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| Effects of Plasma Aging Behaviour on Damp Heat Resistance of Aramid Fiber Ⅲ/BMI Composite |
| Received:September 16, 2017 Revised:February 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.02.008 |
| KeyWord:aramid fiber Ⅲ polymer-matrix composite plasma aging humidity resistance |
| Author | Institution |
| WANG Jing |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
| MENG Ling-zhi |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
| REN Hang |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
| FENG Jia-yue |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
| SHI Chen |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
| REN Rong |
Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang , China |
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| Abstract: |
| Objective To observe effects of plasma treatment and aging behavior on bending strength, interlaminar shear strength and damp heat resistance of aramid fiber reinforced bismaleimide (BMI) composite. Methods The aramid fiber surface was modified by low temperature inductive coupled plasma. The aramid fiber Ⅲ reinforced bismaleimide composites before and after plasma treatment and aging were prepared through solution impregnating technique after being exposed in air for three days. The composite bending strength and interlaminar shear strength before and after water absorption were measured with a universal material testing machine. The composite shear rupture morphology was observed by Scanning Electron Microscope (SEM). Results After plasma processing, the water absorption rate decreased from 0.51% to 0.33%, the interlaminar shear strength (ILSS) value increased from 49.4 MPa to 62.9 MPa. However, the water absorption rate increased to 0.69% and the ILSS value decreased to 56.0 MPa after plasma aging. Conclusion Plasma treatment improves interfacial properties of composite. But the interfacial properties and damp heat resistance of composite decrease to some extend after aging behavior of plasma processing. Plasma treatment and aging behavior have little effect on bending strength of composite |
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