橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2008 Vol.31 No.1 P.50-53

橡胶技术网

用核磁共振法研究促进剂对硫黄硫化天然橡胶结构的影响

赵菲  毕薇娜  张萍  于建  Winfried Kuhn 

摘 要:用核磁共振交联密度仪研究了次磺酰胺类促进剂NS、DZ和CZ对天然橡胶硫化胶结构的影响,考察了相同用量下促进剂种类与天然橡胶硫化胶交联密度的关系.结果表明,在基本配方和硫化条件相同的情况下, 促进剂的相对分子质量越低,天然橡胶硫化胶的交联密度越高.硫化胶的交联密度不仅对核磁共振的横向弛豫时间有影响,而且影响其纵向弛豫时间.随着交联密度的增加,硫化胶的核磁共振弛豫时间缩短,弛豫时间对温度的依赖性减弱.
关键词:核磁共振;弛豫参数;交联密度;硫化;促进剂
分类号:O657.2  文献标识码:B

文章编号:1000-1255(2008)01-0050-04

Influence of accelerators on structure of sulfur-cured natural rubber by nuclear magnetic resonance spectroscopy

Zhao Fei  Bi Weina  Zhang Ping  Yu Jian  Winfried Kuhn 

基金项目:国家自然科学基金资助项目(20674043);国家"973"重点基础研究前期项目(2003 CCA 04000).
作者简介:赵菲(1968-),女,副教授,博士研究生.
作者单位:赵菲(青岛科技大学 橡塑材料与工程教育部重点实验室,山东 青岛 266042;清华大学 化工系,北京 100084) 
     毕薇娜(青岛科技大学 橡塑材料与工程教育部重点实验室,山东 青岛 266042) 
     张萍(青岛科技大学 橡塑材料与工程教育部重点实验室,山东 青岛 266042) 
     于建(清华大学 化工系,北京 100084) 
     Winfried Kuhn(奎恩创新图像有限公司,德国 布里斯卡斯特 D-66440) 

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收稿日期:2007年1月22日

修稿日期:2007年12月11日

出版日期:2008年1月15日