【摘要】 <正> 虽然四氟乙烯-六氟丙烯共聚物(简称 F₄₆)有着与聚四氟乙烯相近的结构、类似的性质和用途,但对它的热行为的研究却远没有象对聚四氟乙烯那样广泛和深入。有关 F₄₆热分解,热稳定性报道限于较窄的温度范围,研究手段亦以热失重分析方法（TG）居多。本文报更多还原

【Abstract】 The themal degradation of poly（tetrafluoroethylene-hexafluoropropylene）（F₄（?）） has been investigated at 350～900℃ by pyrolysis-gas chromatography,combined with IR and thermogravimetry（TG）analysis.Among the pyrolysis gases at the temperature range,two monomers of the F₄₆,tetrafluoroethylene（C₂F₄）and hexafluoropropylene（C₃F₆）,are the major products.From the relative content of C₃F₆（or C₂F₄）plotted against the pyrolysis temperature,the copolymer clearly decomposes in two stages.The thermal degradation behaviour of the F₄₆ was discussed in this paper.更多还原