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    • 8. 发明授权
    • Plastics materials having electrodeposited metal coatings
    • 具有电沉积金属涂层的塑料材料
    • US3661538A
    • 1972-05-09
    • US3661538D
    • 1969-05-21
    • CIBA LTD
    • BROWN PETER THOMASROWLAND JOHN
    • B05D1/34C25D5/56C23B5/60B44D1/092C23F17/00
    • B05D1/34C25D5/56Y10S428/935Y10T428/12569Y10T428/12597Y10T428/12694Y10T428/12778Y10T428/12854Y10T428/12868Y10T428/12882Y10T428/12903Y10T428/249951Y10T428/2956Y10T428/31529
    • It is known to coat plastics materials, especially thermoplastics such as ABS, with metal by electrodeposition, typically with chromium on top of nickel. Conventional methods are often unsatisfactory when applied to thermosetting resinbased articles, the metal coating peeling or flaking off when the articles are subjected to repeated changes in temperature. It has now been found that copper or nickel coatings adhere well to surfaces, prepared in a conventional manner, of thermosetting plastics as well as of thermoplasts, provided that the coatings are electrodeposited in a manner such that they have an average stress in tension of at least 2,000 kg./sq. cm. E.g., a molding prepared from ''''Araldite'''' MY 750, HT 972, calcined china clay and glass fibers, is prepared for electroplating by A. ETCHING WITH CHROMIC ACID B. DEPOSITING A FILM OF PALLADIUM THROUGH TREATMENT WITH STANNOUS CHLORIDE AND PALLADIUM CHLORIDE SOLUTIONS C. DEPOSITING A FILM OF COPPER OR NICKEL BY REDUCTION OF COPPER SULPHATE OR NICKEL SULPHATE SOLUTIONS. Next, a nickel coating is electrodeposited under conditions such that it had an average stress in tension of 2,440 to 6,460 kg./sq. cm.: this coating being dull, a bright, lightly stressed nickel coating was electrodeposited before the final layer, of chromium, was applied.
    • 已知用金属涂覆塑料材料,特别是诸如ABS的热塑性塑料,通常通过电沉积,通常在镍顶部涂覆铬。 当用于热固性树脂基制品时,常规方法通常不令人满意,当制品经受重复的温度变化时,金属涂层剥落或剥落。 现在已经发现,铜或镍涂层很好地粘附在以常规方式制备的热固性塑料以及热塑性塑料的表面上,条件是涂层以这样的方式电沉积,使得它们具有在 至少2000 kg./sq。 厘米。