Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
軟質ポリ塩化ビニル（PVC）として，農業用ビニルシートを用い，可塑剤（フタル酸エステル（FAE））含有および可塑剤除去の二種類のサンプルを調製した．おのおののサンプルを水酸化ナトリウム（NaOH）と，サンプル中の塩素（Cl）に対するNaOH中のナトリウム（Na）が所定のモル比となるように混合して，遊星ミルにより，室温にてメカノケミカル（MC）処理し，PVCとNaOHとのMC脱塩素反応に及ぼすFAEの影響を検討した．FAEが存在すると，MC脱塩素反応は阻害されるが，NaOHの添加量を増加することで，脱塩素率は大きく向上する．MC反応そのものは，FAEの存在に無関係であり，かつ，MC処理しても，FAEが水相側に溶出することはない．
Bi-, tri-, and tetradentate macroheterocylic ligands, i.e., structural analogs of phthalocyanine, are studied by X-ray photoelectron spectroscopy. The X-ray photoelectron spectra of N1 s lines of the nitrogen atoms of these compounds are analyzed. The binding energies and integrated intensities of N1 s lines of the ni…
非相溶三成分系ポリマーブレンドとしてナイロン6 (PA) /スチレン-アクリロニトリル共重合体 (SAN) /ポリプロピレン (PP) 系およびPA/ポリスチレン (PS) /PP系ブレンドを溶融混練により調製した. これらブレンド中に形成される組織構造および分散相粒子サイズに及ぼす成分ポリマー間の界面張力, ブレンド組成, ブレンドのレオロジー的性質および混練条件の影響について調べた. 三成分系ポリマーブレンドが形成するコアシェル型分散相構造や独立型分散相構造は, 拡張係数およびNeumannの三角形からの予示とは異なるが, 溶融混練前後における界面自由エネルギー変化からのそれと一致する. また, これらの分散相粒子サイズは,…
Nanoparticle-based vibration damping shows the effect that molecule-level mechanism can have on the damping and that nanostructured composite materials can provide enhanced strength/vibration damping properties over broader operational conditions. The focus in this paper is directed toward to some aspects of engineeri…
We consider a linear elastic homogeneous composite half-space, which consists of a homogeneous matrix containing a random array of inclusions. The elastic properties of the matrix and the inclusions are the same, but the stress-free strains are different. A method of integral equations is proposed for the estimation o…
The influence of heat treatment temperature after the pressure expansion on the electromechanical properties of cellular polypropylene (PP) electret is studied. The results point out that over the temperature range form RT to the melting temperature of the sample, the thickness of the sample after pressure expansion i…
The main objective of this work was to extend the techniques of shock‐wave testing of brittle materials upon divergent loading conditions in order to vary the relationship between longitudinal and transversal stresses and to obtain experimental information about the conditions of the compressive fracture thresholds. E…
Se sintetizaron hidróxido de circonio puro y modificado con un 15% de iones borato. Ambos se calcinaron en atmósfera dinámica de aire durante 3 h a 400, 500 y 600ºC. Los soportes se caracterizaron mediante fisisorción de nitrógeno, espectroscopía infrarroja, titulación potenciométrica con n-butilamina y deshidratación…
The influence of temperature on the deformation and failure behavior of AZ80 wrought Mg alloy has been examined from 77K to 298K. It is found that the yield strength (YS) and ultimate strength (UTS) are increasing with the temperature decreasing, while the elongation is decreasing especial between 213K and 143K. Based…
The GeO-B2O3-Na2O (GBNB)，GeO2-Al2O3-Na2O(GANB), GeO2-Al2O3-BaO(GABB)and GeO2-Al2O3-Y2O3(GAYB) glasses doped with bismuth of 1mol% concentration were prepared by melting method and measurement of their DTA curves, absorption and emission spectra and fluorescence decay curves were carried out. It was found that the abso…
Influence of low molecular weight polybutadiene (liquid PB) treated with maleic anhydride on properties of a silica-filled SBR compounds was studied. Silica dispersion was improved by adding liquid PB. The liquid PB treated with maleic anhydride (liquid MAPB) was found to be more effective for the improvement of silic…
Nanoparticles of tin-doped ferrites SnxFe3-xO4(x=0, 0.1, 0.2, 0.3, 0.4, 1.0) were prepared by the precipitation exchange method. The particles of all specimens are crystalline with mean diameter in the range of 4-8 nm, and the lattice parameters enlarge with increasing tin content. Magnetization and Mssbauer data ind…
Minerals of the tobermorite group with double [Al3++Na+] substitutions were synthesized using both, non-ground raw mineral mixtures and mixtures ground in a colloidal mill. The synthesis of calcium sili-cate hydrate is more effective when dry primary mixtures ground in a colloidal mill are taken, because compositions…
From crystallographic point of view, Al<sub>4</sub>Si C<sub>4</sub> can be described as Al<sub>4</sub> C<sub>3</sub> -type and hexagonal SiC-type structural units alternatively stacked along [0001] direction. However, relationship between this layered crystal structure a…
The effects of the thicknesses of a Cu/Ti underlayer and a Sm-Co layer on the magnetic properties and domain structure of SmCo5 perpendicular magnetization films prepared by using an ultra-high-vacuum sputtering system were investigated. By adjusting the thicknesses of both the Cu/Ti underlayer and the Sm-Co layer, th…
Increasing the working frequency can reduce the size of the magnetic component, however, the high frequency eddy effects including skin and proximity effects raise the winding losses. Based on one-dimensional model for windings of magnetic components, the eddy effects in planar magnetic components are analyzed. By uti…
Nanoparticles as lubricating additive possess excellent tribological properties. Many researchers have used nanodiamond as a new type lubricating additive due to its double performances of both diamond and nano-material.The key problem is the surface modification of nanodiamond aggregates to achieve the deaggregation…
Borazine derivatives were reacted with divinyldisilazane via hydroboration reactions. The synthe- sized liquid polymer with a ca. 70 % ceramic yield changed to an insoluble solid after crosslinking reactions of the unreacted vinyl groups to the B-C alkyl bridges between the borazine ring and vinylsilazane as post-heat…
Transformer failure is usually triggered by external events such as lightning strikes, switching transients, or short circuits. However, susceptibility to these events is usually due to some incipient weakness in the insulation system, which may be detected at an earlier stage by monitoring partial discharge activitie…
This paper described the production of a novel biosynthetic material using the manufacturing technique of electro spinning for the construction of scaffold for organ replacement. This electrostatic technique uses an electric field to control the deposition of polymer fibres onto a specific substrate to fabricate fibro…