用片状铝基合金颜料制备阳极型超屏蔽涂料

通过研究铝基合金颜料的形状和成分对牺牲型涂料的涂刷性能、涂层附着力、电极电位和防腐蚀性能的影响,制备出颜料体积分数较小、屏蔽隔离作用和阴极保护作用均优异、不再需要罩隔离型面漆的牺牲型涂料,即阳极型超屏蔽涂料。实验结果表明,在具有相同有效保护寿命的前提下,片状铝锌系合金颜料较球状铝锌系合金颜料配制的涂料具有更低的颜料体积分数和更优异的涂层屏蔽隔离性能。此外,通过提高铝基合金颜料中的锌锡含量,达到了降低颜料表面电阻、提高其在涂层中电化学活性的效果。     

LA型陶瓷涂料的研制

讨论了ＬＡ型陶瓷涂料的制备，表明ＬＡ型陶瓷涂料性能好，成本低，值得推广。     

金属颜料对保温涂料发射性和反射性的影响

论文基于高原、严寒及寒冷地区对外墙涂料光学性能的要求,研究涂料组分中各类金属颜料对其红外发射率及太阳能反射比的影响。研究结果表明：金属颜料能显著降低油性涂料的红外发射率;颜料种类、掺量及形貌对涂料的发射率有较大影响;铜粉对油性涂料发射率的降低效果最好;发射率随颜料掺量的增加而降低,在40%~50%范围内达到最低;同掺量下片状铜粉在油性涂层中的效果优于球状的;漂浮型铝颜料对油性涂料发射率的降低效果优于非漂浮型铝颜料。水溶性金属铝粉能显著降低水性涂料的红外发射率,红外发射率和太阳能反射比均随铝粉的粒径增大而下降。上述各类涂料涂层的红外发射率均可达到0.35~0.45、太阳能反射比0.39~0.56,基本符合采暖地区外墙涂料光学性能的要求。     

水玻璃苯丙乳液复合内墙涂料的研制

介绍了水玻璃苯丙乳液复合内墙涂料的制备工艺及产品性能。以水玻璃为主成膜物质,苯丙乳液为次成膜物质,丙二醇丁醚为助成膜剂,增稠剂为浓度１０％的高分子化合物的水溶液,有助于颜料的悬浮和防止涂料在涂刷时出现流挂现象。采用无机复合生产工艺,在高速搅拌机中,无需加热与颜料、体质颜料和其它助剂搅拌合成,经研磨,即得产品。该产品白色无光可作为中高档内墙涂料使用,可采用刷涂、辊涂、喷涂施工方法,各项性能指标均符合行业标准。     

水性AA—1转化型带锈涂料

选用植物多酚VT为锈层转化螫合剂，自制的苯丙复合乳液为成膜物，研制成水性AA－1转化型带锈涂料。该涂料不含无机酸、芳烃溶剂以及有害的重金属防锈颜料，可直接在有锈或无锈的钢件表面涂装。介绍了苯丙乳液的配方和合成工艺，AA－1涂料的配方和配制方法，以及涂料的施工方法。试验表明，AA－1涂料的性能指标达到或超过国内同类涂料水平。     

高耐候、耐污外墙乳胶涂料的配方设计

在对影响建筑外墙乳胶涂料的耐候性和耐沾污性的3个重要因素颜基比(P/B)、颜料体积浓度(PVC)和基料分析的基础上,进行高耐候、耐污外墙乳胶涂料的配方设计研究.试验结果表明外墙乳胶涂料的遮盖力、耐沾污性随P/B的增大而提高,并且耐候性、耐沾污性在P/B为3.0时有最佳值;在保证PVC相似文献   

低温可逆变色涂料的研究

采用Ｃｏ盐（ＣｏＣｌ２．２Ｃ６Ｈ１２Ｎ４．１０Ｈ２Ｏ）作为变色材料,无机非金属材料（ＳｉＯ２,ＣａＯ,ＭｇＯ,Ａｌ２Ｏ３粉）作为填料,制成低温可逆变色涂料,通过填料选择、变色温度、恢复原颜色时间的试验及涂料性能的检测,确定了最佳涂料配方。     

UV固化彩色涂料贮存稳定性的研究

贮存稳定性是涂料的一项重要性能，它直接影响涂料的使用和涂膜的性能。对于UV固化彩色涂料，贮存稳定性包括颜料粒子的分散稳定性和涂料体系对光的稳定性。通过测定UV固化彩色涂料贮存一定时间后相对沉降率的方法，研究了齐聚物，颜料，研磨时间，气相SiO2，EFKA-4010分散剂对涂料中颜料粒子分散稳定性的影响。通过对试验结果的归纳，得出了上述各种因素对涂料中颜料粒子分散稳定性的影响规律和影响程度，并从理论上给予了说明。     

膨胀型防火涂料的阻燃机理研究

选取聚磷酸铵（ＡＰＰ）－三聚氰胺（ＭＥＬ）－季戊四醇（ＰＥ）作为阻燃体系,采用先进的仪器和分析方法,如热分析（ＴＧ和ＤＴＡ）、扫描电镜（ＳＥＭ）、能谱仪（ＥＤＳ）和Ｘ射线衍射（ＷＡＲＤ）等,对氯化橡胶膨胀型防火涂料的阻燃机理进行了系统而深入的研究．     

外墙反射隔热涂料的研制

介绍了反射型外墙保温隔热涂料的发展现状及其保温隔热机理,并研究了涂料中各种成分的选择原则。通过自制的反射隔热模拟箱,对涂料配方中的基料、颜料、功能性填料和无机填料进行筛选,研制出反射隔热涂料。考察了成膜基料、功能性颜料和填料的种类、含量对涂层隔热性能的影响。并筛选了合适的助剂。研究发现,当玻璃微珠的含量为13％时,隔热效果最佳。此外,当玻璃微珠与其他填料配合使用,能够有效地提高涂膜的反射隔热效果。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with