摘要
将自制的维生素C镧配合物(VCLa)作为新型防老剂用于天然橡胶(NR)中,考察VCLa对胶料性能的影响。结果表明:VCLa对NR具有一定的硫化促进作用,显著缩短胶料的t90,略微提高硫化胶拉伸性能;VCLa对NR具有优良的防护作用,其防臭氧老化效果显著优于常用防老剂4010NA,RD和MB,防热氧老化效果与防老剂4010NA和RD相当,优于防老剂MB,防紫外光老化效果接近于防老剂4010NA和RD,但优于防老剂MB;VCLa减缓NR应力老化,提高硫化胶的耐磨性和耐屈挠疲劳性能。
The lanthanide complexes of vitamin C （ VCLa ） were prepared and applied in NR as a new antioxidant. The effect of VCLa on the properties of NR compound was investigated. The results showed that, with addition of VCLa, the NR vulcanization was accelerated, tg0 was significantly shortened, and the tensile properties of the NR vulcanizates were slightly improved. Compared with commonly used antioxidant 4010NA, RD and MB, VCLa was more effective against ozone. In thermal oxidative aging and UV aging tests, VCLa showed similar effects as 4010NA and RD and was better than MB. In addition, VCLa could also slow down the stress aging process of NR compounds, improve the abrasion resistance and flex fatigue resistance of the NR vulcanizates.
出处
《橡胶科技》
2013年第7期19-26,共8页
Rubber Science and Technology
