可逆交联聚丁二烯网络的技术进展

Progress on Reversible Crosslinking Network Based-on Polybutadiene

简介了聚丁二烯的种类、优异性能及重要性,简述了聚丁二烯使用过程中硫化交联制备的含有不可逆交联网络带来的难以回收和资源浪费的问题,设计合成基于可逆交联键的聚丁二烯网络对于发展高弹性、高强度、可回收和其它功能的先进材料具有重要意义。构筑可逆交联聚丁二烯的关键是在聚丁二烯分子链上引入官能基团,再通过官能基团之间的反应或相互作用构筑可逆交联聚丁二烯网络。根据官能基团在聚丁二烯分子链的位置不同,介绍了基于链端官能化聚丁二烯的可逆交联网络、基于链中官能化聚丁二烯的可逆交联网络和基于链端和链中双重官能化聚丁二烯的可逆交联网络这3种聚丁二烯网络的制备方法和性能。最后提出,引入更多的可逆交联键以及功能基团,拓宽其应用领域是未来的重点研发方向。

The category,property and importance of polybutadiene were introduced.The crosslinking by sulfur for the using of polybutadiene remains one of the largest and more problematic sources of waste due to irreversible crosslinking.It is of great important for the development of advanced materials with high strength,high elastic,recyclability and other functions by designing and synthesizing polybutadiene network with reversible crosslinking bonds.The key point for the design of reversible crosslinking polybutadiene network lies in the functionalization of polybutadiene with various functional groups.The reversible crosslinking polybutadiene network was synthesized by the reaction or interaction of functional groups.According to the different sites of function groups on the polymer chains of polybutadiene,the synthetic methods and properties of the reversible crosslinking polybutadiene networks(based on polybutadiene with function groups at chain-end or in the chains)were introduced.In the future,the key research and development direction are designing and synthesizing cross-linking polybutadiene network with more reversible crosslinking bonds and functional groups as well as broadening application areas.