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Energy & Environmental Materials 2024年第3期7卷 303-310页

作者： Xuehao Zhu Haoyu Cai Cong Bai Zhengzhe Wu Wenjian Shen yiming xiong Juan Zhao Fuzhi Huang Yibing Cheng Jie Zhong Research Centre for Advanced Thin Film Photovoltaics State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216China School of Automobile Engineering Wuhan University of TechnologyWuhan 430070China

In this work,a modified polyurethane adhesive(PUA)was prepared to realize a convenient encapsulation strategy for lead sedimentation and attachable perovskite solar cells(A-PSCs).The modified PUA can completely self-heal within 45 min at room temperature with an efficient lead ion-blocking rate of 99.3%.The PUA film can be coated on a metal electrode with slight efficiency improvement from 23.96%to 24.15%.The thermal stability at 65℃and the humidity stability at 55%relative humidity(RH)are superior to the devices encapsulated with *** PUA film has strong adhesion to the flexible substrate and the initial efficiency of the flexible perovskite module(17.2%)encapsulated by PUA remains 92.6%within 1825 *** results suggest that PUA encapsulation is universal for rigid and flexible PSCs with enhanced stability and low lead ***,it was found that flexible PSCs can be well attached to various substrates with PUA,providing a facile route for the A-PSCs in various scenarios without additional encapsulation and installation.

关键词： adhesive attachable device flexible module lead leakage polyurethane

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基于半桥结构的双极性脉冲电源的研究

强激光与粒子束 2024年第2期36卷 28-34页

作者：潘英进熊奕鸣李孜姜松饶俊峰上海理工大学机械工程学院上海200093 中国科学院苏州生物医学工程技术研究所江苏苏州215163 国网物资有限公司北京100120

为了满足脉冲电场消融的应用需求,解决单极性脉冲电场分布不均匀的问题,研制了一台基于半桥结构的主电路、具有纳秒级前沿的高重复频率双极性亚微秒高压脉冲电源。该脉冲电源由FPGA提供控制信号,经过驱动芯片放大控制信号后,利用光耦隔... 详细信息

为了满足脉冲电场消融的应用需求,解决单极性脉冲电场分布不均匀的问题,研制了一台基于半桥结构的主电路、具有纳秒级前沿的高重复频率双极性亚微秒高压脉冲电源。该脉冲电源由FPGA提供控制信号,经过驱动芯片放大控制信号后,利用光耦隔离驱动多个SiC MOSFET。驱动电路所需元器件较少,信号控制时序简单,可提供负压偏置,使开关管可靠关断,提高了电路的抗电磁干扰能力,使电源能稳定运行。通过电阻负载实验,对比分析了不同栅极电阻对驱动电压的影响,驱动电压上升沿时间越短对应的双极性高压脉冲前沿越快。实验结果表明:所设计的高频双极性脉冲电源在100Ω纯阻性负载上能够稳定产生重复频率双极性纳秒脉冲,输出电压0~±4 kV可调,脉宽0.2~1.0μs可调,正负脉冲相间延时0~1 ms可调,上升沿和下降沿60~150 ns之间。该双极性脉冲电源电路设计结构紧凑,能满足应用的参数需求。

关键词：双极性脉冲脉冲电源高重复频率功率MOSFET 光耦隔离

异氰尿酸三缩水甘油酯诱导扩链改性对聚己二酸/对苯二甲酸丁二酯发泡性能的优化

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高分子材料科学与工程 2024年第5期40卷 67-75页

作者：沈超蒋团辉李胜男朱能贵曾祥补熊一鸣国家复合改性聚合物材料工程技术研究中心贵州贵阳550022 贵州省材料技术创新基地贵州贵阳550022

聚己二酸/对苯二甲酸丁二酯(PBAT)的低熔体强度限制了其在轻量化方面的应用。文中采用异氰尿酸三缩水甘油酯(TGIC)扩链改性PBAT,以改善其熔体强度,从而提高其在注塑成型条件下的发泡性能。通过使用差示扫描量热仪、旋转流变仪和万能力... 详细信息

聚己二酸/对苯二甲酸丁二酯(PBAT)的低熔体强度限制了其在轻量化方面的应用。文中采用异氰尿酸三缩水甘油酯(TGIC)扩链改性PBAT,以改善其熔体强度,从而提高其在注塑成型条件下的发泡性能。通过使用差示扫描量热仪、旋转流变仪和万能力学试验机,研究了不同含量TGIC对PBAT熔融结晶行为、流变性能和力学性能的影响;使用扫描电镜观察了经TGIC扩链改性后不同PBAT样品的发泡性能。结果表明,适量的TGIC能诱导PBAT形成长链支化结构,提高分子链交联度,降低其结晶度、结晶温度和熔融温度,同时提高其拉伸强度,但降低了断裂伸长率。改性后的PBAT具有较高的储能模量、复数黏度和较低的损耗因子,表现出应变硬化行为,熔体弹性和强度得到提高。发泡性能分析结果显示,在注塑发泡条件下,含4%TGIC的样品具有最小泡孔直径、最大泡孔密度和均匀泡孔分布,展现出理想泡孔结构,说明经TGIC扩链改性后,PBAT熔体强度得以改善,发泡性能提升。

关键词：聚己二酸/对苯二甲酸丁二酯扩链改性熔体强度发泡性能

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磁场作用下5083铝合金腐蚀行为研究

中国腐蚀与防护学报 2024年第1期44卷 229-236页

作者：熊伊铭梅婉王泽华余瑞徐诗瑶吴磊张欣河海大学力学与材料学院南京211100 江苏风力发电工程技术中心南京210008

采用浸泡实验、电化学实验,通过扫描电子显微镜(SEM)、能谱分析仪(EDS)和电化学工作站等设备研究了磁场作用下5083铝合金腐蚀行为,探索了磁场对铝合金腐蚀的作用规律。研究结果表明:与普通环境相比,磁场影响了铝合金腐蚀过程中带电粒子... 详细信息

采用浸泡实验、电化学实验,通过扫描电子显微镜(SEM)、能谱分析仪(EDS)和电化学工作站等设备研究了磁场作用下5083铝合金腐蚀行为,探索了磁场对铝合金腐蚀的作用规律。研究结果表明:与普通环境相比,磁场影响了铝合金腐蚀过程中带电粒子运动,抑制Cl^(-)对钝化膜的破坏作用,导致5083铝合金开路电位和点蚀电位的升高,腐蚀电流密度的降低,合金浸泡后表面的点蚀坑数量和尺寸降低。磁场能够降低5083铝合金的点蚀倾向和腐蚀速率,随着磁场强度的增加,抑制腐蚀的作用越明显。

关键词： 5083铝合金磁场腐蚀行为点蚀

硅烷偶联剂对低含量碱式硫酸镁晶须/聚丙烯复合材料的结晶行为及力学性能的影响

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塑料工业 2024年第3期52卷 160-167页

作者：明星星秦舒浩龙雪彬武晓熊一鸣邓庆鑫刘世新重庆长安汽车股份有限公司重庆400021 贵州省材料产业技术研究院贵州贵阳550014 贵州黔新汽车零配件制造科技有限公司贵州黔南布依族苗族自治州550601

选用十六烷基、氨基、环氧基3种不同硅烷偶联剂,先对碱式硫酸镁晶须(MOSw)进行表面处理,再与聚丙烯(PP)熔融共混改性,结合偶联剂的处理、加工工艺、树脂协同复配等技术,制备了低MOSw含量(质量分数仅为3%)的MOSw/PP复合材料,利用场发射... 详细信息

选用十六烷基、氨基、环氧基3种不同硅烷偶联剂,先对碱式硫酸镁晶须(MOSw)进行表面处理,再与聚丙烯(PP)熔融共混改性,结合偶联剂的处理、加工工艺、树脂协同复配等技术,制备了低MOSw含量(质量分数仅为3%)的MOSw/PP复合材料,利用场发射扫描电镜、红外光谱、差示扫描量热仪等分析测试手段,探讨了3种硅烷偶联剂对MOSw红外光谱和微观形貌的影响以及对MOSw/PP复合材料的结晶行为、力学性能的影响,并分析了其变化规律及机理。结果表明,3种硅烷偶联剂中,十六烷基硅烷由于—C16H33基团的碳链最长、极性小,对MOSw的分散效果最好,环氧基硅烷次之,氨基硅烷最差;MOSw的加入对PP的结晶起到了阻碍的作用,硅烷偶联剂改性后提高了MOSw的分散性,进一步阻碍了PP的结晶,添加十六烷基硅烷改性晶须的复合材料的结晶度最低,仅为39.3%,与纯PP的结晶度相比下降了14.4%,并且添加十六烷基硅烷、环氧基硅烷改性的MOSw,加快了复合材料结晶速度;经十六烷基硅烷改性的MOSw与PP的结合力最好,基于3%质量分数的MOSw制备的复合材料的性能得到了大幅度的提升,密度仅0.963 g/cm^(3),与纯PP的力学性能相比,弯曲模量提高了116%,达到了2323 MPa,拉伸强度提高了7.8%,缺口冲击强度提高了2.5%,性能好、密度低,可用于制备轻量化的产品。

关键词：轻量化晶须复合材料硅烷偶联剂结晶行为力学性能

模压工艺对亚麻/丙纶纤维复合材料的性能及二氧化碳排放量的影响

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塑料工业 2024年第3期52卷 152-159页

作者：麦成猛蒋政余斌斌黄湘琦文哲龙雪彬熊一鸣武晓上汽通用五菱汽车股份有限公司广西柳州545007 贵州省材料产业技术研究院贵州贵阳550014

亚麻纤维和丙纶纤维经过混纺、梳理、铺网、针刺、模压工艺制得亚麻/丙纶复合材料。本文研究了不同前处理温度和模压压力的亚麻/丙纶复合材料的微观形貌、拉伸性能、弯曲性能以及动态热机械性能变化,并以此数据为基础,分别以亚麻纤维/... 详细信息

亚麻纤维和丙纶纤维经过混纺、梳理、铺网、针刺、模压工艺制得亚麻/丙纶复合材料。本文研究了不同前处理温度和模压压力的亚麻/丙纶复合材料的微观形貌、拉伸性能、弯曲性能以及动态热机械性能变化,并以此数据为基础,分别以亚麻纤维/丙纶纤维复合材料、20%质量分数的矿物填充聚丙烯材料制备某车型的汽车门板零件,对比分析了两种不同工艺,制备同一零件的质量及二氧化碳排放量。结果表明,提高前处理温度和模压压力,可以提高树脂对纤维的浸润和包裹力,减少孔隙,但温度过高或压力过大,会出现滑动释压、结构坍塌现象,破坏纤维网络结构;随着前处理温度的增加,复合材料拉伸强度呈先升高后降低趋势,在210℃时达到最大值29.7 MPa,弯曲模量和弯曲强度均呈上升的趋势;随模压压力的增加,复合材料的拉伸强度先增加后降低,断裂伸长率逐渐下降,弯曲强度呈下降的趋势,弯曲模量先升高后降低,在22 MPa时弯曲模量达到最大值2839 MPa;与传统的20%质量分数滑石粉增强的聚丙烯材料(PP-TD20)注塑成型工艺比较,亚麻/丙纶纤维复合材料模压成型工艺制备的零件刚性更好,二氧化碳排放量降低35.2%。

关键词：亚麻/丙纶复合材料模压成型工艺微观结构力学性能二氧化碳排放量

Low-cost biodegradable lead sequestration film for perovskite solar cells

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能源化学:英文版 2023年第9期84卷 311-320页

作者： yiming xiong Haoyu Cai Wang Yue Wenjian Shen Xuehao Zhu Juan Zhao Fuzhi Huang Yi-Bing Cheng Jie Zhong State Key Laboratory of Advanced Technology of Materials Composite Technology Wuhan University of TechnologyWuhan 430070HubeiChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216GuangdongChina School of Automobile Engineering Wuhan University of TechnologyWuhan 430070HubeiChina

Despite the high efficiency that has been achieved for the perovskite solar cells(PSCs),the hazardous lead leakage from the perovskite absorber layer is one of the crucial barriers still hindering its penetration into the commercial market for a large-scale ***,we report a novel low-cost and biodegradable lead sequestration layer with high compatibility for up-scalable encapsulation of *** a precisely designed cross-linking reaction of chemical agents,the as-made biodegradable chitosan composite film shows enhanced mechanical strength,chemical stability,and lead adsorption *** designed encapsulation strategy reduces over 99.99% lead leakage to <2 ppb under varied simulations of weather conditions(hail,rain,or flood),which meet the safe level of drinking water set by the US Environmental Protection Agency(EPA).Moreover,the PSC efficiency is improved from 21.91% to22.82% due to the improved light absorption from the printed biodegradable lead absorption ***,we present a prototype process of accumulation and recycling of lead compounds in PSCs derbies via the biodegradation *** on the low-cost biodegradable lead sequestration film,this environmental-friendly encapsulation strategy could address the lead leakage issue for further commercialization of PSCs.

关键词： Lead sequestration Cross-linking Perovskite solar cells Biodegradable Recycling

Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)electrodes with enhanced conductivity and transparency for semitransparent perovskite solar cells

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Frontiers of Chemical Science and Engineering 2023年第2期17卷 206-216页

作者： Yongshun Wang Yuxi Dou Zhengzhe Wu Yingxin Tian yiming xiong Juan Zhao De Fang Fuzhi Huang Yi-Bing Cheng Jie Zhong State Key Laboratory of Advanced Technology of Materials Composite Technology Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216China School of Automobile Engineering Wuhan University of TechnologyWuhan 430070China Center for Materials Research and Analysis Wuhan University of TechnologyWuhan 430070China

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)is an important organic electrode for solution-processed low-cost electronic ***,it requires doping and post-solvent treatment to improve its conductivity,and the chemicals used for such treatments may affect the device fabrication *** this study,we developed a novel route for exploiting ultrafast lasers(femtosecond and picosecond laser)to simultaneously enhance the conductivity and transparency of PEDOT:PSS films and fabricate patterned solution-processed electrodes for electronic *** conductivity of the PEDOT:PSS film was improved by three orders of magnitude(from 3.1 to 1024 S·cm^(–1)),and high transparency of up to 88.5%(average visible transmittance,AVT)was *** and depthprofiling X-ray photoelectron spectroscopy revealed that the oxidation level of PEDOT was enhanced,thereby increasing the carrier *** surface PSS content also decreased,which is beneficial to the carrier mobility,resulting in significantly enhanced electrical ***,we fabricated semitransparent perovskite solar cells using the as-made PEDOT:PSS as the transparent top electrodes,and a power conversion efficiency of 7.39%was achieved with 22.63%***,the proposed route for synthesizing conductive and transparent electrodes is promising for vacuum and doping-free electronics.

关键词： PEDOT:PSS ultrafast laser transparent electrode ST-PSCs patterning

Productivity in the Southern Ocean Antarctic Zone during the Northern Hemisphere Glaciation(NHG)and its link to atmospheric pCO_(2)

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Science China Earth Sciences 2024年第7期67卷 2242-2252页

作者： yiming WU Jingteng GUO Xiangyu ZHAO Wenshen XIAO Heng LIU Zhifang xiong Tiegang LI Key Laboratory of Marine Geology and Metallogeny First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Laboratory for Marine Geology Laoshan LaboratoryQingdao 266237China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Key Laboratoryof Polar Ecosystem and Climate Change Shanghai Jiao Tong UniversityMinistry of EducationShanghai 200030China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China

A decrease in atmospheric CO_(2)partial pressure(pCO_(2))is considered an important prerequisite for the onset and intensification of Northern Hemisphere Glaciation(NHG).However,how the ocean sequestered missing CO_(2)during the NHG is still *** in surface productivity and deep ventilation in the Southern Ocean(SO)have been proposed to explain the variations in atmospheric pCO_(2)over the last eight glacial cycles,but it is unclear whether these mechanisms contributed to the decrease in atmospheric pCO_(2)during the *** titanium-normalized contents and mass accumulation rates of biogenic opal and total organic carbon from the International Ocean Discovery Program(IODP)Expedition 374 Site U1524A,we reconstruct the productivity in the Ross Sea,Antarctica,from 3.3 Ma to 2.4 *** productivity records exhibit a long-term decreasing trend and several distinct phased evolutionary ***,the local productivity fluctuated dramatically during 3.3-3.0 Ma,decreased gradually during 3.0-2.6 Ma,and remained relatively constant during 2.6-2.4 *** comparing productivity with its potential influences,we infer that the phased and long-term evolutions of productivity were mainly controlled by changes in deep ocean *** ice expansion might have decreased productivity during 3.3-3.0 Ma by light *** in eolian dust input have little effect on *** analysis revealed no coupling linkage between productivity and atmospheric pCO_(2),indicating that the productivity in the SO Antarctic Zone(AZ)was not the main factor controlling the atmospheric CO_(2)decrease during the *** improve our understanding of the role of SO processes in the NHG,further studies should focus on the potential influences of deep ocean ventilation on atmospheric pCO_(2)in the AZ,and similar studies should also be extended to the sea area in the Subantarctic Zone.

关键词： Ross Sea Biogenic opal Total organic carbon Deep ocean ventilation Sea ice Ocean carbon cycle

Development of Moxi Gas Field, Sichuan Basin

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China Oil & Gas 1995年第3期2卷 42-45页

作者： xiong yiming(Sichuan Petroleum Administration) Sichuan Petroleum Administration

ＤｅｖｅｌｏｐｍｅｎｔｏｆＭｏｘｉＧａｓＦｉｅｌｄ，ＳｉｃｈｕａｎＢａｓｉｎ￥ＸｉｏｎｇＹｉｍｉｎｇ（ＳｉｃｈｕａｎＰｅｔｒｏｌｅｕｍＡｄｍｉｎｉｓｔｒａｔｉｏｎ）Ｋｅｙｗｏｒｄｓ：Ｇａｓｆｉｅｌｄ，Ｅｘｐｌｏｒａｔ... 详细信息

ＤｅｖｅｌｏｐｍｅｎｔｏｆＭｏｘｉＧａｓＦｉｅｌｄ，ＳｉｃｈｕａｎＢａｓｉｎ￥ＸｉｏｎｇＹｉｍｉｎｇ（ＳｉｃｈｕａｎＰｅｔｒｏｌｅｕｍＡｄｍｉｎｉｓｔｒａｔｉｏｎ）Ｋｅｙｗｏｒｄｓ：Ｇａｓｆｉｅｌｄ，Ｅｘｐｌｏｒａｔｉｏｎ，Ｃｏｒｒｏｓｉｏｎｃｏｎｔ...

关键词： Gas field Exploration Corrosion control Stimulation Development