回收与可持续英文2023被引 5
回收纤维对短切碳纤维和玻纤增强聚醚酰亚胺复合材料力学性能的影响研究
Investigation of recycling effects on the mechanical properties of short carbon and glass fiber reinforced polyetherimide composites
Jin‐Ming Hu, Zhimao Zhou, Fang‐Liang Guo, Zheng Sun, Li Zhang, Ziming Wang, Penggang Yin, Yuan‐Qing Li, Shao‐Yun Fu · Chongqing University
摘要整理
针对复合材料废弃物不断积累的问题,本研究探讨了用回收纤维替代原生碳纤维(VCF)和原生玻纤(VGF)制备注射成型聚醚酰亚胺(PEI)复合材料的可行性。通过硫酸回收工艺对纤维及其复合材料进行了详细表征。结果表明,回收碳纤维(RCF)和回收玻纤(RGF)的强度保留率分别为81.6%和55.7%。由于界面结合增强,RCF的增强因子从原生碳纤维的0.120提高到0.147;而由于玻纤强度下降,RGF的增强因子从原生玻纤的0.080降低到0.065。相应地,RCF/PEI复合材料的拉伸强度(152.8 MPa)与VCF/PEI(155.3 MPa)相当,而RGF/PEI的拉伸强度(102.5 MPa)低于VGF/PEI(112.3 MPa)。此外,RCF/PEI和RGF/PEI的拉伸模量与VCF/PEI和VGF/PEI基本相当,表明回收工艺对纤维模量影响较小。尽管回收过程对纤维力学性能有一定影响,但通过注射成型工艺引入回收纤维(尤其是RCF)能够有效增强PEI复合材料的性能。
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