以萘系中间相沥青为原料,考察了发泡条件、炭化和石墨化工艺对所制泡沫炭结构和性能的影响.结合粘温曲线、TG-DTG热重曲线以及不同发泡条件下泡沫炭的表面形貌分析,其最佳发泡条件为:发泡温度600℃,升温速率5℃/min,发泡压力5MPa.石墨化升温速率越低越有利于泡沫炭石墨微晶的生长及压缩强度的提高,其中以5℃/min升温至2800℃并恒温30min所制泡沫炭的压缩强度达1.38MPa.
参考文献
[1] | Zhigang Fang;Xiaoming Cao;Chusen Li .Investigation of carbon foams as microwave absorber: Numerical prediction and experimental validation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(15):3368-3370. |
[2] | Jie Yang;Zeng-min Shen;Zi-biao Hao .Microwave characteristics of sandwich composites with mesophase pitch carbon foams as core[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(8/9):1882-1885. |
[3] | Maslov K;Kinra VK .Amplitude-frequency dependence of damping properties of carbon foams[J].Journal of Sound and Vibration,2005(3/5):769-780. |
[4] | James W.Klett;April D.McMillan;Nidia C.Gallego;Timothy D.Burchell;Claudia A.Walls .Effects of heat treatment conditions on the thermal properties of mesophase pitch-derived graphitic foams[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(8/9):1849-1852. |
[5] | Rajeev Mehta;David P. Anderson;Joseph W. Hager .Graphitic open-celled carbon foams: processing and characterization[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(11):2174-2176. |
[6] | D.Gaies;K.T.Faber .Thermal properties of pitch-derived graphite foam[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(7):1137-1140. |
[7] | 李同起,王成扬.中间相沥青基泡沫炭的制备与结构表征[J].无机材料学报,2005(06):1438-1444. |
[8] | 沈曾民,戈敏,迟伟东,刘辉.中间相沥青基炭泡沫体的制备、结构及性能[J].新型炭材料,2006(03):193-201. |
[9] | 邱介山,李平,刘贵山,周颖.由中间相沥青制备泡沫炭:Fe(NO3)3的影响[J].新型炭材料,2005(03):193-197. |
[10] | 闫曦,史景利,宋燕,郭全贵,刘朗.中间相沥青基泡沫炭的制备及性能[J].宇航材料工艺,2006(02):56-59,67. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%