钛系催化剂合成聚异戊二烯橡胶的研究进展

Development of titanium catalyst for cis-1,4-polyisoprene rubber

利用钛系催化剂合成的异戊橡胶具有与天然橡胶媲美的性能。本文介绍了聚异戊二烯的不同结构和国内外异戊橡胶的生产状况,综述了钛系催化剂的制备方法、聚异戊二烯的聚合动力学及其对微观结构中顺式含量的主要影响因素,并对钛系异戊橡胶的研究与发展前景进行了展望,发现开发廉价的钛系催化剂是合成异戊橡胶的必然趋势,发展钛系高顺式聚异戊二烯应是合成高顺式聚异戊二烯工业的首选,同时还提出了合成顺式聚异戊二烯的研究中存在及有待改进的一些问题。

The performance of isoprene rubber synthesized by the titanium catalyst is comparable to that of natural rubber. The paper is aimed to introduce the domestic and abroad developments of cis-1,4-polyisoprene rubber,and to summarize the influence factors of kinetic behavior for the polyisoprene polymerization and the content of cis-1,4-polyisoprene configuration in the microstructure of rubber synthesized by titanium catalyst. An overview on the synthesis methods of cis-1,4-polyisoprene by titanium catalyst is conducted , and the developing trend for titanium cis-1,4-polyisoprene rubber is prospected. It can be concluded that developing a cheap titanium catalysis system is an inevitable trend in the synthesis of isoprene rubber,developing titanium high cis-1,4-polyisoprene should be the prime choice for polyisoprene synthesis industry. Some existent problems and possible research subjects for the further improvement of synthesis cis-1,4-polyisoprene are suggested and discussed.