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Advancements and Prospects of Waterborne Coatings in the Coating Industry: A Comprehensive Analysis
Zhaoxian Che,Yuhan He,Jiarong Shi,Jie Zheng HONG KONG ACADEMY OF SOCIAL SCIENCES 2024 Journal of Social Science Development Research Vol.1 No.2
This paper presents an overview of resins used in coatings, categorizing them into commonly used cross-linking agents such as methyl etherified melamine formaldehyde resin, and matrix resins including acrylic resin, polyurethane, epoxy resin, and alkyd resin. It further examines the demand and market size trends of these matrix resins in China over the recent seven years (2016-2022). The analysis reveals that in terms of both demand and market size, polyurethane resin ranks highest, followed by alkyd resin, acrylic resin, and epoxy resin. Additionally, the paper provides a comprehensive analysis of the development status, advantages, and macro-environment of the waterborne coatings industry. The competitive landscape within the industry is 신so discussed. The application of water-based coatings has shown significant potential to reduce the emission of pollutants such as volatile organic compounds (VOCs). Moreover, water-based coatings exhibit excellent performance characteristics. Market data from 2011 to the present indicates a consistent growth trend in the market size of waterborne coatings. However, intense competition among coating enterprises has led to a high level of product homogenization. In response to increasingly stringent national environmental protection policies, companies are accelerating the development and adoption of water-based coatings and other environmentally friendly products. This strategic shift towards waterborne coatings is expected to drive significant advancements and growth in the industry.
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Xiaoqiang Yu,Lei He,Yuting Hu,Jiajie Li,Xiao Liu,Yuhan Wang,Chunji Li,Munan Yang,Zhenchen Zhong 한국자기학회 2022 Journal of Magnetics Vol.27 No.2
Cerium-containing (Ce) rare earth magnets with extraordinary cost-effectiveness are widely investigated around the world. However, when the concentration of Ce is much more, the kind of these magnets exhibits very poor thermal stability and overall magnetic properties. To weaken these disadvantages, we take eutectic Y50Ce50 co-substitution alloys into account in this work. Magnetic properties, microstructures and metallurgical behaviors of (Y, Ce, Nd)-Fe-B magnets are systematically researched. For (Y50Ce50)10Nd20Fe68.9B1.1 SPSed permanent magnets, good overall magnetic properties are Hcj = 725 kA/m, Jr = 0.73 T and (BH)max = 81 kJ/m³. It schematically depicts that coarse grain zones and fine grain zones occur during the spark plasma sintering (SPS) process. With the Nd content increasing, the deleterious CeFe₂ phases disappear. In addition, the volume fraction and width of coarse grain zones decrease. Ce-rich and Ce-lean regions are also observed in main phases, while Y and Nd elements are uniformly distributed. TEM results show that Nd and Ce are rich in the grain boundary and Y elements prefer to enter in 2:14:1 main phases. This work is favorable to a balanced utilization of high abundance rare earth elements in Nd-Fe-B magnets.
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Li Gongjian,Wang Qin,Liu Hao,Yang Zuojun,Wu Yuhan,He Li,Deng Xiaoyuan 한국조직공학과 재생의학회 2024 조직공학과 재생의학 Vol.21 No.3
Background: Insufficient angiogenesis and the lack of skin appendages are critical challenges in cutaneous wound healing. Stem cell-fabricated cell sheets have become a promising strategy, but cell sheets constructed by a single cell type are inadequate to provide a comprehensive proregenerative microenvironment for wound tissue. Methods: Based on the communication between cells, in this study, bone marrow mesenchymal stem cells (BMSCs) and hair follicle stem cells (HFSCs) were cocultured to fabricate a composite cell sheet (H/M–CS) for the treatment of full-thickness skin wounds in mice. Results: Experiments confirmed that there is cell–cell communication between BMSCs and HFSCs, which enhances the cell proliferation and migration abilities of both cell types. Cell–cell talk also upregulates the gene expression of pro-angiogenic-related cytokines in BMSCs and pro-hair follicle-related cytokines in HFSCs, as well as causing changes in the properties of secreted extracellular matrix components. Conclusions: Therefore, the composite cell sheet is more conducive for cutaneous wound healing and promoting the regeneration of blood vessels and hair follicles. Background: Insufficient angiogenesis and the lack of skin appendages are critical challenges in cutaneous wound healing. Stem cell-fabricated cell sheets have become a promising strategy, but cell sheets constructed by a single cell type are inadequate to provide a comprehensive proregenerative microenvironment for wound tissue. Methods: Based on the communication between cells, in this study, bone marrow mesenchymal stem cells (BMSCs) and hair follicle stem cells (HFSCs) were cocultured to fabricate a composite cell sheet (H/M–CS) for the treatment of full-thickness skin wounds in mice. Results: Experiments confirmed that there is cell–cell communication between BMSCs and HFSCs, which enhances the cell proliferation and migration abilities of both cell types. Cell–cell talk also upregulates the gene expression of pro-angiogenic-related cytokines in BMSCs and pro-hair follicle-related cytokines in HFSCs, as well as causing changes in the properties of secreted extracellular matrix components. Conclusions: Therefore, the composite cell sheet is more conducive for cutaneous wound healing and promoting the regeneration of blood vessels and hair follicles.
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