检索结果-南通市图书馆

Tailoring surface features and pore structure by carbon spiral fibers to construct the high-strength carbon foams for the fast and cyclic photo-thermal oil absorption

引用

Journal of Materials Science & Technology 2023年第19期150卷 190-200页

作者： Shaohua Shi Yulin Tang Guizhen Wang Jinchuan Zhao Gengping Wan Lihong Wu Jieping Wang Chul B.Park Guilong Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinanShandong 250061China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan UniversityHaikouHainan 570228China Microcellular Plastics Manufacturing Laboratory Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoOntario M5S3G8Canada

Two key limitations affecting the commercial application of carbon foams for fast clean-up of varied oils are the complex synthesis process and poor mechanical *** this work,an effective method is reported to fabricate the efficient oil-absorbing materials(CSF@MCF)of carbon spiral fibers(CSFs)anchored on melamine carbon foam(MCF)with superior mechanical properties and excellent photothermal *** interwoven CSFs can not only provide extra rigidity but also reduce the stress concentration of the carbon skeleton,which greatly improves the mechanical properties with 6.3 times maximum compression stress and 4.5 times ultimate tensile strength than *** addition,the pure carbon component can reduce the interface resistance and excite the free electrons more easily,thus realizing high-efficiency photothermal conversion in a wide range of *** light irradiation,the CSF@MCF can be quickly heated up to 70℃and achieve ultra-high absorption of crude oil,up to 62 g g_(-1),due to its low density and large absorption ***,the CSF@MCF exhibits impressive absorption stability with persistent superhydrophobicity and a high recovery efficiency of over 85%.Superadding its simple preparation process,low production cost,and excellent acid-alkali resistance,the CSF@MCF shows great commercial potential for effectively absorbing varied oils.

关键词： Carbon spiral fiber Melamine carbon foam Mechanical enhancement Photothermal conversion oil absorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Electrical Conductivity,oil absorption and Electric Heating of Carbon Black-modified Carbon Nanofibers

引用

Chemical Research in Chinese Universities 2021年第3期37卷 541-548页

作者： HUANG Hedong GUO Zeyu YANG Pengyan CHEN Peng Wu Jie College of Materials Science and Art Design Inner Mongolia Agricultural UniversityHohhot010018P.R.China Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization Inner Mongolia Agricultural UniversityHohhot010018P.R.China

Carbon-black-modified carbon nanofibers were prepared by electrospinning,and the effects of the carbon black content and processing temperature on the physical and chemical properties of the resulting composites were *** results showed that the conductivity of carbon-black-modified nanofibers increased with the carbon black *** addition of carbon black in a 20%mass ratio increased the conductivity of the composite(0.75 S/cm)by 230%compared with the undoped nano-fiber(2.47 S/cm),while the adulteration with 5%CB allowed the preservation of the mechanical properties of the *** fabricated carbon-black/carbon-nanocomposite fibers exhibited excellent oil absorption and electrothermal conversion ***,the conductivity and oil absorption capacity increased with increasing carbonization *** a carbonization temperature of 1000℃(5%carbon black),the voltage was 31 V,the current was 0.66 A,and the surface temperature of the composite reached 234.1℃.The overall enhancement in physical properties upon the addition of even low amounts of carbon black makes these composites advantageous for future industrial applications.

关键词： Carbon black Carbon nanofiber Electrospinning Conductivity oil absorption Electric heating film

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Thermal stability and oil absorption of aluminum hydroxide treated by dry modification with phosphoric acid

引用

Journal of Central South University of Technology 2007年第6期14卷 779-782页

作者：周向阳李昌林霍登伟李劼伍上元刘业翔 School of Metallurgical Science and Engineering Central South University

The dry modification of aluminum hydroxide powders with phosphoric acid and the effects of modification of technological conditions on thermal stability, morphology and oil absorption of aluminum hydroxide powders were investigated. The results show that the increase of mass ratio of phosphoric acid to aluminum hydroxide, the decrease of mass concentration of phosphoric acid and prolongation of mixing time are favorable to the improvement of thermal stability of aluminum hydroxide; when the mass ratio of phosphoric acid to aluminum hydroxide is 5:100, the mass concentration of phosphoric acid is 200 g/L and the mixing time is 10 min, the initial temperature of loss of crystal water in aluminum hydroxide rises from about 192.10 to 208.66 ℃, but the dry modification results in the appearance of agglomeration and macro-aggregate in the modified powders, and the oil absorption of modified powders becomes higher than that of original aluminum hydroxide.

关键词： aluminum hydroxide phosphoric acid thermal stability oil absorption dry modification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Large scale fabrication of graphene for oil and organic solvent absorption

引用

Progress in Natural Science:Materials International 2016年第3期26卷 319-323页

作者： Chenxi Fu Zifeng Wang Junyi Liu Hongbo Jiang Guangming Li Chunyi Zhi Department of Physics and Materials Science City University of Hong Kong School of Mechanical Electrical & Information Engineering Shandong University

A simple method for synthesizing highly wrinkled and less layered structure of graphene sheets by using a mechano-thermal exfoliation method was developed. During this process, graphite and ammonium chloride（NH;Cl） powders were loaded by milling and followed with heating at a quartz tube under a nitrogen gas flow. The method is facile and easy for scaling up. Consequently, such microstructure merits of structure endowed graphene super strong adsorption ability, which should have great potential for water purification and treatment.

关键词： Graphene Ball-milling oil absorption

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The superhydrophobic sponge decorated with Ni-Co double layered oxides with thiol modification for continuous oil/water separation

引用

Chinese Journal of Chemical Engineering 2023年第2期54卷 296-305页

作者： Xiaodong Yang Na Yang Ziqiang Gong Feifei Peng Bin Jiang Yongli Sun Luhong Zhang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

In this paper, the superhydrophobic polyurethane sponge(SS-PU) was facilely fabricated by etching with Jones reagent to bind the nanoparticles of Ni-Co double layered oxides(LDOs) on the surface, and following modification with n-dodecyl mercaptan(DDT). This method provides a new strategy to fabricate superhydrophobic PU sponge with a water contact angle of 157° for absorbing oil with low cost and in large scale. It exhibits the strong absorption capacity and highly selective characteristic for various kinds of oils which can be recycled by simple squeezing. Besides, the as-prepared sponge can deal with the floating and underwater oils, indicating its application value in handling oil spills and domestic oily wastewater. The good self-cleaning ability shows the potential to clear the pollutants due to the ultralow adhesion to water. Especially, the most important point is that the superhydrophobic sponge can continuously and effectively separate the oil/water mixture against the condition of turbulent disturbance by using our designed device system, which exhibit its good superhydrophobicity, strong ***, the SS-PU still maintained stable absorption performance after 150 cycle tests without losing capacity obviously, showing excellent durability in long-term operation and significant potential as an efficient absorbent in large-scale dispose of oily water.

关键词： Superhydrophobic sponge Ni-Co double layered oxides Thiol modification oil absorption oil/water separation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhanced Mechanical Properties of Poly(arylene sulfide sulfone)Membrane by Co-electrospinning with Poly(m-xylene adipamide)

引用

Chinese Journal of Polymer Science 2020年第1期38卷 63-71,I0007页

作者： Lu Chen Xin-Lin Tuo Xi-Chuan Fan Chun-Jie Xie Bao-Hua Guo Jian Yu Ping Hu Zhao-Xia Guo Key Laboratory of Advanced Materials (Ministry of Education) Department of Chemical Engineering Tsinghua University

The mechanical properties of poly(arylene sulfide sulfone)(PASS) electrospun membrane were significantly enhanced by coelectrospinning with semi-aromatic nylon poly(m-xylene adipamide)(MXD6), another engineering plastic with high thermal stability and good mechanical properties. The tensile strength of PASS membrane increased with increased incorporation of MXD6, and was tripled when 20%MXD6 was incorporated. The mechanism of the mechanical property improvement is the existence of hydrogen bonding interaction between PASS and MXD6 and between adjacent fibers at the intersections. Thermal properties of the PASS/MXD6 membranes were evaluated by differential scanning calorimetry(DSC) and thermogravimetric analysis(TGA), which showed that the membranes could be stably utilized up to180 °C without any change in appearance and without decomposition. Contact angle measurements of all the membranes showed hydrophobic character. To demonstrate the potential applications of PASS/MXD6 blend membranes, their oil absorption capacities were evaluated with three oils of different viscosities, which proved that the PASS/MXD6 membranes are better absorbents than commercial non-woven polypropylene fibers. Therefore, PASS/MXD6 fibrous membranes produced by electrospinning have a great potential in practical applications.

关键词： Electrospinning Mechanical properties PASS MXD6 oil absorption

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Downy feather-like para-aramid fibers and nonwovens with enhanced absorbency,air filtration and thermal insulation performances

引用

Nano Research 2022年第6期15卷 5695-5704页

作者： Kangli Xu Jixia Deng Guangliang Tian Lei Zhan Jiajia Ma Lijun Wang Qinfei Ke Chen Huang Engineering Research Center of Technical Textiles Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China Changshu Weicheng Nonwoven Equipment Co. Ltd.Suzhou215539China

Fiber morphology with off-standing branches,as found in nature,e.g.,in goose downy feather,provides exquisite functions that can be barely achieved by man-made fiber *** this work,we develop a simple and scalable method for generating downy feather-like para-aramid fibers and *** treating commercial para-aramid microfibers with mild alkaline solution(low concentration of NaOH),a synergistic effect of chemical hydrolysis and physical shearing is successfully triggered to generate abundant nanofiber branches on the surface of para-aramid *** compared with conventional monotonous structures,nonwovens composed of downy feather-like fibers exhibit a typical multiscale fiber morphology,larger specific surface area and smaller pore size,thus showing enhanced particles adsorption capacity(over twice of the pristine nonwoven),excellent oil absorption capacity(increased by~50%),improved air filtration performances(doubled the filtration efficiency)and effective thermal insulation(thermal conductivity=26.1 mW·m^(−1)·K^(−1)).More attractively,the intrinsic flame-retardant nature of para-aramid is well inherited by the downy feather-like fibers,and the fabrication process requires neither sophisticated equipment,nor tedious procedures,making us believe the strong competitiveness of these fibers and assemblies.

关键词： downy feather-like fibers nanofibrils para-aramid nonwoven surface fibrillation oil absorption air filtration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Porous Structures of C‑Shaped Polypropylene Fibers and oil‑Absorbing Performance of Their Spun‑Bond Non‑woven Fabrics

引用

Advanced Fiber Materials 2024年第4期6卷 1092-1107页

作者： Zheng Li Guojun Jiang Yawen Zhao Hanyue Kang Zhiling Chen Mingyu Zhao Zhijuan Sun Congjie Gao Lixin Xue Center for Membrane Separation and Water Science&Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China Zhijiang College Zhejiang University of TechnologyShaoxing 312000China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035China Institute of New Materials&Industrial Technologies Wenzhou UniversityWenzhou 325024China

Spun-bond non-woven fabrics(NWFs)made of porous C-shaped polypropylene fibers were applied in rapid oil absorption and effective on-line oil spillage *** is of great interest to further optimize the absorption properties of these materials by tuning their preparation parameters as well as characterize them with theoretical *** this paper,effects of die shape,diluent composition(mixtures of dibutyl and dioctyl phthalate),and drawing speed on their porous structure and oil-absorbing performance were systematically investigated and characterized based on two novel concepts,i.e.,the equivalent capillary tube pore radius and the kinetic pore tortuosity(barrier to access)derived from the simplest capillary tube liquid-filling *** use of higher dibutyl phthalate fractions under faster drawing speeds resulted in the formation of larger and more connected inner filament sub-micron *** stages of tube filling relating to inter-filament large pores,medium pores close to bonding points,and inner filament small pores were observed in the spun-bond *** oil recovery rates of 986 L·m^(-2)·h^(-1) with an oil/water selectivity of 6.4 were achieved in dynamic skimming experiments using simulated spilled oil.

关键词： Diluent composition TIPS process Shaped fiber Pore structure oil absorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

纳米Ag/Ag2O修饰的天然竹纤维及其油水分离性能研究

纳米Ag/Ag2O修饰的天然竹纤维及其油水分离性能研究

引用

中国化学会第29届学术年会

作者：王雅茹张伟卢灿辉高分子材料工程国家重点实验室四川大学高分子研究所

纤维素纤维具有高强度,低密度,柔软隔热,多孔及可控渗透性[1]等优异性能,使其广泛应用于建筑,造纸,纺织,医药,食品工程等多个领域。但由于其分子链上含有大量羟基而造成较强的亲水性,限制了其进一步应用[2]。本文以疏水的荷叶表面作为... 详细信息

纤维素纤维具有高强度,低密度,柔软隔热,多孔及可控渗透性[1]等优异性能,使其广泛应用于建筑,造纸,纺织,医药,食品工程等多个领域。但由于其分子链上含有大量羟基而造成较强的亲水性,限制了其进一步应用[2]。本文以疏水的荷叶表面作为仿生参考模型,将纳米Ag/Ag2O原位生长于毛竹纤维表面,制得高度疏水的纤维素多孔膜材料。采用该法代替有毒的氟化物[3]进行疏水改性,在材料表面引入纳米粗糙结构,同时兼具抗菌环保的功效。SEM表明Ag/Ag2O纳米微球均匀分布于纤维表面,构建了类似于荷叶表面的乳突结构。这种特殊的结构能够截留空气气垫,使液滴悬浮于其上端[4],从而使纤维膜转变为高度疏水的材料。其水接触角为140°,而二碘甲烷接触角为90°,并被迅速吸收（＜100ms）。当浸入水中时,该多孔膜与水之间会形成空气界面并产生光学镜面反射现象。此外,该材料还能有效吸收水表面及水下的油性物质（图1）,有望应用于水环境修复,水上承重（载物）,油水分离等方面。

关键词： Highly water repellence Bamboo cellulose fibers Porous membrane oil absorption

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：