以改进的PMR方法由联苯四甲酸二甲酯(BPDE), 二氨基二苯甲烷(MDA)及降冰片烯二酸单甲酯(NE)合成的树脂为基体制备了AS4碳纤维增强的超高温聚酰亚胺复合材料.研究了树脂预聚物的高温流变行为.制得的复合材料在室温的弯曲强度为1190 MPa,弯曲模量为121 GPa,层间剪切强度为42 MPa;在371℃的力学性能分别是763 MPa、116 GPa、26 MPa;在371℃时的力学强度保持率可达50 %以上;玻璃化温度为472℃;该基体树脂和复合材料在空气中371℃下100 h老化后,热失重分别为1.9 %和2 %.
参考文献
| [1] | Pater R H. Thermosetting Polyimides: A review [J]. SAMPE J,1994,30(5):29-38. |
| [2] | Meador M A. Recent advances in the development of processable high-temperature polymers [J]. Annu Rev Mater Sci, 1998, 28: 599-630. |
| [3] | 陈祥宝. 高性能树脂基体 [M]. 北京:化学工业出版社, 1999.146-189. |
| [4] | Serafini T T, Devlvigs P, Lightsey G R. Thermoally stable polyimides from solutions of monomeric reactants [J]. J Appl Polym, 1972, 16: 905-915. |
| [5] | Wilson D. PMR-15 processing properties and problems--A review [J]. British Polym J, 1998, 20: 405-416. |
| [6] | Pater R H. Interpenetrating polymer network approach to tough and microcracking resistant high temperature polymer, Part II: LaRC-RP41 [J]. Polym Eng Sci, 1991, 31(1): 20-27. |
| [7] | Vannucci R D. PMR Polyimide compositions for improved performance at 371℃ [J]. SAMPE, 1987, 19(1): 31-36. |
| [8] | Florence M, Loustalot G, Billon L. Chemical structure/mechanical properties of para-aminostyrene(PAS)-terminated televhelic polyimides [J]. Polymer, 1998, 39(10): 1815-1831. |
| [9] | Scola D A, Wai M. The thermo-oxidative stability of fluorinated polyimides and polyimides/graphite composites at 371℃ [J]. J Appl Polym Sci, 1994, 52: 421-429. |
| [10] | Scola D A, Vontel J H. Process characteristics of high temperature polymers and composites [A]. In:34th Int SAMPE Symp [C]. 1989. 88-97. |
| [11] | 王震. 聚酰亚胺的复合材料制备与辐射固化 [D].长春:中科院长春应用化学研究所,2002. |
| [12] | Zhou J, Zhang J, Lin W, et al. The effect of formulated molecular weight on temperature resistance and mechanical properties in polyimide based composites [J]. J Mater Sci, 1996, 31: 5119-5125. |
| [13] | 丁孟贤, 张劲. 聚酰亚胺前体溶液的制备 [P]. 中国专利, ZL951002392, 1995. |
| [14] | Chu Q, Zhang J, Xu Z, et al. Study on a novel polyimide precursor prepared by a modified polymerization of monomeric reactants (MPMR) procedure [J]. Macromol Chem Phys, 2000, 201: 505-509. |
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%