华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (10): 128-133.doi: 1000-565X(2012)10-0128-06

• 校庆专辑 • 上一篇    下一篇

维生素C-稀土配合物在天然橡胶/炭黑复合材料中的防老化作用

罗远芳1 杨超1 贾志欣1† 贾德民1 陈俊2 郑德2   

  1. 1.华南理工大学 材料科学与工程学院,广东 广州 510640; 2.广东炜林纳功能材料有限公司,广东 佛山 528521
  • 收稿日期:2012-07-10 出版日期:2012-10-25 发布日期:2012-09-01
  • 通信作者: 贾志欣(1980-) ,男,博士,副研究员,主要从事高分子改性与复合材料研究. E-mail: zxjia@scut.edu.cn E-mail:psyfluo@ scut.edu.cn
  • 作者简介:罗远芳(1954-) ,女,教授,博士生导师,主要从事高分子改性与复合材料研究.
  • 基金资助:

    国家"863”计划项目( 2010AA03A406) ; 国家自然科学基金青年基金资助项目( 51003031) ; 国家"973”计划前期研究专项资助( 2010CB635109)

Antiaging Effect of Vitamin C-Rare Earth Complex on Natural Rubber /Carbon Black Composites

Luo Yuan-fangYang ChaoJia Zhi-xinJia De-minChen JunZheng De2   

  1. 1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. Guangdong Winner Functional Materials Co.,Ltd.,Foshan 528521,Guangdong,China
  • Received:2012-07-10 Online:2012-10-25 Published:2012-09-01
  • Contact: 贾志欣(1980-) ,男,博士,副研究员,主要从事高分子改性与复合材料研究. E-mail: zxjia@scut.edu.cn E-mail:psyfluo@ scut.edu.cn
  • About author:罗远芳(1954-) ,女,教授,博士生导师,主要从事高分子改性与复合材料研究.
  • Supported by:

    国家"863”计划项目( 2010AA03A406) ; 国家自然科学基金青年基金资助项目( 51003031) ; 国家"973”计划前期研究专项资助( 2010CB635109)

摘要: 以镧和维生素C 为原料制备了一种新型稀土配合物,将该新型稀土配合物作为一种新型防老剂应用于天然橡胶/炭黑( NR/CB) 复合材料中,研究了该稀土配合物对NR/CB 混炼胶硫化特性和硫化胶力学性能的影响,通过红外光谱、力学性能保持率及表面形貌变化详细分析了该稀土配合物对NR/CB 硫化胶耐老化性能的影响,并与常用橡胶防老剂4010NA、RD 和MB 进行了比较.结果表明: 维生素C-稀土配合物对NR/CB 混炼胶具有一定的硫化促进作用,并能提高NR/CB 硫化胶的力学性能; 维生素C-稀土配合物在NR/CB 复合材料中有优良的抗老化作用,其抗热氧老化和抗紫外光老化效果与4010NA、RD 相近,优于MB,其抗臭氧老化性能尤为突出,显著优于RD、MB 和具有突出抗臭氧性能的4010NA.

关键词: 维生素C, 稀土配合物, 天然橡胶, 炭黑, 复合材料, 热氧老化, 紫外光老化, 臭氧老化

Abstract:

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.

Key words: vitamin C, rare earth complex, natural rubber, carbon black, composites, thermo-oxidative aging, ultraviolet aging, ozone aging