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    • 5. 发明授权
    • Method for the treatment of inner surfaces of a tubular body of a
plastic with low temperature plasma
    • 用低温等离子体处理塑料管状体的内表面的方法
    • US4261806A
    • 1981-04-14
    • US112194
    • 1980-01-15
    • Michihiko AsaiYoshio SudaKiyoshi ImadaSusumu UenoHirokazu Nomura
    • Michihiko AsaiYoshio SudaKiyoshi ImadaSusumu UenoHirokazu Nomura
    • C08J7/00A61L33/00B05D7/22B29C59/14B01K1/00B05D3/06
    • B05D7/22A61L33/0094B05D1/62B05D3/141B05D7/222B29C59/142B05D2201/00B29K2023/00B29K2027/06B29L2023/22
    • The invention provides an effective method for subjecting the inner surface of a tubular body made of a plastic resin to a treatment with low temperature plasma according to which the tubular body is dipped in an insulating oil bath while the inside of the tubular body is filled with a plasma gas under a reduced pressure and electric power for the generation of a low temperature plasma is supplied to electrodes surrounding the tubular body in the insulating oil. Several of the problems in the prior art methods can be solved by the present invention such as undesirable thermal degradation of the tube surface by the evolved by the electric discharge, and power loss due to the generation of plasma outside the tubular body. When the method of the invention is applied to the treatment of a continuous length tubular body, the tubular body is continuously moved in the insulating oil through the electrodes surrounding it, with the optional provision of a sleeve made of an insulating material placed between the electrodes and the tubular body, so as that the tubular body is free from adverse effects caused by direct contact with the electrodes.
    • 本发明提供了一种有效的方法,用于使由塑料树脂制成的管状体的内表面经受低温等离子体处理,根据该等离子体,管状体浸入绝缘油浴中,同时管状体的内部被填充 将用于产生低温等离子体的减压下的等离子体气体和电力供给到绝缘油中的管状体周围的电极。 通过本发明可以解决现有技术方法中的几个问题,例如通过放电产生的管表面的不期望的热降解,以及由于在管体外部产生等离子体造成的功率损耗。 当将本发明的方法应用于连续长度管状体的处理时,管状体通过围绕它的电极在绝缘油中连续移动,可选地提供由置于电极之间的绝缘材料制成的套筒 以及管状体,使得管状体没有与电极直接接触引起的不利影响。