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航天材料及工艺研究所 先进功能复合材料技术国防科技重点实验室,北京 100076
刘 亮,高级工程师,研究方向:复合材料化学表征,E-mail:lily9407132@sina.com
收稿日期:2024-08-03,
修回日期:2024-09-02,
录用日期:2024-10-23,
纸质出版日期:2025-04-15
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刘亮,胡宏林,黄娜,蒋丽琴,余瑞莲,李弘瑜.裂解气相色谱-质谱法测定酚醛树脂热解气体平均分子量[J].分析测试学报,2025,44(04):628-636.
LIU Liang,HU Hong-lin,HUANG Na,JIANG Li-qin,YU Rui-lian,LI Hong-yu.Determination of Average Molecular Weight of Phenolic Resin Pyrolysis Gas by Pyrolysis Gas Chromatography-Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(04):628-636.
刘亮,胡宏林,黄娜,蒋丽琴,余瑞莲,李弘瑜.裂解气相色谱-质谱法测定酚醛树脂热解气体平均分子量[J].分析测试学报,2025,44(04):628-636. DOI: 10.12452/j.fxcsxb.240803274.
LIU Liang,HU Hong-lin,HUANG Na,JIANG Li-qin,YU Rui-lian,LI Hong-yu.Determination of Average Molecular Weight of Phenolic Resin Pyrolysis Gas by Pyrolysis Gas Chromatography-Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(04):628-636. DOI: 10.12452/j.fxcsxb.240803274.
采用裂解气相色谱-质谱联用技术(PyGC-MS)对酚醛树脂的热解气体平均分子量进行了测定方法研究。将样品粉碎过筛后,在550 ℃温度下裂解得到相应的裂解色谱图,采用峰面积归一化法对热解气体进行定量分析,并通过计算得到其平均分子量。结果表明:该方法测定结果与理论值的误差
<
1%,相对标准偏差(RSD,
n
=6)为0.79%。方法简便、准确度高,适合酚醛树脂热解气体平均分子量的测定。经烧蚀实验验证,可用于酚醛树脂热解性能和烧蚀性能的评价。
Pyrolysis gas chromatography-mass spectrometry(PyGC-MS) was used to determine the average molecular weight of phenolic resin pyrolysis gas. The samples were injected after crushing and sieving. The pyrograms of the samples were obtained at a pyrolysis temperature of 550 ℃. The pyrolysis gas was analyzed quantitatively by area normalization,and the average molecular weight was calculated. The result shows that the error from theoretical value was less than 1%,and the relative standard deviation(RSD,
n
=6) is 0.79%.The method is simple,convenient and accurate,and it is suitable for the determination of average molecular weight of phenolic resin pyrolysis gas. Verified by ablation tests,it can be used for evaluating the pyrolysis and ablation properties of phenolic resins.
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