采用两步法和一步法涂膜热酰亚胺化工艺分别制备了S.BPDA/ODA的聚酰亚胺(PI)薄膜.偏光观察发现,一步法制备的薄膜经过250℃以上的温度处理后出现明显的微晶结构,在相同的酰亚胺工艺条件下两步法制备的薄膜没有出现微晶结构.DMA测试表明,一步法与两步法制备的薄膜Tg分别为294℃和276℃;相比两步法,一步法制备的薄膜具有更佳的力学和热稳定性能.分析认为,微晶结构的交联作用和高酰亚胺化程度使一步法制备的薄膜具有更佳的性能.
参考文献
| [1] | 丁孟贤;何天白.聚酰亚胺新型材料[M].北京:科学出版社,1998 |
| [2] | Hsiao SH.;Chen YJ. .Structure-property study of polyimides derived from PMDA and BPDA dianhydrides with structurally different diamines[J].European Polymer Journal,2002(4):815-828. |
| [3] | P.M.Hergenrother;K.A.Watson;J.G.Smith Jr;J.W.Connell;R.Yokota .Copolyimides from 2,3,3,4'-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride with 4,4'-oxydianiline[J].Polymer: The International Journal for the Science and Technology of Polymers,2004(16):5441-5449. |
| [4] | Mahesh Kulkarni;Sandeep Kothawade;Girish Arabale;Deepali Wagh;K.Vijayamohanan;R.A.Kulkarni;S.P.Vernekar .Synthesis and characterization of polyimides and co-polyimides having pendant benzoic acid moiety[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(11):3669-3676. |
| [5] | Tong Y J.Polyimides from Isomeric Biphenyhetracarboxylic Dianhydrides and the Effects of Chemical Structure on Solubility[J].Polymer Engineering and Science,2002(42):101-110. |
| [6] | Inoue H.;Ogawa T.;Sasaki Y. .COMPARISON OF ONE-POT AND TWO-STEP POLYMERIZATION OF POLYIMIDE FROM BPDA/ODA[J].Journal of Applied Polymer Science,1996(1):123-131. |
| [7] | Yuejin Tong;Wenxi Huang;Jun Luo;Mengxian Ding .Synthesis and Properties of Aromatic Polyimides Derived from 2,2',3,3'-Biphenyltetracarboxylic Dianhydride[J].Journal of Polymer Science, Part A. Polymer Chemistry,1999(10):1425-1433. |
| [8] | Qinghua Zhang.Morphology of Polyimide Fiber Derivedfrom 3,3,4,4'-Biphenyhetracarboxylic Dianhydride and 4,4'-oxydianiline[J].Journal of Applied Polymer Science,2004(93):669-675. |
| [9] | 翟燕,顾宜.PMDA-ODA型聚酰亚胺制备工艺与聚集态结构的研究进展[J].高分子材料科学与工程,2007(02):28-32. |
| [10] | 顾宜,赵炜,刘向阳,朱蓉琪.酰亚胺化工艺对BTDA-m-PDA型聚酰亚胺聚集态结构的影响[J].四川大学学报（工程科学版）,2005(05):88-92. |
| [11] | 吴晓,翟燕,刘向阳,薛艳伟,顾宜.联苯二胺型均聚及共聚酰亚胺的聚集态结构[J].高分子材料科学与工程,2007(04):148-151. |
| [12] | Jou J H;Huang P T.Effect of Thermal Curing on theStructures and Properties of Aromatic Polyimide Films[J].Macromolecules,1991(24):3796-3803. |
| [13] | Bershtein VA;Sukhanova TE;Krizan TD;Keating MY;Grigoriev AI;Egorov VM;Yakushev PN;Peschanskaya NN;Vylegzhanina ME;Bursian AE .Relationship of processing conditions to structure and properties in PMDA-ODA polyimide[J].Journal of Macromolecular Science. Physics,2005(5):613-639. |
| [14] | Seo J.;Shul YG.;Han H.;Jeon J. .Water sorption and activation energy in polyimide thin films[J].Journal of Polymer Science, Part B. Polymer Physics,2000(21):2714-2720. |
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%