为提高卫星结构用复合材料的性能,研制了改性氰酸酯树脂基M40复合材料,采用傅里叶红外光谱法及DSC法对E51环氧树脂改性双酚A型二氰酸酯(BADCy)体系的反应性进行了研究.结果表明:低温时主要发生三嗪环反应,高温时主要发生五元化反应;BADCy改性体系的吸湿率随E51含量的增加而下降,当E51含量为10%时,BADCy的弯曲强度和冲击强度分别提高了27%和49%;100h水煮使M40/BADCy复合材料的层间剪切强度下降18%,-50℃/12 h～150℃/12 h循环20次的高低温交变对M40/BADCy复合材料的力学性能几乎没有影响,经总计量为109J/m2的紫外线辐射后,M40/BADCy复合材料的剪切强度和弯曲强度仅下降了7.5%和9.1%.
参考文献
| [1] | GEORGE F S;DAVID E B .Space radiation effects on the dimensional stability ofAtoughened epoxy graphite composite[J].SAMPE Quarterly,1986,17(04):39-45. |
| [2] | ZIMCIK D G;MAAG R .Results of apparent atomic oxygen reactions with spacecraft materials during shuttle flight STS-41 G[J].Journal of Spacecraft and Rockets,1988,25(02):162-168. |
| [3] | Bansemir H.;Haider O. .Fibre composite structures for space applications - recent and future developments[J].Cryogenics,1998(1):51-59. |
| [4] | DAVID E B;TOMPKINS S S;SYKES G F .Electron radiation effects on the thermal expansion of graphite resin composites[J].Journal of Spacecraft and Rockets,1986,23(06):625-629. |
| [5] | HAMERTON I;HAYJN .Recent developments in the chemistry of cyanate esters[J].Polymer International,1998,47(04):465-473. |
| [6] | I Hamerton;H Herman;KT Rees;A Chaplin;SJ Shaw .Water uptake effects in resins based on alkenyl-modified cyanate ester-bismaleimide blends[J].Polymer international,2001(4):475-483. |
| [7] | Srinivasan SA.;McGrath JE. .Amorphous phenolphthalein-based poly(arylene ether) modified cyanate ester networks: 1. Effect of molecular weight and backbone chemistry on morphology and toughenability[J].Polymer: The International Journal for the Science and Technology of Polymers,1998(12):2415-2427. |
| [8] | Liang GZ.;Zhang MX. .Enhancement of processability of cyanate ester resin via copolymerization with epoxy resin[J].Journal of Applied Polymer Science,2002(11):2377-2381. |
| [9] | ISABEL H;CLARA M G;MARCOS D R et al.Cure monitoring of catalysed cyanate ester resins[J].Polymer International,2000,49(07):735-742. |
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%