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Synthesis of PDMS-PS IPN Pervaporation Membrane for Pervaporation Recovery of Butanol

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Journal of wuhan University of Technology(Materials Science) 2018年第6期33卷 1308-1314页

作者： YU Weil HU Minnie College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China Hubei Military-Civilian Integration and Co-Innovation Center of Aerospace Power and Materials Technology Wuhan 430072China Luzhou North Chemical Industres Co. LtdLuzhou 646003China School of Printing and Packaging Wuhan UniversityWuhan 430072China

Polydimethylsiloxane(PDMS)-polystyrene(PS) interpenetrating polymer network(IPN) was prepared and characterized by FTIR, TGA, WCA, swelling experiments, and SEM. The IPN was used for pervaporation(PV) recovery of butanol. Both the permeation flux and separation factor increased with feed temperature, and both water and butanol fluxes increased with feed concentration, while no obvious effect of concentration on separation factor was found. Through the formation of IPN structure, the total flux of PDMS-PS IPN pervaporation membrane increased greatly with the decrease of separation factor. At the feed temperature of 60 °C, the IPN membrane obtained a total flux of 920.3 g/m2h with a separation factor of 9.5.

关键词： butanol interpenetrating polymer network PDMS PS

RV-SFAMA-MA:RTS-VBF Algorithm Used in a Slotted-Based MAC Protocol for Underwater Acoustic Networks with an Acknowledgement Scheduling Algorithm

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RV-SFAMA-MA:RTS-VBF Algorithm Used in a Slotted-Based MAC Pr...

High-sensitivity and fast-response fiber optic temperature sensor using an anti-resonant reflecting optical waveguide mechanism

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作者： ziye wu Meiqin Liu Senlin Zhang State Key Laboratory of Industrial Control Technology Zhejiang University College of Electrical Engineering Zhejiang University

In recent years,spatio-temporal uncertainty has been a great challenge in the Media Access Control（MAC） protocol design for underwater acoustic networks（UANs）.In this paper,a slotted based MAC protocol for UANs is proposed,called RV-SFAMA-MA,in order to solve the specific problems of UANs,such as long propagation,low channel utilization and luxurious underwater energy ***,the sending time slot of the acknowledgment（ACK） control message is scheduled to avoid collision,and the appropriate ACK scheduling algorithm is selected by calculating the optimum capacity of UANs to solve the exposed terminal ***,a multiple reception mechanism is introduced to improve the channel utilization,in which a novel RTS-VBF competition algorithm is proposed to determine the sending sequence of each node,so as to reduce the sum of network transmission delay and alleviate the funneling *** experiments show that compared with broadcast mac（BC-MAC） protocol and slotted floor acquisition multiple access（SFAMA） protocol,our RV-SFAMA-MA can achieve 25.44%-43.98% higher throughput and much lower energy consumption in a minitype UANs topology.

关键词： Underwater acoustic networks medium access control protocol acknowledgment scheduling algorithm multiple reception mechanism RTS competition mechanism

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Photonics Research 2023年第8期11卷 1397-1407页

作者： ZHIBIN LI ziye wu ZHUOQI LI LIANGXUN OU WENXIANG ZHANG ZHICONG LAI YU ZHANG MENGYUAN XIE JIEYUAN TANG WENGUO ZHU HUADAN ZHENG YONGCHUN ZHONG XIONG DENG XIHUA ZOU ZHE CHEN JIANHUI YU Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China

Temperature sensing is essential for human health ***-sensitivity(>1 nm∕℃)fiber sensors always require long interference paths and temperature-sensitive materials,leading to a long sensor and thus slow response(6–14 s).To date,it is still challenging for a fiber optic temperature sensor to have an ultrafast(~ms)response simultaneously with high ***,a side-polished single-mode/hollow/single-mode fiber(SPSHSF)structure is proposed to meet the challenge by using the length-independent sensitivity of an anti-resonant reflecting optical waveguide *** a polydimethylsiloxane filled sub-nanoliter volume cavity in the SP-SHSF,the SP-SHSF exhibits a high temperature sensitivity of 4.223 nm/℃ with a compact length of 1.6 mm,allowing an ultrafast response(16 ms)and fast recovery time(176 ms).The figure of merit(FOM),defined as the absolute ratio of sensitivity to response time,is proposed to assess the comprehensive performance of the *** FOM of the proposed sensor reaches up to 263.94(nm/℃)∕s,which is more than two to three orders of magnitude higher than those of other temperature fiber optic sensors reported ***,a threemonth cycle test shows that the sensor is highly robust,with excellent reversibility and accuracy,allowing it to be incorporated with a wearable face mask for detecting temperature changes during human *** high FOM and high stability of the proposed sensing fiber structure provide an excellent opportunity to develop both ultrafast and highly sensitive fiber optic sensors for wearable respiratory monitoring and contactless in vitro detection.

关键词： fiber waveguide resonant

“钝感”思辨：网络媒体时代中的南京城市特质及其影响下的建筑实践

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建筑实践 2024年第Z1期 121-127页

作者：吴子夜米思建筑

不论是古代、近代、现代，对于中国的城市规划或建筑设计，南京始终是一个绕不过去的存在。它是中国最古老的都城之一，也是现代中国建筑学教育的起源之一，对当代中国建筑师的建筑思维和价值观的形成有着非常大的影响。“钝感”，字面...

不论是古代、近代、现代，对于中国的城市规划或建筑设计，南京始终是一个绕不过去的存在。它是中国最古老的都城之一，也是现代中国建筑学教育的起源之一，对当代中国建筑师的建筑思维和价值观的形成有着非常大的影响。“钝感”，字面意思为迟钝之感，原是心理学名词，是“敏感”的反义词。在网络媒体时代，“钝感”被拿来与“网感”相对，取义对“网红”似的表达的不敏感。南京便是一个“钝感”大于“网感”的城市。

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风景的进化——南京战斗机械厂改造更新

建筑学报 2024年第4期 53-55页

作者：吴子夜刘玮周苏宁米思建筑设计事务所南京210019

1历史变迁项目位于南京老城区外,玄武湖北侧的红山脚下。在1500多年前的六朝时期,红山名为“大壮观山”,民国时期在此发现赤铁矿,遂渐渐被人们称为“红山”。1948年,“红山”已成为正式名称出现在《南京街道详图》中,成为片区称谓。1952... 详细信息

1历史变迁项目位于南京老城区外,玄武湖北侧的红山脚下。在1500多年前的六朝时期,红山名为“大壮观山”,民国时期在此发现赤铁矿,遂渐渐被人们称为“红山”。1948年,“红山”已成为正式名称出现在《南京街道详图》中,成为片区称谓。1952年,南京市结合城北铁路,在红山西麓兴建了一批工厂,南京战斗机械厂为其中之一。

关键词：改造更新玄武湖六朝时期民国时期机械厂

低山丘陵区土壤硒、镉空间分异对土地利用景观特征的响应

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环境科学学报 2023年第6期43卷 407-418页

作者：赵家宇刘怡吴梅田兴磊伍子夜祝铭阳刘永林重庆师范大学地理与旅游学院重庆401331 重庆师范大学 GIS应用研究重点实验室重庆401331 山东省地质科学研究院济南250013

为明确低山丘陵区土地利用景观特征和景观格局对土壤硒(Se)、镉(Cd)含量空间分异的影响.以重庆市江津区为研究区,采集和测定了247件表层土壤样品,将研究区划分为3519个1 km×1 km网格单元,再基于30 m土地利用数据测算了每个网格单元土... 详细信息

为明确低山丘陵区土地利用景观特征和景观格局对土壤硒(Se)、镉(Cd)含量空间分异的影响.以重庆市江津区为研究区,采集和测定了247件表层土壤样品,将研究区划分为3519个1 km×1 km网格单元,再基于30 m土地利用数据测算了每个网格单元土地利用景观特征指数和景观格局指数,并运用冗余分析(RDA)和双变量空间自相关(Moran’s I),定量探讨了景观格局对表土Se、Cd含量分异的影响.结果表明:(1)江津区表土Se(0.36 mg·kg^(-1),算术均值,下同)、Cd(0.27 mg·kg^(-1))含量高于渝西地区土壤背景值,但表土Cd含量略低于全国农用地风险筛选值.(2)林地表土Se含量(0.43 mg·kg^(-1))显著高于耕地(0.34 mg·kg^(-1)),而水田(0.29 mg·kg^(-1))、旱地(0.27 mg·kg^(-1))土壤Cd含量高于林地(0.25 mg·kg^(-1)).(3)受成土母质影响,空间上林地景观聚集度与土壤Se含量呈负相关,耕地景观聚集改变土壤理化性质间接影响土壤Se含量.(4)研究区景观多样性和均匀度与表土Se、Cd含量呈正相关,景观格局是土壤Cd空间分异的主要因素,土壤Se含量更多受控于成土母质.从景观格局角度,定量分析了低山丘陵区土地利用景观特征与土壤Se、Cd的关系,可为优化富硒土壤开发和控制土壤镉污染提供参考.

关键词：土地利用景观特征景观格局硒镉空间分异低山丘陵区

基于银纳米线的柔性透明电极的制备及性能研究

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光电子．激光 2024年第3期35卷 241-251页

作者：吴自业邢晓琳高学喜刘云龙李淑红王文军聊城大学物理科学与信息工程学院山东聊城252059 聊城大学山东省光通信科学与技术重点实验室山东聊城252059

有机发光二极管(organic light emitting diodes, OLEDs)可以柔性制备,在未来的可穿戴应用上有广阔的发展前景,而柔性透明电极(flexible transparent electrode, FTE)的性能直接影响着柔性OLED的性能。本文基于银纳米线(AgNWs)和聚(3,4... 详细信息

有机发光二极管(organic light emitting diodes, OLEDs)可以柔性制备,在未来的可穿戴应用上有广阔的发展前景,而柔性透明电极(flexible transparent electrode, FTE)的性能直接影响着柔性OLED的性能。本文基于银纳米线(AgNWs)和聚(3,4-乙烯二氧噻吩)∶聚苯乙烯磺酸(PEDOT∶PSS)制备了FTE,并采用甲醇浸渍、氩等离子处理、紫外辐射3种不同的方式对该电极进行处理,优化FTE的光电性能。研究发现:甲醇浸渍,可减少AgNWs上聚合物的包覆;等离子体处理和紫外辐射,可对AgNWs进行焊接;而两种方式的协同作用则可以对FTE的光电性能进一步优化。实验获得最优FTE的方阻为14.18Ω/sq,在550 nm处的透过率可达到84%以上。经过500次弯曲测试后,FTE的方阻变化率低于15%。本文的工作对FTE的制备及优化提供了可行性方案。

关键词：柔性有机发光二极管(FOLED) 柔性透明电极(FTE) 氩等离子体处理甲醇浸渍焊接

Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao Tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui wu Shuize Wang Guilin wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

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马来酸酐接枝氯化聚丙烯的制备和性能研究

化工新型材料 2016年第7期44卷 158-160页

作者：吴子晔孙晓泉胡铭杰白洪强葛强朱文英黄驰武汉大学化学与分子科学院有机硅化合物及材料教育部工程研究中心武汉430072 泸州北方化学工业有限公司泸州646605

以马来酸酐(MAH)为接枝单体、过氧化苯甲酰为引发剂,采用熔融接枝法改性氯化聚丙烯(CPP)。采用红外和核磁对产物进行表征,计算了改性产品的接枝率,系统探讨了引发剂用量、反应温度、接枝率对接枝产物酯溶性和在聚丙烯(PP)基材表面附着... 详细信息

以马来酸酐(MAH)为接枝单体、过氧化苯甲酰为引发剂,采用熔融接枝法改性氯化聚丙烯(CPP)。采用红外和核磁对产物进行表征,计算了改性产品的接枝率,系统探讨了引发剂用量、反应温度、接枝率对接枝产物酯溶性和在聚丙烯(PP)基材表面附着力和粘接强度的影响及原因。结果表明:MAH接枝CPP改变了产品极性,提高了产品在乙酸乙酯中的溶解度,在反应条件适宜时也提高了产品在PP基材表面的附着力。当过氧化苯甲酰(BPO)用量为0.05份,100℃时,接枝改性CPP在乙酸乙酯中溶解度最大(9.58g),较未改性CPP提升了4.67倍,在PP基材上的附着力最好(国际0级),粘接强度最大(0.689MPa)。

关键词：氯化聚丙烯接枝改性酯溶性粘接强度