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GB/T13477.18-2002拉力機做密封材料剝離

作者：來源：发布日期： 2020.10.20

信息摘要：

GB/T13477.18-2002拉力機做密封材料剝離

GB/T13477是關于建築用密封材料的試驗方法規定，包括很多部分，其中的第18部分，是關于剝離粘結性的測定方法，通過拉伸試驗機（拉力機）來完成。

測試原理是，將被測密封材料塗在粘結基材上，並埋入一布條，做成試樣。于規定條件下，將試樣養護至規定時間，然後使用拉力機將埋放的布條沿180度方向從粘結基材上剝下，從而測定剝下布條時的拉力值及密封材料與粘結基材剝離時的破壞狀況。

一般在室溫爲23度，相對濕度50%條件下進行試驗。

拉力試驗機，要求試驗速度調至50mm/min，配備拉伸夾具和自動記錄裝置。

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. 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