Process for determining carbon black concentration and distribution in rubber compounds and other carbon black containing materials and device to carry out the process
    1.
    发明公开

    公开(公告)号:EP0652430A1

    公开(公告)日:1995-05-10

    申请号:EP93113036.3

    申请日:1993-08-13

    IPC分类号: G01N21/63 G01N21/71 G01N33/44

    CPC分类号: G01N21/718 G01N33/445

    摘要: A method & apparatus for determining carbon black in rubber composites (e.g. for tyres) based on time-resolved laser breakdown spectroscopy (TREUBS) are described. A laser beam (4a) is raster scanned across the sample surface (1a), and atomic or molecular emission from the laser excited plasma (4c) is collected from measuring points (4b), spectrally dispersed by grating (11) and detected using the photodiode array (12). To determine the carbon black distribution, spectral line intensity ratios relative to carbon acting as internal standard, for elements present in the sample are measured at two different delay times after the exciting laser pulse. At short delay times

    摘要翻译: 描述了基于时间分辨激光击穿光谱法(TREUBS)测定橡胶复合材料(例如轮胎)中的炭黑的方法和设备。 在样品表面(1a)上扫描激光束(4a),并且从测量点(4b)收集来自激光激发等离子体(4c)的原子或分子发射,通过光栅(11)进行光谱分散,并使用 光电二极管阵列(12)。 为了确定炭黑分布,对于作为内部标准的碳的谱线强度比,对于在激发激光脉冲之后的两个不同的延迟时间,测量样品中存在的元素。 短时间延迟时间<0.5 NS,碳排放主要是由于炭黑; 在更长的延迟时间,信号表示矩阵中存在的总碳。 强度比与校准曲线的比较然后在测量点产生炭黑的浓度。