您要查找的是不是：
- Mesophase pitch was melt spun into hollow,ribbon shaped and Y shaped fibers. 利用中间相沥青熔融纺丝法，制得中空、条形、Y形等异形纤维，介绍了异形沥青纤维的纺丝特点。
- A better separation process is needed to improve the reproducibility and quality of the mesophase pitch precursor. 因此,需要有一种较好的分离工艺,以便能够保证沥青在分离过程中,分离后的沥青组分再现性和沥青中间前驱体的质量。
- Pitch cokes are prepared by carbonization of mesophase pitch and normal pitch at different pressures. 将中间相沥青和普通沥青在不同压力下进行炭化,分析两种沥青在不同压力下的成焦偏光组织和扫描形貌。
- Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch. 分别以煤沥青、石油中间相沥青和AR沥青为前驱体制备炭泡沫材料。
- Spinnable mesophase pitch was prepared from catalytic cracking residue of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained. 以石油系催化裂化渣油为原料，调制出可纺性的中间相沥青，并纺出均匀的中间相沥青纤维。
- Spinnable mesophase pitch was prepared ftom catalytic cracking residus of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained. 以石油系催化裂化渣油为原料，调制出可纺性的中间相沥青，并纺出均匀的中间相沥青纤维。
- The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawing rate. 熔纺时控制了挤出流量和牵伸速率的良好匹配,获得了丝径均匀的大直径中间相沥青炭单丝。
- Pitch fluoride powders were prepared through the reaction between mesophase pitch grain and fluorine gas in rotative nickel reactor. 摘要采用中间相沥青微粒在旋转式反应釜中与氟气进行反应制备出氟化沥青。
- Mesophase pitch based carbon fibres can have high thermal conductivity due to the highly extended graphitic crystalline structure along the fibre axis. 中间相沥青炭纤维由于其石墨晶体结构沿纤维轴高度择优取向,具有极高的热导率。
- In general,organic polymers,mesophase pitch,coal and coal-related materials can be used as the starting materials for the production of carbon foams. 通常用于制备泡沫炭的原料包括有机聚合物、中间相沥青以及煤和煤系物。
- The effect of the raw material of mesophase pitch, temperature, as well as fibre shape on the electric resistance of the carbon fibres is... 还综述了中介相沥青原料、温度和纤维形状对碳纤维电阻率的重要影响；指出中介相沥青基碳纤维是综合性能最优的高性能纤维之一。
- Aqua mesophase pitch (AMP) was prepared through oxidation of coal tar pitch with mixtures of concentrated sulfuric acid and nitric acid. 以煤焦油沥青为原料,经过氧化、碱溶制备出水性中间相沥青,着重考察了制备条件对水性中间相沥青在水相中凝胶化的影响。
- In this paper,the coal tar pitch-based mesophase pitch microbeads (MMB) were activated by chemical activation with KOH in different activation condition. 以煤焦油系中间相沥青微球为原料，KOH为活化剂，在不同活化条件下制备活性炭微球。
- Carbon foam is a novel thermal management material which is produced from mesophase pitch, and possesses high thermal conductivity after carbonization and graphitization. 具有高导热、低密度的新型高性能碳泡沫是最近发现的一种高新材料,它以中间相沥青为前驱体,然后发泡、碳化、石墨化制得。
- The effect of condensation temperature and soaking time on the yields of mesophase pitch and derived therefrom microbeads,and the textrue of mesophase pitch were investigated. 考察了热缩聚温度和停留时间对中间相沥青收率、微球收率及形态的影响。
- Mesoporous carbons(MCs)were prepared by an imprinting method,using mesophase pitch and nanometer colloidal silica solution as carbon precursors and pore generators,respectively. 用中间相沥青作碳源,硅胶水溶液作造孔剂,采用胶体印刻法制得一系列中孔碳。
- The composition and structure of AR mesophase pitch were studied by the means of elemental analysis, FT-IR, polarized light microscop with hot-stage and so on. 在保证沥青可纺性的前提下，应尽可能在低温、低压、高收丝速度的条件下熔融纺丝，可以得到结构与性能较好的沥青纤维。
- Rheological characteristic and shear rate of mesophase pitch in microhole passage of spinneret during melt spinning for preparation of large diameter mesophase pitch filament were investigated. 考察了大直径中间相沥青纤维熔纺过程中中间相沥青在喷丝板微孔区内的流动特性及剪切速率。
- A carbon foam was prepared from petroleum mesophase pitch in a high pressure/high temperature reactor by self-bubbling of volatile gas and infiltration of nitrogen at high pressure. 利用沥青在热解过程中产生挥发性气体自发泡和高压渗氮的原理,以石油中间相沥青为原料,采用高压反应釜制备炭泡沫材料。
