| 使用核磁共振交联密度仪测试不同方法凝固天然橡胶的交联密度和性能的关系 |
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| 引用本文： | 陈晓光,许逵.使用核磁共振交联密度仪测试不同方法凝固天然橡胶的交联密度和性能的关系[J].广东化工,2010,37(10):123-124,126. |
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| 作者姓名： | 陈晓光 许逵 |
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| 作者单位： | 中国热带农业科学院农产品加工研究所,广东湛江524001; |
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| 摘 要： | 用核磁共振(NMR)法测定不同方法凝固天然橡胶的交联密度,研究其与性能之间的关系。结果表明,硫化胶的交联密度不仅影响其核磁共振的横向弛豫时间(T1),而且影响其纵向弛豫时间(T2)。随着交联密度大,硫化胶的核磁共振弛豫时间缩短。另外,微生物凝固天然橡胶硫化胶的交联密度、正硫化时刻扭矩和拉伸强度均大于酸凝固天然橡胶硫化胶的。
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| 关 键 词： | 核磁共振法 交联密度 凝固 天然橡胶 |
Study on Relationship between Crosslinking Density and Properties of Different Methods Coagulated Natural Rubber by Nuclear Magnetic Resonance Spectroscopy |
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| Chen Xiaoguang,Xu Kui.Study on Relationship between Crosslinking Density and Properties of Different Methods Coagulated Natural Rubber by Nuclear Magnetic Resonance Spectroscopy[J].Guangdong Chemical Industry,2010,37(10):123-124,126. |
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| Authors: | Chen Xiaoguang Xu Kui |
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| Affiliation: | (Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agriculture Science, Zhanjiang 524001, China) |
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| Abstract: | The relationship between crosslinking density and properties of natural rubber （NR） coagulated by different methods was studied by nuclear magnetic resonance spectroscopy. The results showed that Crosslinking density influenced both lognitudinal relaxationtime （T1） and transversal relaxation time （T2） of the vulcanizates. TI and T2 decrease with the increased of crosslinking density of NR. Moreover, the crosslinking density, torque at the time of T90 and mechanical properties of NR coagulated by microbial coagulation method was higher than that of NR coagulated by acid coagulation method. |
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| Keywords: | nuclear magnetic resonance spectroscopy crosslinking density coagulate natural rubber |
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