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Fluidization bed reactor is an attractive method to synthesize and process quantities of functional nanoparticles, due to the large gas–solid contact area and its potential scalability. Nanoparticles fluidize not individually but as a form of porous agglomerates with a typical porosity above 90%. The porous structure has a significant effect on the hydrodynamic behavior of a single nanoparticle agglomerate, but its influence on the flow behavior of nanoparticle agglomerates in a fluidized bed is currently unclear. In the present study, a drag model was developed to consider the porous structure effects of nanoparticle agglomerates by incorporating porous-structure-based drag laws in the Eulerian–Eulerian two-fluid model. Numerical simulations were performed from particulate to bubbling fluidization state to evaluate the applicability of porous-structure-based drag laws. Results obtained for the minimum fluidization and bubbling velocities, bed expansion ratio, and agglomerate dispersion coefficient show that, compared with the drag law of solid sphere, the porous-structure-based drag laws, especially the drag law of fractal porous spheres, provide a closer fit to the experimental data. This indicates that the pore structures have a great impact on gas–solid flow behavior of nanoparticle agglomerates, and the porous-structure-based drag laws are more suitable for describing flows in nanoparticle agglomerate fluidized beds. [ABSTRACT FROM AUTHOR]

The application of polymer materials in sculpture art creation is extensive and plays a significant role in the development of sculpture art. This article aims to systematically explore the application of polymer materials in contemporary sculpture art creation. The research comprehensively applies various techniques such as literature research, data comparison, and case analysis to explore in detail the ways, methods, and paths of polymer materials employed in the shaping, decoration, and protection of sculptural artworks. First, the article analyzes three methods of shaping sculpture artworks with polymer materials (casting, printing, and constructing). Secondly, it explores two techniques of using polymer materials to adorn sculpture artworks (coloring and imitating texture); then it discusses the significant approach of using polymer materials to protect sculptural artworks (protective spray film). Finally, the research identifies the merits and demerits of using polymer materials in contemporary sculpture art creation. The findings of this study are expected to enrich the effective application of polymer materials in contemporary sculpture art creation and offer novel techniques and ideas for contemporary sculpture art creators. [ABSTRACT FROM AUTHOR]

Ceramicized polymer composites are prepared by adding various additives into the polymer matrix, such as functional clay fillers, porcelain-forming additives, crosslinking agents, flame retardants, reinforcement agents, etc. In recent years, polymer materials have been widely used in the preparation of ceramic materials. Moreover, the addition of polymer materials in ceramic materials results in increased bending in the ceramic body, and its mechanical strength has been greatly improved; this advantage has led many contemporary ceramists to use polymer materials in the creation of ceramic works, providing ceramic creation more space for operation. The introduction of polymer materials into ceramic materials brings more possibilities than traditional ceramic creation based on the tests of toughness, strength, and yield of the ceramic body. This article investigates ceramic raw materials with high-polymer material ceramic function, high-polymer materials for modern pottery to convey the artistic expression of porcelain texture, as well as the use of high-polymer materials in gel-powered three-dimensional (3D) printing to refine the injection molding process, all of which solve the difficulties of creating delicate artworks in modern ceramic art creation. This paper mainly adopts the research method of recording and comparing the numerical value of adding ceramic materials into polymer materials and the physical shape after firing in ceramic creation, to form a relatively stable numerical value and firing curve for a certain type of ceramic creation form. In this regard, the integration of modern ceramic creation and polymer materials makes ceramic works a relatively special style in contemporary art, increasing its cultural connotation and visual tension. [ABSTRACT FROM AUTHOR]