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学者姓名：汪婷
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Abstract ：
2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (ultraviolet absorbent, BP) intercalated layered double hydroxide (LDH) was synthesized to enhance the anti-ageing properties of styrene-butadiene-styrene block copolymer (SBS) modified bitumen (SMB). X-ray diffraction and UV-vis spectroscopy indicated that BP has been successfully substituted into LDH interlamination, and BP intercalated LDH (BP-LDH) exhibited better UV absorptive capacity than LDH. Then, the physical and rheological properties, chemical structure of BP-LDH and LDH modified SMB before and after ageing were comprehensively studied. Compared with LDH, BP-LDH possessed the smaller difference in solubility parameters (delta) and the stronger interaction energy (Einter) with SMB, resulting in the better compatibility of BP-LDH modified SMB. The high-temperature stability of SMB was promoted with the addition of BP-LDH or LDH, especially BP-LDH. After ageing, the temperature susceptibility, low-temperature anti-cracking and anti-fatigue cracking of SMB were deteriorated, the oxygen-containing groups (C = O and S = O) in SMB noticeably increased and carbon-carbon double bond (C = C) concurrently decreased. LDH could mitigate the ruin of ageing on the performance and chemical structures of SMB, and strengthen the anti-ageing performance. Furthermore, BP intercalated modification could further significantly heighten the performance of LDH.
Keyword ：
Anti-ageing ability Anti-ageing ability Compatibility Compatibility Layered double hydroxide Layered double hydroxide Molecular dynamics simulation Molecular dynamics simulation Rheological properties Rheological properties SBS modified bitumen SBS modified bitumen
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| GB/T 7714 | Wang, Ting , Wu, Jiangxin , Zhang, Canlin et al. Styrene-butadiene-styrene block copolymer modified bitumen with ultraviolet absorbent intercalated layered double hydroxide: Compatibility and anti-ageing properties [J]. | JOURNAL OF MOLECULAR LIQUIDS , 2024 , 410 . |
| MLA | Wang, Ting et al. "Styrene-butadiene-styrene block copolymer modified bitumen with ultraviolet absorbent intercalated layered double hydroxide: Compatibility and anti-ageing properties" . | JOURNAL OF MOLECULAR LIQUIDS 410 (2024) . |
| APA | Wang, Ting , Wu, Jiangxin , Zhang, Canlin , Yang, Shuai , Dong, Hongjun , Hu, Shikai et al. Styrene-butadiene-styrene block copolymer modified bitumen with ultraviolet absorbent intercalated layered double hydroxide: Compatibility and anti-ageing properties . | JOURNAL OF MOLECULAR LIQUIDS , 2024 , 410 . |
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Abstract ：
为了增强SBS改性沥青(SMB)的抗老化性能,利用层状双金属氢氧化物(LDHs)的独特结构对SMB进行改性.研究了LDHs对SMB的物理性能、高低温流变性能和化学结构的影响规律.研究结果表明:LDHs的加入有助于提高SMB的弹性性能,提升SMB的高温稳定性能;老化后,沥青分子发生氧化反应导致SMB中含氧官能团(S=O和C=O)含量增加,同时SBS分子链发生断裂引起SMB中碳碳双键官能团(C=C)含量减少,这些变化使SMB的物理性能、高温抗车辙性能和低温抗疲劳开裂性能发生劣化,导致其变硬变脆;LDHs的加入可以阻止沥青分子的氧化反应和SBS分子链断裂,减缓沥青分子的老化和SBS老化降解,减轻老化对SMB物理性能和高低温流变性能的破坏,增强SMB的抗老化能力,为建设长寿命的SMB路面提供技术支持.
Keyword ：
SBS改性沥青(SMB) SBS改性沥青(SMB) 化学结构 化学结构 层状双金属氢氧化物(LDHs) 层状双金属氢氧化物(LDHs) 抗老化能力 抗老化能力 流变性能 流变性能 物理性能 物理性能
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| GB/T 7714 | 汪婷 , 谈振华 , 章灿林 . 层状双金属氢氧化物(LDHs)对SBS改性沥青抗老化性能的影响研究 [J]. | 市政技术 , 2024 , 42 (10) : 200-206 . |
| MLA | 汪婷 et al. "层状双金属氢氧化物(LDHs)对SBS改性沥青抗老化性能的影响研究" . | 市政技术 42 . 10 (2024) : 200-206 . |
| APA | 汪婷 , 谈振华 , 章灿林 . 层状双金属氢氧化物(LDHs)对SBS改性沥青抗老化性能的影响研究 . | 市政技术 , 2024 , 42 (10) , 200-206 . |
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A systematic study on the tetramethylsilane-hydorgen (TMS-H-2) system by high-throughput thermodynamic method is conducted with a large experimental condition range (500 2700 K, 0 75 kPa, and H-2:TMS ratio of 0.1 to 10000) towards the deposition of pure single-crystal SiC by high-temperature chemical vapor deposition (HTCVD) method. The temperature, pressure and H-2:TMS ratio dependence phase diagrams are calculated to describe the deposition condition of single-phase "gas + SiC" region. Due to the etching effect of hydrogen on graphite, the increasing temperature and pressure could suppress the formation of graphite and favor the growth of SiC in the H-2:TMS ratio above 1000, however, excessive H-2:TMS ratio could reduce the TMS consumption efficiency. TMS consumption efficiency maps focusing on the gas + SiC region based on the phase diagrams have been carried out to balance the deposition parameters, SiC mole fraction and TMS consumption efficiency. When H-2:TMS ratio > 1000, an accepted window for preparing single-phase SiC with a high TMS consumption efficiency (>90%) is provided, and this window could expand furtherly with increasing the ratio. TMS consumption efficiency maps offer the theoretic basis and guidance for improving the quality and cost of industrial production of single-crystal SiC by HTCVD method.
Keyword ：
Consumption efficiency Consumption efficiency High-throughput High-throughput SiC SiC Thermodynamic method Thermodynamic method TMS TMS
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| GB/T 7714 | Lu, Pengjian , Huang, Wei , Wang, Junjun et al. High-throughput thermodynamic study of SiC high-temperature chemical vapor deposition from TMS-H2 [J]. | JOURNAL OF CRYSTAL GROWTH , 2023 , 626 . |
| MLA | Lu, Pengjian et al. "High-throughput thermodynamic study of SiC high-temperature chemical vapor deposition from TMS-H2" . | JOURNAL OF CRYSTAL GROWTH 626 (2023) . |
| APA | Lu, Pengjian , Huang, Wei , Wang, Junjun , Yang, Haitao , Guo, Shiyue , Li, Bin et al. High-throughput thermodynamic study of SiC high-temperature chemical vapor deposition from TMS-H2 . | JOURNAL OF CRYSTAL GROWTH , 2023 , 626 . |
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Sodium dodecyl sulfate (SDS) intercalated layered double hydroxides (LDHs) were prepared to enhance the ageing resistance of SBS modified bitumen (SMB). X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) showed that SDS has been intercalated into the interlayers of LDHs. Compared to LDHs, the interaction between SDS intercalated LDHs (OLDHs) and SMB was obviously stronger, and OLDHs exhibited better dispersity and stability in SMB. After ageing, the viscoelastic properties of SMB were deteriorated. LDHs and OLDHs could obviously alleviate the deterioration of ageing on the properties of SMB, which could improve the ageing resistance of SMB, especially OLDHs. Additionally, the enhancement mechanisms of OLDHs and LDHs for the ageing resistance of SMB at the microscopic scale were investigated by molecular dynamics. The incor-poration of LDHs could obstruct the invasion of oxygen into the interior of SMB and inhibit the diffusion rate of oxygen in SMB, which reduced the oxidation reaction probability of SMB during ageing, and eventually achieved the improvement on ageing resistance of SMB. The effectiveness of LDHs was further improved after SDS intercalated modification, that was, SDS intercalated modification was beneficial to enhance the ageing resis-tance of LDHs for SMB.
Keyword ：
Ageing resistance Ageing resistance Intercalated modification Intercalated modification Layered double hydroxides Layered double hydroxides Molecular dynamics Molecular dynamics SBS modified bitumen SBS modified bitumen
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| GB/T 7714 | Zhang, Canlin , Li, Yifei , Wang, Ting et al. Multi-scale evaluation of sodium dodecyl sulfate intercalated LDHs on the ageing resistance of SBS modified bitumen [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 406 . |
| MLA | Zhang, Canlin et al. "Multi-scale evaluation of sodium dodecyl sulfate intercalated LDHs on the ageing resistance of SBS modified bitumen" . | CONSTRUCTION AND BUILDING MATERIALS 406 (2023) . |
| APA | Zhang, Canlin , Li, Yifei , Wang, Ting , Xu, Song , Ma, Hongyan , Fang, Lei et al. Multi-scale evaluation of sodium dodecyl sulfate intercalated LDHs on the ageing resistance of SBS modified bitumen . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 406 . |
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For the utilization of waste bischofite from salt lakes, the waste bischofite was utilized to synthesize layered double hydroxide (LDH) by hydrothermal method, and the synthesized LDH was further organically intercalated with 3,5-Di-tert-butyl-4-hydroxyphenylpropionic acid (antioxidant, DPA) by anion exchange methods. Then, the synthesized LDH and DPA intercalated LDH (DPA-LDH) were applied to improve the ageing resistance of asphalt. X-ray diffraction and Fourier transform infrared spectroscopy manifested that LDH and DPA-LDH had been successfully synthesized. After DPA intercalation, the adhesive aggregation among LDH particles was obviously ameliorated, and the contact angle of LDH increased from 31.3 degrees to 77.9 degrees, the hydrophilicity of LDH was significantly decreased. The effect of LDH and DPA-LDH (3 % by weight of asphalt) on rheological properties, chemical constituents and molecular weight of asphalt before and after ageing were comprehensively studied. The high-temperature performance grade of asphalt increased from PG64 to PG70 with the addition of LDH and DPA-LDH, which indicated that LDH and DPA-LDH could enhance the high-temperature performance of asphalt. After ageing, the high and low- temperature performance of asphalt worsened, the colloidal stability index (C-I) decreased from 3.548 to 1.844, the gel index (G(I)) was 48 %, the colloidal structure tended to gel structure, the molecular weight (M-w) enlarged from 3387 to 4101 (the M-w growth rate of 21 %). LDH could restrain the destruction of ageing on rheological properties, the colloidal structure gel of asphalt (the G(I) of 37.4 %) and molecular weight (the M-w growth rate of 13 %) of asphalt, and strengthen the ageing resistance of asphalt. Furthermore, the enhancement of DPA-LDH (the G(I) of 16.7 % and the M-w growth rate of 6 %) on the ageing resistance of asphalt was more superior than LDH. The result showed that the synthesized DPA-LDH exhibited outstanding performance in improving the ageing resistance of asphalt, which was beneficial to the long-life pavement and the utilization of abandoned bischofite from salt lakes.
Keyword ：
Ageing resistance Ageing resistance Antioxidant intercalation Antioxidant intercalation Asphalt Asphalt Layered double hydroxide Layered double hydroxide Waste bischofite Waste bischofite
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| GB/T 7714 | Zhang, Canlin , Dong, Hongjun , Wang, Ting et al. Synthesis of organic layered double hydroxide from waste bischofite and its application on ageing resistance of asphalt [J]. | FUEL , 2023 , 359 . |
| MLA | Zhang, Canlin et al. "Synthesis of organic layered double hydroxide from waste bischofite and its application on ageing resistance of asphalt" . | FUEL 359 (2023) . |
| APA | Zhang, Canlin , Dong, Hongjun , Wang, Ting , Li, Yifei , Xu, Song , Que, Yun et al. Synthesis of organic layered double hydroxide from waste bischofite and its application on ageing resistance of asphalt . | FUEL , 2023 , 359 . |
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Dodecyltrimethoxysilane surface organic layered double hydroxides (LDHs) was synthesized and used to improve the aging resistance of SBS modified bitumen (SMB), According to Fourier transform infrared spectroscopy, x-ray diffraction and Contact angle meter, dodecyltrimethoxysilane has been chemically grafted onto the surface of LDHs and will not affect the crystal structure of LDHs. After dodecyltrimethoxysilane surface organic modification, the -OH on the surface of LDHs was decreased, meanwhile, some organic groups were introduced into LDHs, which contributed to reducing the surface hydrophilicity of LDHs. Then, the physical, rheological properties and chemical structure of SMB containing OLDHs and LDHs before and after aging were studied thoroughly. Compared with LDHs, the compatibility of OLDHs in SMB has been significantly enhanced. Furthermore, OLDHs modified SMB exhibited more excellent high-temperature behavior. After aging, bitumen was oxidized and SBS was degraded, the physical and rheological properties of SMB were seriously deteriorated. The addition of LDHs can suppress the destruction of aging on the performance and chemical structure of SBM, and enhance the aging resistance of SBM. The enhancement of LDHs has been notably strengthened after dodecyltrimethoxysilane surface organic modification.
Keyword ：
aging resistance aging resistance chemical structure chemical structure layered double hydroxides layered double hydroxides physical and rheological properties physical and rheological properties SBS modified bitumen SBS modified bitumen surface organic modi?cation surface organic modi?cation
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| GB/T 7714 | Zhang, Canlin , Chen, Minxuan , Yu, Meng et al. Preparation of dodecyltrimethoxysilane surface organic LDHs and application in aging resistance of SBS modified bitumen [J]. | MATERIALS RESEARCH EXPRESS , 2021 , 8 (7) . |
| MLA | Zhang, Canlin et al. "Preparation of dodecyltrimethoxysilane surface organic LDHs and application in aging resistance of SBS modified bitumen" . | MATERIALS RESEARCH EXPRESS 8 . 7 (2021) . |
| APA | Zhang, Canlin , Chen, Minxuan , Yu, Meng , Wang, Ting , Chen, Guochuan , He, Jun et al. Preparation of dodecyltrimethoxysilane surface organic LDHs and application in aging resistance of SBS modified bitumen . | MATERIALS RESEARCH EXPRESS , 2021 , 8 (7) . |
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为了提高沥青材料的耐久性,将层状双金属氢氧化物(LDHs)用于制备改性沥青。研究了老化前后LDHs对沥青材料物理性能、流变性能、化学组分及胶体结构的影响。结果表明:LDHs能够改善沥青材料的高温稳定性,LDHs最佳掺量为3%;热氧老化和光氧老化后,基质沥青的黏弹性发生破坏,黏性行为减弱,弹性行为增强,物理性能和流变性能发生劣化;芳香分含量明显降低,沥青质含量显著增加,胶体稳定性变差,胶体结构趋于凝胶化。LDHs的加入明显抑制了老化对沥青材料物理性能、流变性能、化学组分及胶体结构的破坏,增强了沥青材料的抗老化性能。
Keyword ：
层状双金属氢氧化物(LDHs) 层状双金属氢氧化物(LDHs) 抗老化性能 抗老化性能 沥青 沥青
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| GB/T 7714 | 汪婷 . LDHs对沥青抗老化性能的影响研究 [J]. | 市政技术 , 2021 , 39 (12) : 124-128 . |
| MLA | 汪婷 . "LDHs对沥青抗老化性能的影响研究" . | 市政技术 39 . 12 (2021) : 124-128 . |
| APA | 汪婷 . LDHs对沥青抗老化性能的影响研究 . | 市政技术 , 2021 , 39 (12) , 124-128 . |
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SBS-modified bitumen (SMB) is susceptible to aging, which seriously influences its service performance and life. In order to strengthen the anti-aging ability of SMB, triethoxyvinylsilane was designed to organically modify layered double hydroxides (LDHs) and was applied to modify SMB. The dispersibility and storage stability of LDHs in SMB were markedly enhanced after triethoxyvinylsilane organic modification, and the compatibility and storage stability of SBS in bitumen were simultaneously enhanced. Compared with SMB, the introduction of LDHs and organic LDHs (OLDHs) could ameliorate the high-temperature properties of SMB, and the thermostability of SBS in bitumen at a high temperature was also distinctly improved, especially OLDHs. After aging, due to the oxidation of molecular bitumen and the degradation of molecular SBS, SMB became hardened and brittle, and the rheological properties were significantly deteriorated, which had serious impacts on the performance of SMB. LDHs can mitigate the detriment of aging to bitumen and SBS, and the deterioration of the rheological properties of SMB is obviously alleviated. As a result of the better dispersibility and storage stability, OLDHs exerted superior reinforcement of the anti-aging ability of SMB.
Keyword ：
aging resistance aging resistance layered double hydroxides layered double hydroxides organic modification organic modification rheological properties rheological properties SBS modified bitumen SBS modified bitumen
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| GB/T 7714 | Zhang, Canlin , Dong, Hongjun , Yan, Zhengli et al. SBS Modified Bitumen with Organic Layered Double Hydroxides: Compatibility and Aging Effects on Rheological Properties [J]. | MATERIALS , 2021 , 14 (15) . |
| MLA | Zhang, Canlin et al. "SBS Modified Bitumen with Organic Layered Double Hydroxides: Compatibility and Aging Effects on Rheological Properties" . | MATERIALS 14 . 15 (2021) . |
| APA | Zhang, Canlin , Dong, Hongjun , Yan, Zhengli , Yu, Meng , Wang, Ting , Xu, Shi et al. SBS Modified Bitumen with Organic Layered Double Hydroxides: Compatibility and Aging Effects on Rheological Properties . | MATERIALS , 2021 , 14 (15) . |
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To improve the anti-aging ability of SBS modified bitumen (SMB), layered double hydroxide (LDH) organically modified by hexadecyltrimethoxysilane was prepared and utilized for the modification of SMB. According to X-ray photoelectron spectroscopy, hexadecyltrimethoxysilane has been grafted into LDH through chemical bonding. Compared with LDH, the hydrophilicity of organic LDH (OLDH) was obviously reduced, and OLDH possessed better dispersibility and stability in SMB, because of the decrease of hydroxyl and the introduced organo-functional groups on the surface of LDH. The addition of OLDH and LDH can ameliorate the high temperature behavior of SMB, especially OLDH. After aging, bitumen was oxidized and SBS was degraded, which resulted in the physical and rheological property deterioration of SMB. LDH can alleviate the destruction of aging on the performance and chemical structure of SMB. Furthermore, the improvement of LDH on the anti-aging ability of SMB has been further enhanced after hexadecyltrimethoxysilane organic modification.
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| GB/T 7714 | Zhang, Canlin , Dong, Hongjun , Wang, Ting et al. Investigation of anti-aging of SBS modified bitumen containing surface organic layered double hydroxide [J]. | RSC ADVANCES , 2021 , 11 (36) : 22131-22139 . |
| MLA | Zhang, Canlin et al. "Investigation of anti-aging of SBS modified bitumen containing surface organic layered double hydroxide" . | RSC ADVANCES 11 . 36 (2021) : 22131-22139 . |
| APA | Zhang, Canlin , Dong, Hongjun , Wang, Ting , Xu, Song , He, Jun , Fang, Lei et al. Investigation of anti-aging of SBS modified bitumen containing surface organic layered double hydroxide . | RSC ADVANCES , 2021 , 11 (36) , 22131-22139 . |
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Laser chemical vapor deposition (LCVD) was applied to prepare SmBa2Cu3O7-delta (SmBCO) superconductive films on single-crystalline LaAlO3 (100) substrates. The effect of oxygen partial pressure (P-O2) on the crystal orientation, microstructure, and superconducting property of SmBCO film were investigated thoroughly. The results of X-ray diffraction (XRD) and Raman showed that the crystal orientation of SmBCO film was pure c-axis orientation at the P-O2 of 200 Pa, and the a-axis orientation grains gradually emerged in SmBCO film with the increase of P-O2. The deposition rate, critical temperature (T-c), critical current density (J(c)) firstly increased and then decreased with the increase of P-O2. At the P-O2 of 200 Pa, the SmBCO film had smooth and dense surface, the lowest FWHM of phi-scan (1.1 degrees), the highest T-c (89.2 K) and J(c) (2.04 MA/cm(2)), which indicated that SmBCO superconductive films possessed excellent crystal structure and superconducting performance.
Keyword ：
laser chemical vapor deposition laser chemical vapor deposition oxygen partial pressure oxygen partial pressure SmBa2Cu3O7-delta film SmBa2Cu3O7-delta film superconducting property superconducting property
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| GB/T 7714 | Wang, Ting , Tu, Rong , Zhang, Canlin et al. Influence of oxygen partial pressure on SmBa2Cu3O7-delta film deposited by laser chemical vapor deposition [J]. | JOURNAL OF ASIAN CERAMIC SOCIETIES , 2020 , 9 (1) : 174-184 . |
| MLA | Wang, Ting et al. "Influence of oxygen partial pressure on SmBa2Cu3O7-delta film deposited by laser chemical vapor deposition" . | JOURNAL OF ASIAN CERAMIC SOCIETIES 9 . 1 (2020) : 174-184 . |
| APA | Wang, Ting , Tu, Rong , Zhang, Canlin , Zhang, Song , Wang, Kaidong , Goto, Takashi et al. Influence of oxygen partial pressure on SmBa2Cu3O7-delta film deposited by laser chemical vapor deposition . | JOURNAL OF ASIAN CERAMIC SOCIETIES , 2020 , 9 (1) , 174-184 . |
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