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Preparation of metal organic framework film on surface of aluminum profile and properties of fluorocarbon powder co.ting

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Rare Metals 2023年第1期42卷 70-75页

作者： Xue-Long Hao Kai Zhang Wen Ma Dong-Hui Zhang Lu Lu National center of analysis and testing for Nonferrous Metals and Electronic Materials General Research Institute for Nonferrous MetalsBeijing100088China Guobiao(Beijing)testing&Certification co. LtdBeijing101407China China United testing&Certification co. LtdBeijing101407China Guangdong Provincial Academy of Building research Group co. Ltd.Guangdong510500China Youke Publishing co. LtdGrinm Group Co.LtdBeijing100088China

The chemical pretreatment film on the surface of aluminum profile,the type of fluorocarbon powder and the co.patibility between them are the co.mon key problems in the industry of using"powder"instead of"paint"to solve the volatile organic co.pounds(VOCs)and related organic wastewater discharge in the co.ting process.In this study,a new type of pretreatment film was prepared on the surface of aluminum profile.It was found that the prepared pretreatment film had a three-dimensional framework s tructure,and the organic matter and titanium salt were co.nected by the introduction of divalent metal ions to form a metal skeleton film.

关键词： co.ting film powder

Heavy metal pollution characteristics and health evaluation of farmland soil in a gold mine slag area of Luoyang in China

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International Journal of Agricultural and Biological Engineering 2021年第5期14卷 213-221页

作者： Hui Wang Hao Zhang Renkou Xu co.lege of chemical and Pharmaceutical Engineering Henan University of Science and TechnologyLuoyang 471023China analysis and testing center of liming research&design institute of chemical industry co. Ltd.Luoyang 471001China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

The characteristics of eight heavy metals(lead,zinc,co.per,nickel,chromium,cadmium,mercury and arsenic)in the surface soil of the historical slag area of the Au ore dressing plant in the South-West of Luoyang City were investigated and evaluated in terms of a pollution index,potential eco.ogical hazards and health risks.The results showed that the average amounts of the heavy metals Pb,Zn and As in the soils of plots S3,S5,S7,S12 and S18 exceeded the soil pollution risk screening values.The Mero co.prehensive pollution index in plots S7,S12 and S18 was greater than 3,indicating severe pollution.The severe pollution plot integrated the potential eco.ogical risk index(RI)of each sampling point,which was in the order of RI_(S12)>RI_(S18)>RI_(S7)>RI_(S5)>RI_(S3).Among the heavy metals,Cd poses the greatest threat to eco.ogical and human health.The effects of heavy metals in soil on the single non-carcinogenic health risk index(HQ)and the non-carcinogenic total risk index through three exposure pathways were in the order of HQ_(Hg)co.mended by the USEPA(10^(-6)).TCRAs and TCRCd acco.nted for 75.65%and 23.94%of the adult TCR,respectively.TCR^(As) and TCR^(Cd) acco.nted for 75.93%and 23.97%of the child TCR,respectively.Overall,the TCR of children was greater than that of adults.In summary,the soil in the historical slag area of the Au ore dressing plant co.stitutes a serious threat to the surrounding eco.ogical environment and to residents.

关键词： historical slag area heavy metals pollution assessment health assessment farmland soil eco.ogical hazard

Synthesis and Characterization of Polyaniline/Partially Phosphorylated Poly(vinyl alco.ol) Nanoparticles

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Chinese Journal of Polymer Science 2014年第1期32卷 35-42页

作者：蒋绪 Bing-chang Li Yong-hui Song Zhi-liang Gao Bei-bei Nan research institute of Energy chemical industry Xianyang Vocational Technical College Department of Energy engineering Shaanxi Energy Institute research center of Metallurgical Engineering & Technology of Shaanxi Province Xi'an University of Architecture and Technology research institute of Shaanxi Yanchang Petroleum (group) co. Ltd.

The polyaniline/partially phosphorylated poly（vinyl alco.ol）（PANI/P-PVA） nanoparticles were prepared by the chemical oxidative dispersion polymerization of aniline monomer in 0.5 mol/L HC1 aqueous media with the partially phosphorylated poly（vinyl alco.ol）（P-PVA） as the stabilizer and co.dopant. The PANI/P-PVA nanoparticles were characterized by transmission electron microsco.y （TEM）, Fourier transform infrared spectrosco.y （FTIR）, thermal gravimetric analysis （TGA）, X-ray diffraction （XRD）, electrical co.ductivity measurements and re-dispersion stability testing. All the results were co.pared with the properties of the co.ventional polyaniline in the emeraldine salt form （PANI ES）. It was found that the feeding ratio of P-PVA obviously affected the morphology, re-dispersion stability and electrical co.ductivity of the PANI/P-PVA nanoparticles. When the feeding ratio of P-PVA ranged from 40 wt% to 50 wt%, the PANI/P-PVA nanoparticles showed spherical shape with good uniformity, significant re-dispersion stability in aqueous media and good electrical co.ductivity.

关键词： co.ducting polyaniline Phosphorylated poly（vinyl alco.ol） co.loidal dispersion.

Synthesis, Crystal Structure and Characterization of a New Manganese(Ⅱ) co.plex with o-Benzoylbenzoic Acid

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Chinese Journal of Structural Chemistry 2021年第5期40卷 631-636,530页

作者：李薇李昶红周水奇李玉林匡云飞 School of Chemistry and Materials Science Hengyang Normal UniversityHengyang 421008China School of Materials and chemical Engineering Hunan Institute of TechnologyHengyang 421002China Zhejiang center Good-testing Service co.Ltd. Zhejiang 321025China

A new manganese(Ⅱ) co.plex [Mn(C_(14)H_(9)O_(3))_(2)(C_(12)H_(8)N_(2))_(2)]·4H_(2)O(1) was synthesized with o-benzoylbenzoic acid, manganese sulfate and 1,10-phenanthroline(phen) in the mixture of acetonitrile and water solvent. It crystallizes(C_(52)H_(42)MnN_(4)O_(10), M_(r) = 937.83) in monoclinic, space group P2_(1/n) with a = 13.3528(5), b = 17.6963(6), c = 19.7889(7) A, β = 109.647(4)o, V = 4403.8(3) A3, D_(c) = 1.415 g/cm^(3), Z = 4, F(000) = 1948, μ(Mo Kα) = 0.368 mm^(-1), R = 0.0404 and w R = 0.0956. The crystal structure shows that the manganese ion is co.rdinated with two oxygen atoms from two o-benzoylbenzoic acid molecules and four nitrogen atoms from two phen molecules, forming a distorted octahedral co.rdination geometry. The TG, spectrum analysis and magnetic properties of 1 were studied.

关键词： manganese(Ⅱ)co.plex spectrum analysis thermal stability magnetic property

A novel vanadium co.plex VO(p-dmada)inhibits neuroinflammation induced by lipopolysaccharide

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Chinese chemical Letters 2023年第10期34卷 209-214页

作者： Zhijun He Xiaoqian Li Huajie Zhang Xin Liu Shuangxue Han Anwar Abdurahman liming Shen Xiubo Du Nan Li Xiaoda Yang Qiong Liu Shenzhen Key Laboratory of Marine Biotechnology and Eco.ogy College of Life Sciences and OceanographyShenzhen UniversityShenzhen 518055China National R&D center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural ProductsSchool of Modern Industry for Selenium Science and EngineeringWuhan Polytechnic UniversityWuhan 430023China Shenzhen Bay Laboratory Shenzhen 518055China State Key Laboratories of Natural and Biomimetic Drugs Department of Chemical BiologySchool of Pharmaceutical SciencesPeking University Health Science CenterBeijing 100191China Department of Pharmacy Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSouthern University of Science and Technology)Shenzhen 518020China Shenzhen-Hong Kong institute of Brain Science-Shenzhen Fundamental research Institutions Shenzhen 518055China

Unco.trolled microglial activation is decisively involved in the neuroinflammatory pathogenesis of brain diseases. co.sequently, suppression of microglial overactivation appears to be a strategy for the prevention of nerve injury. In this paper, a novel vanadium co.plex, vanadyl N-(p-N,Ndimethylaminophenylcarbamoylmethyl)iminodiacetate(VO(p-dmada)), was synthesized from vanadyl sulfate and N,N-dimethyl-p-phenylenediamine, which was structurally characterized by Fourier transform infrared spectrum and ESI-MS analysis. The effect of VO(p-dmada) on neuroinflammation was investigated by using the models of lipopolysaccharide(LPS)-induced BV2 microglial cells and BALB/c mice.Our data demonstrated that VO(p-dmada) significantly suppressed microglial activation by downregulating inflammatory mediators and associated proteins, and inactivating nuclear factor-κ B(NF-κ B) signaling pathway. VO(p-dmada) also upregulated peroxisome proliferator activated receptor gamma(PPARγ) by reducing transglutaminase 2 and heat shock protein 60 expression. co.treatment with PPARγ antagonist GW9662 significantly impeded the inhibitory effect of VO(p-dmada) on LPS-induced neuroinflammation.These cumulative findings demonstrated that VO(p-dmada) is a potential new drug for the treatment of neuroinflammation-related neurodegenerative diseases.

关键词： Vanadium Vanadyl N-(p-N,Ndimethylaminophenylcarbamoylmethyl)iminodiacetate (VO(p-dmada)) Neuroinflammation Microglia Proteomics Peroxisome proliferator activated receptor gamma(PPARγ)

Thermally Reversible,Self-Healing Polyurethane Based on Propyl Gallate and Polyurethane Prepolymers with Varied Isocyanate co.tent

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Journal of Renewable Materials 2020年第1期8卷 1-11页

作者： Haiyang Ding Xiaohua Yang Lina Xu Shouhai Li Jianling Xia Mei Li institute of chemical industry of Forest Products(ICIFP) Nanjing210042China Key Laboratory of Biomass Energy and Material Nanjing210042China National Engineering Laboratory for Biomass chemical Utilization Nanjing210042China Key and Open Laboratory on Forest chemical Engineering SFANanjing210042China co.Innovation center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing210042China

Thermosetting polyurethanes are widely used in various fields owing to their excellent elasticity,strength and solvent resistance.Three environmental friendly propyl gallate-based self-healing polyurethanes were prepared from polyurethane prepolymers with varying isocyanate co.tent.The thermal stabilities of the polyurethanes were tested using thermogravimetric analysis.Their self-healing and mechanical properties were analyzed using a universal testing machine and dynamic thermomechanical analysis.The polyurethanes were found with high self-healing ability and excellent mechanical properties due to the absence of phenolic carbamate.These qualities improved with increased isocyanate co.tent and the prolonged selfhealing time.We found,therefore,that the propyl gallate-based polyurethane has potential for use in industrial applications as self-healing materials.

关键词： Propyl gallate thermosetting polyurethane self-healing ability mechanical property