基于基斯勒尔法中间相沥青的流变性质（英文）  

Rheological properties of mesophase pitch investigated by the Giseeler fluidity method

作　　者：金鸣林[1] 程洁羚[1] 王连星[1] 金双玲[1] 张睿[1] 

机构地区：[1]上海应用技术学院材料科学与工程学院,上海201418

出　　处：《新型炭材料》2015年第2期176-180,共5页New Carbon Materials

基　　金：Capacity Building Program of Shanghai Local Universities(12160503600);First-class Discipline Construction Fund of Shanghai M unicipal Education Commission(J201212);Shanghai Science and Technology Development Fund(09520500700);National Natural Science Foundation of China(U1332107);Key Discipline Construction Fund of Composite M aterials of Shanghai Institute of Technology(10210Q140001)~~

摘　　要：用基斯勒尔法研究了热处理前后（室温～520℃）相沥青的流变性质。结果表明：在不同温度和不同加热速率下，基斯勒尔流动度具有很好的重现性。未经热处理的中间相沥青的流动度在253～282℃之间随温度增加缓慢增加，在282～311℃随温度增加呈现指数增大，在282～498℃几乎不变。热处理的沥青的流动度也随温度增加呈现类似的S型的变化规律，其中指数增加段可以用阿伦尼乌斯公式计算其粘流活化能。沥青的甲苯不溶物含量随热处理时间增大从67.3%增大到88.7%，粘流活化能为203.6～294 kJ/mol。The Giseeler fluidity method was used to investigate the rheological properties of pitch with and without heat treatment from room temperature to 520 ℃. Results show that the fluidity has a good repeatability at different temperatures under different heat-ing rates. The fluidity of the raw pitch slowly increases from 253 to 282℃, then increases exponentially from 282 to 311℃ near the softening temperature, and finally remains unchanged from 311 to 498 ℃. This changing pattern of fluidity with temperature has also been found for heat-treated mesophase pitch and can be formulated by the Arrhenius equation, from which the viscous flow activation energy can be obtained. The toluene-insoluble fraction increases from 67. 3% to 88. 7% with heat-treatment time and the flow activa-tion energy of the treated mesophase pitch in the Newtonian fluid region at low temperature range is between 203. 6 and 294 kJ/mol.

关 键 词：流变学 基氏流动度仪 高温煤焦油沥青 中间相沥青 

分 类 号：TQ522.65[化学工程—煤化学工程]