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不同组成的四氟乙烯-六氟丙烯共聚物(以下简称FEP)其物理和加工性能也不同。Alcatsulca等应用核磁共振、居里点裂解气相色谱和红外光谱法测定了FEP的组成,但其裂解气相色谱法测得的数据未能令人满意。本文使用居里点裂解气相色谱法对不同组成的FEP样品进行了测定,选择裂解产物中的四氟乙烯与六氟丙烯碎片为定量特征峰,其含量的相对变化,能反映FEP的组成。
Different composition of tetrafluoroethylene - hexafluoropropylene copolymer (hereinafter referred to as FEP) its physical and processing properties are also different. Alcatsulca et al. Determined the composition of FEP by using nuclear magnetic resonance, Curie point pyrolysis gas chromatography and infrared spectroscopy, but the data measured by pyrolysis gas chromatography was unsatisfactory. In this paper, FEP samples with different compositions were determined by Curie Point Pyrolysis Gas Chromatography. Tetrafluoroethylene and hexafluoropropylene fragments in the pyrolysis products were selected as the quantitative characteristic peaks. The relative changes in their content could reflect the composition of FEP.