JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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2016
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IF 1.655
Yue Qiao,Jingyi Yang,Hao Cai,Peng Cheng,Xinru Xu
Demulsification of steam-assisted gravity drainage (SAGD)–produced liquid from the Xinjiang oil field was investigated in this study. The heavy crude oil in the produced liquid presents a high density, high viscosity, high resin and asphaltene contents, and high acid value. Thus, this liquid is difficult to separate. The effect of cationic deoiling agents on the separation of the SAGD-produced liquid was tested. W590 showed the highest separation efficiency among the deoiling agents surveyed. Zeta-potential experiments revealed that cationic deoiling agents could neutralize negative charges on the oil droplet surface and significantly reduce the oil content in the separated water. After the produced liquid was settled with 220 mg/L W590 at 90 °C for 1 h, the oil content in the water could be rapidly decreased to 198.0 mg/L and the water content in the produced liquid could be reduced from 86.2% to 22% to obtain a W/O emulsion. In the second process of separation, the demulsifier FC20 was applied. Under an electric field, the water content in the emulsion to which 30% diesel oil had been added could be reduced to 1.0% with 300 mg/L FC20, a 750 V/cm electric field for 20 min, and a settling time at 90 °C for 4 h.
研究领域:
石油工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
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2025
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IF 4.5
Qiuxue Zhang,Yunjiao Deng,Zhongyu Fu,Shuangquan Wang,Chao Zhou,Huixuan Zhang
Oil agent was a kind of auxiliary agent which played an important role in the processing of carbon fiber. High hydrophilia and low surface tension of polyether-epoxy modified polymethylphenylsiloxane (PEMPS) emulsions used as oil agent had been designed and prepared. Firstly, polyether modified methyldimethoxysilane (PMMS) was synthesized with methoxypolyethylene glycols (MPEG) and (3-isocyanatopropyl)dimethoxymethyl-silane (IPDS). PEMPS were synthesized by introducing PMMS into epoxy modified polymethylphenylsiloxane. With the PMMS content increasing from 0 % to 7 %, the water contact angle of PEMPS decreased from 79.0° to 32.4°. PEMPS emulsions were prepared with PEMPS, surfactants and water. Compared with PEMPS without PMMS, and the hydrodynamic size of PEMPS emulsion containing 7 % PMMS decreased from 310.3 to 159.3 nm, and the surface tension reduced from 22.9 to 20.6 mN/m. In addition, as the interaction between PEMPS and PAN was enhanced, the PEMPS emulsion contact angle on polyacrylonitrile (PAN) film also decreased from 36.2° to 27.8°, indicating that PEMPS emulsions had excellent hydrophilia and proper hydrodynamic size and could be used as PAN spinning oil when the PMMS was 7 %. The surface of PAN precursors coated by diluted PEMPS emulsions was flat, and a significant decrease in heat releasing of precursors during heat treatment could be observed. However, as the solid content was 3 wt%, many agglomerations appeared on the surface of the precursor. Taken together, 1 wt% PEMPS emulsion could repair the grooves on PAN precursors surface and benefit for the spinning process of PAN precursors.
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
Silicon
·
2024
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IF 2.8
Zhang Qiuxue,Deng Yunjiao,Fu Zhongyu,Wang Shuangquan,Li Songsong,Zhou Chao,Zhang Huixuan
A series of epoxy modified polymethylpenylsiloxane (EPMPS) emulsions for oil agent in carbon fibers production were synthesized with EPMPS resins and non-ionic emulsifier by phase inversion emulsification. The EPMPS resins with different epoxy content were prepared by non-hydrolytic sol–gel method. The influence of epoxy content on the chemical structure, molecular weight, surface tension and thermal stability of EPMPS resins were investigated by Fourier transform infrared (FTIR), gel permeation chromatography (GPC), contact angle meter and thermogravimetric analysis (TGA), respectively. The properties of EPMPS emulsions and their effects on polyacrylonitrile (PAN) precursor were investigated by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). It was found that the increase of epoxy content not only obviously decreased the molecular weight and surface tension of EPMPS, but also conduced to the processing of PAN precursor. With the decreasing of surface tension, the oil agent was easier to spread and film on the surface of PAN precursors. In addition, the TGA curves showed that the EPMPS resins had good thermal stability at low temperature and can be completed volatilized under high temperature conditions. Hence, the EPMPS emulsions could be used as oil agent for PAN precursors.
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
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
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2025
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IF 2.4
Qiuxue Zhang,Yunjiao Deng,Zhongyu Fu,Pengfei Deng,Chao Zhou,Huixuan Zhang
Spinning oil was an important adjuvant used in the process of polyacrylonitrile (PAN) precursors. In this article, amino modified polydimethylsiloxane (AMPS) emulsions with excellent properties that could be used as spinning oil were successfully prepared. AMPS was synthesized firstly with octamethylcyclotetrasiloxane (D4), 3-(dimethoxy(methyl)silyl)propylamine (KH554) and decamethyltetrasiloxane(MD2M). The AMPS emulsion was prepared with AMPS, emulsifiers, acetic acid and water, and the influence of amino content on the properties of AMPS and AMPS emulsions was investigated in detail. The introduction of amino decreased the thermal decomposition temperature and enhanced the thermal stability of AMPS at 500–600 °C. In addition, the particle size and water contact angles of AMPS emulsion were obviously reduced with the increase of amino content, as the interaction between AMPS and PAN was enhanced. When the proportion of KH554 was 7.5%, AMPS emulsion had a proper particle size of 160.3 nm and a small contact angle of 34.5° with PAN film, which could be applied as spinning oil during the processing of PAN precursors. The optimum solid content of AMPS emulsion coating on the PAN precursors was also investigated. The surface of PAN precursors was smooth and the grooves were nearly repaired with the solid content of 1 wt%.
研究领域:
高分子科学
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材料工程
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化学工程
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纺织工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Hongna Ding,Erlong Yang,Jihong Zhang,Zhejun Pan,Yugao Wang,Sheikh Rahman,Srinivas Mettu
Carbon quantum dots (CQDs) are a class of zero-dimensional carbon nanomaterials recognized for their unique fluorescent properties, demonstrating significant potential across various fields. However, their application in the petroleum industry has not been adequately explored. This paper synthesized coal-based CQDs (coal dots) using a chemical oxidation method, achieving a mass yield of over 90 %. The coal dots had an average diameter of 2.4 nm and carried hydroxyl and carboxylic acid groups, making them hydrophilic and negatively charged. Their potential application as an oil displacement agent for enhanced oil recovery (EOR) was examined, resulting in an incremental oil recovery of 12.0 % in low-permeability rocks and 4.5 % in tight rocks. Our exploration of solid-fluid and fluid-fluid interactions suggested that wettability alteration, driven by the repulsive structural forces within the framework of surface forces, contributed to the EOR achieved with coal dots. The integration of coal dots into EOR can lead to the effective and sustainable development of both petroleum and coal resources.
研究领域:
石油工程
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纳米材料科学
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化学工程
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能源资源工程
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胶体与界面科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Hui Wen,Lizhu Liang,Nuanyuan Xu,Changkun Liu
Removing oil pollution from seawater prior to its desalination helps in saving time and cost. In this study, a novel superhydrophobic cotton fabric with photothermal effect and self-cleaning property was prepared via the incorporation of Fe 3+ -polydopamine (PDA) coating and carbon nanotubes (CNTs) on the fabric surface (termed as CF@PDA/CNT), followed by the grafting of (3-glycidyloxypropyl)trimethoxysilane (GPTMS) and octadecylamine (ODA) (termed as the CF@PDA/CNT-GPTMS-ODA). CF@PDA/CNT exhibits good desalination with photothermal conversion capability on the high-salinity water (evaporation rate > 1.11 kg/(m 2 ⋅h)), providing an effective basis for the preparation of the photothermal-assisted oil–water separator (CF@PDA/CNT-GPTMS-ODA), with which the crude oil permeation time was improved from 58 s without light to only 9 s with light, showing the pronounced contribution of the photothermal effect on the oil permeation. In addition, CF@PDA/CNT-GPTMS-ODA used in the form of oil skimmer and underwater oil absorbent demonstrates excellent oil–water separation performance (separation efficiency > 97 %). Notably, the fabric can isolate various oil phases from both pure water and simulated seawater, with separation efficiencies exceeding 97 %. This novel material offers a promising solution for addressing complex water pollution issues and introduces a potential approach for integrating photothermal conversion effect into the field of oil–water separation.
研究领域:
材料科学
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环境工程
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
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2019
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IF 3.771
Yi Wang,Jinrong Wu,Zhenxing Cao,Changshu Ma,Qingbo Tong,Jiangbo Li,Hanchao Liu,Jing Zheng,Guangsu Huang
Designing a homogeneous network is an efficient way to improve the mechanical properties of hydrogels. However, the homogeneous hydrogels usually have negligible notch-insensitivity due to the lack of effective energy dissipation, limiting their practical applications in many fields. Herein, we provide a straightforward method to prepare a category of tough and notch-insensitive polyacrylamide hydrogels crosslinked by a novel cross-linker with multiple vinyl functional groups (TA). Due to the multifunctionality of TA , a relatively uniform network with the coexistence of physical cross-links is constructed by the steric effect between chain radicals on TA molecules during the polymerization. The uniform network distributes stress evenly while the physical cross-links lead to viscoelastic dissipated energy under external force. As a result, the hydrogels achieve an ultrastretchability of 2400% and a tensile toughness of 4.33 MJ/m 3 . Even with a notch of 10 mm, the hydrogels can still be stretched to a strain of 20, indicating an impressive notch-insensitivity. Meanwhile, the hydrogels exhibit high fatigue resistance and good self-recovery. This research offers a facile strategy for designing high-performance hydrogels and may pave the way for their practical application in emerging fields, such as oil displacement agent and artificial cartilage .
研究领域:
材料科学
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聚合物化学
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生物医学工程
✓ 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）