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沥青     
相关语句
  bitumen
    Study on the Properties of Damping Bitumen Material (In Chinese)
    沥青型阻尼材料的性能研究
短句来源
    The damping mechanisms of viscoelastomeric materials under the vibration are discribed, and the dynamic mechanical properties of damping bitumen material are studied.
    阐述了粘弹性材料在振动作用下的阻尼机理,研究了沥青阻尼材料的动态力学性能。
短句来源
    The properties and carbonizing yield of several kinds of matrix precursors, such as bitumen, phenolic resin, COPNA resin, furan resin, polyarylacetylene are also mentioned.
    讨论了不同物质 ,其中包括工业沥青、酚醛树脂、呋喃树脂、缩合多核芳香 (COPNA)树脂以及聚芳基乙炔树脂作为碳 /碳复合材料基体前驱体的特点。
短句来源
  pitch
    STUDY ON THE LIQUID-PHASE CARBONIZATION OF SEVERAL AROMATIC HEAVY RESIDUES—X-RAY DIFFRACTOMETRIC STUDY ON THE PARA-CRYSTALLINE STRUCTURE OF PITCH MESOPHASE
    芳香性石油渣油液相炭化过程的研究——X射线衍射法对沥青中间相的结构研究
短句来源
    STUDY ON RHEOLOGIC PROPERTY OF PITCH FOR CARBON FIBER
    碳纤维原料沥青流变性能的研究
短句来源
    On an Improved Type of Modified Pitch Used as Matrix Material of Carbon/Carbon Composite
    交联剂在碳/碳复合材料沥青基体中的作用
短句来源
    Mesophase Pitch for Carbon Matrix of Carbon/Carbon Composites
    碳/碳复合材料基体用中间相沥青
短句来源
    DEVELOPING DIRECTION OF POLYMER PITCH COMPOSITES
    聚合物沥青复合材料开发方向
短句来源
更多       
  tar pitch
    Influence of Surfactants on Impregnation Performance of Coal Tar Pitch
    表面活性剂对煤沥青浸渍性能的影响
短句来源
    Developments of Coal Tar Pitch for Impregnation of Carbon/Carbon Composite Materials
    C/C复合材料用浸渍剂煤沥青研究进展
短句来源
    Pilot-scale Study on Produce to Electromagnetic Shielding with Coal Tar Pitch and Lignin from Paper-making Black Liquor
    用煤沥青和造纸黑液中的木质素制备电磁屏蔽材料的中试研究
短句来源
    The coal tar pitch was separated into two fractions (THF-insoluble, THFI; THF-soluble, THFS) by solvent exaction using tatrahydrofuran (THF).
    将原煤沥青(CTP)使用四氢呋喃萃取分离得到四氢呋喃可溶物(THFS)和四氢呋喃不溶物(THFI)两部分。
短句来源
    Because of the complicacy of the components of coal tar pitch, the simulation of preparation process of pitch-based composites has not been developed widely.
    由于煤沥青成分的复杂性,对煤沥青基复合材料的制备过程的模拟还没有得到广泛开展。
短句来源
更多       
  pitches
    STUDIES ON THE THERMAL PROPERTIES OF PITCHES FOR SPINNING
    纺丝沥青热性质的研究
短句来源
    RHEOLOGICAL BEHAVIOR OF MESOPHASE PITCHES
    中间相沥青流变性的研究
短句来源
    Analyses of densificating C/C composites used for aircraft brakes by coal-tar pitches impregnation and carbonization
    航空刹车用炭/炭复合材料沥青浸渍法增密研究
短句来源
    Studies on the thermal properties of four petroleum pitches for spinning and A240 pitch after concocting Were made by thermal gravimetric analysis (TGA) , thermomechanical analysis (TMA) and differential scanning calorimetry (DSC) . Relative thermal stability, vitrification transformation temperature (Tg) and relationships between specific heat and temperature of the five pitches were investigated. Analysis and comparison were also made between different pitches.
    采用热重分析法(TGA),热机械分析法(TMA)和差示扫描量热法(DSC),分别对四种调制后的石油系纺丝用沥青和A240沥青作了热性质的研究,考察了五种沥青的相对热稳定性、玻璃化转变温度(Tg)及比热与温度的关系,并对不同沥青进行了分析比较。
短句来源
    The flow curve and apparent viscosity curve as well as viscosity-tem-perature curve of both pitches were determined at RET (30, 50℃) by XLY-Ⅱ capillary rheometer made in china The quality number n and viscous flow activation energy En at constant shearing stress were calculated.
    利用国产XLY—Ⅱ型毛细管流变仪,测得了两种沥青在等效温度(RET)为30℃和50℃下的流动曲线和表观粘度曲线以及粘—温曲线,计算出特性指数n和恒剪切应力下的粘流活化能Eη。
短句来源
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      bitumen
    Bitumen observed in many outcrops of Precambrian and late Devonian microbialites further raises the possibility of the calci-microbialite as a potential hydrocarbon source rock.
          
    (4) TOCres of solid bitumen and shale with high organic matter abundance (TOC >amp;gt; 30%) also require no restitution at the high mature stage.
          
    Polymer-bitumen binders for the highway engineering were obtained by the addition of a ternary ethylene-propylene rubber to a bitumen.
          
    The efficiency of BNK-40/180 bitumen modification with a blended thermoelastoplast and its components is studied by measuring the kinetics of the stress relaxation in melts.
          
    Asphaltene agglomerates are disclosed to be the main kinetic units of the stress relaxation in bitumens and bitumen-polymer compositions.
          
    更多          
      pitch
    Based on the principle of formation of conjugate tooth contour, the equations of the cam's pitch curve are derived.
          
    The continuity and symmetry of the cam's pitch curve are also analyzed.
          
    The satellite passes chosen for the detailed analysis and modeling lay approximately along the cusp/cleft band from afternoon till prenoon MLT sectors, thus emphasizing the pitch-angle dispersion role with respect to the dispersion due to convection.
          
    Some conclusions about the regime of pitch-angular diffusion into the loss cone are made.
          
    It is assumed that in such a cascade each i-th system (group) of profiles has its own pitch ti (i=1, 2,?, s) and constant phase shift αi of the oscillations between neighboring profiles.
          
    更多          
      tar pitch
    Kinetics of extraction of coal-tar pitch components with supercritical carbon dioxide
          
    The extraction of a coal-tar pitch with supercritical carbon dioxide was performed under optimal pressure, flow rate, and three different constant temperatures.
          
    Coal-tar pitch characterization by thin-layer chromatography with flame ionization detection
          
    In this process coal tar pitch is pyrolized to form amorphous carbon and volatile aromatic and polycyclic aromatic compounds (PACs).
          
    Morphology and surface properties of carbonizates (C/SiC nanocomposites) obtained via pyrolysis of a coal tar pitch modified wit
          
    更多          
      pitches
    Velocity potential of the water when a thin ship pitches in shallow water
          
    The energy regions below the fission barrier and above 6 MeV have been scanned with pitches of 0.05 and 0.1 MeV, respectively.
          
    The parameters of mixed speeches are estimated by searching in the neighbor area of given pitches to minimize the error between the original and the synthetic spectrums.
          
    Ten tuba players were asked to blow medium loud long (15 seconds) notes at three different pitches (low, middle, and high) and to perform Valsalva maneuvers at 10, 40, and 60 mmHg.
          
    Preparations of carbon fibers from precursor pitches synthesized with coal tar or petroleum residue oil
          
    更多          


    According to coal mixing principle, the inert substances and binders may be added to highly volatile bituminous coal to improve coal quality, thus enhancing coke quality. After much research into thermal plasticity of Taozhuang coal and gaoqiao coal with additives, it has been proved that the former can be made into standard casting coke with the addition of≤10% powder coke and a small quantity of soft pitch while the latter can not.

    根据配煤原理,高挥发份烟煤,可添加惰性物和粘结剂以改善煤质提高焦炭质量,经过陶庄煤和官桥煤配加添加物的热塑性研究后,认为陶庄煤配加10%的焦粉和少量软沥青可炼制成合格的铸造焦。而官桥煤则不可能。

    In this paper , identification of the phase composition of micro-sphorical particae of uraniferous lignite ash was performed by means of four methods , i.e. , the liquid nuclear emulsion microradio-graphy , X-ray diffraction analysis with Debye camera , electron-ns probe analysis of microrange composition , and a microscope-viewe. It has been proved that the spherical particle exists in the form of U1-xO2 , and Fe3O4

    本文介绍利用液体核乳胶显微放射性照相、德拜相机x射线衍射分析、电子探针微区成分分析和显微镜观察等方法,对含铀褐煤灰中的球体微粒进行了物相成分分析,其结果为:球体微粒是由沥青铀矿(U_(1-x)O_2)和四氧化三铁(Fe_3O_4)等物质所组成。

    In the paper, the spinning parameters of pitches from petroleum residues for manufacturing carbon fiber is investigated. The effects of the spinning temperature, pressure, speed and the pitch's structures and properties to spinning quality are discussed. The method of choosing the best spinning temperature with controlling melt viscosity at about 10 Pa·s, and the ability of enhancing the pitch's spinnability with raising spinning pressure are suggested.

    本文研究了用于制造碳纤维的石油沥青的纺丝工艺,包括纺丝温度,压力,速度及沥青的结构和性质对纺丝性能的影响。探讨了纺丝熔体的流变学特性。找出了用控制熔体粘度在10Pa·s泊左右来选择纺丝最佳温度的方法,及用增加纺丝压力来提高可纺性的可能性。

     
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