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Journal of Renewable Materials 2023年第3期11卷 1209-1222页

作者： henghui Deng Jingyi Lu Dunsheng Liang Xiaomin Wang Tongyao Wang Weihao Zhang Jing Wang Chaoqun Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou510642China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou510642China Guangdong Provincial Key Laboratory of Silviculture Protection and UtilizationGuangdong Academy of ForestryGuangzhou510520China

In this study,acrylic acid was used as a neutralizer to prepare bio-based WPU with an interpenetrating polymer network structure by thermally induced free radical emulsion *** effects of the content of acrylic acid on the properties of the resulting waterborne polyurethane-poly(acrylic acid)(WPU-PAA)dispersion and the films were systematically *** results showed that the cross-linking density of the interpenetrating network polymers was increased and the interlocking structure of the soft and hard phase dislocations in the molecular segments of the double networks was tailored with increasing the content of acrylic acid,leading to enhancement of the mechanical properties and water resistance of WPU-PAA ***,with the increase in content of acrylic acid,the tensile strength,Young’s modulus,and toughness of the WPU-PAA-110 film increased by 3 times,and 8 times,and 2.4 times compared with WPU-PAA-80,*** WPU-PAA-100 film showed the best water resistance,and the water absorption rate at 96 h was only 3.27%.This work provided a new design scheme for constructing bio-based WPU materials with excellent properties.

关键词： Bio-based waterborne polyurethane interpenetrating polymer network highly water resistance superior mechanical performance

Interdisciplinary research of materials and energy in honor of Nobel laureate John ***

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Interdisciplinary Materials 2022年第3期1卷 321-322页

作者： Yunhui Huang Liqiang Mai henghui Xu Ya You State Key Laboratory of Material Processing and Die and Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina School of Materials Science and Engineering Wuhan University of TechnologyWuhanHubeiChina

As we know,Prof John *** discovered almost all the commercial cathode materials,LiCoO_(2),LiMn_(2)O_(4),and LiFePO_(4),for lithium-ion batteries(LIBs).Nowadays,LIBs have been extensively used in our daily life,which provide power for mobile phones,laptop computers,electric vehicles,energy storage systems,and so *** discovery of LIBs is believed as one of the most important inventions in the 20th ***,he won the Nobel prize in chemistry in 2019 together with *** Whittingham and Akira *** pioneering contributions have created a rechargeable world for our modern society.

关键词： enough energy lithium

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2195铝锂合金火箭贮箱焊接接头强度分析

机械制造与自动化 2024年第1期53卷 66-72,77页

作者：马佳琳张恒珲李磊童明波王芳丽南京航空航天大学航空学院江苏南京210016 金陵科技学院机电工程学院江苏南京211169

为确定火箭贮箱搅拌摩擦焊(FSW)焊接接头疲劳寿命,完成对贮箱结构的疲劳分析,对2195铝锂合金母材标准试件与搅拌摩擦焊焊接接头标准试验件进行静力试验与常幅疲劳试验,得出母材与FSW焊接接头的拉伸强度等力学性能参数,同时绘制其S-N曲... 详细信息

为确定火箭贮箱搅拌摩擦焊(FSW)焊接接头疲劳寿命,完成对贮箱结构的疲劳分析,对2195铝锂合金母材标准试件与搅拌摩擦焊焊接接头标准试验件进行静力试验与常幅疲劳试验,得出母材与FSW焊接接头的拉伸强度等力学性能参数,同时绘制其S-N曲线。在试验数据基础上,应用ABAQUS软件对贮箱进行静力分析,联合NCODE软件估算贮箱模型在给定工况载荷下的疲劳寿命。结果表明:应力最严重位置为筒段焊缝处,最先破坏位置发生在筒段横竖焊缝交接处。在疲劳寿命分析的基础上应用ABAQUS-FRANC3D软件联合仿真,在焊缝破坏位置处插入角裂纹,模拟三维裂纹扩展,当裂纹扩展为穿透裂纹时,计算终止。计算了三维表面裂纹的应力强度因子和裂纹扩展寿命,为贮箱损伤容限提供了评估思路。

关键词：搅拌摩擦焊疲劳裂纹扩展疲劳试验

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催化原理教学改革探析

广东化工 2024年第9期51卷 180-181页

作者：陈鹏宋美洋彭海燕宋恒辉王易贵州大学贵州贵阳550025

现代催化科学与技术的发展日新月异,涉猎十分广泛,具有理论与实际联系紧密学科特点。为了提高《催化原理》课程的教学质量。本文从催化原理课程的教学准备、教学过程、教学反思和科研反哺等过程中不断地改进,激发学生对催化领域的向往,... 详细信息

现代催化科学与技术的发展日新月异,涉猎十分广泛,具有理论与实际联系紧密学科特点。为了提高《催化原理》课程的教学质量。本文从催化原理课程的教学准备、教学过程、教学反思和科研反哺等过程中不断地改进,激发学生对催化领域的向往,为催化科学的旺盛生命力添砖加瓦。

关键词：催化原理教学改革师生互促教学反思研学相融

Electronegativity-Induced Single-Ion Conducting Polymer Electrolyte for Solid-State Lithium Batteries

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Energy & Environmental Materials 2023年第4期6卷 40-48页

作者： Tianyi Hou Yumin Qian Dinggen Li Bo Xu Zhenyu Huang Xueting Liu Haonan Wang Bowen Jiang henghui Xu Yunhui Huang State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement Ministry of EducationSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Energy and Power Engineering Huazhong University of Science and TechnologyWuhan 430074China Jiangsu Jitri-Hust Intelligent Equipment Technology Nanjing 210000China

The application of solid polymer electrolytes(SPEs)is severely impeded by the insufficient ionic conductivity and low Li^(+)transference numbers(t_(Li)^(+)).Here,we report an iodine-driven strategy to address both the two longstanding issues of SPEs *** lodine-containing groups introduced on polymer chains effectively attract Li^(+)ions,facilitate Li^(+)transport,and promote the dissociation of Li ***,iodine is also favorable to alleviate the strong O-Li^(+)coordination through a Lewis acidbase interaction,further improving the ionic conductivity and t_(Li)^(+).As a proof of concept,an iodinated single-ion conducting polymer electrolyte(IPE)demonstrates a high ionic conductivity of 0.93 mS cm^(-1)and a high t_(Li)^(+)of 0.86 at 25℃,which is among the best results ever reported for ***,symmetric Li/Li cells with IPE achieve a long-term stability over 2600 h through the in-situ formed LiF-rich *** a result,Li-S battery with IPE maintains a high capacity of 623.7 mAh g^(-1)over 300 cycles with an average Coulombic efficiency of 99%.When matched with intercalation cathode chemistries,Li/IPE/LiFePO_(4)and Li/IPE/LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2)solid-state batteries also deliver high-capacity retentions of 95%and 97%at 0.2 C after 120 cycles,respectively.

关键词： iodine lithium polymer electrolytes single-ion conducting solid-state batteries

山东地区黄河冲积平原粉土的分布规律及工程特性调研

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黑龙江科学 2024年第10期15卷 32-34页

作者：李孟冯美军曲恒辉周圣杰朱辉山东高速新材料集团有限公司济南250014 山东省济南市交通科学研究院济南250100

为进一步揭示黄河冲积平原地区粉土工程的特性及其分布规律,对山东省几个较为典型的地区进行土样采集分析,结合工程分类方法,对黄河流域上、中、下游土体进行室内CBR、竖向膨胀率、颗粒分析、XRD。试验结果表明,山东地区黄河冲积平原地... 详细信息

为进一步揭示黄河冲积平原地区粉土工程的特性及其分布规律,对山东省几个较为典型的地区进行土样采集分析,结合工程分类方法,对黄河流域上、中、下游土体进行室内CBR、竖向膨胀率、颗粒分析、XRD。试验结果表明,山东地区黄河冲积平原地区土质以含砂低液限粉土为主,微观组成较为相似,但受水文影响,各地土体砂石料含量不同,体现出黄河水沙变化的复杂性。

关键词：黄河冲积平原山东省吸水率竖向膨胀率

Interwoven nickel(II)-dimethylglyoxime nanowires in 3D nickel foam for dendrite-free lithium deposition

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Chinese Chemical Letters 2022年第4期33卷 2165-2170页

作者： Tianyi Zhou Yanlu Mu Jianyang Wu Bing Zhong Chengkai Yang Qian Wang Wen Liu henghui Zhou Peng Jiang CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Chemical Resource Engineering College of ChemistryBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China Institute of Energy Innovation College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China

Metal skeletons,such as Nickel Foam(NF) has attracted worldwide interests as stable host for lithium metal anode because of its high stability,large specific surface area and high ***,most metal skeletons have lithophobic surface and uneven current distribution that result in sporadic lithium nucleation and uncontrolled dendrites ***,we describe a sequential immersing strategy to generate interwoven Nickel(Ⅱ)-dimethylglyoxime(Ni-DMG) nanowires at NF to obtain composite skeleton(NDNF),which can be used as an stable host for Li metal *** Ni-DMG has proved effective to realize uniform lithium nucleation and dendrite-free lithium *** with the three dimensional(3 D) hierarchical porous structure,the composite host shows a significantly improved coulombic efficiency(CE) than pristine commercial nickel ***,the corresponding Li‖Li symmetrical cells can run more than 700 h with low voltage hysteresis 22 mV at 1.0 mA/cm^(2),and Li@NDNF‖LiFePO;full-cell exhibits a high capacity retention of 82.03% at 1.0 C during 630 *** results proved the effectiveness of metal-organic complexes in governing Li metal growth and can be employed as a new strategy for dendrite-free Li metal anode and safe Li metal batteries(LMBs).

关键词： Nickel(II)-dimethylglyoxime Nickel foam Metal-organic complex Uniform nucleation Dendrite-free

基于AFM的SBS改性沥青老化过程力学特性研究

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市政技术 2024年第1期42卷 212-218页

作者：曲恒辉丁昕李孟田冬军冯美军王飞王鹏山东高速材料技术开发集团有限公司山东济南250014 山东建筑大学交通工程学院山东济南250101

为了探究改性沥青在老化过程中宏观与微观性能的变化,制备了掺量为5.5%的SBS改性沥青,并进行了短期与长期老化试验,分析了其基本性能指标。采用温度扫描与频率扫描试验研究了SBS改性沥青的流变性能,采用AFM试验分析了其表面微观形貌和... 详细信息

为了探究改性沥青在老化过程中宏观与微观性能的变化,制备了掺量为5.5%的SBS改性沥青,并进行了短期与长期老化试验,分析了其基本性能指标。采用温度扫描与频率扫描试验研究了SBS改性沥青的流变性能,采用AFM试验分析了其表面微观形貌和耗散力,并结合力曲线分析了其黏附力及杨氏模量在老化前后的变化。研究结果表明,短期老化对SBS改性沥青流变性能的影响较小,长期老化对其流变性能影响显著,弹性模量和黏性模量均增大,呈现出变硬、变脆的特性;AFM试验表明SBS改性沥青在老化后高度增大,且蜂状结构尺寸增大、数量增多,黏附力和耗散力均降低,杨氏模量增大,验证了宏观流变试验的结果。

关键词： AFM SBS改性沥青老化力学特性

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黄土固化剂及固化土养护液的配方优化研究

水利与建筑工程学报 2024年第2期22卷 171-179,213页

作者：郭昊炜鞠鹏张豪樊恒辉高建恩孙胜利西北农林科技大学水利与建筑工程学院陕西杨凌712100 中国科学院水利部水土保持研究所陕西杨凌712100 郑州华之誉新材料科技有限公司河南巩义451200 昆明理工大学电力工程学院云南昆明650500

为提高土体固化剂加固新疆伊犁州黄土的固化效果,通过正交试验及AHPCRITIC主客观综合赋权法,进行黄土土体固化剂及固化土养护液配方优化试验,优化结果为:得到土体固化剂及固化土养护液的配方及各组分的优属度,在12%水泥掺量条件下,MBE... 详细信息

为提高土体固化剂加固新疆伊犁州黄土的固化效果,通过正交试验及AHPCRITIC主客观综合赋权法,进行黄土土体固化剂及固化土养护液配方优化试验,优化结果为:得到土体固化剂及固化土养护液的配方及各组分的优属度,在12%水泥掺量条件下,MBER土体固化剂的最优配合比为9%石灰、2%石膏、0.3%硫酸钠、0.3%硅酸钠、0.3%明矾、1.2%减水剂,其7d龄期的饱水无侧限抗压强度为3.23MPa,干燥无侧限抗压强度为10.23MPa,软化系数为0.32;固化土养护液的最优配合比为0.10 mol/L碳酸氢钠溶液、0.04mol/L硫酸钠溶液、2%纳米二氧化硅溶胶,其3d、7d和14d的饱水无侧限抗压强度分别为1.88MPa、3.76MPa和5.22MPa,其7d无侧限抗压强度相较于标准养护及纯水养护分别提高16.43%和13.00%,具有明显效果。

关键词：伊犁州黄土土体固化剂养护液固化土配方优化

干燥方式对桑叶枸杞固体饮料品质的影响及其口感优化

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浙江农业学报 2024年第1期36卷 205-214页

作者：陈恒辉王军峰韩延超陈慧芝吴伟杰丁玉庭童川郜海燕浙江工业大学食品科学与工程学院浙江杭州310014 浙江省农业科学院食品科学研究所农产品质量安全危害因子与风险防控国家重点实验室农业农村部果品产后处理重点实验室中国轻工业果蔬保鲜与加工重点实验室浙江省果蔬保鲜与加工技术研究重点实验室浙江杭州310021 缙云县山里人家农产品开发有限公司浙江缙云321400

为研究不同干燥方式对桑叶枸杞固体饮料品质的影响,以桑叶、枸杞为基本原料,通过微波干燥、鼓风干燥和真空冷冻干燥3种方式分别制备桑叶枸杞固体饮料,并检测干燥后粉体的质构、色泽及营养品质变化。从物理性质来看,真空冷冻干燥的粉体... 详细信息

为研究不同干燥方式对桑叶枸杞固体饮料品质的影响,以桑叶、枸杞为基本原料,通过微波干燥、鼓风干燥和真空冷冻干燥3种方式分别制备桑叶枸杞固体饮料,并检测干燥后粉体的质构、色泽及营养品质变化。从物理性质来看,真空冷冻干燥的粉体在稳定性、可压性与均一性上表现较好,鼓风干燥的粉体在堆积性和流动性上相对更好。真空冷冻干燥粉体的总糖含量最高,亮度值最大,湿润下沉时间短。结合吸湿特性与微观结构判断,真空冷冻干燥制备的粉体品质优于其他2种干燥方式。为了改善饮料风味,采用响应面试验进行口感优化,结果表明,当木糖醇添加量为27.30%(质量分数,下同)、甜菊糖苷添加量为3.67%、苹果酸添加量为0.11%时,口感最好。

关键词：干燥方式桑叶枸杞固体饮料

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