Antiaging effect of vitamin C-rare earth complex on natural rubber/carbon black composites

作者：Luo, Yuan-Fang; Yang, Chao; Jia, Zhi-Xin^*; Jia, De-Min; Chen, Jun; Zheng, De

来源：Journal of South China University of Technology(Natural Science Edition), 2012, 40(10): 128-133.

DOI：10.3969/j.issn.1000-565X.2012.10.018

• Anti-aging properties
• Curing characteristics
• Rare earth complex
• Rubber antioxidant
• Thermo-oxidative aging
• Thermo-oxidative aging resistances
• Ultraviolet aging
• Vitamin C

A novel rare earth complex was prepared from lanthanum (La) and vitamin C and was used as a new type of antioxidant in natural rubber/carbon black (NR/CB) composites. Then, the effects of the vitamin C-rare earth complex on the curing characteristics of NR/CB compounds and the mechanical properties of NR/CB vulcanizates were investigated. Moreover, by means of FT-IR and according to the retention of mechanical properties and the variation of surface morphology, the effects of the rare earth complex on the antiaging properties of the NR/CB vulcanizates were also analyzed in detail and were compared with those of the commonly-used rubber antioxidants 4010NA, RD and MB. The results show that (1) the rare earth complex can accelerate the vulcanization of the NR/CB compounds to a certain degree and improve the mechanical properties of the NR/CB vulcanizates;(2) the rare earth complex has a good antiaging effect on the NR/CB vulcanizates;(3) the thermo-oxidative aging resistance and UV aging resistance of the rare earth complex are close to those of 4010NA and RD and are superior to those of MB;and (4) the ozone aging resistance of the rare earth complex is particularly strong for the NR/CB vulcanizates, which is superior to those of RD and MB as well as to those of 4010NA with an excellent ozone aging resistance.

• 出版日期2012-10
• 单位华南理工大学