mesophase造句
1. The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawing rate.
2. Using aqua mesophase and tetraethoxysilane(TEOS)as starting materials, the precursors of binary xerogel and aerogel were prepared respectively by sol gel method.
3. The complicated structures and various forms of carbonaceous mesophase make the raw materials and production process involved more complicated.
4. Some of smectic mesophase liquid crystals exhibit both ferro- electric and pyroelectric properties.
5. Carbonaceous mesophase is an excellent precursor for carbon materials, especially those with high additional value.
6. The R value of the pitch mesophase has very important influence on selfsintering function of the binderless carbon materials.
7. The kinetics of mesophase transformation of Shengli residue oil was discussed and the reaction order,[http:///mesophase.html] reaction rate constant and apparent activation energy were calculated.
8. Mesophase pitch based carbon fibres can have high thermal conductivity due to the highly extended graphitic crystalline structure along the fibre axis.
9. Boron - substituted polyaromatic mesophase prepared by co - pyrolysis of a tar pitch with pyridine - borane complex under autogeneous pressure.
10. Mesophase pitch-based carbon fibers, which are of higher thermal conductivity (TC) than that of metals such as Ag and Cu, are noticeable in the world.
11. Spinnable mesophase pitch was prepared from catalytic cracking residue of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained.
12. Mesoporous carbons(MCs)were prepared by an imprinting method, using mesophase pitch and nanometer colloidal silica solution as carbon precursors and pore generators, respectively.
13. Boron substituted polyaromatic mesophase was prepared by co pyrolysis of a coal tar pitch with pyridine borane complex under autogeneous pressure.
14. Influence of mesophase content, oxidation temperature and oxidation residence time on the non fusible treatment of mesophase petroleum pitch fibre was investigated under air atmosphere.
15. Some smectic mesophase liquid crystal exhibit ferroelectric and pyroelectric properties.
16. Boron substituted mesophase pitches were synthesized by co pyrolysis of different coal tar pitches with pyridine borane complex.
17. During petroleum thermal conversion, asphaltene yields coke via the second liquid phase and the carbonaceous mesophase.
18. Microdomain building theory made great progress in explaining the formation of carbonaceous mesophase, but the introduction of the non-existent stacking units of molecules is a defect of the theory.
19. It was indicated that the modified coal pitch, which had not only a great deal of mesophase microbead but good thermostability as well, can be qualified to be an excellent carbon precursor.
20. BGBU theory was brought forward based on the former theories and can explain the formation process of carbonaceous mesophase very well.
21. Needle coke is a new material, which is developed accompanying by research of Carbon mesophase theory.
22. Thermal pyrolysis of Daqing thermal tar and Xinjiang natural bitumen at various tempertures were studied with the purpose of investigating the mesophase transformation.
23. Pitch fluoride powders were prepared through the reaction between mesophase pitch grain and fluorine gas in rotative nickel reactor.
24. The commercial production of high performance carbon fibre from mesophase asphalt will be one of the main technical routes hereafter.
25. In this paper the preparation and properties of carbon foams from mesophase pitch are addressed.
26. Synthesis of Diazo, Imine, and Ester Liquid Crystals and the Effect of Central-bridge-bond on the Mesophase Behavior.
27. Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch.
28. By means of oxidation themal gravity(TG) on new ribbon-shaped mesophase pitch-based fibers, its system of increasing temperature in thermal-oxidized stabilization process was estabilished.