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制备碳
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  production of carbon
     Production of Carbon Nanotubes from Methane Decomposition Over a Al_2O_3 Supported Cobalt Aerogel Catalyst
     Al_2O_3气凝胶负载钴催化剂催化甲烷裂解制备碳纳米管
短句来源
     Continuous Mass Production of Carbon Nanotube Using Secondary Fluidized Bed
     二级流化床法大规模连续制备碳纳米管
短句来源
     Mass Production of Carbon Nanotubes in Flames
     火焰法大量制备碳纳米管方法研究
短句来源
     The experiment results showed that deoposition rate of fabricating C/C composites was improved 30-50 times,i. e. only 20h need in fabricating C/C composites of carbon felt perform of 20mm thick in density of 1. 7g/cm3. This method has proven especially useful for the production of carbon and ceramic matrix composites.
     试验证明采用这种新工艺制备C/C材料沉积速率提高了30~50倍,该方法特别适合制备碳和陶瓷基复合材料。
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  “制备碳”译为未确定词的双语例句
     A Study on the Preparation of Carbon Nanotubes by CatalyticDecomposition of C_2H_2 over Cu- Ni/La_2O_3
     Cu-Ni/La_2O_3热解C_2H_2制备碳纳米管的研究
短句来源
     Preparation of carbon nanotubes from catalytic decomposition of n-hexane on LaAl_(1/3)Fe_(2/3)O_3 catalyst
     LaAl_(1/3)Fe_(2/3)O_3 催化剂上正己烷裂解制备碳纳米管研究
短句来源
     Preparation of LaAl_(1/3)Fe_(2/3)O_3 Catalyst and Its Application to Carbon Nanotubes Synthesis from Volatile Organic Compounds
     LaAl_(1/3)Fe_(2/3)O_3催化剂的制备及用于VOCs裂解制备碳纳米管
短句来源
     A Study on Catalytic Preparation of Carbon Nanotubes by LaCu_xNi_(1-x)O_y
     制备碳纳米管的LaCu_xNi_(1-x)O_y催化剂研究
短句来源
     Carbon Nanotubes Syntheses on a Fe/La2O3 Nanocatalyst
     Fe/La_2O_3纳米催化剂制备碳纳米管
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  相似匹配句对
     Preparation of Carbon Nanotubes
     纳米管的制备
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     Preparation of Carbon Nanotube
     纳米管的制备
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  production of carbon
Production of Carbon Nanotubes by the Magnetron DC Sputtering Method
      
A novel route is described for the production of carbon-ceramic membranes where the structure can be adjusted for use in either multiphase (gas-liquid) or gas phase membrane reactors.
      
Mathematical modeling of continuous production of carbon nanofibers from methane in a reactor with a moving bed of a nickel-cont
      
The continuous production of carbon nanofibers from methane on a Ni/Al2O3 catalyst (90 wt % Ni) in a plug-flow reactor with countercurrent or cocurrent flows of the phases is considered.
      
Production of carbon nanotubes by catalytic gas-phase pyrolysis of ethanol
      
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In this paper the variations of intensity of characteristic peaks with heating temperature for three acrylonitrile copolymeric fibres have been studied under given temperature (350℃) and atmospheric environment by in-situ infrared spectroscopic method. The results show that the oxidation raction proceeded mainly after cyclization and dehyrogenation reactions concured in the pyrolysis process for the sample of Lanzhou chemical fibre plant, but the dehyrogenation and oxidation reactions occured mainly after cyclization...

In this paper the variations of intensity of characteristic peaks with heating temperature for three acrylonitrile copolymeric fibres have been studied under given temperature (350℃) and atmospheric environment by in-situ infrared spectroscopic method. The results show that the oxidation raction proceeded mainly after cyclization and dehyrogenation reactions concured in the pyrolysis process for the sample of Lanzhou chemical fibre plant, but the dehyrogenation and oxidation reactions occured mainly after cyclization reaction for the British Courtaul's and our samples.It was shown that the maximum lenth of cycloforming sequence for British sample was obtained at 260℃, but the same parameter for our sample at 320℃, and for Lanznou sample at 300℃. wherefore, the results are valuable and it may be expected that high performance PAN fibre can be obtained by improving the operation condition of carbonization.

本文描述用傅里叶变换红外光谱法在位连续测定制备碳纤维用的三种聚丙烯腈原丝在空气中低温(350℃)热解时化学结构的变化。据光谱峰的变化规律和各特征基团吸收强度的实验数据表明,在本实验条件下,兰州丝发生先脱氢后氧化和环化反应,而英国丝和本所样品,其脱氢和氧化反应主要发生在环化反应之后。在比较三种样品成环序列长度时,发现英国原丝在较低温度(260℃)下就可使环序列长度达最大值,而本所自制产品则需要在较高温度(320℃)下才能使环序列长度达最大值,而兰州产品介于中间(300℃)。

The purpose of this work is to develop production of carbon fibre reinforced Pb or Pballoy composite materials by molten metal infiltration.In order to increase the Wettability between carbon fibre and metal matrix,the carbon fibres havebeen plated nickel.Addition of minor amounts(3.5% vol)of carbon fibre the tensile strength of thePb matrix composite materials.was improved significantly.And the fracture surfaces of the tensil(?) sam-ples were also analysised by scanning electron microscope.

碳纤维的强度高、刚度高、密度低、热膨胀系数小(-0.1~0.21×10~2/℃)导电、导热,而且尺寸稳定性好,石墨本身还具有自润滑作用,因此作为金属基复合材料的增强物是很引人注目的。目前所供应的细的多丝纤维束是由1,000~10,000根丝组成的,每根丝的平均直径为7微米。如何使被增强的基体金属充分地包围每根纤维丝,成为这类复合材料制备中的一个问题,本文用液态基体金属渗透法来制备碳纤维增强铅及其合金,並对此种复合材料的制造工艺以及所得到的拉伸性能和断口形貌进行了初步分析。

Annular specimens of carbon-carbon composite made from carbon cloth lay-up/CVD carbon densification were tested against themselves on a friction tester. The friction coefficient and wear as a function of linear velocity, pressure and absorption energy were obtained. When start a braking at sliding speed between ,2 m/s to 10 m/s,a transition region of friction coefficient is observed. In this region, the friction coefficient at lower or higher speeds are smaller than those at medium speeds. During braking the...

Annular specimens of carbon-carbon composite made from carbon cloth lay-up/CVD carbon densification were tested against themselves on a friction tester. The friction coefficient and wear as a function of linear velocity, pressure and absorption energy were obtained. When start a braking at sliding speed between ,2 m/s to 10 m/s,a transition region of friction coefficient is observed. In this region, the friction coefficient at lower or higher speeds are smaller than those at medium speeds. During braking the wear at low braking energy is 1 to 2 order of magnitude larger than that at high braking energy. These results may be attributed to the preperation technology and properties of C-C composites and to the graphite film formation on the friction interface at braking.

用碳-布叠层进行化学气相沉积制备的碳-碳复合材料环状样品,在摩擦试验机上做的自身对摩试验,获得了线速度、压力和吸收能量对摩擦系数及磨损的关系。当刹车开始时样品的线速度在2~10m/s范围内,具有一个摩擦系数的转折区,在低速和高速时的摩擦系数均比中速时小。在低制动能刹车时的磨损比高制动能刹车时的磨损大1~2个数量级,这和碳-碳复合材料的制备工艺、材料特性以及刹车时在摩擦界面上形成石墨薄膜有关。

 
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