【摘要】 以氯化亚锡二水合物为活性剂制备了酚醛树脂（PF）硫化丁腈橡胶（NBR）,考察了氯化亚锡二水合物对PF硫化NBR硫化特性的影响,并探讨了硫化机理。分别采用差减微分法（Freeman–Carroll）、Kissinger法和Ozawa法计算了硫化反应的动力学参数,建立了反应的自催化模型以及n级反应模型,得到了反应的动力学方程。结果表明,所建模型能够反映PF硫化NBR的反应过程,研究体系的n级动力学模型为dα/dt=1.7×10¹⁶e^{-133 466}（1-α）^0.95。更多还原

【Abstract】 Phenolic resin（PF）-vulcanized butadiene-acrylonitrile rubber（NBR） was prepared with stannous chloride dihydrate（SnCl₂·2 H₂O） as active agent. The effect of SnCl₂·2 H₂O on the vulcanization characteristics of PF-vulcanized NBR was investigated and the vulcanization mechanism was discussed. The kinetic parameters of the vulcanization were calculated by Freeman-Carroll, Kissinger method and Ozawa method respectively. The autocatalytic model of the reaction and the n order reaction model were established, and the kinetic equation of the reaction was obtained.The results showed that the addition of SnCl₂·2 H₂O reduced the activation energy of the reaction, which had a significant promotion effect on the vulcanization process, and kinetic model for PF-vulcanized NBR system was dα/dt=1.7×10¹⁶e^{-133 466}（1-α）^0.95.更多还原