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- Mesophase pitch was melt spun into hollow,ribbon shaped and Y shaped fibers. 利用中間相瀝青熔融紡絲法，制得中空、條形、Y形等異形纖維，介紹了異形瀝青纖維的紡絲特點(diǎn)。
- A better separation process is needed to improve the reproducibility and quality of the mesophase pitch precursor. 因此,需要有一種較好的分離工藝,以便能夠保證瀝青在分離過(guò)程中,分離后的瀝青組分再現性和瀝青中間前驅體的質(zhì)量。
- Pitch cokes are prepared by carbonization of mesophase pitch and normal pitch at different pressures. 將中間相瀝青和普通瀝青在不同壓力下進(jìn)行炭化,分析兩種瀝青在不同壓力下的成焦偏光組織和掃描形貌。
- Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch. 分別以煤瀝青、石油中間相瀝青和AR瀝青為前驅體制備炭泡沫材料。
- 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為原料，調制出可紡性的中間相瀝青，并紡出均勻的中間相瀝青纖維。
- 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為原料，調制出可紡性的中間相瀝青，并紡出均勻的中間相瀝青纖維。
- The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawing rate. 熔紡時(shí)控制了擠出流量和牽伸速率的良好匹配,獲得了絲徑均勻的大直徑中間相瀝青炭單絲。
- Pitch fluoride powders were prepared through the reaction between mesophase pitch grain and fluorine gas in rotative nickel reactor. 摘要采用中間相瀝青微粒在旋轉式反應釜中與氟氣進(jìn)行反應制備出氟化瀝青。
- Mesophase pitch based carbon fibres can have high thermal conductivity due to the highly extended graphitic crystalline structure along the fibre axis. 中間相瀝青炭纖維由于其石墨晶體結構沿纖維軸高度擇優(yōu)取向,具有極高的熱導率。
- In general,organic polymers,mesophase pitch,coal and coal-related materials can be used as the starting materials for the production of carbon foams. 通常用于制備泡沫炭的原料包括有機聚合物、中間相瀝青以及煤和煤系物。
- The effect of the raw material of mesophase pitch, temperature, as well as fibre shape on the electric resistance of the carbon fibres is... 還綜述了中介相瀝青原料、溫度和纖維形狀對碳纖維電阻率的重要影響；指出中介相瀝青基碳纖維是綜合性能最優(yōu)的高性能纖維之一。
- Aqua mesophase pitch (AMP) was prepared through oxidation of coal tar pitch with mixtures of concentrated sulfuric acid and nitric acid. 以煤焦油瀝青為原料,經(jīng)過(guò)氧化、堿溶制備出水性中間相瀝青,著(zhù)重考察了制備條件對水性中間相瀝青在水相中凝膠化的影響。
- In this paper,the coal tar pitch-based mesophase pitch microbeads (MMB) were activated by chemical activation with KOH in different activation condition. 以煤焦油系中間相瀝青微球為原料，KOH為活化劑，在不同活化條件下制備活性炭微球。
- Carbon foam is a novel thermal management material which is produced from mesophase pitch, and possesses high thermal conductivity after carbonization and graphitization. 具有高導熱、低密度的新型高性能碳泡沫是最近發(fā)現的一種高新材料,它以中間相瀝青為前驅體,然后發(fā)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. 考察了熱縮聚溫度和停留時(shí)間對中間相瀝青收率、微球收率及形態(tài)的影響。
- Mesoporous carbons(MCs)were prepared by an imprinting method,using mesophase pitch and nanometer colloidal silica solution as carbon precursors and pore generators,respectively. 用中間相瀝青作碳源,硅膠水溶液作造孔劑,采用膠體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. 在保證瀝青可紡性的前提下，應盡可能在低溫、低壓、高收絲速度的條件下熔融紡絲，可以得到結構與性能較好的瀝青纖維。
- 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. 考察了大直徑中間相瀝青纖維熔紡過(guò)程中中間相瀝青在噴絲板微孔區內的流動(dòng)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. 利用瀝青在熱解過(guò)程中產(chǎn)生揮發(fā)性氣體自發(fā)泡和高壓滲氮的原理,以石油中間相瀝青為原料,采用高壓反應釜制備炭泡沫材料。
