共混用动态混合器的研究与应用进展
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摘要
动态混合器具有提高聚合物共混过程中分散相混合质量的优点。本文从混合理论出发,重点介绍了分散和分布混合理论的研究进展。对共混用动态混合器进行了分类与整理,简述了釜式搅拌器与螺杆挤出机类动态混合器,并详细介绍了销钉式、球窝式和空穴传递式动态混合器的原理与结构。从实验和数值模拟两个方面阐述了动态混合器的研究方法,实验研究主要包括计算机图像处理技术与显微分析技术、力学性能分析技术和粒子图像测速技术,数值模拟研究方法方面则从宏观和介观两种尺度进行了简要的介绍。最后介绍了共混用动态混合器在化纤、塑料、橡胶等多个工业领域的应用,指出实验与数值模拟相结合的方法有助于提高现有研究水平,解决动态混合器设计与优化过程中的难题。
Dynamic mixers for polymer blending have the advantage of improving the mixing quality of the dispersed phase in the polymer. In this paper, the research progress of mixing theory which focused on dispersion mixing and distribution mixing was introduced. Dynamic mixers for polymer blending were divided into kettle mixer and screw extruder,and the structures of spherical cavity type,pin type and cavity transfer type dynamic mixers were introduced in detail. The research methods of the dynamic mixer were expounded from experimental methods and numerical simulation methods.Experimental methods were described from microscopic analysis technology with computer image processing technology, mechanical performance analysis technology and particle image velocimetry technology. On the other hand, the numerical simulation methods were expounded from the macroscopic and mesoscopic scales. The application of dynamic mixer in chemical industry, plastic industry and rubber industry was introduced. This paper pointed out that the combination of experiment methods and numerical simulation methods could improve the existing research level and solve the problems in the process of design and optimization.
Dynamic mixers for polymer blending have the advantage of improving the mixing quality of the dispersed phase in the polymer. In this paper, the research progress of mixing theory which focused on dispersion mixing and distribution mixing was introduced. Dynamic mixers for polymer blending were divided into kettle mixer and screw extruder,and the structures of spherical cavity type,pin type and cavity transfer type dynamic mixers were introduced in detail. The research methods of the dynamic mixer were expounded from experimental methods and numerical simulation methods.Experimental methods were described from microscopic analysis technology with computer image processing technology, mechanical performance analysis technology and particle image velocimetry technology. On the other hand, the numerical simulation methods were expounded from the macroscopic and mesoscopic scales. The application of dynamic mixer in chemical industry, plastic industry and rubber industry was introduced. This paper pointed out that the combination of experiment methods and numerical simulation methods could improve the existing research level and solve the problems in the process of design and optimization.
引文
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