Materials Literature
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采用水热法合成了不同配比的金属有机框架化合物（metal—organic frameworks，MOFs）MIL-101和氧化石墨烯的多孔复合材料，并测试了其对氢气和二氧化碳的吸附性质。对多子L复合材料进行了X射线粉末衍射、红外光谱、热重分析和氮气吸附等一系列表征分析。复合材料与MIL-101具有相似的晶体结构和物理性质，但H2和CO2的吸附性能分别提高了3.7％和12．5％：在77K和0．1MPa条件下，H2的吸附量从MIL-101的1．87％（质量分数）提高到MG-2的1．94％；在273K和0．1MPa条件下，CO2的吸附量从MIL-101的5．43mmol／g提高到MG-2的6．11mmol／g。分析认为，由于多子L的MO…
Electrochemical method has been used to insert K/Na into Fe Se lattice to prepare alkali-intercalated iron selenides at room temperature. Magnetization measurement reveals that K x Fe2Se2 and Na x Fe2Se2 are superconductive at 31 K and 46 K, respectively. This is the first successful report of obtaining metal-intercal…
Topological insulators and superconductors, which are featured by not only the topological characteristics of their gapped bulk band structure but also the special edge or surface states, have attracted great attention in the past few years. A complete classification of topological insulators and superconductors in te…
对目前在薄膜太阳电池组件及平板集热器中常用的3.2mm（超白）浮法玻璃弯曲强度进行了试验研究。采用正态分布、对数正态分布、两参数Weibull分布、三参数Weibull分布、Gumbel分布对试验数据的概率分布进行了比较。比较结果表明，采用三参数Weibull分布要优于其他几种分布形式。
We have studied electronic structure and optical properties of Silicon nanocrystals by using density functional theory. The Silicon nanocrystals of diameters 1.0 nanometer up to 4.6 nanometer using the pseudopotential density functional theory were analysed. We have used real space three dimensional grid to approximat…
以氯化聚乙烯/三元乙丙橡胶（CPE/EPDM）作为电缆料的原料,以过氧化二异丙苯（DCP）/三烯丙基氰尿酸酯（TAIC）为硫化剂,白炭黑为补强剂,Al（OH）3和 Mg（OH）2作为阻燃剂,并配以适量的增塑剂、稳定剂和防老剂,制备阻燃绝缘电缆料。经测试,电缆料的体积电阻率可达到8.843×1014Ω＆#183;cm,击穿强度为36.5 kV/mm,断裂伸长率为230%,拉伸强度为3.88 MPa。各项指标达到要求,性能满足电缆料需要。
Import 22/07/2015
EnglishCarbon nanotubes have been recognized as of great interest in nanotechnology, in particular, when used as additives in polymer nanocomposites due to their excellent properties. Since their discovery, CNTs have been studied for the synthesis parameters and even interesting results have been obtained, these works…
The aim of this study is to analyze the changes in the structure, thermal properties and electrophysical behavior of polyethylene glycol doped with multiwalled carbon nanotubes. The differential scanning calorimetry and electrical conductivity methods were used to study influence of doping multiwalled carbon NTs on th…
利用Cu2＋对天然高分子胶粘剂骨胶进行配位改性,制得改性骨胶。分析了Cu2＋与骨胶的配位机制,并采用红外光谱（FT-IR）法、X射线衍射（XRD）法、热失重分析（TGA）法、扫描电镜（SEM）和元素分析法等对改性前后骨胶的结构和性能进行了表征。研究结果表明：骨胶分子中的—NH、—CO与Cu2＋发生了配位反应,并形成了网状结构,而改性骨胶的胶膜表面变得更平滑、耐水性更好。
Iran. J. Polym. Sci. Technol. (Persian), Vol. 28, No. 4, 333-344 October-November 2015 ISSN: 1016-3255 Online ISSN: 2008-0883
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This thesis focuses on the design, synthesis and development of dynamic multivalent nanostructures such as supramolecular dendrimers, liposomes and gold-functionalized nanostructures. These structures can be used for drug delivery and molecular sensing applications. This thesis is divided into three parts:In part one,…
This thesis involves preparation of blend, gel and solid polymer electrolyte using inorganic salts dopants like lithium perchlorate (LiClO4), lithium tetraborate (Li2B4O7) and acid dopants like H2SO4, H3PO4 and HCl along with plasticizers. The use of these polymer electrolytes are tested in supercapacitor. Electrode m…
Os revestimentos mucosos (nasal, retal, ocular, vaginal e a cavidade bucal) sao considerados sitios potenciais para a administracao de drogas, com varias vantagens em relacao a administracao oral; porem, sistemas adesivos eficientes para administracao de farmaco, in situ, tem se apresentado como um grande desafio, dev…
以氢氧化钾-四硼酸钠为熔剂,高温熔融样品,在盐酸-过氧化氢体系中进行酸化,建立了电感耦合等离子体发射光谱法（ICP-OES）同时测定锡矿石中锡钨钼的分析方法。方法线性范围为0.00-40.00 mg/L,检出限为锡12 mg/kg,钨25 mg/kg,钼2.9 mg/kg;方法精密度（n=11）小于5.0%,测定结果与标准物质所提供的参考值一致。采用氢氧化钾-四硼酸钠熔锡矿石,熔样彻底,与传统的过氧化钠熔样法相比,不但克服了熔剂在熔样过程容易飞溅的缺点,而且使用更安全,保存更便利。方法准确、可靠、简便、快速,适用于锡矿石中钨钼锡的测定。
用自制抗菌母料S1–AMB [含nano-ZnO和叶绿素酮酸（CCA）]和S2–AMB （只含nano-ZnO）分别与聚乳酸（PLA）,柠檬酸三丁酯（TBC）热机械共混制得PLA/S1–AMB/TBC和PLA/S2–AMB/TBC纳米复合抗菌材料.对比研究了不同nano-ZnO含量的两类复合材料对大肠杆菌抗菌性能和力学性能的影响.结果表明,CCA的加入使PLA/S1–AMB/TBC复合材料的抗菌性能和断裂伸长率大幅度提高;当nano-ZnO/CCA质量比为18/6,nano-ZnO质量分数为1.2%时,复合材料的抗菌率达到99.5%,为强抗菌材料;和PLA/S2–AMB/TBC相比,其断裂伸长率提高17.8倍,是纯PLA的16.4…
将前驱体Ni0.13Co0.13Mn0.54（OH）1.6与Li2CO3混合,烧结合成了富锂锰基正极材料Li[LixNi0.13Co0.13Mn0.54]O2（x=0.09,0.12,0.16,0.22,0.24,0.29,0.33,0.37）,采用XRD、SEM对其进行表征,并进行充放电测试。研究结果表明：最佳配锂量为x=0.22,此时Li1.22Ni0.133Co0.131Mn0.54O2正极材料以12.5 m A/g的充放电电流密度,在2~4.8 V之间进行电性能测试,初始放电比容量高达253.7 m Ah/g,首次效率为68.4%。
In this work we apply the quasiclassical formalism, an established tool in the context of superconducting heterostructures, to topological insulators and superconductors in one and two dimensions, with focus on the former. \nWe derive topological invariants in terms of the quasiclassical Green's function in the region…
采用溶胶-凝胶法制备了AlPO4：xEu^3＋红色荧光粉,并对其结构和发光性能进行了分析。研究表明：在1300℃下恒温烧结4h可得到该样品,Eu^3＋的加入对其结构没有明显的影响,且无杂相生成。通过测试AlPO4：xEu^3＋红色荧光粉的发光性能,激发峰位于200-550 nm,在394 nm处有一个很强吸收峰,该荧光粉有多个发射峰,发射主峰位于596nm处,呈现红色。同时研究了Eu^3＋离子浓度对发光强度的影响,当掺杂浓度为7%时发光强度达到最高,结果表明该荧光粉是一种较好的红色发光材料。