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Chinese Journal of Polymer Science 2012年第1期30卷 72-81页

作者： Wei-cheng Xiong li Chen de-yi Wang Fei Song Yu-zhong Wang Center for degradation an-d Flame--Retardant Polymeric Materials College of-Chemistry State Key Laboratory of Polymer Materials Engineering National Engineering Laboratory of Eco-Friendly Polymeric Materials （Sichuan） Sichuan University Chengdu 610064 China

The synergistic effect of phosphorus oxynitride（PON） with a novolac-based char former modified by salification （NA-metal salt） on the flame retardance of polyamide 6（PA6） was *** this purpose,various flame-retardant PA6 systems were melt-compounded with PON,PON/NA,PON/NA-V_2O_5 and PON/NA-Fe_2O_3,and their flame retardance was evaluated by measuring the limiting oxygen index（LOI） values and UL-94 vertical burning *** results showed that,compared with the PA6/PON/NA system,the combination of two char formers（NA-V_2O_5,NA-Fe_2O_3） with PON could obviously improve the char formation and flame retardance of *** flame retardance and cone calorimetric analyses showed the stronger synergism as well as the better flame retardant performance of PON/NA-Fe_2O_3 flame retardant system. The effects of different char formers on the flame retardance and thermal stability of this system were also discussed.

关键词： Polyamide Flame retardance Novolac resin Synergistic effect

Mechanism and prediction of failure of diamond films deposited on various substrates by HFCVD

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中国有色金属学会会刊：英文版 2004年第z1期14卷 229-233页

作者： ZHOU ling-ping SUN Xin-yuan li Shao-lu li de-yi CHEN Xiao-hua College of Material Science and Engineering Hunan University Changsha 410082 China College of Material Science and Engineering Hunan University Changsha 410082 China College of Material Science and Engineering Hunan University Changsha 410082 China College of Material Science and Engineering Hunan University Changsha 410082 China College of Material Science and Engineering Hunan University Changsha 410082 China

Diamond films were deposited on the WC-Co cemented carbide and Si3N4 ceramic cutting tool substrates by hot-filament-assisted chemical vapour deposition. The adherence property of diamond films was estimated using the critical load (Pcr) in the indentation test. The adhesive strength of diamond films is related to the intermediate layer between the film and the substrate. Poor adhesion of diamond films to polished cemented carbide substrate is owing to the formation of graphite phase in the interface. The adhesion of diamond films deposited on acid etched cemented carbide substrate is improved, and the peeling-off of the films often happens in the loosen layer of WC particles where the cobalt element is nearly removed. The diamond films' adhesion to cemented carbide substrate whose surface layer is decarbonizated is strengthened dramatically because WC phase forms by reaction between the deposited carbon and tungsten in the surface layer of substrates during the deposition of diamond, which results in chemical combination in the film-substrate interface. The adhesion of diamond films to silicon nitride substrate is the firmest due to the formation of chemical combination of the SiC intermediate layer in the interfaces. In the piston-turning application, the diamond-coated Si3N4 ceramic and the cemented carbide cutting tools usually fail in the form of collapsing of edge and cracking or flaking respectively. They have no built-up edge(BUE) as long as coating is *** it wears through, BUE develops and the cutting force on it increases 1 - 3 times than that prior to failure. This can predict the failure of diamond-coated cutting tools.

关键词： diamond film cutting tool adhesion failure prediction cemented carbide

Concentrated Fluoride-medium Route to Synthesis of One-dimensional Fluoroaluminophosphate Chain (C_4H_(15)N_3)[AlPO_4F_2]

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Chemical Research in Chinese Universities 2010年第5期26卷 699-701页

作者： liU Yang HAN yi-de li yi SONG Xiao-wei li Ji-yang YU Ji-hong XU Ru-ren State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

A new one-dimensional（ID） fluoroaluminophosphate chain（C4H15N3）[AlPO4F2]（denoted AIPO-CJ28） was synthesized in the concentrated fluoride synthetic medium with a gel composition of 1.0Al（OPr^1）a：1.0H3PO4： 5.4deTA：1.3HF：2.0H2O（deTA=diethylenetriamine）. The reagents were mixed directly without introducing additional water solvent. The 1D chain is constructed by alternating AlO2F2 arid doubly bridging PO4 tetrahedra to form the simplest serrate chain. AIPO-CJ28 can be transformed to another 1D aluminophosphate chain A1PO-CSC upon further crystallization at 230 ℃.

关键词： Fluoroaluminophosphate Concentrated fluoride-medium Phase transformation Chain structure

Numerical Modeling of Thermal Conductivity of Diamond Particle Reinforced Aluminum Composite

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Numerical Modeling of Thermal Conductivity of Diamond Partic...

第八届中国功能材料及其应用学术会议

作者： YANG Wu-lin PENG Kun ZHU Jia-jun li de-yi ZHOU ling-ping College of Materials Science and Engineering Hunan University Hunan Province Key Laboratory for Spray deposition Technology and Application Hunan University

ISBN: (纸本)9783037859698

In the present work,the finite element method is employed to predict the effective thermal conductivity of diamond particle reinforced aluminum *** common finite element commercial software ANSYS is used to for this numerical analysis.A body-centered cubic particle arrangement model are constructed to simulate the microstructure of the composite with 60 vol.%*** effect of particle size and inhomogeneous interfacial conductance on the thermal conductivity of diamond particles reinforced aluminum composite is ***-octahedral particles are assumed and interfacial thermal conductance between different diamond faces and aluminum matrix is implemented by real constants of contact *** results show that the numerical results using present model agree reasonably well with the *** into consideration the interfacial thermal conductance,the influence of particle size on total thermal conductivity of composite is obvious,the larger size particles tend to meet requirement of the high thermal conductivity of *** the experimental result with the inhomogeneous interfacial thermal conductance model,the evolution of the composite thermal property is profound studied.

关键词： Finite element method Composite materials Thermal properties Interfaces

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基于云的概念划分及其在关联采掘上的应用

软件学报 2001年第2期12卷 196-203页

作者：杜鹢李德毅中国电子系统工程公司网管中心北京100840 中国电子系统工程公司研究所北京100036

将数量型属性转换为布尔型属性是数量型属性关联规则采掘的主要方法 ,但如何使区间的划分合理一直是研究的热点 .传统的划分方法由于不能反映数据间的实际分布规律或者是划分的边界过硬 ,使得最终都不能得到令人容易理解的关联知识 .提... 详细信息

将数量型属性转换为布尔型属性是数量型属性关联规则采掘的主要方法 ,但如何使区间的划分合理一直是研究的热点 .传统的划分方法由于不能反映数据间的实际分布规律或者是划分的边界过硬 ,使得最终都不能得到令人容易理解的关联知识 .提出了一种基于云模型的新划分方法——云变换 ,可以有效地根据数据的实际分布将数量型属性的定义域划分为多个基于云的定性概念 ,这种划分摒弃了以前的硬划分 ,使得到的结果除了保留传统硬划分所具有的优点以外 ,也更加符合实际的数据分布和人的思维方式 ,从而最终得到概括的、易理解的、有效的关联规则 .

关键词：关联规则云模型云变换数据采掘数据库概念划分

NUMERICAL SOLUTION OF 2D FLOW USING A LOCAL COORDINATE SYSTEM

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Journal of Hydrodynamics 1999年第3期11卷 98-104页

作者： Wei Wen li, Wang de yi, liu Yu ling, Tan li xin Xi′an University of Technology, Xi′an 710048, P.R.China (Receied Nov.30,1998)

This paper is concerned with a new numerical method of two dimensional flow. The governing system of differential equations is transformed into an equivalent system applied over a square grid network in order to overcome the difficulties and inaccurancies associated with the determination of characteristics near the flow boundaries. The MacCormack two step explicit scheme with second order accurancy is used for the solution of the transformed system of equations. Comparison between computed and experimental data shows a satisfactory agreement.

关键词： unsteady 2D flow MacCormack scheme local coordinate system isoparametric element

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一种测试数据挖掘算法的数据源生成方法

计算机研究与发展 2000年第7期37卷 776-782页

作者：杜鷁李德毅中国人民解放军理工大学南京210016 中国电子系统工程研究所北京100036

随着数字时代的来临 ,数据挖掘成为知识领域中的研究热点 .但由于保密、数据多样性等问题 ,测试数据源的获取一直困扰着数据挖掘算法的研究 .为此 ,提出一种基于云模型的测试数据源生成方法 ,利用此方法 ,给出了数量型数据的生成算法 ,... 详细信息

随着数字时代的来临 ,数据挖掘成为知识领域中的研究热点 .但由于保密、数据多样性等问题 ,测试数据源的获取一直困扰着数据挖掘算法的研究 .为此 ,提出一种基于云模型的测试数据源生成方法 ,利用此方法 ,给出了数量型数据的生成算法 ,对范畴型数据的生成进行了讨论 .由于云模型中随机性与模糊性的特点 ,各属性的数据之间除了包含已知的先验知识以外 ,数据的分布、各属性之间的关系也会存在一定的随机和模糊 ,使得构造的数据源中又隐含了许多潜在知识 .利用此方法 ,研究人员可根据自己的实际情况进行不同类型、不同量级数据源的构造。

关键词：数据挖掘云模型数据源生式数据库算法测试

Classification evolution algorithm based on cloud model

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通讯和计算机（中英文版） 2009年第10期6卷 8-16页

作者： li He-song ZHANG Guang-wei li de-yi li Xiang-mei State Key Lab of Software development Environment Beihang University Beijing 100083 Branch bureau 27th Mailbox 15th 2# Lanzhou 732750 China

Coaggregation and Coaggregation Inhibition Between Perio-pathogenic and Cariogenic Bacteria

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上海第二医科大学学报 2005年第9期25卷 950-950页

作者： FU Rao li de-yi Institute of Stomatology The Ninth People＇s Hospital Shanghai Second Medical University Shanghai 200011

Mg原子修饰的封闭型六硼烷B_6H_6^(2-)储氢性质的研究

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物理学报 2013年第21期62卷 120-125页

作者：卢其亮黄守国李宜德安徽大学物理与材料科学学院合肥230601

利用密度泛函理论的方法研究了Mg原子修饰的封闭型六硼烷B6H26吸附氢的性能.Mg可以稳定地结合在B6H2-6上,它可以吸附六个氢分子.电荷转移所导致的Mg周围电场的增强和体系更大的偶极矩使得MgB6H2-6比MgB6H6具有更好的储氢性能,储氢密度达... 详细信息

利用密度泛函理论的方法研究了Mg原子修饰的封闭型六硼烷B6H26吸附氢的性能.Mg可以稳定地结合在B6H2-6上,它可以吸附六个氢分子.电荷转移所导致的Mg周围电场的增强和体系更大的偶极矩使得MgB6H2-6比MgB6H6具有更好的储氢性能,储氢密度达到11.1 wt%,氢分子的平均结合能在0.23 eV/H2至0.34 eV/H2之间.结果表明可以通过控制金属-有机物体系的电荷态来增强电场,进而改善其储氢性能.

关键词： MgB6H62-团簇密度泛函理论(DFT) 储氢性能电荷态