环状对苯二甲酸丁二酯低聚物CBT的研究进展

Progress in Cyclic Butylene Terephthalate Oligomers

环状对苯二甲酸丁二酯低聚物CBT作为目前唯一工业化的芳香基环状低聚物,以其超低熔体黏度、边聚合边结晶特性、开环聚合无反应热、无小分子副产物释放等优点受到工业界和学术界的共同关注,尤其是在连续纤维增强复合材料领域得到了广泛应用。本文从CBT的制备方法与聚合机理入手,系统梳理了CBT聚合过程的流变行为、聚合与结晶的关系、结晶形貌、复合材料的制备及应用、基体树脂的脆性机理、纯树脂及复合材料体系增韧方法、边聚合边结晶过程等方面的研究进展,并就存在的问题进行了展望,对CBT及其它芳香基环状低聚酯研究及应用具有指导意义。

As the only industrialized aromatic cyclic oligomer, cyclic butylene terephthalate （CBT） has been attracted wide attention in industry and academia, especially in thermoplastic composites field. This review focus on the methods of CBT preparation, polymerization mechanism, the rheological properties, the relationship between polymerization and crystallization, crystalline morphology, fabrication and application of composites, brittleness mechanism of matrix, toughening methods of pure resin and composites systems and other aspects of crystallization during polymerization. It provides an instructive guide for the future investigation and application about CBT and other cyclic aromatic oligomers.