FIRE AND MATERIALS
·
2024
·Vol. 48
·期 6
·657-667
·
IF 2
Bin Zhang,Shaohua Zeng
The properties and structure of flexible PVC by incorporating zinc borate (ZB)-modified diantimony trioxide (Sb 2 O 3 ) were investigated. The results of flame retardancy and smoke suppression testing indicate that there was an obvious maximum Limited oxygen index (LOI) value of PVC/20 wt.% ZB–Sb 2 O 3 composites reached 37.5% and passed the UL 94 V-0 rating. An obvious synergistic effect between ZB and Sb 2 O 3 was observed by LOI, SDR, and TG. Moreover, remarkable decreases in the smoke density were observed when ZB–Sb 2 O 3 was incorporated into PVC. In addition, the tensile strength and elongation at break of PVC/ZB–Sb 2 O 3 composites was higher than PVC/Sb 2 O 3 composites, and this ameliorative effect was mainly arising from the ZB–Sb 2 O 3 nanoparticles, which reduced the degree of fatal defects on PVC. The addition of ZB and Sb 2 O 3 greatly increased the amount of residual char and apparently improved the mechanical properties of PVC composites. According to scanning electron microscopy photographs of residual char, after thermal decomposition, there were many fragments linked to the condensed phase and the compact char layer. Fourier transform infrared spectroscopy shows the residues char was composed of benzene ring, the flame retardants occurred and the condensed phase with significant interactions.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Lihong Liu,Yan Zhang,Tengteng Wang,Changchang Ma,Zhengping Fang,Deyi Wang
Chloroprene rubber (CR) is one of the widely used materials due to its excellent performance. However, it will evolve large amounts of smoke and toxic gas during its combustion, which may cause smoke inhalation even human deaths in the populated enclosed spaces like rail transit, etc. Aiming to improving the fire safety of CR, the effects of zinc borate (ZnB) and antimony trioxide (Sb 2 O 3 ) alone and their combination on the flame retardancy, smoke suppression, and toxicity inhibition of CR are investigated. The performances of CR/ZnB, CR/Sb 2 O 3 and CR/ZnB/Sb 2 O 3 were analyzed by limiting oxygen index (LOI), UL94 rating and cone data. The results showed that the combination of ZnB and Sb 2 O 3 can integrate their advantages to exhibit the higher LOI and flame retardancy index (FRI) values as well as toxicity inhibition ability, indicating their good fire retardancy feature. The corresponding mechanism including the flame retardant mechanism and Lewis acid function was discussed in detail.
研究领域:
材料科学
·
消防安全
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 11
·5732-5738
·
IF 5.503
Dongdong Li,Junzhi Li,Junming Cao,Xiyao Fu,Liang Zhou,Wei Han
Sb and Sb2O3 are attractive anode materials for sodium ion batteries due to their relatively low cost and high theoretical capacity. However, the poor cycling stability caused by serious volume expansion hinders their development. In this work, we use electrospinning and carbon thermal reduction to easily synthesize Sb/Sb2O3@N-doped carbon nanofiber membranes. The flexible Sb/Sb2O3@NCNF membranes are directly used as free-standing electrodes in SIBs showing a high specific capacity and excellent cycling stability (527.3 mA h g−1 after 100 cycles at 0.1 A g−1). They can still deliver a reversible specific capacity around 400 mA h g−1 after 700 cycles even at 1 A g−1. The flexible free-standing design, simple synthesis methods and excellent electrochemical properties make the Sb/Sb2O3@NCNF electrodes an ideal anode candidate material for sodium ion batteries.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Dan Qu,Lekai Cheng,Yanqiong Bao,Yingxv Gao,Xiong Zheng,Guangzhao Qin
Solar steam generation has received tremendous attention recently due to the increasing demand for fresh water. In this study, carbon black (CB) and antimony doped tin oxide (ATO) hybrid nanofluid were prepared to improve the performance of the solar desalination system . The long-term stability of CB-ATO nanofluids enables good operation during solar steam generation. The optical properties of hybrid nanofluids were investigated systematically and showed that hybrid nanofluids significantly enhanced the solar energy utilization ability compared with one-component nanofluids. Furthermore, solar evaporation experiments of hybrid nanofluids were carried out under one sun using solar irradiation simulator, the evaporation efficiency was enhanced by about four times than pure water with the addition of nanoparticles. Meanwhile, the solar-thermal conversion during the evaporation process was analyzed using experimental data and the mechanism of evaporation enhancement of hybrid nanofluids was proposed. This study paves a new way for the use of hybrid nanofluids in the solar steam generation technique.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2021
·Vol. 54
·期 31
·315505
·
IF 3.207
Jin-Hua Liu,Yan-Fei Li,Yan-Hong Shi,Jin-Zhi Guo,Jin Yang,Xing-Long Wu,Jing-Ping Zhang,Wei Hu,Hai-Zhu Sun
Antimony (Sb) and its oxides, as promising electrode materials, have attracted much attention because of their low cost, environmental friendliness, and high theoretical capacity. Herein, boron doped flower-cluster-like Sb/SbO2@reduced graphene oxide (rGO) composites are synthesized for use as sodium-ion battery anode materials using a solvothermal strategy. The contents of Sb and antimony oxide (SbO2) are controlled by adding different contents of NaBH4. Meanwhile, the introduction of NaBH4 successfully realizes boron doping and enlarges the lattice spacing of the SbO2, improving its conductivity and Na+ transport. As a result, optimal Sb/SbO2@rGO-10 composites display a desirable capacity of 346 mAh g−1 at 50 mA g−1 after 100 cycles with a capacity retention of 106%. Even at high current densities, a capacity of 236 mAh g−1 is achieved, demonstrating a satisfactory rate capacity. Moreover, the Sb/SbO2@rGO-10 electrode shows satisfactory Na storage performance at low temperatures. In addition, sodium-ion full cells are assembled using an Sb/SbO2@rGO-10 anode and a Na3V2(PO4)2O2F cathode, with which a satisfactory electrochemical performance of 102 mAh g−1 after 50 cycles at 50 mA g−1 is achieved, showing their high practical potential.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Jingjing Wu,Bo Yuan,Yuyang Gu,Yifan Zhang,Zhongyuan Yan,Lida Zhang,Xusheng Yang,Haijiao Zhang,Ling Bai,Ziquan Li,Zhen-Dong Huang
In this work, a multifunctional BiOCl/amorphous antimony oxide (AAO) hetero-hybrid with the molar ratio of Bi 3+ /Sb 3+ in 1/3 (1-BOC/3-AAO) is successfully developed by the scalable ball-milling strategy and demonstrates an exceptional visible light photocatalytic degradation performance of RhB and superior anodic potassium ion storage performance for potassium ion batteries over other reported BOC materials, benefitted from the large specific surface area , narrow band gap, improved utilization of visible light, effectively suppressed recombination and highly enhanced transfer efficiency of the photogenerated charge carriers of the hetero-hybrid. Under the light irradiation of a 300 W xenon lamp without and with an optical filter (≥ 420 nm), almost 100.0% RhB in the aqueous solution can be degraded after 20 mins. At the same time, the as-prepared 1-BOC/3-AAO also demonstrate a superior potassium ion storage over other reported BOC-based materials. The potassium half-cell assembled with as-prepared 1-BOC/3-AAO as working electrodes can deliver an initial charge capacity of 505.3 and 395.9 mAhg −1 at the current density of 100 and 500 mAg −1 , meanwhile, maintains 427.7 after 500 cycles at 100 mAg −1 and 316.9 mAhg −1 after 800 cycles at 500 mAg −1 , respectively. Therefore, BOC/AAO hetero-hybrids will be a promising candidate commercial catalyst for degradation of organic pollutes within the industrial waste water and promising high performance anode materials for potassium ion batteries .
研究领域:
材料科学
·
物理化学
·
能源存储
·
环境催化
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纳米材料
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电化学
✓ 已验证
DOI
高影响因子
WEAR
·
2024
·
IF 5.3
Yanfei Liu,Zhikai Fan,Shengtao Yu,Ruize Zhang,Xiangyu Ge,Wenzhong Wang
MoS 2 –Sb 2 O 3 coating is commonly used as solid lubricant for titanium alloys , but the wear-resistance performance is still limited. Core-shell annealed nanodiamond (AND) particle is used as reinforcement for MoS 2 –Sb 2 O 3 coating on Ti6Al4V substrate treated by plasma electrolytic oxidation (PEO) and laser surface texturing (LST). The incorporation of AND particles into the MoS 2 –Sb 2 O 3 coating results in a 39 % decrease in friction and significantly reduces wear on the composite coating . Structural transformation of AND particles to amorphous carbon and graphitic structure promotes the densification of top-layer coating, enhancing lubrication and wear-resistance. Change of contact stress by PEO-LST promotes the formation of dense tribofilm and re-orientation of MoS 2 . This study has implications for the development of solid lubrication coatings for aerospace applications through functional nanomaterials and targeted designed surfaces.
研究领域:
材料科学
·
表面工程
·
纳米技术
·
机械工程
✓ 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）