利用裂解气相色谱-质谱法研究PA66/PA6合金的定性定量分析  

Study on Analysis of PA66/PA6 Alloy by Pyrolysis Gas Chromatography-Mass Spectrometry

作　　者：吴博 谢晓琼 李卫领 庞承焕 叶南飚 陈平绪 黄险波 WU Bo;XIE Xiao-qiong;LI Wei-ling;PANG Cheng-huan;YE Nan-biao;CHEN Ping-xu;HUANG Xian-bo(Enterprise Technology Center of Kingfa Science&Technology Co.,Ltd.,Guangzhou 510663,China;National Ploymer Materials Industry Innovation Center Co.,Ltd.,Guangzhou 510663,China;National Engineering Laboratory for Plastic Modification and Processing,Guangzhou 510663,China)

机构地区：[1]金发科技股份有限公司企业技术中心,广东广州510663 [2]国高材高分子材料产业创新中心有限公司,广东广州510663 [3]塑料改性与加工国家工程实验室,广东广州510663

出　　处：《塑料工业》2021年第7期94-98,10,共6页China Plastics Industry

基　　金：国家重点研发计划项目(2019YFF0216902)。

摘　　要：采用热裂解气相色谱质谱联用仪(PyGC-MS)结合傅里叶变换红外光谱仪(FTIR)和差示扫描量热仪(DSC)建立了聚酰胺66/聚酰胺6(PA66/PA6)合金的定性定量分析方法。选取环戊酮和己内酰胺分别作为聚酰胺66和聚酰胺6的特征裂解产物,建立了PA6在合金中的质量分数与己内酰胺的峰面积比的线性方程,再结合FTIR和DSC定性,实现了PA66/PA6合金中PA6组分的定性定量分析。结果显示:通过已知配比样进行验证分析,定量偏差小于5%,此方法无需前处理,测试效率高,准确度好,对尼龙的材质分析具有重要的实用价值。A qualitative and quantitative analysis method of polyamide 66(PA66)/PA6 alloy was established by pyrolysis gas chromatography-mass spectrometry(PyGC-MS)combined with Fourier transform infrared spectroscopy(FTIR)and differential scanning calorimeter(DSC).Caprolactam and cyclopentanone were selected as the characteristic pyrolysis products of PA6 and PA66,respectively,and the linear equation of the mass fraction ratio of PA6 in the alloy and the peak area ratio of caprolactam was established.The qualitative and quantitative analysis of PA6 composition in PA66/PA6 alloy were realized.The results show that the quantitative deviation is less than 5%through verification with known samples.This method does not require pre-treatment,has high test efficiency and good accuracy,and has important practical value for nylon material analysis.

关 键 词：聚酰胺66/聚酰胺6合金 裂解气相色谱-质谱法 傅里叶变换红外光谱法 定性定量 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]