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中文摘要：
引言 丁基橡胶作为合成橡胶中的主要品种之一，是由异丁烯和少量异戊二烯通过阳离子聚合得到的无规共聚物，它具有优良的气密性、耐热性、抗老化性、抗腐蚀性和电绝缘性等特点，被广泛应用于轮胎内胎、医用瓶塞、硫化胶囊、减震材料、电绝缘材料以及密封材料等诸多领域。世界丁基橡胶的需求量逐年递增，2005年为86．5万吨，预计到2009年将达到91．8万吨。
英文摘要：
A novel rotating packed bed （RPB） technology was used to prepare butyl rubber for the first time. The effects of the operating parameters, such as rotate speed, polymerization temperature, on the molecular weight and molecular weight distribution of isobutylene-isoprene rubber （IIR） were investigated in the experiment. The results revealed that IIR prepared by the unique high gravity reaction technology with the molecular weight of 2.89 × 10^5, molecular weight distribution index of 1.99 and single-pass conversion 30% was obtained at N= 1200 r · min^-1 Tp =- 100℃ in the experimental condition. In addition, the mean residence time of the products was less than ls while that of the conventional technology was 30-60 min. The production efficiency per unit volume of the equipment was increased by 2-3 orders of magnitude. With increasing N and decreasing Tp, the molecular weight of IIR increased whereas no obvious difference of the distribution index of molecular weight was observed.
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