Materials Literature
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Metal oxides(MO) can remarkably affect the char formation of intumescent flame retardants(IFR) during thermal decomposition, thereby improving the fire resistance property of IFR coatings. In present work, Fe2O3, ZnO and TiO2 were separately incorporated with caged bicyclic phosphates based IFR in epoxy coating, and t…
光存储设备例如紧缩的磁盘(CD ) 和数字万用的圆盘(DVD ) ，提供我们为便宜、紧缩的信息存储媒介的一个平台。现在，我们获得每天的信息不停地增加，并且因此怎么增加存储能力成为重要的期。在这份报纸，我们用金属性的 nano 结构为光存储设备的能力的增加报导了一个方法。在他们的反射或发射度系列的强壮的变化由于局部性的表面电浆子电磁声子回声与戏剧的光阶段调整伴随了的金属性的 nano 结构展览。二件样品分别地通过振幅调整和阶段调整为存储能力改进的示范被制作。这个工作为高密度的光存储是有希望的。
The corrosion behavior and the relevant mechanism of carbon steels Q235 and Q450 exposed for 1 a in the hot and dry atmosphere environment at Turpan area was studied by weight lose test,scanning electron microscopy(SEM),energy dispersive spectra(EDS),X-ray diffraction(XRD) and stereological microscope.The results show…
Nowadays,more and more researchers pay attention to the microwave absorbing materials with the increase of electromagnetic pollution and the development of stealth technology for military platforms.Traditional microwave absorbers,such as ferrite,metal powder,conductive magnetic fibers,magnetic flake powder,and nanopar…
The effect of several kinds of antioxidants on the stability of poly(vinyl butyral) (PVB) under air atmosphere is studied by thermogravimetry-differential scanning calo- rimetry method and kinetic analysis. After mixed with antioxidants, the thermal oxidative stability of PVB increa- ses significantly, because the ant…
Two kinds of C-Si-Mn-Cr series tested steels were designed to obtain dual phase microstructures of ferrite(F)+martensite(M)or ferrite(F)+bainite(B)with different mechanical properties.Effects of strengthening phase on yielding and fracture behaviours during uniaxial tension of dual phase steel were discussed.Compared…
The Schiff base organotin(IV) complex {[4-Et2NC6H3(O)C=NC6H3(O)-5-NO2](nBu2Sn)}2 has been synthesized via the reaction between 4-(diethylamino) salicylaldehyde-2-amino-4-nitrophenol Schiff base(H2L) and dibutyltin oxide. Complex C1 has been characterized by IR, 1H NMR, 13 C NMR spectra, and elemental analysis, and its…
在这研究，有各种各样的内容的 nanohydroxyapatite/polyurethane (nHA/PU ) composites (乙烯乙二醇) methoxypoly 修改了 nHA (0 wt% ， 10 wt% ， 20 wt% 和 30 wt%) 被答案相配准备过程。合成的膜的物理化学的性质被 Fourier 变换调查红外线的光谱学(FTIR ) ， X 光检查衍射(XRD ) ，传播电子显微镜学(TEM ) ，微分扫描热量测定(DSC ) ， Thermo gravimetric 分析(TGA ) 和张力的测试。nanocomposites 的 TEM 相片证明 nHA 一致地在聚合物矩阵被驱散。有 10 wt%…
在一个溶质原子和扩大脱臼之间的相互作用与力量多极用一个连续统近似方法被调查。扩大脱臼的脱臼核心结构与很多无穷小的 Volterra 脱臼与 Peierls-Nabarro 模型 discretized 被建模。在在铜的五分钱溶质原子和完美、扩大的脱臼之间的相互作用精力和力量成功地用力量多极被计算。结果清楚地证明扩大脱臼的核心结构与溶质原子削弱相互作用。为扩大脱臼的相互作用精力和力量是几乎为完美的脱臼的那些的一半。
Surface enhanced Raman spectroscopy( SERS) is an ultrasensitive vibrational spectroscopic technique to detect molecules. At present,adding salts is a main way to induce nanoparticles aggregation to get giant enhancement. However,this method needs more procedures and salts may etch nanoparticles. Here an effective and…
A novel hydrophilic nanocomposite additive(TiO2-g-PNIPAAm) was synthesized by the surface modification of titanium dioxide(TiO2) with N-isopropylacrylamide(NIPAAm) via graft-from technique. And the nanocomposite membrane of poly(vinylidene fluoride)(PVDF)/TiO2-g-PNIPAAm was fabricated by wet phase inversion. The graft…
Central nervous system leukemia( CNS-L) is a fatal complication with low remission,high relapse and high dealth rates in leukemia. Because the existence of blood brain barrier( BBB) hinders drug from going into CNS,therefore it is urgent that to develop a new drug delivery system by which drug can highly and effective…
这份报纸的目的是报导纤维素 nanocrystals (计算机数值控制) 的增加的效果在上机械，热并且障碍性质(乙烯基白酒) poly， /chitosan (PVA/Cs ) bio-nanocomposites 电影通过扔过程的溶剂准备了。PVA/Cs/CNCs 电影的描述以 X 光检查被执行衍射(XRD ) ，传播电子显微镜学(TEM ) ，扫描电子显微镜学(SEM ) ， thermogravimetric 分析(TGA 和 DTG ) ，氧传播率(OTR ) ，和张力的测试。TEM 和 SEM 结果证明在低装载层次，计算机数值控制在 PVA/Cs 矩阵同质地被驱散。在电影的张力的力量和模量分别地从 55.1 MPa 增加…
一系列 Ce， H3PW12O40 共同做 TiO2 空纤维光催化剂被大音阶的第五音胶化方法作为模板作为先锋和棉花纤维用铵 ceric 硝酸盐， H3PW12O40 和 tetrabutyltitanate 准备了，在 500 慦桳潩由锻烧列在后面？
Si 妈 NMR )，并且它的催化表演与为液体 ph 的常规多微孔的贝它沸石的相比结果显示层次贝它沸石与 meso/microporous 结构由 nanosized 晶体组成并且比多微孔的贝它沸石有更强壮的酸力量。tri-secbutylbenzene (TSBB ) 和 sec-butylbenzene (SBB ) 的选择的更高的变换比多微孔的贝它沸石在层次贝它沸石上被完成，当 di-secbutylbenzene (DSBB ) 的变换稍微更高时。在层次贝它沸石上的催化性能的改进能被归功于到 mesopores， nanosized 晶体和更强壮的酸味的存在。
In this paper, a numerical method is established to analyze the response of fluid-filled structure to underwater explosion with cavitation and the validation of the method is illustrated. In the present implementation, the second-order doubly asymptotic approximation(DAA2) other than curved wave approximation(CWA)is u…
有单个或联合的多重差错的转子系统上的广泛的研究被执行了。然而，这些研究被限制到单个跨度的转子系统。为有联合差错的一个复杂忍受转子的系统的一个有限元素模型被介绍。忍受转子的系统的动态回答被与射击继续的算法相关使用转子动力学理论和现代非线性的动力学理论获得(通常使用为一个非线性的系统获得一个周期的答案) 为磨擦影响清理和裂缝深度的一个范围。稳定性和有联合差错的忍受转子的系统的周期的运动的 Hopf 不稳定性被使用描述的过程分析。结果显示有限元素方法是为决定如此的复杂忍受转子的系统的动态回答的一个有效方法。为有磨擦影响和裂缝差错的一个转子系统进一步，清理的影响为不同磨擦影响僵硬是显著地不同的。相反，裂缝深度的影响是相当小的。忍受转子的系…
A modified cellular automaton(CA) program was developed to simulate the process of dynamic recrystallization(DRX) for 23Co13Ni11Cr3Mo ultrahigh strength steel.In this model,influences of deformation parameters on hardening rate and solute drag effect were considered.Moreover,an inverse analysis method was proposed for…
This study advances our effort of establishing a novel torsion Kolsky bar technique using a side impact mechanism to achieve controllable torsional loading. Because of the nature of a side loading mechanism, several new issues arise: bending wave propagation because of unbalanced transverse forces, multiple loadings b…
The effects of pH,temperature and H2S concentration on hydrogen permeation current and corrosion rate of Q235A carbon steel in weakly acidic medium were studied with the potentiostatic anodic polarization and mass loss methods.The relationship between hydrogen permeation current density and corrosion rate was investig…