本文研究了草酸亚锡体系中几种单一稳定剂和复合稳定剂对 PET 副反应的抑制。采用磷酸、磷酸酯类或亚磷酸,亚磷酸酯类作为稳定剂,均能提高 PET 的热稳定性,改善树脂的质量指标;与酚类抗氧剂一起作为复合稳定剂,效果更佳。较好的草酸亚...本文研究了草酸亚锡体系中几种单一稳定剂和复合稳定剂对 PET 副反应的抑制。采用磷酸、磷酸酯类或亚磷酸,亚磷酸酯类作为稳定剂,均能提高 PET 的热稳定性,改善树脂的质量指标;与酚类抗氧剂一起作为复合稳定剂,效果更佳。较好的草酸亚锡体系与实用的三氧化二锑体系的比较,表明在实际生产中草酸亚锡作为缩聚催化剂是很有前途的。展开更多
Precursor(SnC2O4)was prepared by ball-milling solid chemical reaction between oxalic acid and stannous chloride at ambient temperature,and SnO2 was obtained by thermal decomposition of the precursor.The x-ray diffract...Precursor(SnC2O4)was prepared by ball-milling solid chemical reaction between oxalic acid and stannous chloride at ambient temperature,and SnO2 was obtained by thermal decomposition of the precursor.The x-ray diffraction was used to analyze the phase of the precursor and decomposition products,TG-DTA was used to analyze the change of the precursor in the process of pyrogenation,and SEM was used to analyze the shape of the decomposition products.Then the mechanism of ball-milling solid reaction between oxalic acid and stannous chloride was discussed,and the effect of temperature on the decomposing process was studied.The results show that the decomposition products vary in component and size according to different decomposition temperature.Spherical nano-SnO2 about 100nm is obtained by decomposition of the precursor at 600℃.展开更多
文摘本文研究了草酸亚锡体系中几种单一稳定剂和复合稳定剂对 PET 副反应的抑制。采用磷酸、磷酸酯类或亚磷酸,亚磷酸酯类作为稳定剂,均能提高 PET 的热稳定性,改善树脂的质量指标;与酚类抗氧剂一起作为复合稳定剂,效果更佳。较好的草酸亚锡体系与实用的三氧化二锑体系的比较,表明在实际生产中草酸亚锡作为缩聚催化剂是很有前途的。
文摘Precursor(SnC2O4)was prepared by ball-milling solid chemical reaction between oxalic acid and stannous chloride at ambient temperature,and SnO2 was obtained by thermal decomposition of the precursor.The x-ray diffraction was used to analyze the phase of the precursor and decomposition products,TG-DTA was used to analyze the change of the precursor in the process of pyrogenation,and SEM was used to analyze the shape of the decomposition products.Then the mechanism of ball-milling solid reaction between oxalic acid and stannous chloride was discussed,and the effect of temperature on the decomposing process was studied.The results show that the decomposition products vary in component and size according to different decomposition temperature.Spherical nano-SnO2 about 100nm is obtained by decomposition of the precursor at 600℃.
