少一种偶联剂和(b)至少一种选自SiO 2,Fe < Fe 3 O 3,N 2 O 3,Ni-O,Zr-O,Cr 2 O 3, 或总共2-80重量%的Al 2 O 3 3和/或两者。