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Simultaneously enhanced interfacial shear strength and tensile strength of heterocyclic aramid fiber by graphene oxide

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Nano Research 2023年第10期16卷 12286-12293页

作者： Ziyi Zhang Xiangzheng Jia Chun Li Lanying Li Yeye Wen Zhenfei Gao Jiangwei Zhang Enlai Gao Kun Jiao Jin Zhang College of Science China University of Petroleum(Beijing)Beijing 102249China Beijing National Laboratory for Molecular Sciences School of Materials Science and EngineeringCollege of Chemistry and Molecular EngineeringBeijing Science and Engineering Center for NanocarbonsPeking UniversityBeijing 100871China Beijing Graphene Institute(BGI) Beijing 100095China Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhan 430072China China Bluestar Chengrand Chemical Co. Ltd.Chengdu 610041China Science Center of Energy Material and Chemistry College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot 010021China

Heterocyclic aramid fibers,a typical kind of high-performance fibers,have been widely used in aerospace and protection fields because of their excellent mechanical ***,the application of heterocyclic aramid fibers as a reinforcement is hindered by the weak interfacial combination with matrix materials,especially *** strategies enhancing the interfacial shear strength(IFSS)usually decrease the tensile ***,simultaneous enhancement of both mechanical properties remains a ***,we report a novel heterocyclic aramid fiber with high interfacial shear strength(49.3 MPa)and tensile strength(6.27 GPa),in which 4,4′-diamino-2′-chlorobenzanilide(DABA-Cl)and a small amount of graphene oxide(GO)are introduced through in-situ *** bonds andπ–πinteraction between GO and polymer chains trigger the enhancement in crystallinity,orientation,and lateral interaction of the fibers,thus improving the tensile strength and interfacial shear strength of the ***,the interfacial interaction between fiber and epoxy is enhanced due to the improvement of the surface polarity of the fibers caused by ***,a method to improve both tensile strength and interfacial shear strength of heterocyclic aramid fibers was found by introducing GO and DABA-Cl,which may provide guidance for the design and preparation of other high-performance fibers.

关键词： heterocyclic aramid fibers graphene oxide(GO) 4 4′-diamino-2′-chlorobenzanilide(DABA-Cl) interfacial shear strength tensile strength

Surface Characteristics of Carbon Fiber and Its interfacial shear strength Measured By Single Fiber Fragmentation Test

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Surface Characteristics of Carbon Fiber and Its Interfacial ...

Influence of processing temperature on interfacial behavior of HKT800 carbon fiber with BMI and epoxy matrices

第十届中日复合材料学术会议

作者： Chen Da Zhao Yan Yang Zhe School of Materials Science and Engineering Beihang University Beijing 100191 China

The single fiber fragmentation test was performed to evaluate interfacial shear strength of carbon fiber/epoxy resin monofilament ***,surface characterization by AFM and XPS was *** was found that the surface topography of the sizing carbon fibers studied appears to consist of grooves along the fiber axial *** increases the roughness of fibers surface by 132.2% and improves chemical activity with higher O/C ***,the samples of sizing fiber show sharp a X-type birefringence in the single fiber fragmentation test,and IFSS of the sizing fiber/epoxy resin monofilament composite is 74.10 MPa,presenting 122% higher than desizing fiber.

关键词： Carbon fiber Surface characterization Single fiber fragmentation test interfacial shear strength

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Chinese Journal of Aeronautics 2015年第4期28卷 1255-1262页

作者： Gao Aijun Gu Yizhuo Wu Qing Yuan Chao Li Min Zhang Zuoguang Key Laboratory of Aerospace Advanced Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beihang University

This paper aims to study the effect of processing temperature on interfacial behavior of HKT800 carbon fiber composites with epoxy and Bismaleimide（BMI） *** to the processing conditions of the composite, various processing-heat treatments were conducted on HKT800 and the extracted sizing content declines with increasing *** analysis shows that the HKT800 sizing is epoxy-type and reactive at 200 *** interfacial shear strength（IFSS） of HKT800/epoxy and HKT800/BMI was investigated by micro-droplet method, for which the composites were fabricated with modeling temperature schemes referring to different diffusion, cure and post-cure *** shows that diffusion temperature and conversion degree of the resin both enhance the interfacial adhesion of HKT800/epoxy *** the HKT800/BMI composite,the diffusion temperature shows a insignificant effect on the *** analysis indicates that sufficient reactions are achieved between HKT800-sizing and epoxy resin, however only partial reactions are observed between the sizing and ***, the presence of the sizing can evidently improve the wettability of HKT800 with epoxy resin but is unfavorable for HKT800 with BMI.

关键词： Bismaleimide Carbon fiber Epoxy interfacial shear strength Temperature scheme

interfacial mechanical property of steel-mushy Al-20Sn bonding

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Journal of University of Science and Technology Beijing 2004年第2期11卷 165-168页

作者： PengZhang YunhuiDu HanwuLiu DabenZeng JianzhongCui LiminBat DepartmentofMechanicalEngineering BeijingJiaotongUniversityBeijing100044China DepartmentofMechanicalEngineering TsinghuaUniversityBeijing100084China MetalFormingDepartment NortheasternUniversityShenyang110006China AnshanAutomobileFittingsFactory Anshan114014China

The bonding of a steel plate to Al-20Sn slurry was conducted using thecasting rolling technique. The surface of the steel plate was defatted, descaled, immersed (inK_2ZrF_6 flux aqueous solution) and stoved. Al-20Sn slurry was prepared using the electromagneticmechanical starring method. The interfacial mechanical property of the bonding plate was researchedto determine the relationship between the diffusion time and the interfacial shear strength. Inorder to identify the mechanism of bonding, the interfacial structure of the bonding plate wasstudied. The results show that at a prebeat temperature of the steel plate of 505 deg C and a solidfraction of Al-20Sn slurry of 35 percent, the relationship between the interfacial shear strength Sand the diffusion time t is S=28.8+4.3t-0.134t^2 +0.0011t^3. When the diffusion time is 22 s, thelargest interfacial shear strength is 70.3 MPa, and the corresponding interface is a new one whichis made up of Fe-Al compound and Fe-Al solid solution alternatively and in a right proportion. Inthis interfacial structure, the interfacial embrittlement does not happen and Fe-Al compound canplay its role in strong combination adequately.

关键词： interfacial shear strength diffusion time interfacial structure

Relationship between interfacial structure and property of steel-mushy Al-28Pb bonding pate

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Journal of Central South University of Technology 2006年第1期13卷 12-16页

作者：张鹏杜云慧刘汉武张君曾大本巴立民 Department of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China Anshan Automobile Fittings Factory Anshan 114014 China

The interfacial properties of steel-mushy Al-28Pb bonding plate with different interfacial structures, and the influence of ratio of Fe-Al compound at the interface on interfacial shear strength were investigated. The results show that there is a nonlinear relationship between the ratio of Fe-Al compound at the interface and the interfacial shear strength. When the ratio of Fe-Al compound at the interface is smaller than 71.4%, with the increase of the ratio of Fe-Al compound at the interface, the interfacial shear strength increases gradually; when the ratio of Fe-Al compound at the interface is larger than 71.4%, with the increase of the ratio of Fe-Al compound at the interface, the interfacial shear strength decreases continuously; when the ratio of Fe-Al compound at the interface is 71.4%, the largest interfacial shear strength 70.2MPa is obtained.

关键词： interfacial structure ratio of Fe-Al compound interfacial shear strength

Study on Single-fiber Pull-out Method for Evaluating interfacial strength in CFRP

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High Technology Letters 1995年第1期1卷 105-108页

作者： Yudong, H. Zhiqian, Zh. Lixun, L. Qiwei, L. Harbin Inst of Technology Harbin China

Single-fiber pull-out testing (SFPOT) methods are frequently used to evaluate the interfacial adhesion between fiber and matrix in composite materials. To make such pull-out measurements, however, the length of embedded fiber must be small enough so that the fiber does not break before it is pulled freely. This is difficult to achieve by conventional methods with fibers of small diameter, such as the carbon fibers. In this paper, a fiber pull-out experiment is described. Specialized apparatus in our laboratory, as well as this technique for sample preparation are discussed in detail. The interfacial shear strength of carbon fiber/resin matrix composites is analyzed quantitatively by using the finite-element method. The SFPOT system has been proved to be an available means for the study of interfacial properties for carbon fiber/resin matrix composites.

关键词： Carbon fiber Composite materials interfacial shear strength Single-fiber pull-out

Study on Mechanical Property in Steel-Aluminum Solid to Liquid Bonding

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Journal of Materials Science & Technology 2003年第2期19卷 149-151页

作者： LizhongZHANC PengZHANG YunhuiDU DabenZENG JianzhongCUI LiminBA DepartmentofMechanicalEngineering NorthernJiaotongUniversityBeijing100044China DepartmentofMechanicalEngineering TsinghuaUniversityBeijing100084China MetalFormingDepartment NortheastenUniversityShenyang110004China AnshanAutomobileFittingsFactory Anshan114014China

The bonding of solid steel plate to liquid Al was conducted using rapid solidification. The influence of thickness of Fe-Al compound layer at the interface on interfacial shear strength of bonding plate was studied. The results show that the relationship between thickness of Fe-AI compound layer and interfacial shear strength is 5=30.4+8.51 h-0.51 h2 +0.007 h3 (where h is thickness of Fe-AI compound layer, S is interfacial shear strength). When thickness of Fe-AI compound layer is 10.7 um, the largest interfacial shear strength is 71.6 MPa.

关键词： Mechanical property Rapid solidification Interface interfacial shear strength

Potential of Thai Bast Fibers for Injection Molded PLA Composites

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Journal of Renewable Materials 2023年第5期11卷 2279-2300页

作者： Nina Graupner Thiprada Poonsawat Koranat Narkpiban Jörg Müssig The Biological Materials Group Department of BiomimeticsHSB-City University of Applied SciencesBremenD-28199Germany Department of Botany Faculty of Liberal Arts and ScienceKasetsart UniversityKamphaeng SaenNakhon Pathom73140Thailand Bioproduct Science Department of ScienceFaculty of Liberal Art and ScienceKasetsart UniversityKamphaeng SaenNakhon Pathom73140Thailand Department of Science and Mathematics Faculty of Science and TechnologyRajamangala University of Technology Tawan-OkChonburi20110Thailand

Thailand has a huge variability of bast fiber plants,some of which have been little researched regarding their applicability in *** fiber(bundle)s from different species were investigated and incorporated into a polylactide(PLA)matrix by injection *** and kenaf were used as well-studied fibers,while roselle,Fryxell and paper mulberry are less extensively *** strength,tensile modulus and interfacial shear strength(IFSS)of single fiber(bundle)s were highest for hemp,followed by kenaf,roselle,Fryxell and paper *** the lower tensile strength and IFSS of paper mulberry,the highest tensile strength was achieved for the paper mulberry/PLA composite followed by hemp/*** electron microscope(SEM)analyses showed that the single cells in paper mulberry fiber bundles,in contrast to the other fiber types investigated,were only partially bonded to each other,which explains the lower strength of the fiber *** higher aspect ratio of fiber(bundle)s of paper mulberry in the PLA composite can explain the good composite *** from hemp,paper mulberry shows the best reinforcing effect in the PLA matrix and offers interesting potential for composite *** to neat PLA,the tensile strength could be increased by 24%and the tensile modulus by 54%.

关键词： Mechanical properties interfacial shear strength aspect ratio roselle Fryxell paper mulberry

Influence of diffusion time on property of steel-aluminum solid to liquid bonding

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Journal of University of Science and Technology Beijing 2002年第6期9卷 444-447页

作者： PengZhang DabenZeng 等 DepartmentofMechanicalEngineering NorthernJiaotongUniversityBeijing100044China DepartmentofMechanicalEngineering TsinghuaUniversityBeijing100084China

The bonding of solid steel to liquid aluminum was conducted using rapidsolidification. The influence of diffusion time on interfacial shear strength was studied. Theresults show that when the temperature of aluminum liquid is 700℃ and the preheat temperature ofsteel plate is 250℃, the relationship between diffusion time (t) and interfacial shear strength(σ) is σ =15.1+8.14t-037t^2 +0.005t^3, and the maximum interfacial shear strength is 71.1 MPa.

关键词： diffusion time rapid solidification interfacial shear strength