【摘 要】
：
用一系列不同熔融流动速率的聚丙烯样品分别用正庚烷萃取法和二甲苯可溶物法分析样品中立体规整性成分占得质量分数,再将正庚烷萃取分析法测定的结果与二甲苯不溶物法测定的
【机 构】
：
内蒙古中煤蒙大新能源化工有限公司质检中心,
论文部分内容阅读
用一系列不同熔融流动速率的聚丙烯样品分别用正庚烷萃取法和二甲苯可溶物法分析样品中立体规整性成分占得质量分数,再将正庚烷萃取分析法测定的结果与二甲苯不溶物法测定的结果分别与样品的熔融流动速率(MFR)作图,通过试验数据和关系曲线可发现两个分析方法所得结果的异同:在熔融流动速率为4—8g/10min的范围内,正庚烷萃取法和二甲苯可溶物法的分析结果比较接近,但在熔融流动速率小于4g/10min或熔融流动速率大于8g/10min时两种方法的结果差别较大。
A series of polypropylene samples with different melt flow rates were used to analyze the content of the stereoregularity components in the samples by the n-heptane extraction method and the xylene soluable method, respectively, and the result of the n-heptane extraction analysis method was compared with that of the bis The results of the toluene insolubles assay were plotted against the melt flow rate (MFR) of the sample, and the similarities and differences between the results obtained from the two analytical methods were found on the basis of the experimental data and the relationship curve: at a melt flow rate of 4-8 g / 10 min The results of n-heptane extraction and xylene solu- tion are close, but the results of the two methods are quite different when the melt flow rate is less than 4g / 10min or the melt flow rate is more than 8g / 10min.
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