【摘要】 本文推导了求PET热氧化降解速度常数的公式。采用热重法、粘度法和羧端基法,对不同催化稳定体系的PET,求出了热氧化降解速度常数。根据实验结果,讨论了热氧化降解机理。更多还原

【Abstract】 Formula to calculate the thermooxidative degradation rate constant(TOD) of polyethylene terephthalate(PET) is derived; the TOD constants of PET containing different catalysts and stabilizers are studied by methods of TG, intrinsic viscosity and carboxylic end group determination, mechanism of TOD is discussed based on the experimental results.更多还原