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Synthesis and Characterization of Poly (Aryl Ether Ketone) Containing Phthalazinone and Naphthalene Moieties

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Chinese chemical Letters 2000年第9期11卷 777-778页

作者： Ye GAO Xi Gao JIAN Jin Yan WANG Department of polymer science, college of{2. engineering, Dalian university of Technology, Dalian 116012 Dalian Univ Technol Coll Chem Engn Dept Polymer Sci Dalian 116012 Peoples R China

A novel poly (aryl ether ketone) (PPEK) containing phthalazinone and naphthalene moieties was prepared by the nucleophilic displacement reaction of 4-(4-hydroxyphenyl) (2.) phthalazin-1-one with 1-chloro-4-(4-chlorobe... 详细信息

关键词： engineering thermoplastics poly (aryl ether ketone) synthesis

SYNTHESIS AND PROPERITIES OF A FLUORENE-BASED EPOXY RESIN

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SYNTHESIS AND PROPERITIES OF A FLUORENE-BASED EPOXY RESIN

Effects of water phase concentration on the emulsion polymerization of polyaniline

第五届国际高分子化学学术讨论会

作者： Tiantian Feng Li Han Guobin Li Jun Wang Wenbin Liu college of materials{2. and chemical engineering harbin engineering university harbin 150001 China

＜正＞Fluorene-based epoxy resins are a family of high performance *** introduction of fluorene moieties endows them many desirable properties,such as high thermal stability and good moisture resistance.1,2

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来源： cnki会议评论

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Journal of Central South university of Technology 2001年第2期8卷 140-142页

作者： PAN Chun yue 1,CHEN Zhen hua 2.HUANG Yong li 1,HUANG Ke long 1 (1.college of Chemistry and chemical{2., Central South university, Changsha 410083, China 2.Department of materials science and{2., Central South university, Cha 1. college of Chemistry and chemical{2. Central South University 410083 Changsha China 2. Department of materials science and{2. Central South University 410083 Changsha China

The emulsion polymerization of aniline in three phase system of xylene functionalized protonic acid water was carried out using (NH 4) 2. 2. 4 as oxidant. The influences of water phase concentration on the viscosity, conductivity, transmittance of polyaniline(PAN) latex and its powders were studied. The results show that the properties of PAN prepared through the emulsion polymerization are influenced by the amount of water used in the polymerization. The morphology of PAN varies with the water phase concentration used in the polymerization, which may result in the change of properties of PAN latex and its powders. When the volume fraction of water (φ) is about 2.% 30%, the prepared PAN powder has higher conductivity, and the PAN latex has appropriate viscosity and particle size. The consumption of xylene was reduced at high φ value.

关键词： polyaniline emulsion polymerization water concentration property

Structure and Pozzolanic Activity of Calcined Coal Gangue during the Process of Mechanical Activation

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Journal of Wuhan university of Technology(materials{2.) 2009年第2期24卷 326-329页

作者：郭伟 Department of material engineering Yancheng Institute of Technology Institute of material science and{2. Nanjing University of Technology

On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XRD, FTIR, NMR, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.

关键词： coal gangue mechanical activation structure NMR tetrahedron

Large second-order optical nonlinearities of s-triazine derivatives: View from micro molecules to macro crystals

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science China Chemistry 2005年第3期48卷 203-209页

作者： FANG Qi1, LEI Hong2. CUI Yuezhi3, HUANG Zhenli4, XUE Gang1 & YU Wentao1 1. State Key Laboratory of Crystal materials, Shandong university, Jinan 2.0100, China 2. School of Information{2. and engineering, Shandong university, Jinan 2.0100, China 3. Department of chemical engineering, Light Industry college of Shandong, Jinan 2.0100, China 4. Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong university of{2. and Technology, Wuhan 430074, China 1. State Key Laboratory of Crystal materials Shandong University 250100 Jinan China 2. School of Information science and engineering Shandong University 250100 Jinan China 3. Department of chemical engineering Light Industry College of Shandong 250100 Jinan China 4. Key Laboratory of Biomedical Photonics Ministry of Education Huazhong University of Science and Technology 430074 Wuhan China

Three s-triazine derivatives have been synthesized and their structures been de-termined. These are Compound I: 2.4-dimethyl-6-(p-N,N-dimethylaminostyryl)-s-triazine (abbre-viated to NMe-1), Compound II: 2.4-dimethyl-6-(p-N,N-diethylaminostyryl)-s-triazine (to NEt-1), and Compound III: 2.methyl-4,6-bis(p-N,N-dimethylaminostyryl)-s-triazine (NMe-2.. NMe-1 and NEt-1 molecules belong to the D-π-A type with a one-dimensional charge-transfer character. NMe-1 crystallizes to centrosymmetric P1 space group, while NEt-1 to non-centrosymmetric polar Cc space group with all of the molecular charge-transfer axes taking the same orientation. Under the irradiation of 1064 nm fundamental laser, NEt-1 powder crystals radiate a 2.order harmonic light with an intensity 46.8 times that of urea. The Λ typed NMe-2.molecule, which has a two-dimensional charge-transfer character, crystallizes to polar P2. space group. Its powder crystals exhibit a 2.order harmonic intensity 46.2.times that of urea. The quantum chemical cal-culations and tensor analyses have been carried out to reveal the dependence of the macro 2.order nonlinear optical (NLO) efficiency on the micro 2.order NLO coefficients (β) and on the crystalline packing styles.

关键词： s-triazine derivatives, synthesis, structure, SHG intensities of crystals, βvalues of molecules.

Solvothermal synthesis and ferromagnetic property of bamboo-shoot-like oriented carbon micromaterials

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Chinese science Bulletin 2010年第33期55卷 3838-3841页

作者： YANG YongZhen1,2.LIU XuGuang1,3,REN WenFang1,3,QIU Li1,3 & XU BingShe1,2.1Key Laboratory of Interface science and engineering in Advanced{2.s(Taiyuan university of Technology),Ministry of Education,Taiyuan 03002.,China 2.4} of{2.s science and engineering,Taiyuan university of Technology,Taiyuan 03002.,China 3college of Chemistry and chemical engineering,Taiyuan university of Technology,Taiyuan 03002.,China Key Laboratory of Interface science and engineering in Advanced{2.s (Taiyuan university of Technology) Ministry of Education Taiyuan 030024 China college of materials{2. and engineering Taiyuan University of Technology Taiyuan 030024 China college of Chemistry and chemical{2. Taiyuan University of Technology Taiyuan 030024 China

Bamboo-shoot-like oriented carbon micromaterials(BOCMs)were synthesized by a solvothermal method at 450°C for 4 h using deoiled asphalt(DOA)as carbon source,toluene as solvent,ferrocene as catalyst precursor and amphiphilic triblock copolymer P12. as *** morphology and structure of the products were characterized by X-ray diffraction,field emission scanning electron microscopy,high resolution transmission electron microscopy and Fourier transform infrared *** results reveal that the obtained products have good distribution with uniform diameters of about 0.5 ?m and the lengths of 1-1.5 μm,and hydrogen-carbon bonds are observed on the surface of *** growth mechanism of BOCMs is discussed,in which that the catalysis of ferrocene and the dispersion and assembly of the aromatic molecules of DOA directed by P12. are critical to the formation of the *** coercivity value(2.1.91 Oe)from the measurement of a vibrating sample magnetometer shows that the BOCMs have an obvious ferromagnetic behavior.

关键词：溶剂热合成铁磁性碳源场发射扫描电子显微镜高分辨透射电子显微镜傅里叶变换红外光谱两亲嵌段共聚物振动样品磁强计

Microstructure evolution of single crystal copper wires in cold drawing

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science China(Technological sciences) 2007年第6期50卷 736-748页

作者： CHEN Jian1,2. YAN Wen1,2. WANG XueYan2.& FAN XinHui2.1 Department of Applied Physics, Northwestern Polytechnical university, Xi’an 710072. China 2.School of material{2. and chemical engineering, Xi’an Technological university, Xi’an 710032. China 1. Department of Applied Physics Northwestern Polytechnical University Xi’an 710072 China 2. School of material science and{2. engineering Xi’an Technological University Xi’an 710032 China

The deformation microstructure evolution of single crystal copper wires produced by OCC method has been studied with the help of TEM, EBSD; OM. The results show that there are a small number of dendrites; twins in the undeformed single crystal copper wires. However, it is difficult to observe these dendrites in deformed single crystal copper wires. The structure evolution of deformed single crystal copper wires during drawing process can be divided into three stages. When the true strain is lower than 0.94, macroscopic subdivision of grains is not evident,; the microscopic evolution of deformed structure is that the cells are formed; elongated in drawn direction. When the true strain is between 0.94; 1.96, macroscopic subdivision of grains takes place,; the number of microbands located on {111}; cell blocks is much more than that with the true strain lower than 0.94. When the true strain is larger than 1.96, the macroscopic subdivision of grains becomes more evident than that with the true strain between 0.94; 1.96,; S-bands structure; lamellar boundaries will be formed. From EBSD analysis, it is found that part of 100 texture resulting from solidifying is transformed into 111; 112.due to shear deformation, but 100 texture component is still kept in majority. When the true strain is 0.94, the misorientation angle of dislocation boundaries resulting from deformation is lower than 14°. However, when the true strain arrives at 1.96, the misorientation angle of some boundaries will be greater than 50°,; the peak of misorientation angle distribution produced by texture evolution is located in the range between 2.°; 30°.

关键词： single crystal copper wires, deformation structure, electron backscattering diffraction, transmission electron microscopy

Supporting of Nickel(Ⅱ) Acenaphthenediimine with Free Amino Group for Ethylene Polymerization

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Journal of Wuhan university of Technology(materials{2.) 2010年第2期25卷 260-264页

作者：胡扬剑 Department of Chemistry and chemical engineering Huaihua College

Bis （4-（4-amino-3, 5-diethylbenzyl）-2. 6-diethylphenylimino） acenaphthene] di- chloronickel （NiLCl2. was prepared and supported on SiO2.modified by methyl trichlorsilane（S-1） and on SiO2.MgCl2.TiCl4 （S-2. respectively. Two supported catalysts S-1 and S-2.used as catalysts for ethylene polymerization were studied and the influences of various polymerization conditions, including the polymerization temperature, cocatalysts, Al/Ni molar ratio on the catalytic activity, branching degree and branch length of PE were also investigated. The experimental results show that the supported catalysts exhibit higher catalytic activity for ethylene polymerization, the highest catalytic activity of S-1 using AlEt2.l as cocatalyst at 50 ℃, reaching 5.8×10^5gPE/molNi·h, and needed lower Al/Ni molar ratio compared to homogeneous analogue.

关键词： nickel diimine complex supported catalyst branched polyethylene diethylaluminium chloride

Effects of NaNbO_3-Co_2._3 Co-additive on the Properties of PZN-PZT Ceramics

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Journal of Wuhan university of Technology(materials{2.) 2007年第4期22卷 722-724页

作者：邓毅华 college of material{2. and engineering South China University of Technology Department of Electronic science and Technology Huazhong University of Science and TechnologyWuhan 430074China

NaNbO3-Co2.3 co-added PZN-PZT （PZCNNT） ceramics were prepared using conventional solid state reaction. The piezoelectric and dielectric properties were measured. The experimental results show that the addition of 0.3mo1% Co2.3 leads to low dielectric loss （tgδ） in PZCNNT ceramics and the proper addition of NaNbO3 not only improves piezoelectric properties but also decreases intensively dielectric loss and mechanical loss. The optimal ceramic having d33=310 pC/N, kp=0.59, εr=985, tgδ=0.0034, Qm=1380 was obtained.

关键词： PZN-PZT piezoelectric constant dielectric constant dielectric loss