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A slippery hydrogel coating with durable oil-repellent property and self-regeneration capacity

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Science China(Technological Sciences) 2022年第8期65卷 1819-1827页

作者： XU Ting GAO ZhongShuai LI FangChao MIAO Gan JIA YuYu MIAO Xiao zhu xiaotao LU JingWei WANG Bo SONG YuanMing REN GuiNa LI XiangMing School of Environmental and Material Engineering Yantai UniversityYantai 264405China Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information TechnologyLiaocheng UniversityLiaocheng 252000China

Traditional lubricant impregnated surfaces usually required fluorinated lubricants to achieve slippery oil repellency, but the lubricants infused were expensive and toxic and also suffered from limited stability because of their migrating, evaporating, and leaking during use. Herein, to address this issue, we fabricated a durably fluorine-free slippery oil-repellent hydrogel coating using water as the lubricant. Due to its enhanced water-binding affinity, water could wet the hydrogel completely and form a hydrated-water layer on the surface. The hydrated water layer could act as a lubricant to repel foreign oils, which allowed the hydrogel to display slippery oil-repellency in air, exhibit superoleophobicity underwater, and resist oil fouling upon oil *** hydrogel kept its oil-repellent properties after mechanical tests as well as thermal and freezing treatments,demonstrating its durability. Thanks to its moisture absorption, the water lubricant layer could self-regenerate upon the lubricated water layer depletion through exposure to a humid environment. Exploiting it is water-attracting and oil repellency, the hydrogel coating was demonstrated as a versatile platform for oil/water separation, polymer/water separation, drag-reduction, and antifogging.

关键词： slippery oil repellency self-regeneration moisture absorbing oil/water separation

凉血解毒汤联合中药熏洗辅助治疗血热型银屑病的效果研究

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中国药物滥用防治杂志 2024年第6期30卷 1122-1125页

作者：丁黎薇王春环袁兆毓朱晓涛林仲琦杨素清佳木斯市中医医院皮肤科黑龙江佳木斯154004 佳木斯市中医医院妇科黑龙江佳木斯154004 佳木斯市中医医院医务科黑龙江佳木斯154004 黑龙江中医药大学附属第一医院皮肤科黑龙江哈尔滨150040

目的:探讨凉血解毒汤联合中药熏洗在血热型银屑病中的应用效果。方法:选取佳木斯市中医医院2020年1月—2021年12月收治的银屑病患者86例,按随机数字表法分为两组,各43例。对照组予以常规西药治疗,观察组加用凉血解毒汤联合中药熏洗治疗... 详细信息

目的:探讨凉血解毒汤联合中药熏洗在血热型银屑病中的应用效果。方法:选取佳木斯市中医医院2020年1月—2021年12月收治的银屑病患者86例,按随机数字表法分为两组,各43例。对照组予以常规西药治疗,观察组加用凉血解毒汤联合中药熏洗治疗,比较两组治疗效果、PASI评分、生活质量、中医症状积分及不良反应发生情况。结果:观察组总有效率为95.35%,高于对照组的79.07%(P0.05)。结论:凉血解毒汤联合中药熏洗可提高血热型银屑病治疗效果,降低PASI评分,改善生活质量,安全可靠。

关键词：银屑病凉血解毒汤中药熏洗炎症因子生活质量

加减清热除湿解毒汤联合耳穴压豆治疗肺胃湿热型痤疮的效果研究

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中国药物滥用防治杂志 2024年第1期30卷 147-150页

目的:探讨清热除湿解毒汤加减联合耳穴压豆治疗肺胃湿热型痤疮的临床效果。方法:选取2019年10月—2021年10月佳木斯市中医医院收治的痤疮患者86例,按随机数字表法分为两组,各43例。对照组予以常规西药治疗,观察组加用清热除湿解毒汤加... 详细信息

目的:探讨清热除湿解毒汤加减联合耳穴压豆治疗肺胃湿热型痤疮的临床效果。方法:选取2019年10月—2021年10月佳木斯市中医医院收治的痤疮患者86例,按随机数字表法分为两组,各43例。对照组予以常规西药治疗,观察组加用清热除湿解毒汤加减联合耳穴压豆治疗,持续用药6周。比较两组临床疗效、皮损症状积分、皮肤状态、生活质量及安全性。结果:观察组总有效率为93.02%,高于对照组的76.74%(P0.05)。结论:清热除湿解毒汤加减联合耳穴压豆可提高肺胃湿热型痤疮疗效,加快皮损消退,减轻对生活质量的影响,安全可靠。

关键词：痤疮清热除湿解毒汤耳穴压豆皮损症状

Epidemiological Characterization of Dengue Fever—Yunnan Province,China,2010-2021

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China CDC weekly 2024年第20期6卷 457-462,I0002-I0007页

作者： Xiaoxiang zhu Songwang Wang Yanfei Li Yu Cao Xuemei Su xiaotao Zhao National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases Chinese Center for Disease Control and PreventionBeijingChina Yunnan Institute of Parasitic Diseases Pu’er CityYunnan ProvinceChina

Objective:The goal of this study is to analyze the epidemiological patterns of dengue fever across different districts and counties in Yunnan Province from 2010 to ***:In this study,we employed joinpoint regression analysis,spatial autocorrelation analysis,and space-time scan analysis to illustrate the spatiotemporal propagation and demographic influence of dengue fever,using both graphical and tabular presentations to clearly demonstrate the ***:Yunnan Province reported 14,098 cases of dengue fever during the period from 2010 to *** these,11,513 cases were caused by local transmission,2,566 were imported internationally,and 19 were inter-provincial *** trends emerged,revealing a surge in incidences during the summer and autumn *** sex ratio of male to female cases was 1:0.88,with a significant majority of 82.00%of cases involving individuals belonging to the age group of *** service workers constituted the most impacted occupational group,forming 20.96%of total cases.A spatio-temporal scan identified significant clustering of dengue fever cases across space and time,with the most pronounced cluster observed in southern Yunnan,primarily between 2015 and ***:Dengue fever in Yunnan Province manifests as biennial outbreaks,underscoring the necessity for increased surveillance,particularly in counties bordering other regions.

关键词： counties district revealing

In situ reduction and functionalization of graphene oxide to improve the tribological behavior of a phenol formaldehyde composite coating

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Friction 2015年第1期3卷 72-81页

作者： Mingming YANG Zhaozhu ZHANG xiaotao zhu Xuehu MEN Guina REN State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesTianshui Road 18thLanzhou 730000China University of Chinese Academy of Sciences Beijing 100039China

The development of a phenol formaldehyde/graphene(PF-graphene)composite coating with high performance is desirable but remains a challenge,because of the ultrahigh surface area and surface inertia of the ***,we synthesized PF-graphene composites by the in situ polymerization of phenol and formaldehyde with the addition of graphene oxide,resulting in improved compatibility between the graphene and phenolic resin(PF)matrix and endowing the phenolic resin with good thermal stability and excellent tribological ***-transform infrared(FTIR)spectra and X-ray diffraction(XRD)patterns demonstrated that the graphene oxide was reduced during the in-situ *** PF-graphene composites were sprayed onto steel blocks to form composite *** effects of an applied load and of the sliding speed on the tribological properties of the PF-graphene composite coating were evaluated using a block-on-ring wear tester;in addition,the worn surface and the transfer film formed on the surface of the counterpart ring were studied by scanning electron microscopy(SEM).The results show that the PF-graphene composite coating exhibited enhanced tribological properties under all tested conditions.

关键词： wear friction graphene phenolic resin

Preparation of PDVB/TiO2 composites and the study on the oil-water separation and degradation performances

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Science China(Technological Sciences) 2019年第7期62卷 1217-1223页

作者： MIAO Xiao HAN Lu WANG Lei WANG Min SUN XiaoHui zhu xiaotao GE Bo Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information Technology Liaocheng University Liaocheng 252000 China Technical Development Center of China National Heavy Duty Truck Group Co. Ltd. Jinan 250101 China School of Materials Science and Engineering Liaocheng University Liaocheng 252000 China School of Environmental and Material Engineering Yantai University Yantai 264450 China

The traditional superhydrophobic materials are not ideal for treating residual pollutants after oil-water separation. In this paper, a simple and economical method was developed for the fabrication of multi-functional superhydrophobic materials PDVBx/TiO2 composites, through in situ polymerization. The performance of the superhydrophobic composite was studied. The results showed that the low surface energy of PDVB2.5/TiO2 composite with the micro-nano scale roughness would result in excellent superhydrophobicity. In addition, the PDVB2.5/TiO2 composite exhibits optimum effect on the degradation of methyl orange(MO) with the degradation efficiency of 97.8%. What is more, the applications of the composite materials could be expanded to other fields, such as the degradation of drug ciprofloxacin hydrochloride(CIP). Finally, we expanded the application of the PDVBx/TiO2 composites to tribology, and found its excellent performance in reducing wear and antiwear.

关键词： superhydrophobic oil-water separation photocatalytic tribology

Fabrication of Bionic Superhydrophobic Manganese Oxide/Polystyrene Nanocomposite Coating

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Journal of Bionic Engineering 2012年第1期9卷 11-17页

作者： Xianghui Xu Zhaozhu Zhang Fang Guo Jin Yang xiaotao zhu Xiaoyan Zhou Qunji Xue State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P. R. China Graduate School Chinese Academy of Sciences Beijing 100039 P. R. China

A superhydrophobic manganese oxide/polystyrene （MnO2/PS） nanocomposite coating was fabricated by a facile spraying process. The mixture solution of MnO2/PS was poured into a spray gun, and then sprayed onto the copper substrate using 0.2 MPa nitrogen gas to construct superhydrophobic coating. The wettability of the composite coating was measured by sessile drop method. When the weight ratio of MnO2 to PS is 0.5：1, the maximum of contact angle （CA）（140°） is obtained at drying temperature of 180 ℃. As the content of MnO2 increases, the maximum of CA （155°） is achieved at 100 ℃. Surface morphologies and chemical composition were analyzed to understand the effect of the content of MnO2 nanorods and the drying temperature on CA. The results show that the wettability of the coating can be controlled by the content of MnO2 nanorods and the drying temperature. Using the proposed method, the thickness of the coating can be controlled by the spraying times. If damaged, the coating can be repaired just by spraying the mixture solution again.

关键词： bionics superhydrophobic surface MnO2 nanorods nanocomposite coating drying temperature

Sliding wear behaviors of Nomex fabric/phenolic composite under dry and water-bathed sliding conditions

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Friction 2014年第3期2卷 264-271页

作者： Guina REN Zhaozhu ZHANG xiaotao zhu Xuehu MEN Wei JIANG Weimin LIU State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesTianshui Road 18thLanzhou 730000PR China University of Chinese Academy of Sciences Beijing 100039PR China

A Nomex fabric/phenolic composite was prepared,and its tribological properties were evaluated under dry and water‐bathed sliding conditions by a pin‐on‐disk *** resulting size of the friction coefficient for the Nomex fabric/phenolic composite in the study occurred in the following order:dry sliding condition>distilled water‐bathed sliding condition>sea water‐bathed sliding *** fabric composite’s wear rate from high to low was as follows:distilled water‐bathed sliding condition>sea water‐bathed sliding condition>dry sliding *** water‐bathed sliding conditions,penetration of water into the cracks accelerated the composite’s invalidation process,resulting in a higher wear *** also found that the extent of corrosion and transfer film formed on the counterpart pin significantly influenced the wear rate of the Nomex fabric *** of the Nomex fabric composite’s wear mechanisms under the sliding conditions investigated is provided on the basis of the characterization results.

关键词： Nomex fabric/phenolic composite friction and wear property dry and water‐bathed sliding condition

An unusual superhydrophilic/superoleophobic sponge for oil-water separation

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Frontiers of Materials Science 2020年第3期14卷 341-350页

作者： Jingwei Lu xiaotao zhu Xiao Miao Bo Wang Yuanming Song Guina Ren Xiangming Li School of Environmental and Materials Engineering Yantai UniversityYantai264405China Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information TechnologyLiaocheng UniversityLiaocheng252000China

Development of porous materials with anti-fouling and remote controllability is highly desired for oil-water separation application yet still challenging. Herein, to address this challenge, a sponge with unusual superhydrophilicity/superoleophobicity and magnetic property was fabricated through a dip-coating process. To exploit its superhydrophilic/superoleophobic property, the obtained sponge was used as a reusable water sorbent scaffold to collect water from bulk oils without absorbing any oil. Owing to its magnetic property, the sponge was manipulated remotely by a magnet without touching it directly during the whole water collection process, which could potentially lower the cost of the water collection process. Apart from acting as a water-absorbing material, the sponge can also be used as affiliation material to separate water from oil-water mixture and oil in water emulsion selectively, when fixed into a cone funnel. This research provides a key addition to the field of oil-water separation materials.

关键词： superhydrophilicity superoleophobicity oil-water separation sponge water collection anti-fouling property