研究论文

三种测量橡胶交联密度的核磁共振方法比较

  • 高鹏飞 ,
  • 褚琳琳 ,
  • 杨翼 ,
  • 江纪锋 ,
  • 王嘉琛 ,
  • 姚叶锋 ,
  • 周兵
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  • 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

  网络出版日期: 2017-11-29

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-fei ,
  • CHU Lin-lin ,
  • YANG Yi ,
  • JIANG Ji-feng ,
  • WANG Jia-chen ,
  • YAO Ye-feng ,
  • ZHOU Bing
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  • 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 date: 2017-04-05

  Revised date: 2017-10-29

  Online published: 2017-11-29

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.

本文引用格式

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 . DOI: 10.11938/cjmr20172571

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.

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