三种测量橡胶交联密度的核磁共振方法比较

doi:10.11938/cjmr20172571

波谱学杂志 ›› 2017, Vol. 34 ›› Issue (4): 408-420.doi: 10.11938/cjmr20172571

三种测量橡胶交联密度的核磁共振方法比较

高鹏飞¹, 褚琳琳¹, 杨翼², 江纪锋³, 王嘉琛¹, 姚叶锋¹, 周兵⁴

1. 上海市磁共振重点实验室, 华东师范大学物理与材料科学学院, 上海 200062;
2. 上海纽迈电子科技有限公司, 上海 200062;
3. 双钱集团上海轮胎研究所有限公司, 上海 200237;
4. 同济大学材料科学与工程学院, 上海 201804

收稿日期:2017-04-05 修回日期:2017-10-29 出版日期:2017-12-05 发布日期:2017-11-29
通讯作者: 王嘉琛,Tel:021-62234328,E-mail:jcwang@phy.ecnu.edu.cn;姚叶锋,Tel:021-62234328;E-mail:yfyao@phy.ecnu.edu.cn E-mail:jcwang@phy.ecnu.edu.cn;yfyao@phy.ecnu.edu.cn
基金资助:
国家自然科学基金资助项目（21574043，41572103）；国家重点基础研究发展计划（“973”计划）资助项目（2013CB921801）；上海市科委资助项目（15142200500）；华东师范大学科研创新基金资助项目.

Comparison of Three NMR Methods for Measuring Crosslink Density of Rubbers

GAO Peng-fei¹, CHU Lin-lin¹, YANG Yi², JIANG Ji-feng³, WANG Jia-chen¹, YAO Ye-feng¹, ZHOU Bing⁴

1. Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, Shanghai 200062, China;
2. Shanghai Niumag Electronic Technology Co., Ltd, Shanghai 200062, China;
3. Double Coin Group Shanghai Tire Research Institute Co., Ltd, Shanghai 200237, China;
4. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China

Received:2017-04-05 Revised:2017-10-29 Online:2017-12-05 Published:2017-11-29

摘要/Abstract

摘要： 核磁共振（NMR）技术已经成为测量橡胶交联密度的一种常用技术手段．该文探讨了用于测量橡胶交联密度的三种NMR方法：¹H双量子（DQ）NMR、¹H Hahn回波和¹H CPMG回波，讨论了这些方法测量值差异的来源．在此基础上进一步研究了¹H CPMG回波方法中回波时间对测量值的影响，探讨了改善¹H CPMG回波方法的方案．

关键词: ¹H CPMG回波, ¹H Hahn回波, ¹H DQ NMR, 天然橡胶, 交联密度

Abstract: NMR is a frequently used technique for measuring crosslink density of rubbers. In this work, three commonly used proton NMR methods for measuring crosslink density of rubbers[i.e., ¹H double-quantum (DQ) NMR, ¹H Hahn echo and ¹H CPMG echo] were compared. Different approaches showed different results, and the origin of such discrepancy was discussed. The echo time dependence of the crosslink density measured with the CPMG echo method was studied. The ways to improve theCPMG echo-based measurements are discussed.

Key words: ¹H CPMG echo, ¹H Hahn echo, ¹H double-quantum (DQ) NMR, natural rubber, crosslink density

中图分类号:

O482.53

高鹏飞, 褚琳琳, 杨翼, 江纪锋, 王嘉琛, 姚叶锋, 周兵. 三种测量橡胶交联密度的核磁共振方法比较[J]. 波谱学杂志, 2017, 34(4): 408-420.

GAO Peng-fei, CHU Lin-lin, YANG Yi, JIANG Ji-feng, WANG Jia-chen, YAO Ye-feng, ZHOU Bing. Comparison of Three NMR Methods for Measuring Crosslink Density of Rubbers[J]. Chinese Journal of Magnetic Resonance, 2017, 34(4): 408-420.

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三种测量橡胶交联密度的核磁共振方法比较

Comparison of Three NMR Methods for Measuring Crosslink Density of Rubbers

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