采用红外光谱、核磁共振交联密度仪及差示扫描量热仪等现代仪器分析方法研究环氧化天然橡胶生胶加速贮存老化期间分子结构与性能变化。结果表明：随着贮存时间的增加伴随着氧化降解现象的发生，环氧化天然橡胶的分子不断进行自然交联，交联密度与程度逐渐增大，老化12 h时达到最大，随后出现下降趋势。
The variations of molecular structure and properties of epoxidized natural rubber( ENR) during accel-erated storage were studied by FTIR,NMR and DSC. The results indicated that oxidative degradation was occuried with the prolonging of the storage time,automatic crosslinking between the molecular of epoxidized natural rubber was happened gradually. The crosslinking density and extent also increased gradually. It reached the maximum when the aging time was 12h,and then decreased gradually.
参考文献
| [1] | Bateman L.The Chemistry and Physics Rubber-like Substances[J].Maclaren & sons Ltd,1963(4):13-15. |
| [2] | Sekhar B C.Inhibition of hardening in Natural Rubbe[J].Processing of Natural Rubber Re-search Conference,1960(4):512. |
| [3] | 黎沛森;李小霞;陈成海 等.天然橡胶分子结构的研究[J].热带作物学报,1998,9(1):73. |
| [4] | 李思东;黎沛森;任孟萍 等.天然橡胶加速贮存过程中的凝胶尺寸及力学性能的变异[J].橡胶工业,1992,39(7):421-423. |
| [5] | Li SD.;Peng Z.;Li PS.;Yu HP. .Study on variation of structure and properties of natural rubber during accelerated storage[J].Journal of Applied Polymer Science,1998(9):1779-1783. |
| [6] | 曾宗强,余和平,黄茂芳,王启方,曾霞.长期贮存标准天然橡胶加工性能的研究[J].热带作物学报,2011(09):1754-1759. |
| [7] | 张芸华,缪桂兰,苏艳玲,张艳梅.不同贮存期和熟化时间对标准天然橡胶P0、PRI值的影响[J].热带农业科技,2009(03):6-7. |
| [8] | 佘晓东,廖双泉,林鸿基,李思东,钟杰平.微生物凝固天然橡胶加速贮存期间分子量与Po和PRI的变化研究[J].广东化工,2008(12):12-14,25. |
| [9] | 杨春亮,黎涛,黎志平.环氧化天然橡胶贮存性能的变异[J].弹性体,2001(04):8-11. |
| [10] | 杨春亮,黎涛,黎志平.热处理对环氧化天然橡胶性能的影响[J].橡胶工业,2002(07):400-402. |
| [11] | Janer. D. Marinho;Tanaka Y .Structural Char-acterisation of Wild Rubber:Gel content[J].Journal of Rubber Research,2(4):231-238. |
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