COMPOSITES SCIENCE AND TECHNOLOGY
·
2018
·
IF 5.16
Xin Huang,Zhong Huang,Jian-Cheng Lai,Lei Li,Guang-Cheng Yang,Cheng-Hui Li
Polymer-bonded explosives (PBXs) are often subjected to different external environmental conditions with various temperature and humidity during long-term storage, transportation, and usage process. The change in temperature and humidity will result in PBXs cracks formation and cause higher risk of explosion evolution when undergoing various stimulus including impact or friction. Herein, a self-healing polymer binder is developed to solve this problem. The fluoropolymer gel binder, a PVDF-co-HFP (copolymer of CH 2 -CF 2 and CF 2 -CF(CF 3 ))/EMIOTf (1-ethyl-3-methylimidazolium trifluoromethanesulfonate)/graphene ternary composite, has high density, high thermal conductivity , excellent interfacial adhesion property, and exhibits self-healing ability at room temperature. Highly filled PBXs composites with 95% of explosive 2, 6-diamino-3, 5-dinitropyrazine-1-oxide (LLM-105) and 5% of ternary composite are fabricated. The as-prepared PBX samples have high denotation parameter (7800 m s −1 ), low impact sensitivities (11–12 J), and low friction sensitivity (no sparks was observed even at friction energy load of 0.36 N). More importantly, our PBXs have effective crack healing ability within 48 h at room temperature. Therefore, the stability and safety of PBXs are improved through the self-healing polymer binder. Such PBXs can find widespread application in various military and civil fields.
研究领域:
材料科学
·
爆炸物工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Qiangqiang Zhao,Dachang Liu,Zhipeng Li,Bingqian Zhang,Xiuhong Sun,Zhipeng Shao,Chen Chen,Xiao Wang,Lianzheng Hao,Xianzhao Wang,Caiyun Gao,Yimeng Li,Panyu Chen,Xiaoxu Zhang,Shuping Pang,Guanglei Cui,Li Wang
The material and microstructure of the carrier-selective layers in the perovskite solar cells are important to determining their efficiency and stability. Planar SnO 2 is the most commonly used inorganic electron transport layer, but there are few reports of its mesoporous structure because of the degradation of hole-blocking property after high temperature sintering. Here, the chemical bath deposition method was optimized to realize low-temperature in-situ deposition of mesoporous SnO 2 layer on FTO substrates. On one hand, the increased interface contact area improves electron injection from the perovskite layer to the SnO 2 , yielding an impressive increase of the power conversion efficiency from 22.09% to 24.11%. And on the other hand, thanks to the increased mechanical strength of the interface, the device with mesoporous SnO 2 retains 90% of its initial power conversion efficiency after 1000 h operation under continuous one-sun illumination.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Bo Zhang,Tianze Liang,Xiaoming Shao,Ming Tian,Nanying Ning,Liqun Zhang,Wencai Wang
A method of nondestructive grafting of zinc oxide onto a fiber surface followed by silane grafting was demonstrated. We used tannic acid and polyethyleneimine to form functional surfaces onto aramid fibers, which can form chemical bonds with zinc oxide. Through in situ hydrothermal reductions, zinc oxide nanowires are uniformly grown onto aramid fibers. A polysulfide functionalized silane was then grafted, which can covulcanize with a rubber matrix. The interfacial adhesion between the modified fibers and rubber has an increase of 57.0%, compared with untreated aramid fibers, which demonstrated that the grafting of zinc oxide nanowires and the grafting of silane can play a combination effect on improving the interfacial adhesion. The results suggested that the growth process of zinc oxide nanowires has almost no effect on the breaking strength of aramid fibers.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yanwen Lin,Tong Li,Senyun Liu,Qiao Shi,Ke Xu,Zhisen Zhang,Jianyang Wu
Understanding the interfacial mechanical properties between hydrate and solids is vital to designing and fabricating surfaces for hydrate management. Herein, the role of the surface wettability, the type of solid substrate and temperature on the interfacial adhesion properties of tetrahydrofuran (THF) hydrate and ice were examined by force analysis based shearing measurements and molecular dynamics (MD) simulations. The results showed that the adhesion strength of THF hydrate and ice on silica varies with the compositions of coating, and the adhesion strength of ice is larger than that of THF hydrate for all investigated solid substrates. Particularly, in contrast to a linear relationship between 1 + co sθ r and hydrate adhesion on organic silanes/thiols/polymer surfaces, the hydrate adhesion on the coated inorganic glass surfaces is enhanced as a function of 1 + cos θ r , in which θ r is the receding contact angle. MD simulations uncovered that the adhesion strength of ice on solid substrates is dominated by the quasi-liquid water layer, however, that of hydrate is governed not only by the quasi-liquid layer but also newly formed unconventional clathrate cages. This study provides new insights and perspectives into the hydrate adhesion on solid surfaces, which is of help to develop hydrate-phobic coatings for advanced hydrate management.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Yu Tan,Huan Chen,Wenbing Kang,Xu Wang
Dry ion-conducting elastomers possess superior reliability in soft ionotronic devices when compared to ion-conducting gels that suffer from liquid evaporation or leakage issues. Recent works have shown that bottlebrush architecture can effectively reduce structural relaxation time so that the bottlebrush polymers have concentrated charge carriers and high chain mobility that result in good ionic conductivity and mechanical flexibility. Here, we report a novel and versatile light-mediated strategy for synthesizing dry ion-conducting elastomers with dynamic bottlebrush network structures. The obtained dry ion-conducting dynamic bottlebrush networks (DICDBNs) are colorless and highly transparent and can be simply patterned. We systematically investigate the influence of the number and length of the side chains in the DICDBNs on the physicochemical properties of the resultant materials and find that the optimized DICDBNs have high room-temperature ionic conductivity (2.05 × 10–4 S cm–1), good elasticity (stretchability 923%, 83.3% toughness recovery after 100 uninterrupted strain cycles at a strain of 300%), outstanding healing ability (healing efficiency 90.5%), on-demand degradability, excellent interfacial adhesiveness, good flame retardancy, and strain and temperature dual sensitivity, making them promising candidates for multifunctional wearable ionotronics.
研究领域:
材料科学
·
软离子电子学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Xusheng Zhang,Ying Tang,Nanxin Luo,Xin Wang,Zhiyuan Liu,Hui Peng,Guofu Ma,Ziqiang Lei
Flexible zinc–air batteries (ZABs) have attracted attention because of their intrinsic flexibility, high energy density, and excellent safety performance. However, the hydrogel electrolyte in ZABs usually suffers from shortcomings such as unsatisfactory tensile properties, low ionic conductivity, and poor water retention. Herein, a supramolecular-polymer dual-network hydrogel (G-PBA/PAAm SPDH) with excellent stretchability (>1000%) is prepared by combining a covalent self-assembled guanosine–phenylboronic acid tetramer supramolecular (G-PBA) network with a polyacrylamide (PAAm) network. What is more, the KOH (6 M)-filled G-PBA/PAAm SPDH shows remarkable freezing resistance (completely transparent at −40 °C), superior low- and high-temperature ionic conductivity (186 mS cm–1 at −40 °C and 195 mS cm–1 at 40 °C), good interfacial adhesion, and a satisfactory water retention rate of 70.06% after exposure to room temperature for 1 week. All these excellent properties strongly satisfy the application of G-PBA/PAAm SPDH as a multifunctional hydrogel electrolyte for flexible ZAB. As a result, the flexible ZAB assembled with the G-PBA/PAAm SPDH electrolyte can resist bending at different angles, maintain good electrochemical stability, and reach a high specific capacity (618 mA h gZn–1 at −40 °C and 680 mA h gZn–1 at 40 °C).
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
IRANIAN POLYMER JOURNAL
·
2019
·Vol. 28
·期 11
·943-955
·
IF 1.707
Zhou Shuiping,Tang Gen,Pang Aimin,Guo Xiang,Wu Fang,Song Huibin,Xu Xingxing,Hu Xiang,Wang Yanpin
A novel alkynyl neutral polymer-bonding agent (NPBA) was synthesized by a three-step approach. The molecular structure and thermal characteristics of alkynyl NPBA were analyzed. To reveal the influence of alkynyl NPBA on the mechanical properties of glycidyl azide polymer (GAP)-based propellants, two types of GAP propellants with Desmodur N-100 and alkynyl-terminated polyethylene glycol (APE) as curing agents were prepared and mechanical properties of the propellants were fully investigated. Tensile strength and initial modulus of propellants were notably promoted with the increase in alkynyl groups content of alkynyl NPBA with Desmodur N-100 as curing agent. The interfacial adhesion property between GAP binders and CL-20 fillers was greatly improved by alkynyl NPBA, and dewetting phenomenon of propellants during uniaxial tension was markedly attenuated. The wettability of GAP binders and solid fillers was good and the enhancing effect of alkynyl NPBA on tensile strength of GAP propellants was notable. Tensile strength and initial modulus of propellants were notably increased and their maximum elongation was decreased with the increase of alkynyl group content of alkynyl NPBA in propellants when APE was used as a curing agent. In addition, the dynamic mechanical analysis results showed that internal friction resistance of GAP molecular segment motion of GAP propellants was increased and interactions between GAP binder and solid fillers became much stronger with alkynyl NPBA. A notable enhancement effect on tensile strength and initial modulus of GAP propellants was demonstrated with alkynyl NPBA as bonding agent.
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
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Bing Yin,Youqing Hou,Xiaoyue Jia,Fangyu Fan,Pan Wang,Ditao Niu,Dongshuai Hou
To enhance the stability of epoxy (EP) coatings on steel bars while improving their active and passive corrosion protection properties, the functional composite coatings were designed and prepared. Intercalated zirconium phosphate nanofillers (LCZrP) loaded with corrosion inhibitors were firstly synthesized and designed, and then were integrated into silane coatings (SC), which were preapplied to the bar substrate to enhance the integrity and interfacial adhesion properties. Lastly, an epoxy layer was applied, resulting in the functional composite coatings (LCZrP/SC/EP). The chemical composition and surface morphology were performed using scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM-EDS). The corrosion resistance of the coatings was evaluated using electrochemical impedance spectroscopy (EIS), complemented by adhesion tests to analyze the service stability of the coatings. The findings revealed that the silane interlayer notably improved the interfacial bonding at the junction where the epoxy resin interacts with the steel bar, thereby enhancing the corrosion resistance. Notably, the coating presented the optimal corrosion resistance when the nanofiller content was 0.04 wt.%. The impedance modulus at 0.01 Hz (|Z| 0.01Hz ) for the LCZrP/SC/EP coated coating was 5.05 × 10 10 Ω·cm 2 , which was two orders of magnitude greater than that of the EP coatings and the EP coating with silane interlayer (SC/EP) by one order of magnitude. Following 30 days of immersion, its |Z| 0 . 01Hz remained higher than the EP coating as well as the SC/EP coatings. The integral LCZrP/SC/EP coatings exhibit excellent long-lasting corrosion protection, owing to the self-responsive characteristics of LCZrP, the interfacial adhesion of the LCZrP/SC interlayer, and the enhanced barrier effect of the EP coatings. This combination effectively integrates active and passive protection strategies, thereby preventing metal corrosion. The above solution ensures that the coatings provide durable and reliable protection against corrosion over extended periods.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 15
·2308950
·
IF 27.4
Sensheng Chen,Ge Chen,Yixuan Zhao,Saiyu Bu,Zhaoning Hu,Boyang Mao,Haotian Wu,Junhao Liao,Fangfang Li,Chaofan Zhou,Bingbing Guo,Wenlin Liu,Yaqi Zhu,Qi Lu,Jingyi Hu,Mingpeng Shang,Zhuofeng Shi,Beiming Yu,Xiaodong Zhang,Zhenxin Zhao,Kaicheng Jia,Yanfeng Zhang,Pengzhan Sun,Zhongfan Liu,Li Lin,Xiaomin Wang
The real applications of chemical vapor deposition (CVD)-grown graphene films require the reliable techniques for transferring graphene from growth substrates onto application-specific substrates. The transfer approaches that avoid the use of organic solvents, etchants, and strong bases are compatible with industrial batch processing, in which graphene transfer should be conducted by dry exfoliation and lamination. However, all-dry transfer of graphene remains unachievable owing to the difficulty in precisely controlling interfacial adhesion to enable the crack- and contamination-free transfer. Herein, through controllable crosslinking of transfer medium polymer, the adhesion is successfully tuned between the polymer and graphene for all-dry transfer of graphene wafers. Stronger adhesion enables crack-free peeling of the graphene from growth substrates, while reduced adhesion facilitates the exfoliation of polymer from graphene surface leaving an ultraclean surface. This work provides an industrially compatible approach for transferring 2D materials, key for their future applications, and offers a route for tuning the interfacial adhesion that would allow for the transfer-enabled fabrication of van der Waals heterostructures.
研究领域:
材料科学
·
纳米技术
·
化学工程
✓ 已验证
DOI
高影响因子
Advanced Materials Technologies
·
2025
·
IF 6.2
Xin Luo,Zhaoyu Lin,Baohao Yang,Taoying Rao,Jianhui Zeng,Yucheng Jiang,Linlin Ren,Rong Sun,Yimin Yao
The surge in AI technologies and the new energy sector has intensified the demand for efficient thermal management, now a key technological bottleneck. Silicone-based thermal interface materials (TIMs) dominate but suffer from oil bleeding, weak interfacial adhesion, and thermal aging. Alternative polymer systems are needed to enable advanced cooling solutions. In this study, poly(1-butyl-3-vinylimidazolium) bis(trifluoromethylsulfonyl)imide (P[Im 4 ,V]NTf 2 ), is evaluated for its potential in TIM applications. P[Im 4 ,V]NTf 2 exhibits remarkable mechanical and thermal properties, including an elongation exceeding 2400%, robust interfacial adhesion to copper (7.7 MPa) and silicon (8.3 MPa), and high thermal stability with negligible mass loss below 150 °C. It also features rapid self-healing and recyclability, alongside excellent compatibility with fillers. Aluminum (Al)-containing composites are prepared via straightforward solution blending of Al powders with P[Im 4 ,V]NTf 2 , yielding uniform Al dispersion and achieving thermal conductivity exceeding 3 W m −1 K −1 . The intrinsic adhesion of P[Im 4 ,V]NTf 2 enables desired interfacial adhesion (≈0.6 MPa) to copper, steel, and glass, far exceeding that of silicone-based TIMs (≈0.05 MPa). The composite also shows stable thermal performance in device-level tests, confirming the applicability of structurally diverse poly (ionic liquid)s with commercial fillers for TIM applications.
研究领域:
材料科学
·
高分子科学
·
电子工程
·
热管理
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Lei Zhou,Muhammad Khurram Tufail,Niaz Ahmad,Tinglu Song,Renjie Chen,Wen Yang
The extrinsic cathode interface between the sulfide electrolyte and the Li2S electrode is always ignored in all-solid-state lithium–sulfur batteries. However, the aggregation of the Li2S cathode is still observed during cycling. The gradually lost extrinsic contact interface between the cathode and the electrolyte would result in considerable interface resistance and severe capacity decay in the cell due to the lack of efficient electron and ionic conduction at the interface. Herein, a facile dual-doping strategy demonstrates the synthesis of a functional inorganic electrolyte. The obtained Li7P2.9Ce0.2S10.9Cl0.3 glass–ceramic electrolyte shows a higher-lithium-ionic conductivity of 3.2 mS cm–1 at room temperature. Further, UV–vis absorption and ex situ scanning electron microscopy studies confirm robust interfacial adhesion between the functional inorganic electrolyte, Li7P2.9Ce0.2S10.9Cl0.3, and the Li2S cathode. Thus, a stable extrinsic cathode interface is unprecedently built. Finally, the all-solid-state lithium–sulfur battery based on the Li7P2.9Ce0.2S10.9Cl0.3 electrolyte delivers a higher reversible initial capacity of 617 mA h g–1, a lower interface resistance of 25 Ω cm2 and much better cycling stability (with a high capacity retention of 89% after 100 cycles) than the pristine Li7P3S11 electrolyte.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）