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稀土配合物促进橡胶硫化的特性研究
Study on the characteristics of rare earth complex as rubber vulcanization accelerator
【摘要】 以促进剂CZ为配体合成N-环己基-2-苯并噻唑次磺酰胺钕配合物,并对其在NR/SBR并用胶中的应用性能进行研究。通过元素分析和红外光谱分析确定稀土配合物的组成为Nd(CZ)Cl3.Nd(OH)Cl2.H2O。稀土配合物具有次磺酰胺类促进剂的延迟性能,适用于橡胶厚制品的硫化;热空气老化后硫化胶的硬度、300%定伸应力和撕裂强度增大,拉伸强度、拉断伸长率和拉断永久变形减小;可降低胎面胶的滚动阻力和生热。
【Abstract】 The N-cyclohexyl-2-benzothiazole sulfenamide neodymium complex was synthesized with accelerator CZ as ligand,and its application in NR/SBR blend was investigated.It was confirmed by element analysis and infra-red spectroscopy analysis that,the composition of the rare earth complex was Nd(CZ)Cl3·Nd(OH)Cl2·H2O.The rare earth complex had a delay characteristic of sulfonamide accelerators and was suitable for vulcanization of thick-walled rubber goods;after heat aging,the Shore A hardness,the modulus at 300% elongation and tear strength of vulcanizate were increased,the tensile strength,elongation at break and tensile set at break of vulcanizate were decreased;the rolling resistance and the heat build-up of tread compound with the rare earth complex could be decreased.
【Key words】 NR; SBR; rare earth complex; accelerator; curing characteristics; dynamic mechanical property;
- 【文献出处】 橡胶工业 ,China Rubber Industry , 编辑部邮箱 ,2009年07期
- 【分类号】TQ330.385
- 【被引频次】15
- 【下载频次】275