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ABS树脂的裂解色谱分析,国外文献已有报导,但都需要借助红外光谱或化学分析才能最终确定未知样品的百分组成。这样不仅操作麻烦,实验时间较长,而且由于ABS中存在凝胶,样品处理往往很不方便。同时实验误差约5％。我们的工作是简化实验操作,缩短实验时间,提高实验的重复性,建立色谱分析结果与ABS组成之间的定量关系,从而避免用其它实验方法而直接采用裂解色谱定量测定ABS组成,以便用作工厂生产中的快速分析。我们的实验是将岛津GC-5A管式炉裂解器安装在国产102G气相层析仪上进行的,以H_2为载气,样品在550℃条件下裂解,裂解碎片经过20％PPO-102白色担体、不锈钢柱(柱长4米、内径3毫米、柱温138℃)分离,热导池作鉴定器。所得裂解色谱指纹图如图1所示。
Analysis of pyrolysis resin of ABS resin has been reported in foreign literature, but it is necessary to determine the percentage composition of unknown sample by infrared spectroscopy or chemical analysis. This is not only cumbersome to operate, it takes a long time to perform, and sample handling is often inconvenient due to the presence of gels in ABS. At the same time experimental error of about 5%. Our work is to simplify the experimental operation, to shorten the experimental time, to improve the reproducibility of the experiment, to establish the quantitative relationship between the chromatographic analysis results and the ABS composition, so as to avoid using other experimental methods to directly determine the ABS composition by using the pyrolysis chromatography so as to be used as Quick analysis in factory production. In our experiment, the Shimadzu GC-5A tube cracker was mounted on a domestic 102G gas chromatograph. The sample was pyrolyzed at 550 ° C using H 2 as a carrier gas. The cracked fragments were passed through a 20% PPO-102 white Support, stainless steel column (column length 4 meters, diameter 3 mm, column temperature 138 ℃) separation, thermal conductivity pool for the identification device. The resulting chromatogram cleavage chromatography shown in Figure 1.