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Silicon Carbide Cylinder Manufacturer: Research Progress on Silicon Carbide Precursors
Release time:
2021-12-14
Silicon carbide cylinder Manufacturer: Research Progress on Silicon Carbide Precursors
Silicon Carbide Cylinder Manufacturers: Silicon carbide ceramics boast exceptional comprehensive properties, including high-temperature resistance, corrosion resistance, wear resistance, radiation resistance, high strength, high hardness, and low thermal expansion, making them play a vital role in the field of energy security. Currently, the forming of ceramic materials—including SiC ceramics—is predominantly carried out using traditional powder-based methods, which involve processes ranging from the preparation of fine powders to shaping (including rolling, extrusion, dry pressing, isostatic pressing, casting, injection molding, etc.) followed by sintering and post-processing. Over the past 30 years, numerous new technologies for ceramic powder forming have emerged, bringing breakthroughs in various aspects. Nevertheless, this conventional approach still has certain limitations that remain difficult to overcome, such as the challenge of achieving uniform chemical composition, poor machinability, difficulty in fabricating complex components, and the inherent brittleness of ceramic materials, which remains unresolved. These shortcomings in the processing and forming of ceramic materials have hindered the expansion of their application fields. Therefore, while optimizing traditional ceramic forming processes, research into novel ceramic forming techniques has become one of the key research directions in the field of ceramic materials.
Silicon carbide cylinder Manufacturer: Precursor-derived ceramics are ceramic materials obtained by pyrolyzing and transforming organic compounds containing elements such as silicon, boron, carbon, nitrogen, and oxygen. These ceramics offer several advantages, including ease of processing and shaping, low ceramicization temperature, uniform ceramic composition, the ability to incorporate reinforcing phases, and precise control over the precursor’s chemical composition and microstructure through molecular design and optimization of ceramic composition, structure, and properties. This represents a revolutionary technology for the preparation of high-performance ceramic materials. The precursor-to-ceramic transformation process poses significant challenges in terms of molecular structural design of precursors, control of elemental composition, physicochemical behavior during ceramic transformation, crystalline forms and phase transitions in covalent-bond ceramics, and so forth. Following careful planning and feasibility studies, the Advanced Energy Materials Engineering Laboratory at the Institute of Materials Technology and Engineering, Ningbo, Chinese Academy of Sciences, has identified “High-Performance Precursor Molecular Structure Design and Ceramic Transformation” as one of its key disciplinary development directions. With Class-A support under the “3315 Plan” from both the Chinese Academy of Sciences and Ningbo, the laboratory is focusing on addressing critical issues such as customized precursor development, efficient precursor modification, and engineering-scale implementation. In 2019, the laboratory achieved the following milestone progress.
Silicon Carbide Cylinder Manufacturers: By customizing silicon carbide ceramic precursors, we have conducted in-depth research in the laboratory on the structural design and synthesis techniques for both solid polysiloxane and liquid polysiloxane. The synthesized liquid polysiloxane ceramics exhibit high yield (with a ceramic yield of up to 78% at 1000°C), long storage stability (over 6 months), low oxygen content (~0.1 wt.%), and excellent flowability (viscosity around ~0.01 Pa·s). Combined with a crosslinking process, this structural design enables the liquid polysiloxane to undergo rapid crosslinking and curing within seconds or minutes. The solid polysiloxane features low branching degree and good spinnability, making it well-suited for fiber formation. Chemistry, 2019;33(2): e4720; Ceram. Int., 2019, 45(13):16380–16386; J. Am. Ceram. Soc., 2019, 102(3):1041–1048; Applications: CN201910430199.4, CN201911016657.6, CN201911016637.9). By combining customized precursor structures with excellent melt-processability and solubility, our laboratory has achieved highly efficient transformations of SiC precursors into hollow SiC fibers, low-thermal-conductivity porous SiC foams, complex 3D-printed SiC components, electrospun SiC fibers, and high-strength composite materials. This transformation shifts SiC ceramics from being “single-application-oriented” to “comprehensive-service-oriented,” maximizing value, diversifying functionality, and differentiating products, thereby driving advancements in related fields (Ceram. Int., 2019, 45(18):24007–24013; J. Eur. Ceram. Soc., 2019, 39(6):2028–2035; Appl. Ceram., 2019, 10.1080/17436753.2019.1707413; Patent: CN201910090356.1).
Silicon Carbide Cylinder Manufacturer: Recently, building on previous laboratory experiments, the Advanced Energy Engineering Laboratory independently designed and successfully established two pilot-scale platforms—one for solid polysiloxane and the other for liquid polysiloxane—laying a solid foundation for subsequent engineering and application research. Among these, the pilot-scale platform for liquid precursors has successfully synthesized kilogram-scale polysiloxane target products through operational commissioning.
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