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The New Plating Process on Plastics

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材料热处理学报 2004年第05B期25卷 1119-1121页

作者： Makoto Imamura Jun Okada Kazuya Satoh Okuno chemical industries Co. Ltd JapanOkuno Chemical Industries Co. Ltd JapanOkuno Chemical Industries Co. Ltd Japan

This process does not use general electroless plating solution containing formaldehyde(carcinogen) and phosphate(the object of waste water regulation). Furthermore, we succeeded in developing a new electroless copper plating solution which is usable semi-permanently by using the special reducing agent. The electroless deposition forms a very thin conductive film on substrate. Therefore, it can prevent some appearance defects (e.g. pits, pin-holes, laminations and inclusions) that occur in the conventional ones. In addition, it is possible to eliminate electroplating of copper from the process by applying the exclusive nickel solution in electroplating. Therefore, the obtained metal parts can be recycled as high quality stainless steel. Given this copper electroplating-free process, 25 u m-thick nickel deposition at the stage of electroplating, at least, enables the metal layers to show properties as versatile as those of the conventional(its total thickness is 25 n m in the comparative conventional process).

关键词：电镀再循环调磷调氮合成树脂

Novel hot-melting hyperbranched poly(ester-amine) bearing self-complementary quadruple hydrogen bonding units

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Chinese chemical Letters 2008年第7期19卷 868-870页

作者： Yi Peng Qiu Li Ming Tang Yu Wang Shi You Guan Laboratory of Advanced Materials Department of Chemical Engineering Tsinghua University Beijing 100084 PR China sanyo chemical industries LTD. Kyoto 605-0995 Japan

Hyperbranched poly（amine-ester）s bearing self-complementary quadruple hydrogen bonding units display excellent mechanical and temperature-dependent melt rheological properties, which make them suitable as novel hot-... 详细信息

关键词： Hyperbranched polymer Thermal sensitive Hydrogen bond

Developement of Spherical Polyurethane Beads

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复旦学报（自然科学版） 2005年第5期44卷 819-820页

作者： K. Maeda H. Ohmori H. Gyotoku sanyo chemical industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapanSanyo Chemical Industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapanSanyo Chemical Industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapan

We established a new method to produce the spherical polyurethane beads which have narrower distribution of particle size. This narrower distribution was achieved by the polyurethane prepolymer which contains ketimine as a blocked chain-extending agent. Firstly, the prepolymer is dispersed into the aqueous solution containing surfactant. Secondaly, water comes into the inside of prepolymer as oil phase. Thirdly, ketimine is hydrolyzed to amine, and amine reacts with prepolymer immediately to be *** spherical polyurethane beads are very suitable for automotive interior parts especially for instrument panel cover sheet producing under the slush molding method, because of good process ability, excellent durability to the sunlight and mechanical properties at low temperature. See Fig. 1 ,Fig. 2 and Fig. 3 (Page 820).

关键词：聚亚安酯球形珠酮亚氨有限分布封闭环

Ursane derivatives isolated from leaves of Hylocereus undatus inhibit glycation at multiple stages

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Chinese Journal of Natural Medicines 2018年第11期16卷 856-865页

作者： ROSA MARTHA Pérez-Gutiérrez SUSANA GABRIELA Enriquez-Alvirde Research Laboratory of Natural Products School of Chemical Engineering and Extractive Industries National Polytechnic Institute

The present study was designed to evaluate the therapeutic potential of bioactive compounds from chloroform extract of the leaves of Hylocereus undatus in the formation of advanced glycation end products(AGEs) in vitro. Bioactivity-guided fractionation of chloroform extract from Hylocereus undatus afforded two novel 12-ursen-type triterpenes, 3β, 16α, 23-trihydroxy-urs-12-en-28-oic acid(1) and 3β, 6β, 19α, 22α-tetrahydroxy-urs-12-en-28-oic acid(2), as well as four known triterpenes 2α, 3β, 23-tetrahydroxy-urs-11-en-28-oic acid(3), 3β-acetoxy-28-hydroxyolean-12-ene(4), 3β, 16α-dihidroxyolean-12-ene(5) and 3β-acetoxy-olean-12-ene(6). Our results revealed that triterpenes 1–3 were able to inhibit the formation of AGEs in all tested assays. The data indicated that the triterpenes had inhibitory activity at the múltiple stages of glycation and that there might be a high potential for decreasing protein oxidation and protein glycation that can enhance glycative stress in diabetic complications.

关键词： Hylocereus undatus Advanced glycation end product Triterpenes

Vanadium-Doped Magnesium Oxide Nanoparticles Formation in Presence of Ionic Liquids and Their Use in Photocatalytic Degradation of Methylene Blue

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Acta Metallurgica Sinica(English Letters) 2016年第3期29卷 253-264页

作者： Harshad R.Patil Z.V.P.Murthy Department of chemical Engineering S.V.National Institute of Technology R&D Division Hazira Manufacturing DivisionReliance Industries Limited

Magnesium oxide（MgO） is one of the metal oxides having unique properties with numerous potential industrial *** this study,MgO and vanadium-doped MgO nanoparticles were synthesized by sol–gel method in 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF_4] and 1-octyl-3-methylimidazolium tetrafluoroborate [OMIM][BF_4] ionic ***-doped MgO nanoparticles exhibited nanosphere and nanorod morphologies with 40–80 nm in particle size,primarily due to the influence of ionic liquids as demonstrated by high-resolution scanning electron microscopy and transmission electron *** of nanoparticles were also studied by thermal gravimetric analysis,X-ray diffraction and energy-dispersive X-ray *** ability of synthesized nanoparticles was evaluated for methylene blue（MB） in specially designed UV *** is found to be dependent on doping,and particle characteristics change due to the influence of ionic *** ionic liquid-assisted vanadium-doped MgO nanoparticles showed good reusability under UV irradiation and MB degradation ability under visible light.

关键词： Ionic liquid Vanadium pentoxide Magnesium oxide Sol–gel Photocatalytic activity

Preparation and thermal treatment of Pd/Ag composite membrane on a porousα-alumina tube by sequential electroless plating technique for H_2 separation

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Journal of Natural Gas Chemistry 2008年第4期17卷 321-326页

作者： E.Navaei Alvar M.Reza Golmohammadi M.Rezaei H.Navaei Alvar A.Mardanloo S.Habibzad Nouhian M.Didari Department of Mining & Metallurgy Engineering Amirkabir University of Technology Sarv Oil & Gas industries Development Co Department of chemical Engineering Faculty of EngineeringUniversity of Kashan

Pd/Ag/α-Al2O3 composite membranes were prepared by sequential electroless plating technique. The prepared membranes were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy, and inductively coupled plasma atomic emission spectroscopy techniques （ICP-AES）. Effects of annealing time, Ag content, and air treatment on the hydrogen permeation flux and morphology of the alloys were investigated. The results of the investigation showed that the prepared type of tube had a good potential as substrate for membrane preparation. In addition, a uniform defect-free alloy was prepared by annealing at 550 ℃ in H2 atmosphere. The permeation results showed an increase in H2 permeation flux by increasing the Ag content and the annealing time. In addition, the air treatment of the prepared membranes at 400 ℃ for 1 h changed the morphology of the alloy and substantially enhanced the hydrogen flux.

关键词： Pd/Ag composite membrane electroless plating thermal treatment

Crystallization thermodynamics of 2,4(5)-dinitroimidazole in binary solvents

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Chinese Journal of chemical Engineering 2023年第5期57卷 173-182页

作者： Pengbao Lian Lizhen Chen Dan He Guangyuan Zhang Zishuai Xu Jianlong Wang School of chemical Engineering and Technology North University of ChinaTaiyuan 030051China Shanxi North Xingan chemical Industry Co.Ltd China North Industries Group Corporation LimitedTaiyuan 030008China Gansu Yinguang chemical Industry Group Co. LtdBaiyin 730900China

2,4(5)-Dinitroimidazole(2,4(5)-DNI)is an important organic intermediate,and itself can also be used for energetic *** this work,the solubility of 2,4(5)-DNI in(methanol+water,acetonitrile+water,acetone+water)binary solvents were measured by using a dynamic test method from 278.15 K to 323.15 K under 101.1 k *** Jouyban–Acree model,van't Hoff–Jouyban–Acree model,Apelblat–Jouyb an–Acree model,Ma model,and Sun model were used to correlate the experimental *** values of relative average deviation(RAD)and root-mean-square deviation(RMSD)were very small,indicating that the error between the experimental value and the correlated value was very *** thermodynamic parameters such as dissolution enthalpy,dissolution entropy and Gibbs energy were calculated based on solubility ***-purity of 2,4(5)-DNI was efficiently obtained by using cooling and dilution crystallization method.

关键词： 2 4(5)-Dinitroimidazole Solid-liquid equilibrium Solubility model Three thermodynamic parameters Cooling and dilution crystallization

Flow Regimes in Bubble Columns with and without Internals: A Review

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Fluid Dynamics & Materials Processing 2024年第2期20卷 239-256页

作者： Ayat N.Mahmood Amer A.Abdulrahman Laith S.Sabri Abbas J.Sultan Hasan Shakir Majdi Muthanna H.Al-Dahhan Department of chemical Engineering University of Technology-IraqBaghdadIraq chemical and Petroleum industries Engineering Department Al-Mustaqbal University CollegeBabylonIraq Department of chemical and Biochemical Engineering Missouri University of Science and TechnologyRollaUSA

Hydrodynamics characterization in terms ofﬂow regime behavior is a crucial task to enhance the design of bubble column reactors and scaling up related *** review presents recent studies on the typicalﬂow regimes established in bubble *** effort is also provided to introduce relevant deﬁnitions pertaining to thisﬁeld,namely,that of“void fraction”and related(local,chordal,cross-sectional and volumetric)*** studies involving different parameters that affect design and operating conditions are also discussed in *** the second part of the review,the attention is shifted to cases with internals of various types(perfo-rated plates,bafﬂes,vibrating helical springs,mixers,and heat exchanger tubes)immersed in the bubble *** is shown that the presence of these elements has a limited inﬂuence on the global column ***,they can make the homogeneousﬂow regime more stable in terms of transition gas velocity and transi-tion holdup *** last section is used to highlight gaps which have not beenﬁlled yet and future directions of investigation.

关键词： Hydrodynamics ﬂow regime bubble column heat-exchanging internals

Mussel-inspired PTW@PDA composites for developing high-energy gun propellants with reduced erosion and enhanced mechanical strength

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Defence Technology（防务技术） 2024年第2期32卷 675-690页

作者： Xijin Wang Zhitao Liu Pengfei Sun Feiyun Chen Bin Xu Xin Liao School of Chemistry and chemical Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuChina China North industries Group Corporation Limited Beijing 100045China

The severe erosion and inadequate mechanical strength are prominent challenges for high-energy gun *** address it,novel PTW@PDA composites was prepared by polydopamine(PDA)-modifying onto potassium titanate whisker(PTW,K_(2)Ti_(6)O_(13)),and after was incorporated into gun propellant as erosion-reducing and mechanical-reinforcing *** interfacial characterizations results indicated that as-prepared PTW@PDA composites exhibits an enhanced surface compatible with propellant matrix,thereby facilitating their dispersion into propellants more effectively than raw PTW *** to original propellants,PTW@PDA-modified propellants exhibited significant less erosion,with a Ti-Kbased protective coating being detected on the eroded *** 0.5 wt%and 1.0 wt%addition of PTW@PDA significantly improved impact,compressive and tensile strength of *** the inevitably reduction in relative force,PTW@PDA slightly increase propellant burning rate while exerting little adverse impact on propellant dynamic *** strategy can provide a promising alternative to develop high-energy gun propellant with less erosion and more mechanical strength.

关键词： High energy gun propellant Potassium titanate whiskers Polydopamine modification Erosion inhibitors Mechanical reinforcing fillers