Steel slag(SS)accumulates unavoidably due to its complex and unstable composition,high production volumes,and limited value-added resource utilization.Single or multiple interface modifiers were proposed to enhance th...Steel slag(SS)accumulates unavoidably due to its complex and unstable composition,high production volumes,and limited value-added resource utilization.Single or multiple interface modifiers were proposed to enhance the properties of SS through high-speed dispersion,transforming its inherent hydrophilic and oleophobic characteristics into hydrophily and lipophilicity.The modification effects were innovatively assessed by observing the color changes of modified steel slag solutions following the dissolution-settlement equilibrium constant.This approach avoided human-induced errors and improved estimated accuracy in conformance with conventional methods such as oil absorption value,activation index,sedimentation volume,and lipophilicity.The hydrolysis of 3-aminopropyltriethoxysilane(KH)generated–Si(OH)_(3)structure to form hydrogen or covalent bonds with active substances(OH groups)from SS.Concurrently,SS underwent encapsulation via Si–O–Si structure resulting from the dehydration of–Si(OH)_(3).The stearic acid coupling agent(SA),aluminate coupling agent(AC),and titanate coupling agent(TN)underwent chemical reactions with Ca(OH)_(2),Al(OH)_(3),and CaCO_(3)in SS.The acidic SA primarily created stable chemical bonds and acted as a supplement due to its package,reducing surface activity and hydrophilicity while enhancing lipophilicity.Specifically,the optimal modification effect was obtained at 3 wt.%SA.Consequently,3 wt.%SA was established as the benchmark for multiple modifiers and the most effective combination was 3 wt.%SA and 3 wt.%AC.Compared with a single interface modifier,SA corroded the SS surface to provide numerous active sites for further modification by KH,AC,or TN,resulting in a more densely packed structure.In addition,more organic groups on SS prevent the proximity of other particles from agglomerating to achieve dispersion and a synergistic modification,laying a theoretical foundation of SS in a new pathway for organic composite materials.展开更多
随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参...随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参考。本文藉此分别选取了喜马拉雅与蜻蜓FM作为泛播客与分众化播客的代表案例,分析其在内容运营模式、分发模式、盈利模式等方面的差异,并分析其共有困境与未来发展路径。With the vigorous development of “ear economy”, both general podcasting platforms and niche podcasting platforms have shown great potential for development. Behind the success of general podcasting and niche podcasting, different operation modes are implied, and analyzing the different operation modes of the two may provide some references for the differentiated competition of podcasting platforms. In this paper, Himalaya and Dragonfly FM are selected as the representative cases of pan-podcasting and niche podcasting to analyze their differences in content operation mode, distribution mode, profit model, etc., and analyze their common difficulties and future development paths.展开更多
基金supported by the National Natural Science Foundation of China(U23A20605)Anhui Graduate Innovation and Entrepreneurship Practice Project(2022cxcysj090)+2 种基金China Baowu Low Carbon Metallurgy Innovation Foundation(BWLCF202202)the University Synergy Innovation Program of Anhui Province(GXXT-2020-072)the Outstanding Youth Fund of Anhui Province(2208085J19).
文摘Steel slag(SS)accumulates unavoidably due to its complex and unstable composition,high production volumes,and limited value-added resource utilization.Single or multiple interface modifiers were proposed to enhance the properties of SS through high-speed dispersion,transforming its inherent hydrophilic and oleophobic characteristics into hydrophily and lipophilicity.The modification effects were innovatively assessed by observing the color changes of modified steel slag solutions following the dissolution-settlement equilibrium constant.This approach avoided human-induced errors and improved estimated accuracy in conformance with conventional methods such as oil absorption value,activation index,sedimentation volume,and lipophilicity.The hydrolysis of 3-aminopropyltriethoxysilane(KH)generated–Si(OH)_(3)structure to form hydrogen or covalent bonds with active substances(OH groups)from SS.Concurrently,SS underwent encapsulation via Si–O–Si structure resulting from the dehydration of–Si(OH)_(3).The stearic acid coupling agent(SA),aluminate coupling agent(AC),and titanate coupling agent(TN)underwent chemical reactions with Ca(OH)_(2),Al(OH)_(3),and CaCO_(3)in SS.The acidic SA primarily created stable chemical bonds and acted as a supplement due to its package,reducing surface activity and hydrophilicity while enhancing lipophilicity.Specifically,the optimal modification effect was obtained at 3 wt.%SA.Consequently,3 wt.%SA was established as the benchmark for multiple modifiers and the most effective combination was 3 wt.%SA and 3 wt.%AC.Compared with a single interface modifier,SA corroded the SS surface to provide numerous active sites for further modification by KH,AC,or TN,resulting in a more densely packed structure.In addition,more organic groups on SS prevent the proximity of other particles from agglomerating to achieve dispersion and a synergistic modification,laying a theoretical foundation of SS in a new pathway for organic composite materials.
文摘随着“耳朵经济”“声”气蓬勃地发展,无论是泛播客平台还是分众化播客平台都显示出巨大的发展潜力。泛播客与分众化播客“殊途同归”的成功背后暗含着的是二者不同的运营模式,分析二者不同运营模式或可为播客平台差异化竞争提供一些参考。本文藉此分别选取了喜马拉雅与蜻蜓FM作为泛播客与分众化播客的代表案例,分析其在内容运营模式、分发模式、盈利模式等方面的差异,并分析其共有困境与未来发展路径。With the vigorous development of “ear economy”, both general podcasting platforms and niche podcasting platforms have shown great potential for development. Behind the success of general podcasting and niche podcasting, different operation modes are implied, and analyzing the different operation modes of the two may provide some references for the differentiated competition of podcasting platforms. In this paper, Himalaya and Dragonfly FM are selected as the representative cases of pan-podcasting and niche podcasting to analyze their differences in content operation mode, distribution mode, profit model, etc., and analyze their common difficulties and future development paths.
