碳基納 的英文怎麼說
中文拼音 [tànjīnà]
碳基納
英文
kynar-
Calculations of the density of alloys based on bernal - type models of the alloys metal component agreed fairly well with the experimentally determined values from measurements on alloys consisting of a noble metal together with a metalloid, such as alloys of palladium and silicon, or alloys consisting of iron, phosphorus, and carbon, although small discrepancies remained
對于合金密度的計算,以伯納爾建立的金屬模型為基礎的計算,很大程度上等同於實驗中測量的結果,測量是針對于貴重金屬和非金屬的合金,比如說,鈀和硅的合金,或者由鐵、磷、和碳組成的合金,盡管還存在一些小的差異。It is also known that sodium ethylate and diethyl phenylmalonate interact together to give ethyl phenylacetate and diethyl carbonate
眾所周知,乙醇納和二乙基苯基丙二酸酯反應可以得到乙基乙酸苯酯和二乙基碳酸酯。This method, however, involves using a large excess of diethyl carbonate ( for example, 4 - 8 mols. ) ; it also involves preparing sodium ethylate by dissolving sodium metal in ethanol, which process must be carried out very slowly and carefully if it is to be used on a manufacturing scale
但是這一方法涉及到使用大量過量的二乙基碳酸酯(例如, 4 - 8摩爾) ;同時也涉及到在乙醇中溶解納來制備乙醇納的反應,這個過程必須非常緩慢小心地進行,如果在工業生產級別上是用這一方法就比較麻煩了。Interaction between multi - walled carbon nanotube hydrosol and methyl green
甲基綠與水溶性多壁碳納米管的相互作用Proceed from the present situation of nanometer tio2 powder industry in our country, confront more problems in preparation of nanometer tio2. on the base of analyzing advantages and disadvantages of existing every methods, neutralization precipitation method is adopted, using self - prepare tioso4 solution as raw material, soda as precipitant to precipitate titanous hydroxide precipitation, then obtained anatase nanometer titanium dioxide after heat treatment
從我國發展納米tio _ 2粉體產業的現狀出發,針對納米tio _ 2制備中現存的問題,我們在綜合分析對比了現有各種方法優缺點的基礎上,採用中和沉澱法,以自制的tioso _ 4為原料,碳酸鈉作沉澱劑沉澱出ti ( oh ) _ 4沉澱,經熱處理得到銳鈦型納米tio _ 2粉體。The content of this paper contains : chapter one introduces the basic concepts, developing course, research significance, application foreground and the present research state of other countries in the world. chapter two introduces the structure characteristic and the performances and applications in the areas such as mechanics, physics and chemistry, then analyzes the present state, existing problem and developing trend of nanotubes research. chapter three introduced several synthesis methods and purification methods of nanotubes and nanofibers detailedly. chapter four concentrates on the research of two foreign research groups who use carbon - hydrogen gases flames to produce carbon nanotubes
論文的主要結構如下:第一章介紹了納米材料科學的基本概念、發展歷程、研究意義、應用前景及世界各國的研究現狀。第二章闡述了碳納米管的結構特徵以及力學、物理和化學等各方面性能和應用,並且分析了碳納米管這種新型碳材料研究目前現狀、存在問題及發展趨勢。第三章詳細介紹了碳納米管和碳納米纖維的幾種傳統制備方法及純化方法。As predicted theoretically, the ps polymer spreaded over the surface of the titania particles to form composite particles with core - shell structure. the influence of ph value and non - ion surfactant in heterocoagulation was discussed. the property of the coated particles was characterized by sem, and zeta potential, particle size distribution of the particles before and after encapsulation was obtained by laser particle size analyzer
根據機械力化學的原理,採用自行制備的微米級ps和pmma (聚甲基丙稀酸甲酯)高聚物微球、金屬粒子、納米級的tio _ 2 、爐料為原料粒子,通過採用自行研製的乾式沖擊設備和lg攪拌磨製得以高聚物微球、金屬粒子為核,納米tio _ 2 、碳黑粒子等為包覆粒子的具有不同特殊功能的納米微米復合粒子。A carbon nanotube - based normal on under - gate field emission display panel
一種基於納米碳管的常開型后柵極場致發射顯示板Using v2 & 5 and alkylamines ( cs - cao alkyl chain ) as precursor, vanadium oxide nanotubes which have an unique structure that alkylamines intercalate into layers of tubes wall affecting the layer spacing were prepared. their layers spacing ranges from 1. 25 nm to 3. 82 nm according to the length of alkyl chain. moreover, the growth mechanism of vanadium oxide nanotubes have been investigated and 3 - 2 - id model was established to interpret the vanadium oxide nanotubes growth process. potassium niobate is a functional materials which can be used as photochemical catalysts. lt is well known that the catalytic activites are affected greatly by the surface area of catalyst particles on which the reaction take place
以系列烷基胺和五氧化二釩為原材料,通過簡單的水熱反應合成出了氧化釩納米管,這種納米管結構獨特,烷基胺作為模板劑內嵌入納米管管壁層間,成為支持納米管的骨架,並影響層間距大小,納米管管壁層間距隨著烷基胺碳鏈長度的不同在很大范圍內變化,通過採用不同碳鏈長度的烷基胺( c _ nh _ ( 2n + 1 ) nh _ 23 n 20 )作為模板,來控制氧化釩納米管的層間距,層間距可調控范圍從1 . 25nm到3 . 82nm 。In chapter 3, after introducing the curvature - modified electronic structures of single - wall carbon nanotubes, we study the density of electronic states. the relations between the electronic structures and tube - diameters and chiralities are discussed
第三章介紹了考慮捲曲效應后的單壁碳納米管的電子能級結構,並在此基礎上研究了單壁碳納米管的電子態密度,以及管徑和螺旋度對其電子結構的影響。The study showed that the effect of surface tension induced by the nanosize curvature of critical nuclei could drive metastable phase region of diamond nucleation in carbon diagram into stable phase region, consequently, for both of homogenous and heterogeneous nucleation processes, diamond nucleation would be prior to graphite nucleation in competing growth of diamond and graphite upon chemical vapor deposition ( cvd )
研究表明,建立在碳的平衡相圖基礎上,在納米尺寸的金剛石臨界核的曲率誘導下的表面張力效應將金剛石成核的亞穩相區推進到穩定相區,因此無論對于金剛石的均勻氣相成核還是異質成核,在金剛石和石墨的競爭生長中,金剛石成核均優先於石墨成核。According to the different modifier, it is classified as follows : inorganic nanoparticle / nylon 6 in - situ composite, organic polymer / nylon 6 in - situ composite and carbon nanotube / nylon 6 in - situ composite
基於改性劑的不同,將其分為無機納米粒子尼龍6原位復合材料、有機高分子聚合物尼龍6原位復合材料和碳納米管尼龍6原位復合材料。By increasing the h2 dilution ratio, it is found that atomic hydrogen can selectively etch amorphous phase and stabilize crystalline phase. from the study on the distance from substrate to catalyzer, choosing a proper distance can ensure the gas fully decomposed, while a relatively low substrate temperature can cause the nanocrystalline particles to lose mobility and keep their sizes. the pre - carbonization process can enhance the nucleation density and make the growth of high quality nanocrystalline p - sic films much easier
實驗結果表明:隨著工作氣壓的減小,薄膜的晶粒尺寸有所減小;通過提高氫氣稀釋度,利用原子氫在成膜過程中起的刻蝕作用,可以穩定結晶相併去除雜相;選擇適當的熱絲距離能保證反應氣體充分分解,又使襯底具有較高的過冷度,是形成納米薄膜的重要條件;採用分步碳化法可以提高形核密度,有利於獲得高質量的納米- sic薄膜;襯底施加負偏壓可以明顯提高襯底表面的基團的活性,因負偏壓產生的離子轟擊還能造成高的表面缺陷密度,形成更多的形核位置。Deposition of carbon nanofibers on a low carbon steel substrate using an oxy - acetylene reducing flame
低碳鋼基體表面氧乙炔碳化焰法沉積納米炭纖維Single - walled carbon nanotubes ( swnts ) were opened and oxidized in the concentrated h2so4 / hno3 mixture ( volume ratio : 3 : 1 ), hydroxyl groups could be brought into the swnts after oxidation modification treatment, and the long - chain silane coupling agent was grafted onto swnts via hydroxyl - silanol route
摘要採用混酸體系(濃硫酸濃硝酸體積比為3 / 1 )對單壁碳納米管進行了氧化處理,並通過氧化處理后在單壁碳納米管表面生成的羥基官能團與長鏈硅烷偶聯劑進行反應,制備了表面有機修飾的單壁碳納米管。Ammonia played a critical role in the vertical alignment of cnts, and the possible reason was that in 850 the atomic hydrogen decomposed from ammonia reacted with amorphous carbon to form volatile products to keep the metal surface clean, and mechanical leaning against neighboring tu bes established a morphology of vertical alignment
當基體為單晶硅、催化劑鎳膜厚度為20nm 、氨氣氣氛、生長溫度為850時,得到了定向生長的納米碳管。其原因可能是850時氨氣分解的氫原子和無定形炭生成了易揮發物質,從而保持催化劑的活性使納米碳管依靠相鄰碳管之間的斥力定向生長。We successfully make the nanosized diamond particles calculated on the cathode and get the composed materials by electrophoretic method. comparing to the pecvd method by which people make the cnt and nanocrystal diamond grow currently on the same substrate, it ’ s more simple, economic and easy to control. the main jobs are followed : 1
實驗中採用電泳的辦法,將金剛石超微粉沉積到陰極基片上,從而制備出合成材料,此種辦法與通過pecvd方法實現基片上碳納米管與金剛石超微粉的合成材料的生長相比,更加經濟,簡單與實用,並且更加容易控制。The nanometer particles of o - azo with diameters in the range of 40 - 60 nm and carbon nanotubes ( cnts ) immobilized by nanoscale o - azo are successfully obtained by modified liquid phase direct precipitation ( lpdp )
通過改進的液相直接沉澱法成功制備了粒徑在40 60nm的?唑基偶氮微粒,並將?唑基偶氮納米材料與碳納米管復合,制備了偶氮碳納米管納米復合材料體系。Among the carbon hydrogen storage material, activated carbon, carbon fiber, and carbon nanotuber are introduced ; in the organic hydrogen storage material, organic liquid and metal organic are introduced
其中碳基儲氫材料主要介紹了活性炭、碳纖維、碳納米管及碳化物的衍生物;而有機物儲氫材料主要介紹了有機液體和金屬有機物。The main results of this study are summarized as folio wings : firstly, the effect of rare earth - doped catalyst to the synthesis of carbon nanotubes was systemic studied ; the vary of morphology and content of catalyst in the catalysis synthesis process of carbon nanotubes was also deeply investigated, which is helpful to the understanding of carbon nanotube growth mechanism
本文利用cvd和熔劑法及直接氧化法在合成和表徵碳納米管、硼基納米材料及其他若干材料等方面做了以下初步的探討: ( 1 )系統研究了稀土摻雜催化劑對碳納米管生長的影響及催化合成碳納米管過程中催化劑形貌和成份的變化,加深對碳納米管生長機制的理解。分享友人