体积拉伸流变塑化输运技术助力材料创新发展

 讨论了体积拉伸流变支配的偏心转子塑化输运装置的结构原理和技术特点，探讨了该技术在通用材料加工过程自增强和特种材料高效加工上的应用优势。研究结果表明：与传统螺杆塑化输运技术相比，偏心转子体积拉伸流变塑化输运技术在多组分塑料共混增容改性、有机无机杂化功能改性和热塑性塑料纤维增强改性等方面，具有强制增容效果好、混合分散效果优、纤维折损断裂少等显著优势；此外，偏心转子塑化输运装置的体积压缩释放效应强化了极端流变行为材料熔融塑化过程的传质传热效果，大大缩短物料热机械历程，实现极端流变行为材料的高速成型加工。

Advanced processing technology of polymer materials helps material innovation and development

To meet the R/D needs of polymer industry and industrialization of new polymer materials, an elongation rheologybased polymer deformation processing method for polymer material processing and molding is presented, which realizes the transformation of the principle and method of polymer material processing and molding from ‘shear deformation’ to ‘elongational deformation’. The structural principle and technical characteristics of the eccentric rotor plasticized transport device controlled by volume elongational rheology are elaborated, and the application advantages of this technology in self-reinforcement of general material processing and efficient processing of special materials are discussed. It is shown that the eccentric rotor plasticization transportation technology has obvious advantages such as good compatibilizing effect, excellent mixing and dispersion effect, less fiber breakage and fracture in multi-component plastic blending compatibilization modification, organicinorganic hybrid function modification and thermoplastic fiber reinforced modification, etc. as compared to traditional screw plasticization transportation technology. In addition, the volumetric compression and release effect of the eccentric rotor plasticizing and transporting device can strengthen the mass and heat transfer effect of melting and plasticizing process, greatly shorten the material thermomechanical process, and realize high-speed molding processing of extreme rheological behavior material.