以芳香二元胺2,6-二-4-氨基苯氧基苯甲腈(BDB)为固化交联剂,采用溶液聚合的方法制备了不同预聚程度的含联苯醚腈链段的双邻苯二甲腈(2PEN-BPh)聚合物,并研究了预聚程度对其性能的影响.通过DSC和流变研究了2PEN-BPh聚合物在交联剂作用下的固化反应行为,使用TGA跟踪了聚合物不同反应阶段的热性能.结果表明,2PEN-BPh具有可交联反应活性,其交联过程可以通过控制固化交联剂BDB的含量来控制;当交联剂含量为3%(质量分数)时,2PEN-BPh的最佳预聚时间为2h.TGA结果显示2PEN-BPh聚合物具有优异的热稳定性和热氧稳定性,完全固化的2PEN-BPh在氮气和空气中的起始分解温度均在515℃以上,分解5%的温度超过556℃,800℃时的残炭率在氮气中达78%以上,而在空气中也仍有44%以上.
参考文献
| [1] | Keller T M;Price T R .[J].Journal of Macromolecular Science:Chemistry,1982,18:931-937. |
| [2] | Sastri S B;Keller T M .[J].J of Poly Sci Part A:Polym Chem,1998,36:1885-1890. |
| [3] | Laskoski M;Dominguez DD;Keller TM .Synthesis and properties of a bisphenol A based phthalonitrile resin[J].Journal of Polymer Science, Part A. Polymer Chemistry,2005(18):4136-4143. |
| [4] | Keller TM;Dominguez DD .High temperature resorcinol-based phthalonitrile polymer[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(13):4614-4618. |
| [5] | Dominguez D D;Keller T M .[J].Polymer,2007,48:91-97. |
| [6] | Keller T M .[J].Journal of Polymer Science Part A:Polymer Chemistry,1988,26:3199-3212. |
| [7] | Dominguez DD;Keller TM .Phthalonitrile-epoxy blends: Cure behavior and copolymer properties[J].Journal of Applied Polymer Science,2008(4):2504-2515. |
| [8] | Yang X L;Liu X B .[J].Chinese Chemical Letters,2010,21:743-747. |
| [9] | Cao G P;Chen W J;Wei J J et al.[J].express polymer Letters,2007,1:512-518. |
| [10] | Li W T;Zuo F;Jia K et al.[J].Chinese Chemical Letters,2009,20:348-351. |
| [11] | Dominguez D D;Keller T M .[J].High Performance Polymers,2006,18:283-304. |
| [12] | Yang X L;Lei Y J;Liu X B.[J].Journal of Applied Polymer Science,2010 |
| [13] | Du, RH;Li, WT;Liu, XB .Synthesis and thermal properties of bisphthalonitriles containing aromatic ether nitrile linkages[J].Polymer Degradation and Stability,2009(12):2178-2183. |
| [14] | Cao, GP;Chen, WJ;Liu, XB .Synthesis and thermal properties of the thermosetting resin based on cyano functionalized benzoxazine[J].Polymer Degradation and Stability,2008(3):739-744. |
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%