|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
炭黑的“impurity-free”改性及其在聚酰亚胺薄膜中的分散特性研究
DOI: 10.3724/SP.J.1105.2012.11381, PP. 876-882
Keywords: 聚酰胺酸,炭黑,纳米分散
Abstract:
利用聚酰胺酸(PAA)在研磨过程形成炭黑(CB)的"impurity-free"分散剂制备纳米CB填充聚酰亚胺(PI)高性能复合薄膜.球磨CB和PAA/N-甲基-2-吡咯烷酮(NMP)溶液的混合液,PAA在研磨过程中降解形成活性分子,原位生成与CB表面具有反应活性和强烈物理吸附能力的"impurity-free"分散剂.拉曼、红外以及紫外-可见光吸收光谱证实了降解PAA分子对CB的改性作用.经改性的CB与PAA溶液共混,涂覆固化制备PI/CB复合薄膜.TEM照片表明该分散剂可以显著促进CB粒子在PI基体中的均匀分散,分散粒径约为200nm.力学性能测试和导电性能测试表明PI/CB复合薄膜的断裂伸长率大幅提高,电阻率(ρ)重复性浮动范围从2个数量级降到1个数量级.进一步研究发现,研磨过程中添加高分子量PAA更有利于CB在PI基体中的均匀分散.
| [1] | 2 Arlen M J,Wang D,Jacobs J D,Justice R,Trionfi A,Hsu J W P,Schaffer D,Tan L S,Vaia R A.Macromolecules,2008,41:8053~ 8062
|
| [2] | 3 Delozier D M,Watson K A,Smith J G,Clancy T C,Connell J W.Macromolecules,2006,39:1731~1739
|
| [3] | 5 Wu H,Zhao W,Hu H,Chen G.J Mater Chem,2011,21(24):8626~8632
|
| [4] | 6 Wu G Z,Tang Y C,Weng R X.Polym Degrad Stab,2010,95:1449~1455
|
| [5] | 1 Islam M F, Rojas E,Bergey D M,Johnson A T,Yodh A G.Nano Lett.,2003,3:269~273
|
| [6] | 4 Li Q,Wu G,Ma Y,Wu C.Carbon,2007,45(12):2411~2416
|
| [7] | 7 Fang M,Wang K,Lu H,Yang Y,Nutt S.J Mater Chem,2009,19:7098~7105
|
| [8] | 8 Raitses Y,Skinner C H,Jiang F,Duffy T S.J Nuclear Mater,2008,75:365~369
|
| [9] | 9 Wu H,Zhao W,Hu H,Chen G.J Mater Chem,2011,21:8626~8632
|
| [10] | 10 Mittal K L.Polyimides:Fundamentals and Applications.1th ed.New York:CRC Press,1996.15~200
|
| [11] | 11 Kevin D.Ausman,Richard P,Oleg L,Rodney S R.J Phys Chem B,2000,104(38):8911~8915
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
