钕系异戊橡胶中试技术的开发  

Pilot Plant Test for Synthesis of Neodymium Isoprene Rubber with Nd Catalyst

作　　者：谭金枚[1] 张杰[1] 李传清[1] 欧阳素芳[1] 杨亮亮[1] 赵青松[1] 

机构地区：[1]中国石化北京北化院燕山分院,北京102500

出　　处：《石油化工》2011年第12期1330-1335,共6页Petrochemical Technology

基　　金：中国石化科技开发项目(410087)

摘　　要：在中试装置上采用均相钕系催化剂催化异戊二烯进行溶液聚合,合成了钕系异戊橡胶(Nd-IR);考察了聚合温度、催化剂用量和异戊二烯质量浓度对聚合反应的影响;利用FTIR和13C NMR方法对Nd-IR的结构进行表征;评价了Nd-IR的硫化特性,并测试了硫化Nd-IR的力学性能、耐磨性能和动态力学性能。实验结果表明,随聚合温度的升高、异戊二烯质量浓度和均相钕系催化剂用量的增加,异戊二烯的转化率均提高。在50℃、异戊二烯质量浓度102 g/L、均相钕系催化剂用量(1 g异戊二烯对应的Nd的物质的量)为1.60×10-6 mol/g的条件下进行聚合时,异戊二烯的转化率为96%,合成的Nd-IR的门尼黏度为75±5、顺-1,4-异戊二烯结构的质量分数大于98%;Nd-IR生胶及混炼胶的硫化速度快,硫化后的Nd-IR的耐磨性能和动态力学性能较好。Neodymium isoprene rubber（Nd-IR） was synthesized from isoprene with homogeneous Nd catalyst through solution polymerization in pilot plant scale.The effects of temperature,isoprene concentration and Nd catalyst dosage on the polymerization were studied.The structure of Nd-IR was characterized by means of FTIR and 13C NMR.The vulcanizing property of Nd-IR was evaluated,and the mechanical properties,the wear resistance and the dynamic mechanical properties of the vulcanized Nd-IR were tested.The results indicated that isoprene conversion increased with the increases of temperature,isoprene concentration and Nd catalyst dosage.Under the polymerization conditions of 102 g/L isoprene,1.60×10-6 mol/g catalyst dosage（amount of substance of Nd in 1 g isoprene） and 50 ℃,isoprene conversion could reach 96%,the Mooney viscosity of the produced Nd-IR was 75±5,and the mass fraction of cis-1,4-isoprene unit in Nd-IR was more than 98%.The vulcanizing rates of the raw Nd-IR and the compounded Nd-IR were high,and the vulcanized Nd-IR had good wear resistance and dynamic mechanical properties.

关 键 词：异戊二烯 钕系催化剂 异戊橡胶 硫化 

分 类 号：TQ333.3[化学工程—橡胶工业]