POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 4
·e6363
·
IF 3.1
Ke Xu,Shengxin Guan,Jianguang Xu,Lin Xia,Zhaoge Huang
The aim of this study is to broaden the potential applications of polyphenylene sulfide (PPS) by incorporating graphene oxide (GO)-grafted glass fiber (GF) to enhance the mechanical properties of liquid crystal polymer (LCP)/PPS composites. The surface of GF was modified using γ-Aminopropyltriethoxysilane (KH550), allowing for the grafting of GO. Subsequently, GO-GF/LCP/PPS composites were prepared through extrusion injection molding. The properties of the composites were evaluated using scanning electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. The findings indicate that the interfacial adhesion between GF and composites is significantly improved with the addition of GO, The mass fractions of GO used were 0.1%, 0.5%, and 0.7%. The incorporation of GO-grafted GF proves to be an effective approach in enhancing the tensile and flexural strengths of LCP/PPS composites. Additionally, a reduction in wear volume and tribological coefficient is observed compared to composites without GO-treated GF. Notably, when the GO content is 0.5 wt%, the mechanical properties of the composites show significant improvement, with a 50% increase in impact strength compared to the composite without GO, and a decrease in friction coefficient from 0.28 to 0.22.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 124
·102167-102172
·
IF 3.84
Zhenxing Cao,Rongguo Wang,Fan Yang,Lifeng Hao,Weicheng Jiao,Wenbo Liu,Qi Wang,Boyu Zhang
The formation of microcracks especially in the interfacial region is a critical problem for fiber reinforced composites. Repairing the microcracks before catastrophic failure of the materials takes place is a promising solution to achieve long lifetime operation. In this context, a novel method is demonstrated for interfacial healing of glass fiber reinforced composites using the photothermal effect of gold nanoparticles (Au NPs). Au NPs were successfully dispersed into the interfacial region of a glass fiber reinforced composite. Once the interfacial damage occurred, a laser could be used to illuminate Au NPs to generate a large amount of heat through the photothermal effect. This would melt the resin and form mechanical interlocking between the fiber and PMMA to create a new interface. It has been confirmed by a micro bond test that the composite containing Au NPs has healing ability with a maximum healing efficiency of 98.5% under optimized conditions. The mechanism of the interfacial healing was also investigated and it is found that the density of Au NPs and irradiation intensity play key roles in the healing process.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 4
·287
·
IF 4.3
Ji Wang,Guolong Wang,Zhenkai Zhu,Wenwu Zhang
A method of femtosecond laser multi-pulse grid-like point etching (MP-GPE) was used to prepare glass fiber reinforced plastics with superhydrophobic properties. This article investigates the influence trend of single-pulse energy (5–35 μJ) and etching pulse number (20–100) on the morphology of surface concave holes, including depth and width. Different combinations of process parameters have a modulating effect on the size of the concave hole structure and the ablation of the reinforced plastics. At a single-pulse energy of 25 μJ and 60 pulse numbers, the depth of the concave holes increases to the maximum of approximately 63 μm, and the width of the upper surface of the concave holes is approximately 33 μm. Under these conditions, the maximum water contact angle of 160.6° is obtained, which is consistent with the theoretical calculation results of 161.6°. This is very promising for the power industry to use this material in low-temperature, drag-reducing environments.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Innocent Toendepi,Hongbo Dai,Wei Liu,Yaofeng Zhu
The attainment of both high mechanical strength and good toughness has always been the ultimate goal for developing viable fiber-reinforced thermoplastic composites for critical structural applications in the aerospace and automobile fields. Most sized glass fiber reinforced polypropylene composites exhibit higher tensile and flexural strengths but lower impact resistance than commercial glass fiber reinforced polypropylene composites, which limits their future utilization in industry. In this work, an amphiphilic sizing agent as the interfacial modifier and a β-nucleating agent as the added toughener were simultaneously used to improve the mechanical properties of short glass fiber reinforced polypropylene composites and addition of a β-nucleating agent improved the impact resistance of the sized glass fiber reinforced polypropylene composite without degrading the tensile and flexural strengths. Additionally, polarized light microscope and differential scanning calorimetry demonstrated that the improved mechanical properties of the composites were attributed to the improved compatibility between glass fibers and polypropylene and the enhanced crystallization ability of polypropylene. Thus, the proposed method provides a way to balance the strength and toughness of composites.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2017
·
IF 2.764
Yu Gao,Wuzhu Sun,Weiyi Yang,Qi Li
Palladium nanoparticles were deposited on the amine-grafted glass fiber mat (GFM-NH 2 ) catalyst support by a conventional impregnation process followed by the borohydride reduction in aqueous solution at room temperature to create the designed Pd/GFM-NH 2 catalyst. By the use of large size glass fiber mat without nano/mesopores as the catalyst support, the internal mass transfer limitations due to the existence of nano/mesopores on the catalyst support were eliminated and the Pd/GFM-NH 2 catalyst could be easily separated from treated water due to the large size of the catalyst support. Batch experiments demonstrate its good catalytic reduction performance of Cr(VI) with formic acid as the reducing agent. It also demonstrated an efficient Cr(VI) removal and stability in a lab-prepared, packed fixed-bed tube reactor for the continuous treatment of Cr(VI)-containing water. Thus, it has a good potential for the catalytic reduction of Cr(VI) in the water treatment practice.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2020
·Vol. 44
·期 11
·9166-9176
·
IF 3.741
Qifan Liu,Jianhui Qiu,Chao Yang,Limin Zang,Guohong Zhang,Eiichi Sakai
Summary Textile-based flexible supercapacitors have various desirable advantages in practical applications due to their excellent flexibility, ease of large-scale production, and low cost. In this study, a flexible supercapacitor was designed and fabricated using a two-step polymerization method based on fiberglass cloth and unique morphology of polypyrrole (PPy). In this extraordinary nanostructure, not only do PPy tentacles provide high-speed channels for the transfer of electron and ion, but they also create a larger specific surface area, thus enhancing the energy storage. The fabricated PPy/CFC supercapacitor possesses an excellent area-specific capacitance of 549.6 mF cm −2 and a remarkable energy density of 48.85 μWh cm −2 . Besides, it achieves the high capacitance retention of 92.4% after 10 000 charge and discharge cycles and 96.08% after 1000 bending cycles. Furthermore, it is demonstrated that the PPy/CFC supercapacitor is capable of ensuring a stable power supply for practical applications by driving an LCD electronic watch. The fiberglass cloth-based supercapacitors with PPy tentacles provide a new approach to the practical applications of wearable power supplies.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 4
·期 4
·1048-1058
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IF 5.693
Chen Fang,Xiao Hua,Peng Zhong Quan,Zhang Ze Ping,Rong Min Zhi,Zhang Ming Qiu
To tackle the challenges of insufficient heat conduction capacity and thermally/mechanically induced internal damages of glass fiber reinforced epoxy composite (that traditionally serves as circuit board substrate), hexagonal boron nitride (h-BN) was functionalized using natural flavonoid dihydromyricetin (DMY) and then compounded with reversible Diels–Alder (DA) bonds crosslinked epoxy and glass fiber cloth (GFC) reinforcement to fabricate self-healing thermally conductive glass fiber cloth reinforced epoxy (GFREP) composite by a facile two-step coating method. Particularly, the GFC was coated with the solution containing high concentration modified h-BN, and then impregnated with dip coating solution containing lower concentration h-BN. The gradient variation of modified h-BN concentration not only effectively reduced the interfacial heat resistance, but also avoided excessive deterioration of mechanical strength. The produced GFREP composite exhibited excellent in-plane (6.22 W m −1 K −1 ) and through-plane (1.53 W m −1 K −1 ) thermal conductivities at 35.0 wt% h-BN content. The reversible DA reaction helped to realize interlaminar crack healing of the composite as characterized by high degrees of recovery of mechanical strength (70 ~ 85%) and thermal conductivities (62 ~ 89%). Besides, the attenuated thermal conductivity caused by interfacial debonding between copper clad and the composite in the model copper clad laminates can also be restored via the same mechanism. Lastly, the composite laminates proved to be coupled with controlled degradability in good solvent so that they can be recycled. This study offered an efficient way to prolong the service life of thermally conductive GFREP composite for integrated circuit packaging applications. Graphical abstract The reversible DA reaction at the crack interface proves to be able to recover the structural integrity, which pushes the physical reconnection of the separated h-BN micron sheets residing on the fractured surfaces at the same time and re-establishes the continuous phonon transfer pathways.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPUTATIONAL MATERIALS SCIENCE
·
2020
·
IF 2.863
Lei Pan,Huaxin Guo,Lang Zhong,Menglin Wang,Pengbo Xue,Xiaosa Yuan
In this paper, molecular dynamics (MD) simulations are carried out to explore the influence of surface modification of glass fiber on interfacial binding energy and failure behavior of GF/PEEK composites. The silane coupling agent and sulfonated PEEK (SPEEK) are employed to modify the surface of glass fibers (GF), and the results reveal that the SPEEK can be employed as an adhesive sizing agent to improve the interfacial bonding strength of GF/PEEK composites. In addition, the synergistic mechanism of non-bonding and mechanical interlocking is investigated by using MD simulations. The interface shear simulation results demonstrate that the interfacial shear strength of composite increased and more resin molecules are found on the surface after SPEEK is incorporated into the GF surface. Moreover, compared with surface-untreated short GF-reinforced PEEK composite, the experimental results demonstrate that the tensile and bending strength of SGF/PEEK composite are improved after interface modification with SPEEK by 21.4% and 30.2%, respectively. The current study presents the utilization of MD simulation for interface design to enhance the mechanical properties of fiber-reinforced PEEK composites.
研究领域:
材料科学
·
计算力学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2016
·
IF 4.312
Peng Sun,Ruiyang Xue,Wang Zhang,Imran Zada,Qinglei Liu,Jiajun Gu,Huilan Su,Zhijian Zhang,Jianzhong Zhang,Di Zhang
Herein TiO 2 coated on glass fiber cloth (TiO 2 /glass fiber cloth, TGFC) was synthesised by sol-gel method. We demonstrated the property about TGFC of photocatalytic decomposition of organic pollutants under ultraviolet-visible (UV–vis) light and sunlight. Glass fiber cloth (GFC) was chosen as the support of TiO 2 in order to improve the practical applications for water purification . TGFC-1–6 were characterized by ERSEM, XRD and XPS. Photocatalytic decomposition of crystal violet (CV) was carried out to investigate the photocatalytic activity of TGFC. The efficiency of TGFC-3 was the best. And its photocatalytic decomposition rate of the second to fifth cycle was higher than the first cycle. The photocatalytic decomposition rate of TGFC-3 was 85% under sunlight from 8:00–14:00. We could design and regulate the shape of TGFC and estimate the area, weight and thickness of TiO 2 , more easily than glass fibers. TGFC is suitable for photocatalytic decomposition of organic pollutants in the water, especially to be fixed in sewage treatment pool and reused.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2022
·
IF 6.137
Bin Gou,Congzhen Xie,Huasong Xu,Rui Wang,Jiangang Zhou,Licheng Li
Glass fibre reinforced polymer composite with excellent comprehensive properties are extensive demanded in power industry attributed to the development of power equipment reliability. However, how to realize the synergistic control of mechanical, insulating and thermal properties of composites in industry needs further exploration. Herein, glass fibre reinforced polymer with high thermal conductivity , excellent mechanical and breakdown strength has been successfully prepared based on a highly scalable ‘nanofillers self-assembling’ method. Boron nitride nanosheets modified via diazo coupling were introduced as the self-assembled layer of glass fibre to improve the insulation properties of the composite. By adjusting the number of self-assembly layers, the synergistic improvement of composite properties is realized. Specifically, the flexural and tensile strengths of the modified composites reached 379.45 and 303.49 MPa, respectively, about 16.95% and 23.47% higher than untreated sample. Moreover, the breakdown strength of self-assembled composites has been promoted by 7.02 and 26.51% compared with untreated one and the sample reinforced by polydopamine modified glass fibres. Simultaneously, thermal conductivity of modified composites has been enhanced from 0.31 to 2.12 W/(m·K) due to highly thermally conductive boron nitride nanosheet and the transport process of organic semiconductor carriers and phonons . Therefore, this work provides a feasible method for the preparation of composites with high comprehensive properties, and provides a reference for the preparation of reliable power equipment.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Lili Ma,Hui Liu,Xin Wen,Karolina Szymańska,Ewa Mijowska,Chuncheng Hao,Tao Tang,Qingquan Lei
It is still a great challenge to develop epoxy resin/glass fabric (EP/GF) composites with well-balanced enhancements on flame retardancy and mechanical properties . Herein, a novel strategy that polyhydric SiO 2 coating assistant to graft organophosphorus (DOPO) onto GF was developed for simultaneously improving flame retardancy and mechanical properties of EP composites. The grafting amount of DOPO could reach to 43.64 wt% via the helpful bridging of polyhydric SiO 2 , so that EP composites displayed excellent flame retardancy with the LOI of 37.2%, the V0 rating on UL-94 and a 63.3% decrease on PHRR in cone calorimeter test. According to the analysis of char morphology and structure, the flame retarded mechanism was mainly ascribed to the enhanced barrier effect of a continuous and intergrow char layer, which was composed of GF@SiO 2 as framework and P-containing condensed carbon as stuffing. Meanwhile, EP composites exhibited outstanding mechanical performances with 35% and 60% increases on tensile strength and impact strength respectively, which resulted from the special molecular structure of GF@SiO 2 - g -DOPO with strong interfacial adhesion with EP chains via hydrogen bond and chemical bond. In summary, this work will be favorable to design multifunctional polymer composites with well-balanced comprehensive performances, and expand their widespread applications in high-end fields.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2021
·
IF 9.078
Hua Xiao,Fang Chen,Ze Ping Zhang,Min Zhi Rong,Ming Qiu Zhang
In this paper, a novel non-covalent treatment method for the micron-sheets of inert hexagonal boron nitride (h-BN) was proposed by using natural flavonoid dihydromyricetin as modifier. The modified micro-sheets were further applied to fabricate thermally conductive glass fiber cloth reinforced epoxy (GFREP) composites. Specifically, the mixture of high concentration h-BN, acrylate copolymer and epoxy monomers were firstly coated on glass fiber cloth (GFC) to construct in-plane thermally conductive layer, and reduce the interfacial heat resistance between GFC and epoxy matrix . Afterwards, lower concentration h-BN was compounded with epoxy matrix, which provided through-plane thermal conductive paths and avoided excessive deterioration of mechanical properties . The produced GFREP composite exhibited high tensile strength retention (78.1%), excellent in-plane (2.36 W m −1 K −1 ) and through-plane (0.76 W m −1 K −1 ) thermal conductivity at 29.6 wt% h-BN content. This study offered an efficient way to develop high-performance GFREP composites with prominent thermal conductivity for integrated circuit packaging applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）