The growing demand of organizations for alternative technologies to reduce environmental damage and meet new legislative issues brought greater focus to the activities of product recovery. One way to recover and reval...The growing demand of organizations for alternative technologies to reduce environmental damage and meet new legislative issues brought greater focus to the activities of product recovery. One way to recover and revalue a product is by remanufacturing, which is defined as the process of recovering a product to its original specifications, promoting the reuse of materials and improving its quality and functionality. However, the context of the remanufacturing industry faces difficulties and is considered unstable and inefficient if compared to manufacturing. In this sense, this paper aims to propose a cell layout based on lean concepts and adapted to the context of remanufacturing, aiming to minimize waste, reduce variability and thereby increase efficiency. The cell layout proposal was based on a literature review and researchers＇ practical experience in the area. This layout can provide the flexibility to handle the variations inherent in the context of remanufacturing, boosting product recovery and related environmental issues.展开更多
We introduce a low-cost and effective technique that can transform waste cement-based dust into a superhydrophobic coating with dirt pickup resistance. An organic-inorganic hybrid superhydrophobic coating is prepared ...We introduce a low-cost and effective technique that can transform waste cement-based dust into a superhydrophobic coating with dirt pickup resistance. An organic-inorganic hybrid superhydrophobic coating is prepared by the sol-gel method using methyltriethoxysilane as a precursor and waste cement-based dust as a film-forming material. Orthogonal experiments and a comprehensive scoring method were used to optimize the composition and production technologies. Our results show that this superhydrophobic organic-inorganic hybrid coating has an average static contact angle of 151.65° and low water adhesion. Related tests reveal that the dirt pickup resistance, washing resistance and film-substrate cohesion of this coating are also outstanding. The multi-scale physical and chemical mechanisms behind the properties of the coating are investigated. This recycled cement-based coating can be used as the external cover of engineering structures to protect them from corrosion.展开更多
文摘The growing demand of organizations for alternative technologies to reduce environmental damage and meet new legislative issues brought greater focus to the activities of product recovery. One way to recover and revalue a product is by remanufacturing, which is defined as the process of recovering a product to its original specifications, promoting the reuse of materials and improving its quality and functionality. However, the context of the remanufacturing industry faces difficulties and is considered unstable and inefficient if compared to manufacturing. In this sense, this paper aims to propose a cell layout based on lean concepts and adapted to the context of remanufacturing, aiming to minimize waste, reduce variability and thereby increase efficiency. The cell layout proposal was based on a literature review and researchers＇ practical experience in the area. This layout can provide the flexibility to handle the variations inherent in the context of remanufacturing, boosting product recovery and related environmental issues.
基金supported by the National Natural Science Foundation of China(Grant Nos.51378113 and 51438003)the National Basic Research Program of China("973"Project)(Grant No.2015CB655102)
文摘We introduce a low-cost and effective technique that can transform waste cement-based dust into a superhydrophobic coating with dirt pickup resistance. An organic-inorganic hybrid superhydrophobic coating is prepared by the sol-gel method using methyltriethoxysilane as a precursor and waste cement-based dust as a film-forming material. Orthogonal experiments and a comprehensive scoring method were used to optimize the composition and production technologies. Our results show that this superhydrophobic organic-inorganic hybrid coating has an average static contact angle of 151.65° and low water adhesion. Related tests reveal that the dirt pickup resistance, washing resistance and film-substrate cohesion of this coating are also outstanding. The multi-scale physical and chemical mechanisms behind the properties of the coating are investigated. This recycled cement-based coating can be used as the external cover of engineering structures to protect them from corrosion.
